Industrial robots require bearings that support accurate positioning, smooth motion, repeatable movement, and reliable operation throughout frequent acceleration and deceleration cycles. From robot joints and wrists to linear travel mechanisms and compact drive systems, bearing selection directly affects motion stability, positioning performance, and equipment reliability.
Recommended bearing solutions for industrial robots:
Extra-Low Noise Small Deep Groove Ball Bearings
These bearings are suitable for compact servo motors, robot end-effectors, sensing mechanisms, and auxiliary drive assemblies where low operating noise, smooth rotation, and reduced vibration are important. Appropriate internal clearance, lubrication, and dimensional accuracy help support stable operation in precision motion systems.
Guide Roller Bearings
Guide roller bearings are used in linear guidance mechanisms, robot transfer systems, positioning tracks, and automated handling equipment. They support controlled movement along guide surfaces and help manage the loads generated during repeated positioning and material transfer operations. Roller profile, mounting arrangement, and contact conditions should be matched to the guide design.
Full Ball / Roller Bearings
Full-complement bearing configurations can be considered for compact robot mechanisms requiring increased rolling-element capacity within the available design space. Depending on the bearing configuration, these designs may support relatively high loads where cage-free construction is appropriate. Maximum speed, lubrication, friction, and load conditions must be evaluated for each application.
Ultra Thin-Section Bearings
Ultra thin-section bearings are suitable for robot joints, wrist assemblies, compact rotary axes, and space-constrained positioning mechanisms. Their small cross-sectional dimensions allow designers to reduce the space occupied by the bearing while maintaining the required rotational support. Selection should consider combined loading, stiffness, mounting accuracy, and required rotational precision.
Ceramic Bearings
Ceramic or hybrid ceramic bearings can be considered for robot drive systems and precision rotating components requiring reduced rotating mass, high-speed capability, or electrical insulation. Silicon nitride rolling elements can help reduce centrifugal forces compared with steel rolling elements at comparable dimensions and speeds. Suitability depends on the required load capacity, shock resistance, lubrication, and operating conditions.
MTWB supports industrial robot manufacturers with customized bearing development based on joint geometry, shaft and housing dimensions, load conditions, speed requirements, and installation constraints.
