EL-Type Pulverizer Products and Services

POWER SERVICE

Alstom Power Inc. (Alstom) is recognizedaround the world as a leader in the design,manufacturing and servicing of powergeneration equipment. While our heritagedates to the late 1800’s, our capabilitiescontinue to expand and point us to the future.

At Alstom, we combineour capabilities andexperience to enhancethe productivity andperformance of yourboilers, pulverizers,feeders, air pollutioncontrol systems, ashhandling systems andauxiliary equipment.

We are an organization thatfocuses on customer serviceand understand the challengesfaced by plant owners, operators,maintenance personnel andmanagement. Whether it is a simplereplacement part, a rebuilt assembly, acustom fabrication or inventorymanagement program, Alstom provides value and service to the customer.

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Table of ContentsIntroduction to the EL-type Mill ..............................................................................……………………………………3The Alstom Advantage ....................................................................................……………………………………………4

Technical Services......................................................................................……………………………………………4Inventory Management Programs ..........................................................................……………………………6Outage Kits........................................................................................……………………………………………………6Alstom Service and Distribution Centers ..........................................................................……………………7Component Rotation Programs................................................................................……………………………7Rebuild / Repair Programs ..............................................................................……………………………………8

Rebuild / Repair Services ................................................................................……………………………………………9Yoke Repairs ......................................................................................……………………………………………………9Air Seal Repairs ........................................................................................……………………………………………9Rotating Assembly Rebuilds and Repairs ......................................................................……………………10Spring Bolt Rebuilds................................................................................……………………………………………11Bearing Plate Repairs..............................................................................……………………………………………12Gear Case Repairs ..................................................................................……………………………………………13Pinion Repairs..................................................................................……………………………………………………13Gearbox Overhauls..................................................................................……………………………………………14

Upgrades for EL-type Mills ............................................................................……………………………………………15Performance Upgrades ..................................................................................……………………………………15

Mill Conversions ..........................................................................................……………………………………15Availability Upgrades ..........................................................................................................................16

Ceramic Lining and Vacuum Bonded Products ..........................................................................……16Spring Bolts ........................................................................................……………………………………………17Heavy Duty Springs ....................................................................................……………………………………17Thermal Barrier Coating for Bottom Ring ..........................................................................……………18Clampless Bolt-thru Housing Liners............................................................................……………………18Main Shaft Upgrades ..................................................................................……………………………………19

Keyless Upgrade ..............................................................................................……………………………20SuperNut Upgrade ..........................................................................................……………………………21

Special Tools ..................................................................................……………………………………………………………22Asset Planning and Life Cycle Work Sheet ..........................................................................……………………23Replacement Products for EL-type Mills ......................................................................……………………………25

Gearbox Replacement Parts ..........................................................................……………………………………26Main Shaft Assembly ..............................................................................……………………………………………27Pinion Shaft Assembly ....................................................................................……………………………………31Oil Pump Assembly ................................................................................……………………………………………32Oil Pump Parts........................................................................................……………………………………………32Bearing Plates ................................................................................……………………………………………………33Air Seal Housing Replacement Parts......................................................................……………………………34Seal and Cover Ring Replacement Parts........................................................................……………………35Throat Rings and Shims Replacement Parts..................................................................……………………36Relief Gate Assemblies and Parts ..........................................................................……………………………37Pyrite Gate Assemblies and Parts ..........................................................................……………………………39Grinding Zone Components ............................................................................……………………………………40

Grinding Zone Materials......................................................................................……………………………40Grinding Zone Assembly......................................................................................……………………………41Grinding Balls ......................................................................................……………………………………………41

Spring Bolt Assemblies ..................................................................................……………………………………42Classifier Assembly..................................................................................……………………………………………44

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There are many E and EL-type mills stillacceptably operating in the USA. The mill hasparticular advantages and disadvantages overcompeting mill types. In its day, the lowheight gave an advantage of lower boilersetting heights. The mill is compact andserviced from just one side, an advantage inplant layout. The grinding zone is the mainadvantage and disadvantage. It has no rollers,bearings or machinery to service, whichavoids the inherent possibility of failures.However, it does not effectively use the wearmaterials. The grinding components of a largeEL-type mill weigh 15,000 lb when new andperhaps 10,000 lb when worn. Almost twothirds of the wear material is scrapped. Still,the EL-type mill remains a workhorse inpower plants across the USA.

The EL-type mill has its roots in the industrialrevolution and very early pulverized coalfiring. The EL-type mill employs the ball/raceconcept for grinding coal. A rotating racedrives the balls and a stationary race appliesgrinding force. The Fuller Company createdsome of the early ball-race mill concepts inearly 1900’s.

The mill series really started with the A-type mill and then progressed to the E-type mill. The A-type mill was designed and built by Fuller-Lehigh around 1917.Fuller-Lehigh continued with the ball raceconcept through the B, C, D and E type mills.Many were sold to Babcock and Wilcox(B&W) for pulverized coal fired boilers. In the1950’s, B&W bought the E-type mill designand started their own production.

B&W made an improvement to the E-type mill to create the EL-type mill in thelate 1950’s. The ball race concept wasretained, but the throat geometry andclassifier were improved. The improvementincreased the performance of the E-type millby 25%. Many operating E-type mills wereconverted to the EL-type.

The EL-type mill declined in popularity asboiler size rapidly increased in the 1960’s.The ball race concept has vibration andmechanical limitations in very large sizes.The Cyclone firing scheme that did not requirepulverizers also became popular for B&Wboilers. B&W made one last effort in the ballrace concept in the late 1960’s. The CounterRotating (CR) Type ball race mill wasdesigned. It did not work well and the entireconcept was dropped in favor of the roll/ringMPS Type mill.

Intro to EL-type Mill

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Alstom combines its more than 100 yearsexperience in designing and building coalpulverizer equipment, its solution-basedproducts and services and a commitment tocustomer service into the Alstom advantage.

Alstom provides timely delivery of itspulverizer products to meet the demands ofthe power industry. We have been adedicated customer service organization fornearly 50 years ensuring the responsivenessthat our customers require.

Alstom provides the quality of an OEM whilebacking our products with comprehensivesupport. Our products are designed to helpour customers meet the performance,availability and reliability requirements fortheir pulverizer equipment.

Technical ServicesAlstom’s Technical Services capabilities covermajor plant equipment and systems andinclude outage planning, equipmentinspections, condition assessments, andoperational support. We are a global providerof products and services to the powerindustry. We maintain a local presence tohelp ensure that our customers’ equipmentand systems run reliably and efficiently withthe availability they demand.

• We are a team of over 100 field-basedengineers and technicians

• We are problem solvers• We are equipment inspectors, testers,

and evaluators• We are performance specialists

We are your extended team, helping youincrease your competitive edge and achieveyour plants’ goals and objectives.

Markets ServedOur experience and customer base includesutility companies, regional electriccooperatives, federal, municipal andindependent power producers, pulp and papercompanies, and industrials such as chemicalplants, steel mills and refineries.

In other words, if you generate steam toproduce power or to support yourmanufacturing processes, Alstom standsready to provide the Technical Services you need.

