Reli-a-flex - Transmission Error in Reliance couplings

Errors in rotation

Transmission Error is the error introduced into a system by an inconsistent transfer of motion from one side to the other.

As a system component the Reli-a-Flex® coupling will only introduce very small velocity and hence position fluctuations.

This coupled with a stiffness greater than 10 times single spiral couplings means that in bi-directional movement applications (as shown on the graph) Reli-a-Flex® is the only choice.

Errors in typical applications

Typical couplings used to drive a 0.250" lead leadscrew.

Bi-directional error introduced by typical couplings used to drive a 0.250" lead leadscrew.

Reli-a-Flex® 0.001 mm
4-beam spiral 0.006 mm
Single spiral 0.012 mm
Typical couplings used to drive an encoder

Bi-directional error introduced by typical couplings used to drive an encoder.

Reli-a-Flex® 0.5 counts
4-beam spiral 2.0 counts
Single spiral 4.0 counts