Oldham's couplings - ASA ELECTRONICS INDUSTRY CO.,LTD

Slider abrasion

Oldham's coupling absorbs mainly parallel misalignment through the slider sliding along its groove. So on condition that there is large parallel misalignment with load torque, abrasion will progress on the slider's groove during each rotation, resulting in an increased backlash. (This is especially true for metal sliders.) If you need to avoid the increase of backlashes on the conditions of large torque and long-term use, you should adjust shafts less misalignment.

Slider fracture

When transmission torque is applied, the part of slider caught between the drive and driven side projections is pushed outward. So a large load torque beyond the elasticity tolerance of slider will cause a deformation of slider, and, eventually, can rupture it in the deformation direction. If the fracture occurs in such a way, it is deemed that the slider has been exposed to an excessive load torque.