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20B-2 duplex plate sprockets

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20B-2 duplex plate sprockets

20B-2 plate sprockets are duplex plate wheels for 20B-2 chain of 1 1/4" (31.75 mm) pitch to DIN 8187 / ISO 606. Two tooth rims spaced to match the chain strands allow very high forces to be transmitted.

20B-2 duplex plate wheels instead of a massive hub sprocket

Instead of a massive hub sprocket you buy a flat plate wheel, which is easier to transport and mount on your own hub. A bolted-on rim can be replaced without removing the hub from the shaft, and C45 steel copes well with high loads and is easy to machine.

20B-2 plate sprockets in C45 steel with unhardened teeth

20B-2 duplex plate wheels in C45 steel, with unhardened teeth. 20B simplex plate wheels, also hardened, can be found in the Simplex (single-row) subgroup.

Bolts for fixing a 20B-2 plate wheel - questions and answers

Which bolts should I use to bolt on the plate wheel?

High-tensile bolts, evenly spaced on a pitch circle. Choose their number and diameter according to the torque transmitted by the drive.

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