Precision cross roller bearings are often used in precision production equipment, such as in the joint and rotating parts of industrial robots and the rotating table of machining centers.

Choosing a suitable cross roller bearing can ensure the stability of equipment operation. Therefore, it is recommended to consider the following points when selecting the bearing:

1. Determine the rotation method and speed

Cross roller bearings have different structural types based on their characteristics, so it is necessary to confirm whether the motion type of the mechanism is inner ring rotation or outer ring rotation, as well as the rotation speed parameters.

Precision cross roller bearing structure reference (partial):

2. Confirm installation method

There are two conventional installation methods for cross roller bearings:

The inner and outer rings do not have installation holes, and are mainly installed and positioned through the matching of the bearing seat, compression flange, and shaft and bearing inner diameter, suitable for equipment with large installation space.

The inner and outer rings are equipped with installation holes, which are relatively simple to install and directly connected to the equipment through connecting bolts. They are practical for equipment with compact structure and small installation space.

In addition to the structural form without installation holes mentioned above, the structural form of installation holes is shown in the following figure:

3. Confirm the size range

Confirm the allowable size range of the mechanism and the required life cycle of the bearings, and select the appropriate bearing size specifications based on the above two points.

4. Confirm the required accuracy level of the bearing

When selecting accuracy, it is necessary to consider the rotation accuracy of the inner and outer rings, dimensional tolerances, and select appropriate accuracy levels based on the equipment working conditions.

5. Confirm rigidity

Confirm the required rigidity of the equipment to match the appropriate bearing clearance and the rigidity of the installation part.

6. Confirm the requirements for turning torque/overturning torque

The rotational torque refers to the amount of torque that a bearing can withstand during rotation, while the overturning torque refers to the amount of torque that a bearing can withstand. The requirement for determining the rotational torque can match the internal clearance of the bearing and the corresponding accuracy level. Determining the overturning torque that the bearing bears can clarify the structural type of the bearing.

7. Confirm the oil injection and lubrication method:

The provided cross roller bearings have all been filled with high-quality No. 2 lithium based grease and can be used directly upon arrival.

The recommended interval for supplementing lubricating grease is every 6-12 months. For high-frequency rotation situations, it is even more necessary to shorten the lubrication cycle.

In ultra-thin bearings, as there is no oil groove set, it is necessary to set corresponding oil grooves in the matching parts of the bearing to timely replenish lubricating grease.

If you have any other lubrication needs, please contact.

In summary, selection and management are equally important. Choosing appropriate cross roller bearings combined with effective lubrication management can ensure the stable operation of your equipment.