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Advanced Lubrication Solutions forConstruction Sector

CONTENTSolutions for Productivity and Peace of Mind 01

Lubrication of Concrete Batching Plant 02

Lubrication of Concrete Mixer Trucks 11

Lubrication of Concrete Pump Trucks 16

01

Solutions for Productivityand Peace of MindIn an Industry as competitive as yours, completing the projects ahead of time is critical for business profitability. Your customers depend on you for best quality of work without missing the timelines. Unscheduled downtime and breakdowns must be kept at minimum and Mobil offers advanced lubrication solutions to enable higher productivity for the challenging conditions of the construction sector.

Exceptional productsOur lineup of Mobil™ oils and greases helps protect your critical equipment, minimize downtime and deliver customer satisfaction.

World-class servicesWe complement these lubricants with hands-on guidance and application expertise from our skilled engineers to help you handle your toughest challenges.

Comprehensive solutionsOur state-of-the-art products and services harmonize in a complete solution that can help your operation attain new levels of safety, environmental care and productivity.

Lubrication of ConcreteBatching Plant

Concrete Batching Plant

A combined system used for the centralized mixing of concrete, also

known as concrete precast yard.

Concrete Batching Plant

Concrete Batching plant: The aggregate silo (container for sand and gravel) is at the bottom. After the aggregate is metered, it needs to be conveyed by the inclined belt to the mixer, i.e. the aggregate must be lifted twice (once into the aggregate silo and once from the aggregate silo to the mixer).

Aggregate scale

Concrete silo

Powder scale

Mixer

Conveyor

Aggregate silo

Screw conveyor

System:

• Material storage system• Material metering system• Material handling system• Mixer• Control system

Lubrication points:

• Conveyor• Screw conveyor• Mixer• Air compressor• Hinge points

Lubrication challenges:

• Heavy load• Heavy pollution• All weather• Hard to maintain

Lubricant requirements:

• Anti-wear properties• Anti-rust properties• long oil life• Good flow performance at low temperature• good resistance to water and dust

04 05

Support bearing

Motor bearing

Conveyor

Screw conveyor

Lift bucket

Belt conveyor or lifting bucket

Screw conveyor

Aggregate handling systems often use

Concrete and admixture handling systems often use

Mobilgrease XHPTM 222

MobilgreaseTM EP2

Mobilith SHCTM 100/220

Mobil PolyrexTM EM


Reducer

Mobil SHCTM 600 Series

MobilgearTM 600 XP Series

MobilgearTM EP Series

Vertical shaft planetary mixer

Mixer

Lubrication key points and challengesHighest grease consumption

• Mixers used in concrete mixing stations are mainly in the following forms

1. Double shaft horizontal mixers (most common)

2. Vertical shaft planetary mixers

Mixes cement, aggregate and water into concrete; a key equipment for a mixing station.Mixer

Material Handling System

06 07

Double shaft horizontal mixer (most common)

1.Transmission

4.Cover

2.Shaft end seal

5. Mixing device

3.Cylinder block and liner assembly

6. Shaft seal grease supply device

7.Discharge door

Principles

Lubricationpoints

Motor bearing

Shaft seal greasesupply system

The motor is decelerated by the V-belt drive and the planetary reducer, and the power is

transmitted to the stirring spindle via the spline shaft and the spline bushing. ;At the same

time, the two speed reducers are connected in synchronization with the drive shaft to ensure

the synchronization of the two mixing spindles.

By injecting the grease,back pressure is createdto resist the entry of theconcrete slurry.

Four mixing shaft ends (with centralized grease supply system), motor bearings, gearbox,

hydraulic system

Lubricationchallenges When the shaft end seal fails, the concrete slurry will enter the rotation gap at the shaft end,

causing abnormal wear. This is one of the common failure modes of a twin-shaft mixer;:high

pollution, high impact.

