RU228G crossed roller bearing detail specifications:

RU228(G) crossed roller bearing features:

1. Integrated inner ring and outer ring, provide high stiffness
2. Sustain radial, axial and moment loads at the same time
3. High rigidity & rotation accuracy, compact structure reduce the influence by 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, which contributes to miniaturization and weight saving of devices.

Check more RU series crossed roller bearings.

FAQ

1. What is the hardness of RU228(G) bearings?
The hardness of standard type RU228G cross roller ring is HRC 58~63.

2. How to lubricate RU228G cross roller bearings?
Unless otherwise stated, all BRS made RU series crossed roller bearings are filled with proper amount of complex lithium grease before delivery. So users can directly put bearings into application after receiving goods. Then after 1~6 months operation, bearings should be added with proper grease based on working conditions.

RU228G crossed roller bearing installation instructions

RU228(G) Bearing Mounting Holes

Shoulder height

ds: 208mm

Dh: 246mm

PCD1 : 184mm

PCD2: 270mm

Inner ring mounting hole 12-φ11 drilled through, φ17.5 counter bore depth 10.8

Outer ring mounting hole 12-φ11 drilled through, φ17.5 counter bore depth 10.8

Suffix G :The counter-bore holes of the inner and outer rings face opposite direction

Cautions: For crossed roller bearings with split outer ring, when the rigidity of the mounting parts is not sufficient, stress concentration will occur at the contact area between the rollers and raceways, and the bearing performance will be deteriorated significantly.

Therefore, it is necessary to carefully examine the rigidity of housing and the strength of fixing bolts when a large moment will be applied.

1.Before installation, please clean bearing bracket, shaft, or other components, make sure there is no burrs or rough edge.
2.Fix the inner and outer rings in the axial direction directly to the mounting surface by fixing bolts
3. If large number of radial load and/or moment is applied, it is recommended to prepare flange part as Fig.4.