DK Conveyor Chain Sprocket · Continuous flow conveyor, bucket elevator, coil conveyor, pan...

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Photo / Sprocket DK Conveyor Chain Sprocket Photo/ Sprocket Sprocket DK Conveyor Chain Sprocket ( ) Welded sheet steel sprocket ( ) Cast steel sprocket [Indication] DK 32200 S-10 W 1. 2. ( ) Welded sheet steel sprocket 3. ( ) Cast steel sprocket 4. Welded sheet steel Number of teeth Roller type Chain size Brand name DK 65300 R-10 Number of teeth Roller type Chain size Brand name DK 75 H 300 M-12 W Welded sheet steel Number of teeth Roller type Chain pitch Size Chain type Brand name Chain size DK 160 Z 300 M-12 Number of teeth Roller type Chain pitch Size Chain type Brand name Chain size To ensure that a chain conveyor will fully function, correct matching of conveyor chain and sprockets is necessary. For smooth engagement between the chain and sprockets and accurate feeding of the chain, note the following points for the designing of sprockets. Number of teeth Generally, smoother and more durable operation is ensured with larger number of teeth and sprockets, so ten or more teeth are recommended. If the conveyance speed is extremely low (10 m/min or less) under a uniform load, the number of teeth can be decreased down to six. Tooth form For accurate and smooth operation of chain conveyors, two types of tooth forms are used depending on the sprocket size: for small sprockets (11 or less teeth) and large sprockets (12 or more teeth). Processing of tooth form The tooth form is usually processed by precision gas cutting. When using chains at high speed or at high stop accuracy, etc., specify machined finishing. If you need wear resistance, induction hardening of teeth is recommended. Material ¡Hardening of teeth : All the driving sprockets are induction-hardened. Driven sprockets are treated to suit respective applications. ¡Comparison: Use cast iron sprockets for server service conditions like heavy load and high-temperature. Please note that the cost of cast iron sprockets is higher than the other type, and that the delivery takes longer. Chemical composition of materials (quoted from JIS) Hub dimensions and machining of shaft hole and key slot Sprocket standard hub dimensions for shaft diameters are listed on P327. When a plurality of sprockets are used on the same phase, the key slots of the sprockets should be aligned. Specify this when ordering. The sprockets can be delivered with the shaft holes as prepared. When you finish the shaft holes, refer to the bottoms of teeth. Shaft diameter and hub dimensions For "Shaft Diameter and Hub Dimensions", see P327. [Welded sheet steel sprocket] [Cast steel sprockets] Material C Si Mn P S Steel SS400 0.050 or less 0.050 or less S43C 0.400.46 0.150.35 0.600.90 0.030 or less 0.035 or less S45C 0.420.48 0.150.35 0.600.90 0.030 or less 0.035 or less SCC3 0.300.40 0.300.60 0.500.80 0.04 or less 0.04 or less SCMn3 0.300.40 0.300.60 1.001.60 0.04 or less 0.04 or less Name Description Applicable conveyor Welded sheet steel Cast steel (Hub) Rolled steel for general structural purposes (SS400) (Teeth) Carbon steel for machine structural purposes (S43C or S45C) Cast high tensile carbon steel SCC3 etc.Cast low manganese steel SCMn3 etc.Continuous flow conveyor, bucket elevator, coil conveyor, pan conveyor, apron conveyor, dust conveyor (roller chain type) etc. Large bucket elevator, coil conveyor, dust conveyor (block chain type) etc. Dust conveyor (block chain type), drag chain conveyor etc.

Transcript of DK Conveyor Chain Sprocket · Continuous flow conveyor, bucket elevator, coil conveyor, pan...

Page 1: DK Conveyor Chain Sprocket · Continuous flow conveyor, bucket elevator, coil conveyor, pan conveyor, apron conveyor, dust conveyor (roller chain type) etc. Large bucket elevator,

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DK Conveyor Chain Sprocket

( )Welded sheetsteel sprocket

( )Cast steelsprocket

[Indication]

DK 32200 S-10 W1.

2.

( )Welded sheetsteel sprocket

3.

( )Cast steelsprocket

4.

Welded sheet steelNumber of teeth

Roller type

Chain sizeBrand name

DK 65300 R-10

Number of teeth

Roller typeChain sizeBrand name

DK 75 H 300 M-12 W Weldedsheet steel

Number of teeth

Roller typeChain pitch

SizeChain type

Brand name

Chain size

DK 160 Z 300 M-12

Numberof teeth

Roller typeChain pitch

SizeChain type

Brand name

Chain size

To ensure that a chain conveyor will fully function, correctmatching of conveyor chain and sprockets is necessary.For smooth engagement between the chain and sprocketsand accurate feeding of the chain, note the following pointsfor the designing of sprockets.

