RB Series High Precision P5 P4 Slewing Ring Bearing Chrome Steel GCr15 For Robot Arm

The RB Series Crossed Roller Bearings are high-precision bearings specifically designed for industrial robots, robotic arms, and automation equipment requiring high rigidity, compact structure, and accurate rotation.

Models including RB2008, RB3010, RB5013, RB11015, RB15025, RB20030, and RB25040 feature a crossed roller structure in which cylindrical rollers are arranged alternately at 90° between the inner and outer rings. This design enables the bearing to handle radial loads, axial loads, and moment loads simultaneously.

RB series bearings are widely used in robot joints, rotary tables, harmonic reducers, and precision positioning systems.

• Crossed roller structure for multi-directional load capacity

• High rigidity and compact design

• Superior rotational accuracy

• Smooth motion with minimal friction

• Capable of handling radial, axial, and moment loads simultaneously

• Ideal for robotic arm joints and precision automation

(Custom sizes and preload classes available upon request.)

• Product Type: Crossed Roller Bearing

• Series: RB Series

• Structure: Cylindrical rollers crossed at 90°

• Material: High-grade bearing steel

• Precision Grade: P5 / P4 (optional)

• Preload: Light / Medium / Heavy preload available

• Sealing: Open or sealed type optional

• Application: Robot arms, rotary tables, reducers

RB Series crossed roller bearings are widely used in:

• Industrial robot arm joints

• Collaborative robots (cobots)

• Harmonic and RV reducers

• CNC rotary tables

• Semiconductor equipment

• Precision automation systems

At GQZ Bearing, we supply precision crossed roller bearings tailored for robotics and automation projects:

• Strict dimensional accuracy control

• Stable preload adjustment capability

• Consistent production batch quality

• OEM and custom marking support

• Export experience in robot bearing supply

• Anti-corrosion industrial packaging

• Vacuum packing available

• OEM branded packaging supported

• Flexible MOQ for project orders

• Global air and sea shipping options

RB series bearings can support radial, axial, and moment loads simultaneously due to their 90° crossed roller design. This makes them ideal for robot joints that require high rigidity and precise positioning.

Yes. We offer different preload levels and precision grades (P5/P4) based on your robot design and torque requirements.

Standard lead time is approximately 20–35 days depending on size and quantity. Custom specifications may require additional production time.