Two types of bearings commonly used in industrial robots
- 2022/8/30 14:34:46
Bearings are one of the key components of industrial robots. Robot bearings have high rigidity and rotational accuracy, as well as composite bearing capacity, while the dimensions of the robot bearings are miniaturized.
Today I would like to introduce to you two types of bearings： equal-section thin-walled crossed roller bearings and equal-section thin-walled ball bearings, which are most suitable for joints and rotating parts of industrial robots, direct drive motors, medical machines, measuring instruments and other fields.
1.Equal Section Thin Wall Crossed Roller Bearings
HRAU series, the cylindrical rollers of the bearing are arranged in a criss-cross pattern on the V-shaped raceway, and the rollers are separated by spacers. The structure of the criss-cross arrangement of rollers enables a single bearing to bear various loads such as axial load, radial load and overturning moment. In addition, since the inner and outer rings are of integral structure, it can be used for the rotation of the inner ring as well as the rotation of the outer ring.
2.Equal Section Thin Wall Ball Bearings
Deep groove ball bearings: C-type deep groove ball bearings are single-row deep groove ball bearings with extra-deep grooves in the inner and outer rings.
Angular contact ball bearings: The difference between A-type angular contact ball bearings and C-type bearings is that A-type bearings have sufficient radial clearance and can form a sufficient contact angle to bear axial loads. Due to its unidirectional load capability, the bearing needs to be mounted symmetrically with other bearings to set and maintain the contact angle while minimizing axial movement when subjected to alternating axial loads.
Four-point contact ball bearing: The difference between the X-type four-point angular contact ball bearing and the A and C-type bearings is the shape of its ball groove. The deep groove depth and four-point contact structure allow the bearing to withstand radial, axial and torque loads, similar to a pair of Type A bearings paired back-to-back.
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