CFH series are standard track rollers and are used for the same usage with CF and CR and are needle roller bearings with identical components and range of operation.

On the other hand, handle of the stud has eccentricity of approximately 0.25~1.0mm so that you can adjust the stud towards the central shaft by rotating the stud.

This can be applied to compensate for lack of accuracy for repositioning with cam home, backlash and for level adjustment for hole machining when installing multiple products.

Hexagonal wrenches are usually more comfortable than screwdrivers when rotating the stud. Therefore, JMC supplies stud type track rollers with hexagonal wrench socket placed on head of the stud.