- Lubricating oil is unnecessary because the Jac disc coupling has no sliding, frictional, or moving parts.
Therefore, there is no friction or noise, and energy loss is low, with no dirty oil to cope with.
- Higher torsional and no backlash.
For equipment such as machine tools with numerical controllers, indexing system, and printing machines
requiring accruate shaft rotation and phase control, Jac disc coupling are best suited because of their
high torsional stiffness.