Reducer




Mobilgrease XHPTM 221/222

MobiluxTM EP 1/2

MobilgreaseTM EP 1/2


Mobil PolyrexTM EM


MobiluxTM EP2

Lubrication of Double Shaft Horizontal MixersDouble Shaft Horizontal Mixer Structure

08 09

A hydraulic system controls the opening and closing of the discharge door

Horizontal hydraulicstation

Cylinder

Induction head

Pendulumshaft

Proximity switch

Hydraulic system

Mobil DTETM 10 ExcelSeries

Mobil DTETM 20 Ultra Series

NutoTM H Series

1.Motor; 2.Reducer; 3.Support;4.Slewing bearing; 5.Revolving body;6.Planetary gear; 7.Planetary shaft;8.Side scraper arm; 9.Scraper;10.Mixing arm; 11.Mixing blade;12.Mixing cylinder;

Planetary shaft

Mobilgrease XHPTM Series

MobiluxTM EP Series

MobilgreaseTM EP Series

As the planet carrier rotates, the three mixing shafts in the box rotate around the drum, but

also rotate at a high speed on their own. As a result, the material is subjected to strong

shearing and kneading to achieve its goal of full dispersion and mixing. The plant carrier has

a scraper blade that rotates along the planet carrier to continuously scrape the wall of the

drum, so that the drum wall has no stagnant material, further improving the mixing effect.

Motor bearing


Mobil PolyrexTM EM


MobiluxTM EP2

Reducer




Hydraulic system

Mobil DTETM 10 Excel Series


NutoTM H Series

Principles

Lubrication of Vertical Shaft Planetary Mixers Lubrication of Double Shaft Horizontal Mixers

• Pneumatic control system drives cylinders, vibrators, flow-assisted air cushions and other components to perform door opening and closing, vibration start and stop, arching start and stop, etc.

Reciprocating air compressor

Mobil RarusTM 800 Series


Concrete Mixer Trucks

10 11

Lubrication of Air Compressor

Engine

Chassis

Hydraulic pump Water tank Mixing drum

Axle

Power system

Hydraulicpump

Hydraulicmotor

Mixing andunloading

Mixingdrum Reducer

Axle Wheels DriveGearbox

Engine

Powertakeoff

Power takeoff Gearbox Wheel hub

Equipment for transporting precast concrete from a concrete mixing station to the construction site. Concrete mixertrucks account for the majority of concrete machinery and they consume more grease than any other type of concretemachinery.

Double Shaft Horizontal Mixer Structure Structure of Concrete Mixer Trucks

Power takeoff + gearbox (GL-4)

Mobilube 1 SHCTM 75W-90

Mobilube® GX Series

Mobil DelvacTM 1 5W-40

Mobil DelvacTM MX ESP15W-40

Mobil DelvacTM MX PLUS15W-40

Power takeoff + gearbox • Power takeoff:

The gear transmission mechanism draws power from the engine to drive the variable pump of the hydraulic system. The mechanical energy is converted into hydraulic energy and transmitted to the quantitative motor, which drives the speed reducer. The reducer drives the mixing device and causes it to rotate in the mixing drum.

• The power takeoff and gearbox generally share the same oil tank.

Power takeoff

Gearbox

Engine

12 13

Hydraulic system



NutoTM H Series

Reducer (GL-5)



MobilgearTM EP Series Hub bearing (greases)


Axle (common differential)

MobilubeTM HD 80W-90

Axle (limited slip differential)MobilubeTM LS 85W-90

Hydraulic power steering system hinge points

Mobil® ATF 220 Automatic Transmission Fluid

MobilgreaseTM XHP 222

Hydraulic system + reducer• Drives the mixing drum to rotate, mixing the concrete to prevent it from solidifying during transportation; also used for loading and unloading;

• The power take-off drives the variable pump. The variable pump drives the hydraulic motor and the mixer drum is driven to rotate by the reducer.

14 15

Lubrication of Other Parts Of Concrete Mixer TrucksLubrication of Concrete Mixer Trucks

ConcretePump Trucks

Power system

Towing pumps On-vehicle pumps Pump trucks

• Motor/engine

• Hydraulic system

• Pump system

• Vehicle chassis

• Motor/engine


• Pump system

• Vehicle chassis

• Power distribution system


• Pump system

• Boom system

Disadvantages

• Require transport vehicle to move

• External delivery pipes needed before operation

• External delivery pipes needed before operation

• High price

• High maintenance cost

• Work height is subject to certain restrictions

Applications

• Relatively fixed construction sites

• High floor pouring

• Relatively fixed construction sites

• High floor pouring

• Middle and low rise buildings

• Complex work sites

• Low price

• High power, suitable for pumping to extra-high floors

• Low maintenance cost

• More cost-effective than pump trucks

• High mobility

• High power, suitable for pumping to extra-high floors

• Low maintenance cost

• High mobility

• High efficiency, no need for external delivery pipe before construction, can quickly be put into pouring operation

• Can be easily transferred to work sites

Advantages

16 17

Classification of Concrete Pump Trucks

After being transmitted from the engine to the gearbox, the power is divided into two outputs at the splitter box.