Equipment SupportedIn addition to Alstom equipment we serve the following brands:

BoilersABB, Combustion Engineering, Babcock & Wilcox, Riley, and Foster Wheeler

Coal PulverizersABB, Combustion Engineering, Babcock & Wilcox, Riley Atrita, Foster Wheeler

Air Pollution ControlABB, Combustion Engineering, Flakt,Walther, Carborundum, Hamon-ResearchCottrell, Wheelabrator, Peabody, Rockwell

The Alstom Advantage

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Ash Handling SystemsABB, Combustion Engineering, Allen-Sherman-Hoff, United Conveyor, Flakt

StokersABB, Combustion Engineering, Detroit Stoker,Riley, Westinghouse, Hoffman, Taylor

Coal FeedersABB, Combustion Engineering, Stock Equipment

Field Technical Service EngineersAs a leading supplier of steam generationequipment, Alstom has extensive capabilitiesin the form of Field Technical ServiceEngineers to assist with your outageinspection and maintenance needs.

Our staff is positioned near our customers toprovide the response they need. This full timeforce of professionally trained engineers andtechnicians receives ongoing training to helpensure they are knowledgeable in the latesttrends and available technology.

They are backed by our engineering groups with years of experience in designing new units as well as modifyingexisting equipment.

For additional support they know they canrely on other Alstom organizations such asthe Materials Technology Center, our NDEgroup, and Performance Testing.

Outage PlanningEffective outages require outage planning, a continuous process that begins well inadvance of the scheduled event. Alstom

stands ready to participate in this process tohelp ensure timely decisions, problemavoidance, and achieved goals.

The services Alstom provides include:• Setting overall outage objectives • Work scope determination• Prioritization of outage tasks• Identification of material and parts needs• Expediting delivery of required material and

parts on order

Inspection ServiceTo help ensure an effective outage, we offerour Inspection Service that includes:• Pre-outage logistics and work

scope definition• Pre-outage unit walk-downs• Detailed inspections during the outage• Daily punch lists and definition of items

requiring immediate attention• Coordination with repair labor personnel• Initial report with critical findings

and recommendations• Final detailed inspection report complete

with photos, recommendations and findings• On-line retrieval (via our website) of

our final report for convenient viewing and downloading

Maintenance Support ServiceTo help ensure your equipment performs toyour expectations, we offer our MaintenanceSupport Service whereby we:• Determine equipment condition and need

for repairs• Compare components to original

specifications and help make adjustments• Participate in developing work scope and

associated tasks• Direct maintenance personnel in proper

disassembly and assembly procedures• Coordinate execution of the work scope• Develop a daily punch list prioritizing

work tasks• Provide a final report documenting work

performed and recommendations made

Dedicated Engineer ProgramFor customers continuing support, we providean experienced Alstom Technical ServicesEngineer for their exclusive use for a specifictime period.

The Dedicated Engineer becomes an on-sitemember of the plant team spearheading therequired Alstom support. The result isresponsive service in determining root causesto problems and timely development andimplementation of solutions to help reach andexceed station goals.

CommitmentAlstom’s Technical Services is anotherexample of our commitment to provideproducts and services to improveperformance and reduce maintenance, withthe goal of increasing your competitive edge.

Inventory

Management ProgramsWith our proven inventory managementexpertise, purchasing strength andstrategically located regional service centers,participation in an Alstom InventoryManagement Program can offer customerssignificant benefits – from guaranteedshipments to improved cash flow.

Advantages and Benefits• Guaranteed parts availability• Eliminates exposure to obsolete inventory• After hours response team• Can include most plant equipment• Can be expanded to include other plants

within the Customer’s system• One week standard shipment after order

release

Value to User• Reduced annual caring costs• Deferred cash outlay• Increased cash flow by delivering products

when needed• Firm blanket pricing

Outage KitsOutage Kits are pre-packaged supplies ofequipment-specific replacement parts thatsupport planned or unexpected unit outagesand rebuilds. Emergencies cost money!Outage Kits can help minimize costly delaysin making repairs.

Outage Kits are the perfect solution whenemergencies strike, or just to have on hand aspart of a planned PM or InventoryManagement Program.

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Outage Kits are an

excellent, cost-effective

way to help manage

planned or unexpected

unit outage repairs.

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Advantages and Benefits• Customized or standard kits offered• Pay for what you use• Reduced maintenance costs

Value to User• Right parts available when you need them• Only pay for the parts you use

Alstom Service

and Distribution CentersAlstom’s Service Center network, strategicallylocated across the country, can provideemergency component repairs, parts,complete component overhauls, customfabrications, and cost saving inventorymanagement programs for both our fleet andnon fleet equipment.

Locations• Suwanee, Georgia• Erlanger, Kentucky• Tyler, Texas• Harrisburg, Pennsylvania• Aurora, Colorado• Chattanooga, Tennessee

Tubing Distribution Center)

Advantages• Responsive, flexible network• Allows for better utilization of

plant personnel• Inventory near your location• Just-in-time deliveries• Saves you time and money

R3 Component

Rotation ProgramsAlstom offers customers a systematic methodfor rebuilding boiler related equipment andreturning this equipment to service. Alstom’sRegional Service Centers are the focus of thisprogram combining their extensive inventory,rebuild portfolio and proven processes toprovide a unique service.

The R3 program is based on Rebuilding,Restocking and Replacing components.

Rebuilding Complete disassembly and inspection of acomponent takes place. Worn out parts arereplaced and components repaired. Thecomponents are rebuilt to strict proceduresand tolerances. Upgrades to components can be included.

RestockOnce a rebuild is completed the component is placed in the customer’s exclusive stockinventory at a Regional Service Centernearest the plant.

ReplaceRebuilt components are returned to acustomer when needed to replace a similarcomponent requiring service. The replacedcomponent is then sent back to the Service Center for rebuilding and to continue the process.

Rebuilding is an economical alternative tobuying new equipment. Rebuilt equipmentis kept at an Alstom location until neededfreeing up plant storage space. The process eliminates down time waiting for a component to be rebuilt and placed back in service.

S E R V I C E C E N T E R S

Pulverizer

Rebuild / Repair Services As a leading supplier of quality pulverizerequipment and replacement parts, Alstomoffers one of the industries most completeand cost-effective rebuilding/ repairingservices.

Alstom’s rebuild / repair services typicallyinclude component inspections andmaintenance, replacement and designupgrades. These offerings, which includeextended warrantees, can reduce inventorycosts by 25-35 percent and result in longer lasting products that save powerproducers money.

Advantages & Benefits• All work is done to engineering

specifications• R3 Component Rotation Programs are

available to fit your outage schedule• Extensive parts inventory to support

rebuilds / repairs• OEM inspection and assembly procedures

are used• Component upgrades available

Value to User• Alstom quality and reliability• Customer inventory reduction• All work backed by Alstom’s

engineering experience• A cost effective alternative to new

equipment purchases with shorterlead times

Alstom’s EL-type mill rebuild /repairportfolio includes:• Yoke Repairs• Air Seal Repairs• Rotating Assemblies• Spring Bolt Rebuilds• Bearing Plate Repairs• Gear Case Repairs• Pinion Repairs• Gearbox Overhauls

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Up to 50% cost savings

vs. the purchase of

new equipment

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Rebuild/Repair Services

Yoke RepairsThe Yokes in an EL-type mill take a beating,but fortunately, they are repairable and rarelyneed replacement. Alstom reconditions allyoke sizes and styles. Alstom weld repairs,hard surfaces, machines and re-bushes theyoke back to as new condition.