Number of teethGenerally, smoother and more durable operation is ensuredwith larger number of teeth and sprockets, so ten or moreteeth are recommended.If the conveyance speed is extremely low (10 m/min or less)under a uniform load, the number of teeth can be decreaseddown to six.

Tooth formFor accurate and smooth operation of chain conveyors, twotypes of tooth forms are used depending on the sprocketsize: for small sprockets (11 or less teeth) and large sprockets(12 or more teeth).

Processing of tooth formThe tooth form is usually processed by precision gas cutting.When using chains at high speed or at high stop accuracy,etc., specify machined finishing. If you need wear resistance,induction hardening of teeth is recommended.

Material

¡Hardening of teeth : All the driving sprockets are induction-hardened.Driven sprockets are treated to suit respective applications.

¡Comparison: Use cast iron sprockets for server service conditions likeheavy load and high-temperature. Please note that the costof cast iron sprockets is higher than the other type, and thatthe delivery takes longer.

Chemical composition of materials (quoted from JIS)

Hub dimensions and machining of shafthole and key slotSprocket standard hub dimensions for shaft diameters arelisted on P327.When a plurality of sprockets are used on the same phase,the key slots of the sprockets should be aligned. Specifythis when ordering.The sprockets can be delivered with the shaft holes asprepared. When you finish the shaft holes, refer to thebottoms of teeth.

Shaft diameter and hub dimensionsFor "Shaft Diameter and Hub Dimensions", see P327.

[Welded sheet steel sprocket]

[Cast steel sprockets]

Material C Si Mn P SSteel

SS400 - - - 0.050 or less 0.050 or lessS43C 0.40~0.46 0.15~0.35 0.60~0.90 0.030 or less 0.035 or lessS45C 0.42~0.48 0.15~0.35 0.60~0.90 0.030 or less 0.035 or lessSCC3 0.30~0.40 0.30~0.60 0.50~0.80 0.04 or less 0.04 or lessSCMn3 0.30~0.40 0.30~0.60 1.00~1.60 0.04 or less 0.04 or less

Name Description Applicable conveyor

Weldedsheet steel

Cast steel

(Hub) Rolled steel for generalstructural purposes (SS400)

(Teeth) Carbon steel for machine structuralpurposes (S43C or S45C)

Cast high tensile carbon steel(SCC3 etc.)

Cast low manganese steel(SCMn3 etc.)

Continuous flow conveyor, bucketelevator, coil conveyor, pan conveyor,apron conveyor, dust conveyor (rollerchain type) etc.Large bucket elevator, coil conveyor,dust conveyor (block chain type) etc.Dust conveyor (block chain type),drag chain conveyor etc.

Page 2: DK Conveyor Chain Sprocket · Continuous flow conveyor, bucket elevator, coil conveyor, pan conveyor, apron conveyor, dust conveyor (roller chain type) etc. Large bucket elevator,

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StructureThe teeth can be replaced by twomethods: individual tooth replacementor sectional teeth replacement.The bolts and nuts used for mountingthe teeth on to the sprocket are spot-welded to prevent loosening.The respective structures are illustratedon the right.

The above photo and the top rightillustration show a sprocket forindividual tooth replacement. Since thejoint face between the replaced teethand the sprocket is formed in a uniquearc, the bonding accuracy is high andthe sprocket strength is enhanced.Furthermore, since the load acting onthe mounting bolts is decreased, thereis less possibility of loosening. Thissprocket construction is patented.

There are two types of hubs: caststeel and welded sheet steel hubs.Cast steel hubs are used for largesprockets receiving heavy loadsand welded sheet steel hubs forother applications.

Sprocket for individual tooth replacement

Note: Ask us for the delivery time.

Sprocket for sectional teeth replacement (example: division by four sections)

DK Detachable Teeth Sprockets PAT.

Any damage on the teeth surfaces of a sprocket diminishes the life of the conveyor chain.With conventional sprockets, considerably worn sprocket teeth were repaired by teeth padding or the entire sprocketwas replaced. In either case, repair was costly and with teeth padding, accuracy was impaired. We developed newsprockets with detachable teeth for independent replacement. This sprocket is highly rated by our customers for thedramatic savings in cost and time.

Dividing plane