Crossed Roller Bearing

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, and rings and rollers have small elastic deformation when the bearing achieves loads, thus, this crossed roller bearing 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 Installation

THB cross roller ring bearing is with two types of two-piece outer rings, inner rings, and 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 cross roller bearing 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 with the minimum possible dimensions of the inner and outer rings, the cross roller slewing bearing is the optimal option for the 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 roller bearings, including crossed cylindrical roller bearings and crossed tapered 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, 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. As one of the most professional cross roller bearing manufacturers in China, THB-bearings has its own cross roller bearing factory. We can offer you customizable crossed cylindrical roller bearings and crossed tapered roller bearings which can meet your different requirements.

The Installation of Crossed Roller Bearing

As a professional China crossed roller bearing stockist, THB-Bearings knows a lot about the installation precautions of cross roller bearings. 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 cross roller ring 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 hammerhead to press the ring evenly through the sleeve. If the cross roller slewing bearing is 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, 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 cross roller ring bearing from shrinking in the width direction after cooling and causing a gap between the ring and the shaft shoulder. That's the installation precautions of cross roller ring bearing.  If you have any more questions about cross roller slewing bearing, please feel free to contact us.  THB-Bearing, a professional China cross roller bearing factory and supplier, is willing to help you solve the problems of cross roller bearing applications.

FAQs of Crossed Roller Bearing

1. How to Troubleshoot Common Issues with Cross Roller Bearings?

Common issues like noise, overheating, or premature wear often result from misalignment, improper lubrication, or contamination. Ensure precise installation using alignment tools, select high-temperature grease, and regularly inspect seals. For persistent problems, refer to THB’s installation guide or contact our technical support.

2. How to prevent premature wear and extend bearing life？

Use high-quality lubricants (replenish every 2,000 hours), avoid misalignment during installation, and protect bearings from dust/debris with seals (IP54 standard in THB models). For heavy-use applications, consider integrating vibration sensors to monitor performance.

2. How are cross roller bearings used in industrial robots?

Cross roller bearings excel in robot joints, rotary tables, and vision systems due to their compact design and ability to handle multi-directional loads. Their high rigidity and ±0.5 arc-min precision make them ideal for 6-axis arms, Delta robots, and semiconductor equipment, often replacing bulky traditional bearing sets.

3. What are the types of industrial robot bearings?

Industrial robots primarily use cross roller bearings (high stiffness, multi-axis loads), thin-section bearings (lightweight SCARA arms), and harmonic drive bearings (ultra-precise reducers). As a leading robotic bearing supplier, THB’s XRB series is specifically engineered for robotic joints, delivering superior durability under high moment loads and repeated motion cycles.