The fit between the main shaft and the yokeis critical to long and reliable shaft life. Arebuilt yoke has a standard machined bushingtaper. The yoke must be hand fit to the mainshaft during assembly. As an alternative,Alstom offers fitting and bluing to mate theyoke to the main shaft. See the RotatingAssemblies section for this service.

Repair ScopeBasic Service• Disassemble• Blast to clean • Dimensionally and NDT inspect

Based on inspection additional services

can include:

• Weld up worn areas as required • Weld up bushing bores • Wear protect (hardface) high wear areas • Tap wedge ring holes • Machine wedge ring area • Machine grinding ring seating surface • Install new yoke bushing and drive pin • Paint

Customer Benefits: • Saves ~50% of replacement cost• Saves 20–30 man-hrs in Assembly

Air Seal RepairsAir seals are critical to contain the hotprimary air within the mill and prevent dustyhot air from contaminating the mill gearbox.They also reduce heat transfer into thegearbox. If your gearbox oil is running hot orcontaminated, the air seal may needreplacement and repair.

Alstom can repair the air seal for the EL 64,70 and 76 mills with new bronze insertssaving substantial cost over replacement. Ifthe top of the air seal is worn or damaged,Alstom can cut off the damage and weld in anew seal carrier and save the housing.

Repair ScopeBasic Service• Disassemble• Blast to clean • Dimensionally inspect


can include:

• Remove old seals • Weld up air seal area as required • Replace seal carrier if necessary • Machine to accept new bronze

labyrinth seals • Install new seals • Install new air pipe(s) • Paint

Customer Benefits: • Saves ~50% of replacement cost• Faster turn around vs. new purchase

Rotating AssembliesThe mill rebuild schedule is tight and you areworried about blue fitting the yoke and gearcenter in an uncontrolled environment. It hasto be done correctly for long shaft life andreliability, but the schedule must be met. Aready to run rotating assembly is the answer.Alstom will inspect, repair and rebuild yourspare yoke, gear center and other parts orsupply new ones. A new high quality shaftwill be made and fit blue to the yoke and gearcenter. Run outs of the mounting faces arechecked and cut if needed.

Available for EL 64, 70 and EL 76 Rotor Assemblies

Rebuild ScopeBasic Service • Disassemble• Clean • Dimensionally inspect


can include:

• NDT yoke and gear center for cracks • Weld repair/Machine yoke, and install new

yoke bushing and drive pin • New main shaft – See ‘Alstom upgraded

keyless main shaft option’ • New SuperNut upgrade – See ‘Alstom

upgraded keyless main shaft option’ • Blue fit gear center to main shaft • Blue fit yoke to main shaft • Machine yoke seating surface and gear

center as required • Document blue fit with photos and

inspection documents • Paint

Customer Benefits• Saves ~50% of replacement cost• Saves 20–30 man-hrs• 90% contact pattern on blue fit of yoke

to main shaft

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Rotating Assembly Ready for Shipment

Yoke Contact to Shaft

Building Rotating Assembly Gear Center Contact to Shaft

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Spring Bolt RebuildsAlstom can rebuild your EL 64, 70, and 76Mill size Spring Bolt assemblies.

Rebuild Scope Basic Service• Disassemble• Clean • Dimensionally inspect


can include:

• Repair housing• Replace key• Recondition retaining ring• Replace nut and adjusting

bolt and hardware• Paint• Fill with grease

Customer Benefits• Less cost than new assembly • Rotation program available

Worn, Dirty and Seized

Rebuilt and Ready

Bearing Plate RepairsBearing Plates wear from rejects rubbing onthe top surface. Usually, Bearing Plates arerepaired using inserts to replace the wornmaterial. In rare cases, a Bearing Plates isdamaged beyond repair and a new one isrequired. Alstom offers the original cast ironmaterial and an improved steel Bearing Platefor popular mill and shaft sizes.

Repair ScopeBasic Service• Disassemble• Blast Clean• Dimensionally and NDT inspect


can include:

• Clean Tapped holes• Prime, Paint/cosmolene protect• Sleeve bore• Machine flat top and bottom

mounting services• Replace seal and cover rim area• Replace seal and cover floor area• Replace seal, cover, floor and air seal

mounting surface

Customer Benefits• Saves ~50% of replacement cost• Rotation programs available

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Worn Top Bearing Plate

Bearing Plate Repairs and Rebuilds

Repaired Top Bearing Plate

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Gear Casing RebuildsReplacement of the EL gear case with a new component can be a very expensive andlead time intensive task. While Alstom cansupply new gear casings, we have developeda rebuild process for restoring EL gear casesto original specifications withoutcompromising the quality or structuralintegrity of the component.

Rebuild ScopeBasic Service• Blast Clean• Dimensionally inspect


can include:

• Sleeve bearing bore if necessary• Re-machine bearing and oil pump pedestal

as required• Re-machine upper flange area and

pedestal, parallel and to original dimension• Paint inside cast surfaces with

gearbox sealer• Paint outside, non-machined surfaces,

of gear case with high temperature paint• Final inspect gear case• Cosmoline protect machined surfaces

to prevent rust

Customer Benefits• Saves ~50% of replacement cost• Rotation programs available

Pinion RebuildsAlstom power has the capability of rebuildingyour EL 64, 70 and EL 76 Pinion Assemblies.The Pinion Assemblies can be rebuiltindividually or as a sub-component of thelower half of the EL mill.

Rebuild ScopeBasic ServicePinion Housing & Assembly• Disassemble• Clean• Inspect


can include:

Pinion Housing• Re-machine housing ends• Cosmolene Protect

Pinion Assembly• Dimensionally record bores and shaft

diameters• NDT shaft and pinion gear• Replace bearings and packing• Reassemble/Cosmolene Protect

Customer Benefits• Saves ~50% of replacement cost• Faster turn around vs. new purchase

Rebuilt Gear Cases Available

EL Pinion Assembly – BEFORE

EL Pinion Assembly – AFTER

Gearbox OverhaulsThe EL-type gearbox is a well designed, andbuilt machine. It will provide decades ofreliable service when properly assembled,maintained and operated. The bearings andgears have very high calculated lives anddesign factors. The time between rebuildsdepends mostly on operation. A properlyloaded mill will run much longer than low ordry operation. Foreign material causes highshock loads that can damage the gearbox andshorten its life.

Alstom has all the parts and services to putthe gearbox back to original condition orimprove the equipment for today’s demands.

Alstom has the capability of rebuilding the fulllower half of the EL mill as a single unit orthe individual sub-components depending onthe customer preference.

