The key technology of industrial robot bearing

Industrial robot bearing as one of the key parts of the industrial robot, mainly includes two categories: bearing, used for industrial robot is a constant cross-section thin-walled bearing, another kind is cross roller bearing.There are harmonic reducer bearing, linear bearings, joint bearings, etc., but before two kinds of bearing with the more.
The development of modern industrial robots tend to be lightweight, bearing to be installed in limited space, must be small volume, light weight, which is lightweight.
But at the same time, the robot's high load, high rotary precision, high stability, high positioning speed operation, high repeat positioning accuracy, long life, high reliability performance, requirements of form a complete set of bearing robot must possess high bearing capacity, high precision, high stiffness, low friction torque, long life, high reliability performance.

1． Prismatic thin-walled bearings

Thin-walled cross section such as bearing different with the ordinary thin wall bearing, such as cross section thin-walled bearing most of a series of cross section is square, and the size is designed as a fixed value.In the same series of cross section size is the same, it is not with the inner diameter size increases, so called cross section thin-walled bearing, etc.
Such as cross section thin-walled ball bearings including thin-walled four-point contact ball bearing series, thin-walled angular contact ball bearing series and thin-walled deep groove ball bearing series three series, more than was applied in the industrial robot waist, elbow and wrist requirements section size is small, restricted areas.Under the condition of the same diameter and thin wall section such as ball bearing is more than the number of standards of steel ball rolling bearing, so as to improve the bearing internal force distribution, reduce the elastic deformation of the steel ball in contact with the channel, improve the bearing capacity.
2. Thin-walled cross roller bearings
Thin-walled cross roller bearing internal structure of the roller are arranged 90 ° vertically cross each other, with a single bearing can bear radial force at the same time, the bidirectional interaction of axial force and overturning moment, with intervals between roller holder or the isolation piece, can prevent the each other between the tilt or roller of roller mill, effectively prevent the increase of the friction torque.
Moreover, the structure of vertical roller cross arrangement can avoid roller lock phenomenon;
Because of bearing the structure of the inside and outside the circle is divided again at the same time, clearance is adjustable, even by pressure, also can obtain high rotation accuracy.
Cross roller bearings with its light composite structure, high rotary precision, good rigidity, good properties such as stable friction moment are widely applied to industrial robot waist turning, joint type robot turning part of the shoulder, arm and wrist.
Supplier
BMB Bearings ia a precision bearing enterprise specializing in the production of double row angular contact ball bearings, double row deep groove ball bearings, and single row angular contact ball bearings. The company is a end bearings manufacturer enterprise producing double row angular contact ball bearings in China. Its models cover 3200 series, 3300 series, 3000 series, 3800 series, 3900 series, etc. The product accuracy grades are: P0, P6, P5, P4, and the products are widely applicable.
The company also maintains an extensive inventory of superior roller bearings, ball bearings, Deep Groove Ball Bearings, Selfaligning ball bearing, Angular Contact Ball Bearings, Thrust Ball Bearings and much more.