Bearing Selection for High-Load Robot Joints

Humanoid robots and industrial robotic systems can place significant mechanical demands on their joints.

A joint bearing may need to support radial loads, axial loads and overturning moments while maintaining controlled rotation within a compact structure.

The bearing should be evaluated as part of the complete joint rather than as an isolated component.

Important factors include:

Bearing rating life can be calculated using established bearing calculation methods such as ISO 281, while actual application performance also depends on lubrication, mounting, load distribution and operating conditions.

→ ISO 281 — Rolling Bearings

For high-load robot joints, crossed roller bearings can be considered when high rigidity and moment-load capability are important.

→ Crossed Roller Bearings

Four-point contact bearings can be considered when a compact bearing needs to accommodate combined loading.

→ Four-Point Contact Bearings

Angular contact bearings may be appropriate for applications requiring controlled axial load capacity and rotational performance.

For other compact robotic mechanisms, deep groove ball bearings can also be considered depending on the load and speed requirements.

→ Robot Bearing Solutions

When standard bearings cannot meet the required space, load or interface requirements, customized bearing development may provide another option.

Beining Technology provides precision and customized bearing solutions for robotics and automation.

→ Customized Bearings

For a new robot joint project, send us your drawing and operating requirements for engineering evaluation.

→ Contact Beining Technology