bush chain

1. Three Basic Dimensions
Pitch, Leaf Chain roller Diameter and Inner Width are referred to as the “Three Basic Dimensions of Roller Chain.” When these three dimensions are identical, roller chains and sprockets are dimensionally compatible.

2. Basic Parts
Link Plate
The plate is the component that bears the strain positioned on the chain. Usually this is a repeated loading, sometimes accompanied by shock. Therefore, the plate should never only have got great static tensile power, it must also hold up to the dynamic forces of load and shock.

Pin
The pin is subject to shearing and bending forces transmitted by the plate. At the same time, it forms a load-bearing part (together with the bush) when the chain flexes during sprocket engagement. Therefore, the pin requirements high tensile and shear power, resistance to bending, and must also have sufficient stamina against shock and use.

Bush
The bush is subject to complex forces from all parts, especially from the repetition of shock loads when the chain engages the sprocket. Therefore, the bush needs extremely high shock resistance. Furthermore, the bush forms a load-bearing part together with the pin and therefore requires great wear level of resistance.

Roller
The roller is subject to impact load as it mates with the sprocket teeth during engagement of the chain with the sprocket. After engagement, the roller changes its stage of contact and balance. It is held between the sprocket the teeth and bush, and moves on the tooth face while receiving a compression load. Therefore, it should be resistant to use and still have strength against shock, exhaustion and compression. (RS25 and RS35 are bush chains , nor have rollers).

Roller Link
Two bushes are press fit into two roller hyperlink plates and rollers are inserted to allow rotation around the exterior of the bushes during operation. This is the same for single and for multi strand chains.

Pin Link and Intermediate Plate
The pin link contains two pins that have been press fit into two pin hyperlink plates. In case of multi-strand roller chain up till size 08B, an intermediate plate is definitely put into the pin hyperlink. In the event of multistrand roller chain above size 08B, two intermediate plates are added to the pin link. The intermediate plates are slide fit for regular roller chain and press suit for SUPER roller chain.