Industrial Robots


bearings for industrial robots robots arm bearings

The development of modern industrial robots tends to be lightweight, and thin section. Since bearings must be installed in a limited space, the bearings for industrial robots need to be small in size and light in weight too. But at the same time, the robot's property such as high loading capacity, high rotation accuracy, high running stability, high positioning speed, high re-positioning accuracy, long service life, and high reliability needs to be secured by the matched robot bearings, so the bearings must have a good performance on loading capacity, precision, stiffness, low friction torque, long lifetime, and reliability as well.

Industrial robots bearing is the key component of industrial robots, it mainly includes six types: thin-section ball bearings, cross cylindrical roller bearings, harmonic reducer bearings, RV reducer bearings, linear bearings, joint bearings, and the first two types take the most market share.

Classification of bearings for industrial robots

Bearing Structure Application Precision
Thin section ball bearing Thin section four-point contact ball bearing
Thin section angular contact ball bearing
Thin section deep groove ball bear
Robot joints P5
Thin section crossed roller bearing Integrated inner/outer ring type,
Integrated inner ring with split outer ring type
Integrated outer ring with split inner ring type
Manipulators, swiveling units of robots P4
RV reducer bearing Angular contact ball bearing
Tapered roller bearing
Industrial robots P4
Harmonic reducer bearing CSF crossed roller bearing
SHF crossed roller bearing
CSD crossed roller bearing
SHD crossed roller bearing
Joint units of robots P5/P4