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Need precise, stable rotary support? A crossed roller slewing ring bearing is the answer — two rows of cylindrical rollers crossed at 90° let a single bearing carry axial, radial and tilting-moment loads at once, delivering high rigidity and high rotation accuracy.
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plywood pallet/caseCrossed roller slewing ring bearing
A crossed roller slewing ring bearing (also called crossed roller bearing or crossed cylindrical roller slewing ring) arranges two rows of cylindrical rollers at a 90° angle in a single raceway. Compared with four-point-contact ball or single-row roller slewing bearings, one unit can carry axial load, radial load and tilting moment at the same time, delivering compact structure, high rigidity, high rotation accuracy and easy mounting — widely used in machinery that requires precise rotary positioning.
Features & performance advantages
High load capacity: two rows of rollers share the load; axial, radial and tilting-moment loads are handled by one bearing.
High rotation accuracy: available in P5 / P4 / P2 precision grades for precise positioning.
Compact design: one bearing replaces multi-bearing assemblies, saving axial space and machine weight.
Easy mounting: direct bolt connection to mating structures simplifies design.
Specification
| Material | 50Mn/42CrMo/other steel | Lubrication | grease |
| Diameter range | 280mm-6000mm | Package | plywood pallet/case |
| Gear type | external gear/internal gear/no gear | Shipping way | sea/air/railway |
| Hardness | HRC53-60 | Port | Shanghai/Guangzhou/named port |
| Precision grade | standard/high precision | Product orginion | China |
Our showcase
Why Choose Us
High load capacity, wear resistance & long service life
Strict dimensional tolerance, smooth rotation
Customization drawings / OEM / ODM available
Direct factory price, stable delivery
Complete inspection & test report before shipment
Suitable for heavy-duty engineering & harsh working environment
After Sales Service
Tailored product according to your drawings or samples
Professional technical support anytime
Strict quality inspection & full set of shipping documents
Fast delivery & safe packaging (plywood pallet/case)
One-year quality warranty
FAQ
1. How is it different from ordinary slewing bearings (e.g., four-point-contact ball type)?
Rollers contact the raceways in lines, giving higher rigidity, higher load capacity and higher rotation accuracy; the cross-section is more compact at the same capacity — ideal for high-precision, high-rigidity rotary applications.
2. How to arange mounting and maintenance?
Our suggestion is to clean mounting faces and bolt holes, remove burrs and anti-rust residue before assembly; after positioning, tighten mounting bolts diagonally in 2–3 passes to the specified torque; after mounting, check rotation freedom and face / radial runout against requirements; grease as specified and monitor temperature rise during break-in; periodically check bolt tightening and re-grease.
For technical consultation or custom quotations, please provide gear parameters (module, number of teeth, face width, accuracy requirements, operating conditions, etc.). Our engineering team will deliver a professional solution tailored to your specific needs.
Need precise, stable rotary support? A crossed roller slewing ring bearing is the answer — two rows of cylindrical rollers crossed at 90° let a single bearing carry axial, radial and tilting-moment loads at once, delivering high rigidity and high rotation accuracy.
Compared with traditional four-point contact ball slewing bearings, crossed roller slewing rings adopt line contact load carrying mode, featuring higher rigidity, better rotation accuracy, and stronger tilting moment resistance. They are widely used in precision equipment fields requiring high positioning accuracy and operational stability.
Crossed roller slewing bearings as an indipensable core component in modern high-end equipment, are often referred to as the "joint of a machine". Its structural design provides solid support for the autonomous development and performance breakthrough of high-end manufacturing.
This precision slewing bearing is engineered purposedly for high-accuracy CNC machine rotary tables. Featuring an internal gear with ground teeth, it ensures smooth transmission and precise positioning.
Crossed roller slewing bearing can be developed for high-precision heavy-duty applications by client's requirement.
Crossed roller bearings of 11 series are high-precision heavy-duty slewing bearings specially designed for hydraulic excavators.
Crossed roller slewing ring often uses a split inner or outer ring for easy installation and preload adjustment. The rollers provide line contact with the raceways, offering much higher rigidity than ball bearings. It features high precision, space-saving, low friction. Therefore, it is essential for industrial robot joints, precision machine tool tables, radar antennas, and medial equipment (e.g., CT scanners).
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