High precision Cross Roller Ring --CRU Series

FRB Bearings CRU Cross Roller Ring's unique configuration results in an overall costs savings of  up to 50%. Featuring mounting holes on both rings, the Type CRU requires reduced parts and labor.

The simple design of the Type CRU consists of one-piece outer and inner ring construction, and  requires no precise housing preparation or special fixturing. The FRB Bearings engineered design  allows for easy installation with either inside or outside ring. The Type CRU's extremely rigid  construction ensures highly accurate and ultra-smooth motion.

Here are some recommended product models:
RU 42,
RU 66,
RU 85,
RU 124,
RU 124G,
RU 124X,
RU 148,
RU 148G,
RU 148X,
RU 178,
RU 178G,
RU 178X,
RU 228,
RU 228G,

3 Reasons-Why crossed roller bearing is the most suitable for robot arm?

The stretching and lateral movement of the robot arm all belong to linear motion. There are many kinds of mechanism to realize the reciprocating and linear motion of arm, such as piston oil (gas) cylinder, gear rack mechanism, screw nut mechanism and connecting rod mechanism. Because the piston oil (gas) cylinder is small in size and light in weight, it is widely used in the robot arm structure.

There are many kinds of mechanisms to realize the rotary motion of robot arm, such as vane rotary cylinder, gear drive mechanism, sprocket drive mechanism, piston cylinder and connecting rod mechanism. The most suitable bearing for robot arm is cross roller bearing. Why do you say that?