One is transmitted to the axle to drive the pump truck;. During concrete pouring operations, the power is switched.

The power is transmitted from the transfer case to the four-stage pump, and the pouring operation is completed by

the coordinated operation between the hydraulic pump and the motor of each hydraulic system.

• Heavy load operation:

During pouring operations, in order to provide sufficient power to drive the pumping system to pump concrete up to tens of meters in height, it is often necessary for the engine to work at a high gear. Sometimes, when pumping high-strength concrete, the engine will have to work at full capacity. High temperature and high pressure in the cylinder requires lubrication to have sufficient oxidation and wear resistance.

• Idle speed when waiting for materials:

A concrete pump truck generally needs to work with multiple concrete mixer trucks. Since an ordinary concrete mixer truck can only transport around 18 cubic meters of concrete, and smaller models are only capable of transporting 8 cubic meters of concrete, it is often necessary for mixer trucks to continuously ferry concrete from the mixing station to the construction sites. If the mixer trucks do not arrive on time, the concrete pump trucks would have to wait for the material feed. In order for the concrete in the hopper to not harden, it is necessary to ensure that the mixer in the hopper is always in operation during the entire construction operation, even as the pump truck is waiting for the material feed. As a result, the engine must stay on while waiting. The engine will switch to idle mode while waiting for the feed to reduce diesel consumption. Since the diesel fuel undergoes incomplete combustion when the engine is running idle, more soot is generated. Some of the soot will remain on the inner wall of the combustion chamber, so it is necessary for the engine oil to have good cleaning properties and be capable of dispersing the soot in the oil after cleaning. Therefore, the engine oil is required to have good dispersing performance.

Key challenges

Slewing

Boom

Engine Transfercase

Swingcylinder

Mixingmotor

Gearpump

Boompump

Gearbox

Outrigger

Axle

Four-stagepump

Transmissioncylinder

Mainhydraulicpump

Constantpressurepump

18 19

Power System of Concrete Pump Trucks – EnginePower System of Concrete Pump Trucks

Output

Input Four-stage pump

Gearbox (GL-4)


Transfer case




Traditional manual gearbox • The input end of the transfer case is connected to the output end of the gearbox. By controlling the left and right movement of the fork 18, the clutch sleeve 19 is brought to the left or to the right to realize the transmission of power to the axle or the four-stage pump.;

• Heavy load, high impact

20 21

Power System of Concrete Pump Trucks - Transfer CasePower System of Concrete Pump Trucks - Gearbox

Mixer

Hopper

Main cylinder

Pumpsystem Comprises hopper, conveyor cylinder, S valve, mixer, swing cylinder, conveying pipe, etc.

Pumpprinciple The main oil pump drives the main oil cylinder, and the main cylinder pushes the piston in the

conveying cylinder and move back and forth to realize the suction and pumping of the concrete in

the hopper. One end of the S valve in the hopper is connected to the discharge cone, while the

other end is connected to the outlet of the conveying cylinder (with a gap of about 2mm). The

constant pressure pump continuously switches between the docking of the S valve and the two

delivery cylinders by driving the oscillating cylinder. The conveying cylinder works with the oscillat-

ing cylinder to continuously pump the concrete. The hopper is equipped with a mixer, and the gear

pump drives the mixing motor to rotate the mixer so that the concrete in the hopper is mixed twice

to prevent segregation and hardening. The water in the water tank is mainly used to lubricate the

piston and form a certain back pressure to prevent or reduce the gap between the crucible piston

and the inner wall of the conveying cylinder where concrete may enter.

Hydraulic system

Boom multi-way valve



NutoTM H Series

Water tank

Transmissioncylinder Piston

Swingcylinder

DischargeconeS valve

• Hydraulic system:

Comprises four connected pumps, main cylinder, oscillating cylinder, mixing motor, swing motor, boom display cylinder, outrigger cylinder, and control system; core system of the pump truck.

• High pressure: up to 35Mpa

• Control system precision: with servo valve

• High oil temperature: Normal working oil temperature is 50°C-70°C, in some cases, up to 95°C

22 23

Power System Of Concrete Pump Trucks - Hydraulic SystemPump System of Concrete Pump Trucks

Drives boom slewing The hopper mixing bearing and S valve support bearing use a centralized greasesupply for lubrication.