Rebuild ScopeBasic Service• Disassemble• Clean• Inspect


can include:

• Replacement parts such as gears, bearings,shafts, seals

• Rebuild to as-new conditions• Rebuilt gearboxes• Fleet rebuild programs• Rental agreements• Purchase options

Customer Benefits• Saves ~50% of replacement cost• Rotation programs available • Rebuild the individual sub-components

of the mill• Rebuild an entire lower mill and have it

delivered before you take your operating mill off-line

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Reassemble the lower half of your

EL mill in a shop environment

Line Boring Rebuilt Gearbox in Alstom Shop

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Upgrades for EL-type MillsAlstom continues to design and develop EL-type products that will meet the changingneeds of our customers. Our performanceupgrades can help when looking at fuelswitching and the changing Environmentalregulations. They include solutions to increaseyour mill capacity, improve fineness and offerbetter fineness control. Our availabilityupgrades provide longer wear life, reducemaintenance costs, eliminate a number ofmechanical problems and improve the overallreliability of your mill.

Performance UpgradesThe following upgrades are available for theEL 64, 70 and 76 mills. Typically, theupgrades install directly into the mill withvery little modification. While somecompanies guess at flow characteristics,estimate velocities, and ignore particleloading, Alstom mathematically models thepulverizer and scientifically designscomponents for better performance.

Upgrade options include:

EL Mill ConversionThe various EL pulverizers are very similar indesign and size. An EL 64 can be convertedto a EL 70 and an EL70 can be converted toan EL76 while retaining much of the originalpulverizer system. Alstom has doneconversions and saved PA fans, PA fanmotors, mill motors, mill gearbox, mill turret,mill feeder, pulverized coal piping andburners. Typically the mill housing, grindingrings and yoke require replacement and it isrecommended that the gearbox be overhauledduring conversion.

All proposed conversions are first evaluated byAlstom engineering to ensure the conversionwill perform correctly.

Upgrade

1. EL-type 64mill convertedto EL-type 70

2. EL-type 70mill convertedto EL-type 76

Description

Mill conversionsto increase

mill capacity up to 17%

Features

Reuses themajority of

your existingequipment

Advantagesand Benefits

Greater fuelflexibility

Value to User

Recapturecapacity lost

with fuelchanges

EL Mill Conversions

Availability UpgradesThe following upgrades are available for theEL 64, 70 and 76 mills. These productsdirectly replace the OEM product in fit and form but will last longer, and are more reliable.

Ceramic Lined and Vacuum Bonded LinersCeramic lining is the best wear solution for high erosion, low impact locations. Alstom offers the most comprehensive wear solutions available.

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Product

DYNAWEAR™

DYNAWEAR II™

DYNAWEAR III™

Application

Staticapplications only

Typical Use:• cones• wall liners• turretsStatic andDynamicapplications

Static andDynamicapplications

Note:Brazing methodrestricts use tocertain types of materials

Description

Adhesivebonded aluminaceramic tiles

Vacuum bondedproduct availableinboth aluminaceramic ortungsten carbide tiles

Brazed TungstenCarbide tiles

Features

Pre-engineered,mechanicallyinterlockedsystem

BLOME GroutAdhesiveCustomizedapplication foryour specificwear pattern

Tensile Strength:6000+ psi

Shear bondstrength:4000+ psiHigh wearresistance

Excellent impactresistance

Advantagesand BenefitsSimplifiedinstallation

Aids installationand helps fillvoids betweentilesImpact resistant

Can be usdedwith complexshapes

Longer run timebeforereplacmement isneeded

Valueto UserReduced costs

Easy to fabricate

Extends timebetweenoverhaulsReduced costs

Easy to fabricate

Extends timebetweenoverhauls

Reduces totalcost ofownership

Extends timebetweenoverhauls

Upgrades Improve Reliability

and Availability

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Spring Bolt UpgradeSpring Bolts apply load to the grinding ringthrough the dual purpose springs. They alsolocate the grinding ring and prevent itsrotation. Proper spring setting improves milloperation. Therefore, ease of adjustment iscritical. Alstom offers an upgraded spring boltthat includes ACME threads with an optionalsplit adjusting nut and a sealed spring boltassembly. The ACME thread is coarser andwider than the original design which preventscoal from building up on the thread surface.The split adjusting nut cleans the thread as itis tightened on the shaft. The seal preventscontamination, reduce shaft wear and keepdust out.

Features• Improved Spring Bolt adjustment• Self-cleaning split adjusting nut• ACME Threads• Sealed Spring Bolt assembly

Advantages and Benefits• Ensures proper spring setting• Easier and more precise adjustment• Stronger ACME threads

Value to Customer• Improved mill operation• Longer service life

Heavy Duty SpringsHigh moisture coal tends to accumulate inthe mill. The bed of coal on the bottom ringgets deep and the balls ride over it. Thesprings are compressed more than usual andthey are highly stressed. In addition, the ballsare no longer securely held in the top raceand are not under control. This can result inthe balls riding out of the track. The solutionis the heavy-duty spring.

Features• Larger diameter spring• Higher spring constant

Advantages and Benefits• Applies greater force as it compresses• Produces lower spring stress levels for equal

forces

Value to User• Better reliability• Longer life

Thermal Barrier Coating

for Bottom RingThe ball race mill was never intended for highmoisture coals. The high moisture demandshigh temperature air to the mill to properlydry the coal. The hot air and wet coal createcracking problems for the bottom grindingring because very hot air is blowing aroundthe outside while wet coal is pouring over it.The temperature difference across the ringcan lead to cracking.

Another remedy for this situation is the hightemperature ring arrangement. This consistsof a two-piece grinding ring and seat. Thehigh temperature arrangement can requiremajor mill and coal pipe modifications due toits greater height.

Alstom has a better alternative, the ThermalBarrier Coated (TBC) ring. The standardbottom ring has a Ceramic TBC applied to theoutside, in the throat, safety band and abovethe seal ring. The TBC lowers ring differentialtemperature by 100°F or more. It is simpleand effective, there is no waiting for specialparts and no major mill modifications.

Features• Thin ceramic spray

Advantages and Benefits• No adjustments need to maintain air gap• Protects the bottom ring from large

temperature gradients during operation• Reduces risk of cracking when using high

moisture fuels like PRB

Value to User• Better reliability when using high moisture

fuels like PRB

Clampless Bolt-Thru

Housing LinersThe standard design of the EL housing linersutilize two small clamps to help secure theliner to the upper pulverizer housing. Theseclamps wear over time and can fail allowingthe liners to fall into the grinding zone,resulting in severe damage to the pulverizerand emergency shutdown. By using Alstom’sbolt through style liners, you eliminate thesmall housing unit clamps, thus eliminating apotential issue and increasing run timebetween outages.

Some liners also use pockets that slide over“T” bolts. These “T” bolts are sometimesdifficult to position into the pockets. WithAlstom’s bolt thru liners installation is straightforward and requires less time.

