Crossed Roller Bearing Installation and Usage Instructions

Compared with ordinary bearings, crossed roller bearings have higher precision, so they should be handled with corresponding care during use; otherwise, the service life of the bearings will be affected.

I. Lubrication Instructions

Crossed roller series bearings are filled with high-quality grease before leaving the factory, and users can directly install and use them. The grease of the bearing needs to be replaced every 3 to 6 months. In the initial stage of bearing use, due to the resistance of the grease, the friction torque of the bearing will be relatively large; after the excess grease overflows, the torque will return to the normal value.

II. Usage and Disassembly Notes

1. The split inner ring or outer ring cannot be separated after being fixed with bolts and nuts, and can be directly installed into the bearing housing for use. At the same time, if the isolation block inside the bearing is incorrectly assembled, it will have a great impact on the rotation performance and the force on the rolling elements, so please do not disassemble the bearing casually.

2. The joint of the inner ring or outer ring may be slightly deviated sometimes. Before installing into the bearing housing, please loosen the bolts fixing the inner ring or outer ring, correct it with a plastic hammer, and then install it.

3. Do not apply external force to the connecting bolts during installation or disassembly.

4. Please pay attention to the dimensional tolerance of the installation components, so that the side pressure flange can firmly compress the inner ring or outer ring from the side.

III. Installation Procedures for Crossed Roller Bearings

1. Inspection of Components Before Installation

Clean the bearing housing and other installation components to remove dirt, and confirm whether the burrs of each component have been removed.

2. Insertion into the Bearing Housing or Shaft

Since it is a thin-section bearing, it is easy to tilt during insertion. Please use a plastic hammer or other tools to find the level while tapping evenly in the circumferential direction, and insert it little by little until it is confirmed that it is completely close to the contact surface by sound.

3. Installation of the Side Pressure Flange

(1) After placing the side pressure flange in place, shake it back and forth several times in the circumferential direction to adjust the position of the installation bolts.

(2) Install the pressure bolts. When screwing the bolts by hand, confirm that the bolts are not difficult to screw in due to the deviation of the bolt holes.

(3) The tightening of the pressure bolts can be divided into 3 to 4 stages from temporary tightening to formal tightening, and repeatedly tightened in the diagonal order. When tightening the pressure bolts of the split inner ring or outer ring, gently rotate the outer ring or inner ring of the bearing frequently during the tightening process, which can correct the split parts.

4. The bearing storage place should be clean and ventilated, free of corrosive gas, and the relative humidity should not exceed 65%.

IV. Anti-Rust and Storage

The product is coated with special anti-rust oil for crossed roller bearings during packaging. Under normal circumstances, the anti-rust effect can last for 2 years. After that, the bearings in stock should be re-cleaned, oiled and kept in intact packaging every year.