The Features of Crossed Roller Bearing
1. High rigidity Flexible rotation Accurate location
With the cross-roller bearing, cylindrical rollers are arranged with each roller perpendicular to the adjacent roller, in a 90° V groove, rollers, and grooves are linear contact, rings and rollers have small elastic deformation when the bearing achieves loads, thus, it has high rigidity. Separated from each other by a spacer or retainer to prevent rollers from skewing and the friction between rollers, improving flexible rotation and working speed.
2. Simple operation and Install
With the types of two-piece outer rings, inner rings type, integrated structure with roller putting holes type, which is very easy to operate and install.
3. Achieve loads in axial, radial, and tilting moment
With the structure of a 90° V groove, cylindrical rollers are arranged with each roller perpendicular to the adjacent roller, this design allows just one bearing to receive loads in all directions including radial, axial, and moment loads.
4. Save installation space
Since the Cross-roller Ring achieves high rigidity despite the minimum possible dimensions of the inner and outer rings, it is optimal for applications such as joints and swiveling units of industrial robots, swiveling tables of machining centers, rotary units of manipulators, precision rotary tables, medical equipment, measuring instruments and IC manufacture machines.
What is Crossed Roller Bearing?
Crossed cylindrical roller bearings are between the inner and outer ring: configuration of the corresponding rollers and composition. Compact structure, rolling surface for the line contact, so the shaft with force when the collar and rolling body elastic deformation is small while carrying radial, axial load and moment load and other combined load. These bearings are widely used in applications requiring high rigidity and high rotational accuracy and small bearing size requirements, such as industrial Mk robots, machine tools and medical equipment and other rotary positions.
The Installation of Crossed Roller Bearing
When installing the crossed roller bearing, equal pressure must be applied to the circumference of the end face of the ferrule to press the ferrule in. Do not directly hit the end face of the crossed roller bearing with a tool such as a hammer to avoid damage to the bearing. In the case of a small amount of interference, the end face of the bearing ring can be pressed with a sleeve at room temperature, and the sleeve can be hit with a hammer head to press the ring evenly through the sleeve. If installed in large quantities, hydraulic presses can be used. When pressing in, it should be ensured that the end face of the outer ring and the end face of the shoulder of the shell, and the end face of the inner ring and the end face of the shaft shoulder are pressed tightly, and no gap is allowed. When the amount of interference is large, it can be installed by oil bath heating or inductor heating bearing method. The heating temperature range is 80℃-100℃, and cannot exceed 120℃. At the same time, tighten the bearing with nuts or other appropriate methods to prevent the bearing from shrinking in the width direction after cooling and causing a gap between the ring and the shaft shoulder.
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