Features• Bolt-thru design eliminates housing

unit clamps

Advantages and Benefits• Easy to install• Increased time between outages• Eliminates the possibility of the housing

unit falling into the grinding zone during operation

Value to User• Increased reliability• Improved performance

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Main Shaft UpgradesSince most main shaft failures occur in theyoke key slot, Alstom has redesigned the shaftto eliminate this stress point. Alstom’s keylessdesign decreases the shaft fatigue stress by afactor of two and in many cases preventsshaft failure. It does not require any majormodifications to the yoke, air seal housing,upper bearings or bearing plate.

All keyless shafts can be supplied with thestandard VAD (vacuum arc degassed)material or VAR (vacuum arc re-melt)material. Vacuum arc re-melt is an additionalstep in the manufacturing process thateliminates material impurities. This results ina strong shaft less prone to breaking. VAR isstandard for all 8 3/4" shafts.

Additionally, for those EL-type 76 mills thatrun with the original 8" main shaft, Alstomoffers an 8 3/4" diameter shaft upgrade. Thislarger diameter shaft is stronger and helpsprevent shaft failure due to the significantforces encountered during normal operation.This upgrade is available with in bothstandard key or keyless style.

All Alstom main shafts are made from highquality, high strength, certified and inspectedforgings. The steel is ultra-clean to eliminateinclusions where a crack could start and leadto failure. The forging is heat-treated andmaterial samples are destructively tested toassure the correct material properties. Theforging is accurately machined to finaldimensions, shot peened in high stress areasfor additional fatigue strength, and finallymagnetic particle inspection. These are thebest main shafts available.

EL-type Mill Main Shaft OptionsMill Size EL76 EL76 EL70 EL70

EL64 EL64Shaft Size 8-3/4" 8" 8" 7-1/2"Standard Keyed Shaft 8003096 8004470 8005597 7001572Keyless Shaft 8003096S 8004470S 8005597S 7001572S

Keyless Shaft UpgradeAlstom has developed a main shaft designthat eliminates the keyway making the shafttwice as strong

By precisely mating the shaft to the hub oryoke and seating it firmly with the SuperNut(see upgrade below) the drive torque istransferred without a keyway.

Major modifications are not required for thisconversion. The original bearings, gearcenters, hubs and yokes are used, althoughthe yoke bushings must be replaced.

Features• Vacuum arc re-melted forging• Certified chemical and mechanical properties• Ultrasonically inspected• Precision CNC machined• Polished keyways• Shot-peened high stress areas• Final magnetic particle inspection

Advantages and Benefits• Twice as strong as the standard design• No major modifications required• SuperNut technology• Available for all EL-type pulverizer sizes

Value to Customer• Improved reliability• Reduced maintenance costs• Reduces shaft breakage

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SuperNut UpgradeThe Alstom Supernut upgrade was designedto allow the removal of the keyway in theshaft taper area, the weakest part of theshaft, where most shaft failures occur.

Other bonuses of the Supernut includerepeatable installation force, and are muchsafer to install, since you will not need to“slug” on a hex nut, which can be dangerous,and of unknown force.

The SuperNut uses many smaller bolts toproduce the seating force. The yoke is notheated and the nut is not hammered Force isaccurately applied by torquing the smallerbolts – a simple one-man job.

The shaft seating force of the SuperNut isgreater than the heating method resulting ina better assembly.

Additionally, with the SuperNut upgrade theyoke can still be pulled from the shaft afteryears of service. Alstom has removed yokesfor repair and has reused the SuperNutwithout difficultly.

Features• Increased number of smaller bolts

Advantages and Benefits• Easily tightened with torque wrench• No yoke heating required• Produces 500,000+ lbs of seating force

(Standard Nut Produces 5,500 lbs)• Yoke can still be removed with a

standard puller• Better shaft taper sealing• Easy installation• Efficient disassembly

Value to Customer• Improved reliability• Reduced maintenance costs• Improved safety • Reduces shaft breakage when used in

conjunction with Keyless Shaft upgrade

Yoke removal can be a challenge for themaintenance crew. The geometry of the shaftand yoke bore is known as a “locking taper”.When the taper angle is below 7 degrees, theparts will self-lock together. With very goodcontact between the mating parts, it is verydifficult to pull them apart. The Alstom yokepuller makes this task easier. With a 150-tonram (supplied by user), the yoke can bepulled from the shaft.

With the yoke loose from the shaft, lifting andremoval become the next chore. Rigging anddrifting are time consuming. Alstom’s yokehandling fixture speeds the task. Designedfor low height, it fits through the mill doorand on to the yoke. Slots for a forklift speedthe lifting and transport.

22

Special Tools

23

Assett Planning and Life Cycle Worksheet: EL Pulverizer

25

Replacement Parts for EL-type Mills

All part numbers in this section are for reference only. Please verify with you Alstom representative before ordering.

26

Gearbox Replacement Parts

Typical EL76, EL70 and EL64 Main Shaft Assembly

27

Item Description Part No.

5 BUSHING, YOKE, 8-3/4", KEYED-STANDARD 7001657BUSHING, YOKE, 8-3/4", KEYED-OVERSIZED 8005086BUSHING, YOKE, 8-3/4", KEYLESS 7001657S

10 YOKE, W/O BUSHING, WEDGE STYLE 8005083DOWEL, YOKE DRIVE PIN 8000806

15 LOCK PLATE 700010920 YOKE NUT 7003931

SUPERNUT FOR KEYLESS SHAFT AR-500-6COVER FOR SUPER NUT AR-500-6-C

25 PIN-COTTER “T” HD .062 X 1.500 " MD8-00099-GC30 NOT APPLICABLE35 NOT APPLICABLE40 NOT APPLICABLE45 SCR-SET HEX KNL CUP PT .375X.500 MD8-00082-BL50 GEAR-PINION SET (GEAR AND PINION) 880187755 BOLT KI-79973 Mk360 GEAR CENTER 800521665 LOCKNUT 7003182

LOCK PLATE 700377370 SLINGER 700159575 NOT APPLICABLE80 OIL SEAL 880359985 BOLT-HEX .625 X 1.500 IN MD8-00044-DF90 WASHER-LOCK REG SPG .625" 15-200695 STUFFING BOX 7001458

100 ROLLER BEARING 0456131105 BEARING SPACER - INNER 8005072

BEARING SPACER - OUTER 8002341110 THRUST PLATE KS-87134115 THRUST BEARING 0456411120 RETAINER, THRUST BEARING 7002003125 SHIM PACK 8000041130 ROLLER BEARING 0456287135 MAIN SHAFT, 8-3/4", KEYED W/ THRUST PLATE,

KEYS AND YOKE NUT 8003096MAIN SHAFT, 8-3/4", KEYLESS W/ THRUST PLATE,KEY, GEAR CENTER NUT, MUST USE SUPERNUT AR-500-6 8003096S

140 KEY, GEAR CENTER 8005142145 KEY, YOKE 8002281

MAIN SHAFT ASSEMBLYEL76, 8-3/4" SHAFT

28


5 BUSHING, YOKE, 8" KEYED, STANDARD 7000135BUSHING, YOKE, 8", KEYED, OVERSIZED 8005079BUSHING, YOKE, 8", KEYLESS, STANDARD 7000135KLBUSHING, YOKE, 8", KEYLESS, OVERSIZED 8005079S

