RU Series Crossed Roller Bearings
RU series crossed roller bearing series（Integrated Inner/Outer Ring Type） Since the mounting holes are provided, the model does not require a presser flange or housing. In addition, because it has an integrated inner/outer ring structure and is equipped with washers, its performance is minimally affected by the mounting procedure, ensuring stable rotation accuracy and torque.
RU Series Crossed Roller Ring Features
1. Integrated inner ring and outer ring provide high stiffness.
2. Sustain radial, axial, and moment loads simultaneously.
3. High rigidity & rotation accuracy. Its compact structure can also reduce the influence of the installation.
4. Miniaturization. Inner ring and outer ring with mounting holes, so it can be easily mounted to a device with bolts without need for housing and fixing plate, so surrounding parts of the bearing can be made compact, contributing to miniaturization and a weight saving of devices.
Model number naming method:
E. g: RU178 UU CC0 P2 BG X -N
RU178: bearing model;
UU: both sides with a seal; U: 1 side with a seal;
CC0: negative clearance(preload); C0: positive clearance; C1: great than C0 positive clearance;
P2: precision grade, P0 if without stated;
The symbol for accuracy required position:
B: both the inner ring and outer ring required rotating accuracy;
R: outer ring required rotating accuracy;
No symbol: inner ring required rotating accuracy;
The symbol for the assembly direction of the mounting hole:
G: counter boreholes of the inner and outer rings face positive directions;
No symbol: counter boreholes of the inner and outer rings face the direction.
The symbol for the inner ring hole:
X: through holes on the inner ring;
No symbol: counter holes on the inner ring
-N: with grease nipple;
No symbol: no accessory.
Applications of RU Series Crossed Roller Bearings
Joint units of robots, precision rotary tables, hollow, rotating platforms, radar, precision measuring instruments, etc.