Transition gear

Slewing support

High strengthbolt and nut

Slewingreducer

Slewing supportbearing

Slewing supportouter ring

Protective cover

Protectivecover

Drive gear

Fixed turret

Turntable

Slewing supportinner ring

Slewing ring


MobiluxTM EP Series


Slewing reducer

Mobil® Glygoyle® Series

MobilubeTM HD 80W-90

Hopper centralized grease supply system


MobiluxTM EP Series


• Power takeoff:

The gear transmission mechanism draws power from the engine to drive the variable pump of the hydraulic system. The mechanical energy is converted into hydraulic energy and transmitted to the quantitative motor, which drives the speed reducer. The reducer drives the mixing device and causes it to rotate in the mixing drum.

• The power takeoff and gearbox generally share the same oil tank.

24 25

Concrete Pump Trucks - Centralized Grease Supply SystemConcrete Pump Trucks - Slewing Mechanism

Joint lubrication points


MobiluxTM EP Series


S/N:1

S/N:2


Mobil PolyrexTM EM


MobiluxTM EP 2







Mobilgrease XHPTM 221/222

MobiluxTM EP 1/2

MobilgreaseTM EP 1/2



NutoTM H Series


MobilgreaseTM EP2

Lubricationpoints

Lubricationpoints

Shaft seal greasesupply system

Oilrecommendation

Oilrecommendation


Mobil PolyrexTM EM


MobiluxTM EP 2

Motor bearing Reducer

Motor bearing Reducer Hydraulic system


Mobil PolyrexTM EM


MobiluxTM EP 2





MobiluxTM EP Series




NutoTM H Series

Lubricationpoints

Oilrecommendation

Motor bearing Reducer Hydraulic systemPlanetary shaft

Support bearing

Handling system

Double shaft horizontal mixers

S/N:3

Vertical shaft planetary mixer

Lubricationpoints Reciprocating air compressor

S/N:4

Pneumatic control system

Oilrecommendation



26 27

Batching Plant Lubrication Recommendation Table Concrete Pump Trucks - Joint

Lubricationpoints

Oilrecommendation

Power takeoff + gearbox

Mobilube® GX Series Mobilube 1 SHCTM 75W-90

Power takeoff + gearbox

EngineLubricationpoints

Oilrecommendation

Engine

Mobil DelvacTM 1 5W-40 Mobil DelvacTM MX ESP 15W-40 Mobil DelvacTM MX Plus 15W-40

Lubricationpoints

Oilrecommendation

Hinge points

Hinge points

Mobilgrease XHPTM 222/223 MobiluxTM EP2/3

Lubricationpoints

Oilrecommendation

Hydraulic power steering system

Hydraulic power steering system

Mobil® ATF 220 Automatic Transmission Fluid MobilgreaseTM XHP 222

Lubricationpoints

Oilrecommendation

Hub bearing (greases)

Hub bearing

MobilgreaseTM XHP 222

Lubricationpoints

Oilrecommendation

Hydraulic system

Hydraulic system

Mobil DTETM 10 Excel 46 Mobil DTETM 25 Ultra Series Mobil NutoTM H46

Lubricationpoints

Oilrecommendation

Mixing drum reducer

Mixing drum reducer

Mobilube® HD 80W-90

Lubricationpoints

Oilrecommendation

Axle (common differential)

Axle

Mobilube® HD 80W-90

Axle (limited slip differential)

Mobilube® LS 85W-90

GearboxLubricationpoints

Oilrecommendation

Gearbox


Transfer caseLubricationpoints

Oilrecommendation

Transfer case

Mobil SHCTM 600 Series MobilgearTM 600 XP Series MobilgearTM EP Series

Hydraulic systemLubricationpoints

Oilrecommendation

Hydraulic system

Mobil DTETM 10 Excel Series Mobil DTETM 20 Ultra Series NutoTM H Series

Hopper centralized grease supply systemLubricationpoints

Oilrecommendation

Hopper centralized grease supply system

Mobilgrease XHPTM Series MobiluxTM EP Series MobilgreaseTM EP Series

Slewing mechanismLubricationpoints

Oilrecommendation

Slewing ringSlewing reducer

Mobil® Glygoyle® Series Mobilube® HD 80W-90

Mobilgrease XHPTM Series MobiluxTM EP SeriesMobilgreaseTM EP Series

Joints Lubricationpoints

Oilrecommendation

Joints

Mobilgrease XHPTM Series MobiluxTM EP Series

28 29

Pump Truck Lubrication Recommendation Table Mixing Station Lubrication Recommendation Table

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