10 YOKE, WEDGE STYLE CallDOWEL, YOKE DRIVE PIN 8000806


SUPERNUT FOR KEYLESS SHAFT AR-500-5COVER FOR SUPERNUT AR-500-5-C

25 PIN-COTTER “T” HD .062 X 1.500" MD8-00099-GC30 HELICAL SPRING 700001635 WASHER-PLAIN TYPE A .438" (W) MD8-00032-AJ40 NUT-HEX .375 IN 11-200645 SCR-SET HEX KNL CUP PT .375X.500 MD8-00082-BL50 GEAR-PINION SET 880187755 BOLT KI-79973 Mk360 GEAR CENTER 800521665 LOCKNUT 7003182

LOCK PLATE 700377370 SLINGER 700286475 GLAND 303574280 PACKING 234SQPACK85 BOLT-HEX .625 X 1.500 IN MD8-00044-DF90 WASHER-LOCK REG SPG .625" 15-200695 STUFFING BOX 7002863

100 ROLLER BEARING 0456130105 BEARING SPACER – INNER 8002343

BEARING SPACER – OUTER 8002341110 THRUST PLATE KS-87134115 THRUST BEARING 0456411120 RETAINER, THRUST BEARING 7002003125 SHIM PACK 8000041130 ROLLER BEARING 0456287135 MAIN SHAFT, 8", KEYED,W/ THRUST PLATE

AND KEYS 8004470MAIN SHAFT, 8", KEYLESS, W/ THRUST PLATE AND KEY, MUST USE SUPERNUT AR-500-5 8004470S


MAIN SHAFT ASSEMBLYEL76, 8" SHAFT

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MAIN SHAFT ASSEMBLYEL70 and EL64, 8" SHAFT


5 BUSHING, YOKE, 8" KEYED, STANDARD 7000135BUSHING, YOKE, 8", KEYED, OVERSIZED 8005079BUSHING, YOKE, 8", KEYLESS, STANDARD 7000135KLBUSHING, YOKE, 8", KEYLESS, OVERSIZED 8005079S

10 YOKE, EL70, WEDGE STYLE 8005084YOKE ASSM, EL70, W/ BUSHING & PIN 8005089-WSKYOKE ASSM, EL70, W/ BUSHING & PIN, KEYLESS 8005089-WSKLYOKE, EL64, WEDGE STYLE 8005124YOKE ASSM, EL64, W/ BUSHING & PIN 8005129-WSKYOKE ASSM, EL64, W/ BUSHING & PIN, KEYLESS 8005129-WSKLOTHER YOKE STYLES AND REBUILDS AVAILABLE - CALLDOWEL, YOKE DRIVE PIN 8000806



25 PIN-COTTER “T” HD .062 X 1.500 " MD8-00099-GC30 HELICAL SPRING 700001635 WASHER-PLAIN TYPE A .438" (W) MD8-00032-AJ40 NUT-HEX .375 IN 11-200645 SCR-SET HEX KNL CUP PT .375X.500 MD8-00082-BL50 GEAR-PINION SET 880187755 BOLT KI-79973 Mk360 GEAR CENTER 800521665 LOCKNUT 7003182



BEARING SPACER - OUTER 8002341110 THRUST PLATE KS-87134115 THRUST BEARING 0456411120 RETAINER, THRUST BEARING 7002003125 SHIM PACK 8000041130 ROLLER BEARING 0456287135 MAIN SHAFT, 8", KEYED, W/ THRUST PLATE,

KEYS AND NUTS 8005597MAIN SHAFT, 8", KEYLESS, W/ THRUST PLATE AND KEY, MUST USE SUPERNUT AR-500-5 8005597S


30

MAIN SHAFT ASSEMBLYEL70 and EL64, 7-1/2" SHAFT


5 BUSHING, YOKE, 7-1/2" KEYED, STANDARD 8005085BUSHING, YOKE, 7-1/2" KEYED, OVERSIZED 7000171BUSHING, YOKE, 7-1/2" KEYLESS, STANDARD 8005085-KLBUSHING, YOKE, 7-1/2" KEYLESS, OVERSIZED 7000171S

10 YOKE, EL70, WEDGE STYLE 8005084YOKE ASSM, EL70, W/ BUSHING & PIN 8005088-WSKYOKE ASSM, EL70, W/ BUSHING & PIN, KEYLESS 8005088-WSKLYOKE, EL64, WEDGE STYLE 8005124YOKE ASSM, EL64, W/ BUSHING & PIN 7501111-WSKYOKE ASSM, EL64, W/ BUSHING & PIN, KEYLESS 7501111-WSKLOTHER YOKE STYLES AND REBUILDS AVAILABLE - CALLDOWEL, YOKE DRIVE PIN 8000806



25 PIN-COTTER “T” HD .062 X 1.500 " MD8-00099-GC30 HELICAL SPRING 700001635 WASHER-PLAIN TYPE A .438" (W) MD8-00032-AJ40 NUT-HEX .375 IN 11-200645 SCR-SET HEX KNL CUP PT .375X.500 MD8-00082-BL50 GEAR-PINION SET 880187755 BOLT KI-79973 Mk360 GEAR CENTER 800521665 LOCKNUT 7003182



BEARING SPACER - OUTER 7000107110 THRUST PLATE KS-87134115 THRUST BEARING 0456411120 RETAINER, THRUST BEARING 7002003125 SHIM PACK 8000041130 ROLLER BEARING 0456287135 MAIN SHAFT, 7-1/2", KEYED, W/ THRUST PLATE,

KEYS AND NUTS 7001572MAIN SHAFT, 7-1/2", KEYLESS, W/ THRUST PLATE, AND KEY, MUST USE SUPERNUT AR-500-5 7001572S


31


5 NUT-SLOTTED 2"-8N 71636-Mk610 PUMP DRIVE PINION 700016715 NUT-SLOTTED 3-1/2"-8N 71636-Mk5

WASHER, PINION GEAR 800323820 GEAR-PINION SET 880187725 SCR-CAP HEX HD .625 X 1.500 IN MD8-00053-EG30 RETAINER RING 700200235 ROLLER BEARING 880335140 THRUST RING 700154945 KEY, OIL PUMP PINION GEAR 71636-MK450 KEY, PINION DRIVE GEAR 71636-MK355 PINION SHAFT 800487460 KEY, DRIVE COUPLING 71636-MK265 THRUST BEARING 045639570 SHIM SET KS-7165175 SCR-CAP HEX HD .750 X 2.250 IN MD8-00053-HH80 NUT-HEX JAM .625 IN 11-401185 PACKING GLAND 700148690 LANTERN RING 7002732

PACKING 234SQPACK95 STUFFING BOX 7001456

100 PINION SHAFT SLINGER 7001596105 ROLLER BEARING 8803352110 PINION BEARING HOUSING 8004870

SHIM SET, PINION HOUSING MOUNTING FLANGE 8000043

EL76, EL70 and EL64 Pinion Shaft Assembly

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Oil Pump Assembly


5 OIL PUMP ASSEMBLY, CW* 700015710 SCR-CAP HEX SOC HD .875 X 3.000" 13-438415 SHIM SET, 5 pcs (2 - 0.005, 1 - 0.010, 1 - 0.020) KS-81315

SHIM SET, 7 pcs (2 - 0.010, 1 - 0.020, 3 - 0.030, 1 - 0.040) 8004871

20 GEAR, OIL PUMP 700016825 NUT-HEX .750 IN 11-200030 WASHER-LOCK REG SPG .625" 15-2006


1 PUMP HOUSING-MACHINED ASSEMBLY 7000157-82 OIL PUMP DRIVE GEAR 70014813 OIL PUMP IDLER GEAR 70014824 OIL PUMP PLATE 7000157-45 OIL PUMP PLATE 7000157-56 ELB-STREET 1.00 X 90 CL150 NPT 12-40277 CYLINDRICAL ROLLER BEARING GP-13198

*Alstom can supply CCW pumps on request

Oil Pump PartsAlstom recommends replacing the entire assembly. If individual parts are needed, Alstom cansupply them.

