Cushion couplings - ASA ELECTRONICS INDUSTRY CO.,LTD

Introduction

Cushion couplings absorb eccentricity, declination, and rotational vibration through the deformation of cylindrical cushions which surround hub projections. The six cushions are fully independent, so each can deform in the most effective manner, easily handling issues of misalignment or rotational vibration.

There are four types of cushion material. The defferences in hardness leaves between them are reflected in their torsion properties eccentricity properties.

Selection precautions

･Please select cushion of soft (or torsion spring constant is small) for rotational load such as Pumps that torque vibration occurs.

Prioritizing normal torque and selecting a hard cushion can cause the bases of the hub's projectiong elements to be damaged first due to metal fatigue.

･For servo or cam drive loads, etc., with large inertial masses, select soft cushions for the same reason, as well as sufficiently large torques.

･Use a normal torque of 1/2 of the rated torque for constant operation at the maximum rpm.

･Apply grease to cushion connection sides in the event of large amounts of eccentricity, declination, expansion/contraction,etc.

QJ/QJU

Adjust the normal torque based on the ambient temperature (see table below).

･Cushion UB,UY, and UR can be used in operationg environments with temperatures of up to 60℃.

･Cushion NK can be used in operating environments with temperature of up to 80℃.