BuildYourCNC - #25 Roller Chain

#25 Roller Chain

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#25 Roller Chain (per foot)

$2.40

Total Length:

Introduction:

This is the chain that mates with the #25 sprockets.

Description:

Use this chain to achieve the finest resolution roller chains can offer. The material is steel and the pitch is .25". This chain is sold by the foot. Adjust the quantity in the cart to specify the length of roller chain.

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Previously answered questions:

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[#25 Roller Chain] What size gear could I add to your #25 design to increase torque by around 3x?

Torque is measured from the center of the shaft to the pitch diameter divided by 2 of the sprocket in inches or feet and is able to move (rotate) with a force at this measurement tangential to the pitch diameter circle. The smaller this pitch diameter is, the less torque is required by the motor to turn the sprocket under load. If you are starting with a large sprocket, say with a pitch diameter of 5 inches (2.5 inches radius), it is easy to reduce the size of the drive sprocket to increase the mechanical advantage. All you need to do is take the 2.5 inches and divide that by 3 to find the new pitch radius.
Click the link to add information to this solution:
[107] What size gear could I add to your #25 design to increase torque by around 3x?

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Instructions

Basic information on sprockets and roller chain. This video explains the uses of drive sprockets and idler sprocket and goes into some details of the geometry of the sprockets, how they work and various configuration that can be used with sprockets and roller chain. Information on calculating the steps per inch is also explained.

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Roller Chain Link #40 shown with a pencil tip for scale.

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