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Bearing Plates

Mill Size Main Shaft Size Matl. Part Number Comments

EL76 8.75" Iron 8000843EL76 8.75" Steel 8000843-stEL76 8" Iron 8000843EL76 8" Steel 8000843-stEL70 8" Iron 8005467EL70 8" Steel 8005467-stlEL64 8" Iron 8803354EL64 8" Steel 8803354-stl

Specify the number andlocation of pyrites openingswith respect to pinion shaft.

Specify oil line locationwith respect to pinion shaft

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5 HOUSING, SEAL AIR, EL76, 8-3/4" SHAFT 7001487HOUSING, SEAL AIR, EL76, EL70, EL64, 8" SHAFT 7002211HOUSING, SEAL AIR, EL70, EL64, 7-1/2" SHAFT 3060891

10 LABYRINTH AIR SEAL UPPER, EL76, 8-3/4" SHAFT 7003949LABYRINTH AIR SEAL UPPER, EL76 EL70 EL64, 8" SHAFT 8005366LABYRINTH AIR SEAL UPPER, EL70 EL64, 7-1/2" SHAFT 3027896

15 LABYRINTH AIR SEAL LOWER, EL76, 8-3/4" SHAFT 7003948LABYRINTH AIR SEAL LOWER, EL76 EL70 EL64, 8" SHAFT 8005491LABYRINTH AIR SEAL LOWER, EL70 EL64,7-1/2" SHAFT 3031298

Air Seal Housing Replacement Parts

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SEAL RING ASSEMBLY, EL76, ONE PYRITE OPENING 7001538SEAL RING ASSEMBLY, EL76, TWO PYRITE OPENINGS 8003207

SEAL RING ASSEMBLY, EL70, ONE PYRITE OPENING 7000732SEAL RING ASSEMBLY, EL70, TWO PYRITE OPENINGS 8005127COVER RING ASSEMBLY, EL70, ONE PYRITE OPENING 8000691COVER RING ASSEMBLY, EL70, TWO PYRITE OPENINGS

SEAL RING ASSEMBLY, EL64, ONE PYRITE OPENING 7000154SEAL RING ASSEMBLY, EL64, TWO PYRITE OPENINGS 8005126COVER RING ASSEMBLY, EL64, ONE PYRITE OPENING 8004000COVER RING ASSEMBLY, EL64, TWO PYRITE OPENINGS

Seal and Cover Ring Replacement Parts

36


THROAT PLATE, EL76, ONE PYRITE OPENING 8000668THROAT PLATE, EL76, TWO PYRITE OPENINGS 7001540



SHIM, THROAT PLATE, EL47 to EL76, 12 GAUGE 7001578SHIM, THROAT PLATE, EL47 to EL76, 22 GAUGE 7001579SHIM, THROAT PLATE, EL47 to EL76, 16 GAUGE 7001580

SHIM KIT, 48 PIECES 8005061

Throat Rings and Shims Replacement Parts

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GATE ASSEMBLY, COMPLETE 80019985 HINGE BRACKET 8001998A

10 SUPPORT 8001998B15 HINGE PIN 8001998C20 SPRING PIN MD8-00075-KH25 JAM NUT 11-300730 COUNTER WEIGHT 1/2" GP-1342435 COUNTER WEIGHT 3/16" GP-13424-140 RELIEF GATE 7000146

RELIEF GATE w/o HUMP 7000146W45 SCR-CAP HEX HEAD 13-307250 WASHER - LOCK 15-200455 WASHER - PLAIN MD8-00022-AE60 NUT 11-2007

RELIEF GATE ASSEMBLYEL76

Relief Gate Assemblies and Parts

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GATE ASSEMBLY, COMPLETE 8002394HINGE ASSEMBLY (HINGES, PIN, COUNTER WEIGHTS) 8005067

5 HINGE GP-1342210 SUPPORT GP-1342315 HINGE PIN GP-1342620 ROLL PIN MD8-00075-KH25 JAM NUT 11-300730 COUNTER WEIGHT 1/2" GP-1342435 COUNTER WEIGHT 3/16" GP-13424-140 RELIEF GATE 7000137

RELIEF GATE w/o HUMP 7000137W45 SCR-CAP HEX HEAD 13-307250 WASHER - PLAIN MD8-00022-AE55 WASHER - LOCK 15-200460 NUT 11-2007



GATE ASSEMBLY, COMPLETE 80032235 HINGE 8003223A

10 SUPPORT 8003223B15 HINGE PIN 8003223C20 ROLL PIN MD8-00075-KH25 JAM NUT 11-300730 COUNTER WEIGHT 1/2" GP-1342435 COUNTER WEIGHT 3/16" GP-13424-140 RELIEF GATE 8003223D45 SCR-CAP HEX HEAD 13-307250 WASHER – PLAIN MD8-00022-AE55 WASHER – LOCK 15-200460 NUT 11-2007


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PYRITE GATE ASSEMBLY, COMPLETE 70015755 DOOR FRAME 8002408

10 GATE 7000389GATE WITH GEAR RACKS 8002376

15 DOOR BRACE 131630B20 SHAFT 800549825 SET COLLAR 8005498A30 SPRING 700008735 WASHER 15-100640 WRENCH45 WASHER 15-100250 BOLT 13-303655 RACK 3069797

RACK SPECIAL W/O V GROOVE 3069797 SPEC60 PINION 8003225

PINION SPECIAL W/O V GROOVE 8003225 SPEC65 SPACER 8002408A

PYRITE GATE ASSEMBLYEL76, EL70 and EL64

Pyrite Gate Assemblies and Parts

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Grinding Zone

MaterialsAlstom’s grinding ring and ball castings aremade from the highest quality alloy castingsfor long life. Years of experience in the designand manufacture of pulverizers gives Alstomthe capability to supply these castings. Thepower industry has settled on two preferredmaterials for NiHard and High Chrome.NiHard is a nickel alloy casting and not aspopular as it once was. High Chrome is a 20% chromium alloy casting and is almostused exclusively.

All Alstom grinding part castings are HighChrome unless otherwise stated. NiHardcastings can be special ordered.

Trade Name Standard Relative

Wear

NiHard ASTM A532, Class I, Type D 1High Chrome ASTM A532, Class II, Type D 2


5 WEDGE RING SET 700000810 HOUSING LINER - MAIN 3046659

10A HOUSING LINER - MAIN, FLUTELESS 3046659FLHOUSING LINER CLAMP FOR ITEMS 10 AND 10A 7001685

10B HOUSING LINER - MAIN, THROUGH BOLTED GP-1437015 GRINDING BALL SEE TABLE20 TOP GRINDING RING 7001551

TOP GRINDING RING, LARGE SPRING 7001551LS25 SPRING, 1-1/2" 7000049

SPRING, 1-5/8" 700017530 HOUSING LINER – DOOR 3046660

30A HOUSING LINER – DOOR, FLUTELESS 3046660FL30B HOUSING LINER - DOOR, THROUGH BOLTED GP-1437135 NOT APPLICABLE40 BOTTOM GRINDING RING 7001546

BOTTOM GRINDING RING, THERMAL BARRIER COATED 7001546TBC

GRINDING ZONE ASSEMBLYEL76

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T BOLT, LOCK WASHER, NUT FOR ITEM 10 800311210A HOUSING LINER - MAIN, THROUGH BOLTED GP-13387

BOLT, LOCK WASHER, NUT FOR 10A GP-1382315 GRINDING BALL SEE TABLE20 TOP GRINDING RING 700155225 SPRING, 1-1/2" 7000049

SPRING, 1-1/2", TWO SET SCREW FLATS 700018430 HOUSING LINER – LEFT, DOOR 4506511

HOUSING LINER – LEFT, DOOR, THROUGH BOLTED GP-1338935 HOUSING LINER – RIGHT, DOOR 4506597

HOUSING LINER – RIGHT, DOOR, THROUGH BOLTED GP-1338840 BOTTOM GRINDING RING 7001552





T BOLT, LOCK WASHER, NUT FOR ITEM 10 800311215 12LL SEE TABLE20 TOP GRINDING RING 700155025 SPRING, 1-1/2" 700004930 HOUSING LINER – LEFT, DOOR 700005835 HOUSING LINER – RIGHT, DOOR 700005940 BOTTOM GRINDING RING 7001548



Description Part No.

14" GRINDING BALL GP-1295013-5/8" GRINDING BALL GP-1374412-1/4" GRINDING BALL 700143611-7/8" GRINDING BALL 450661111-1/4" GRINDING BALL 700143910-1/2" GRINDING BALL 70014409-7/8" GRINDING BALL 70014389-1/4" GRINDING BALL 70014418-1/2" GRINDING BALL 7001437

GRINDING BALLS

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Spring Bolts


NEW SPRING BOLT ASSM W/O SOCKET 7000165NAREBUILT SPRING BOLT ASSM W/O SOCKET 7000165RA

5 BUTTON HEAD GREASE FITTING A118610 SPRING BOLT 700145515 SPRING SOCKET, KEY AND RIVETS 7000051

SPRING SOCKET, KEY AND RIVETS, 1-5/8" SPRING 304939720 RIVET 18-226725 SPRING BOLT HOUSING, KEY AND RIVETS 7000165

REBUILT SPRING BOLT HOUSING, KEY AND RIVETS 7000165R30 RIVET 18-227335 ADJUSTING NUT 700005240 RETAINER 7000114

SET SCREW, RETAINER GP-1331245 SCREW – CAP, HEX SOCKET HEAD 0492319

HI COLLAR LOCK WASHER 0493464

SPRING BOLT ASSEMBLYEL76, EL70 and EL64

43

UPGRADED SPRING BOLT ASSEMBLYWITH SEALS AND ACME THREADS

EL76, EL70 and EL64


NEW SPRING BOLT ASSY 3064833REBUILT SPRING BOLT ASSY 3064833RA

5 SPRING BOLT, ACME THREAD 306483210 SPRING BOLT HOUSING 3064829

REBUILT SPRING BOLT HOUSING 3064829R15 SCREW - CAP HEX SOCKET HEAD 049231920 RETAINER 303495530 ADJUSTING NUT, ACME THREAD 3034957

ADJUSTING NUT, ACME THREAD, SPLIT 3034957S45 WASHER – LOCK 049346450 WASHER – LOCK MD8-00026-AM60 SCREW – CAP MD8-00080-CE65 CAP – END 18658670 SCREW – CAP HEX SOCKET HEAD GP-1347575 O-RING MS2877580 SEAL 3250-2562-250-F85 BUTTON HEAD GREASE FITTING A1186

44

Classifier Assembly


5 NUT HEX 11-200710 WASHER-PLAIN MD8-00032-BA15 BOLT-HEX MD8-00044-DE20 CLASSIFIER ASSEMBLY LOUVER SECTION 700244125 NUT-HEX 11-200830 CENTER SECTION, 400 Bhn PLATE 124347D

CENTER SECTION, SPACER, USE WITH 8005063 700246835 BOLT-HEX MD8-00044-BD40 NUT-HEX 11-200045 BOLT-HVY HEX MD8-00045-FC50 TAILING SECTION, TALL, 24-1/2", 400 Bhn PLATE 8005069-2

TAILING SECTION, SHORT, 22", 400 Bhn PLATE 800506955 BOLT-HVY HEX MD8-00045-LE60 TAILING DISCHARGE SEAL, 400 Bhn PLATE 700018965 EXTENSION VANE GP-13199

CLASSIFIER ASSEMBLYEL76

45


5 NUT-HEX 11-200710 WASHER-PLAIN MD8-00032-BA15 BOLT-HEX MD8-00044-DE20 CLASSIFIER ASSEMBLY LOUVER SECTION 800506825 NUT-HEX 11-200830 CENTER SECTION, 400 Bhn PLATE 800421135 BOLT-HEX MD8-00044-EF40 NUT-HEX 11-200045 BOLT-HVY HEX MD8-00045-FC50 TAILING SECTION, 400 Bhn PLATE 800225955 BOLT-HVY HEX MD8-00045-LE60 TAILING DISCHARGE SEAL, 400 Bhn PLATE 700018965 EXTENSION VANE GP-13199



5 NUT-HEX 11-200710 WASHER-PLAIN MD8-00032-BA15 BOLT-HEX MD8-00044-DE20 CLASSIFIER ASSEMBLY LOUVER SECTION 800511525 NUT-HEX 11-200830 CENTER SECTION, 400 Bhn PLATE 700168135 BOLT-HEX MD8-00044-EF40 NUT-HEX 11-200045 BOLT-HVY HEX MD8-00045-FC50 TAILING SECTION, 400 Bhn PLATE 700156355 BOLT-HVY HEX MD8-00045-LE60 TAILING DISCHARGE SEAL, 400 Bhn PLATE 700018965 EXTENSION VANE GP-13199


Notes

46

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Alstom Power Inc.2000 Day Hill RoadWindsor, CT 06095-0500Tel: 860.282.5400Fax: 860.285.9611www.service.power.alstom.com

EL-Type Pulverizer Products and Services

Documents

Transcript of EL-Type Pulverizer Products and Services