Ultra Thin XRA-C Crossed Roller Bearings

Ultra Thin XRA-C Crossed Roller Bearings

Precision and Lightweight Design for High-Performance Applications

The ultra thin XRA-C crossed roller bearings are engineered for precision mechanical design requiring a balance of lightness and high performance. These bearings are optimal for space-constrained and weight-sensitive applications such as industrial robots, precision instruments, and CNC machine tools. Characterized by their ultra-thin and light design, high rigidity, and multi-directional load support, these bearings simplify structures and reduce installation space significantly.

Internal Diameter
20mm - 200mm
Outside Diameter
31mm - 226mm
Basic Dynamic Load Rating
kN (varies by model)
Precision Grade
P5, P4, P2

Available Models & Specifications

Click on any part number to view detailed CAD drawings and download PDF specifications.

Part NumberBore (d)Outer (D)Width (B)
XRA10008C 100 mm116 mm8 mm
XRA11008C 110 mm126 mm8 mm
XRA12008C 120 mm136 mm8 mm
XRA13008C 130 mm146 mm8 mm
XRA14008C 140 mm156 mm8 mm

Why Choose Ultra Thin XRA-C Crossed Roller Bearings for Precision Applications?

The Ultra Thin XRA-C series crossed roller bearings are distinguished by their cross-shaped cylindrical rollers arranged perpendicularly at 90° angles, which allows a single bearing to withstand radial, axial, and overturning moments from all directions. This design not only simplifies the structure but also significantly reduces the installation space required. These bearings are available in a range of sizes and specifications, making them suitable for a variety of high-precision applications.

These bearings are particularly beneficial in industries such as robotics, where precise motion is critical, and in medical equipment, where they ensure clear and accurate scans. In semiconductor manufacturing, they provide ultra-high-precision positioning and rotation, while in aerospace, their lightweight and high-precision characteristics are essential.

The selection of the appropriate ultra-thin crossed roller bearing depends on factors such as load type and magnitude, precision requirement, operating environment, and installation space. Our XRA-C series bearings offer a range of precision grades, from P5 to P2, ensuring stability and reliability under high speeds and high loads.

  • High Rigidity and Multi-directional Load Support
  • Ultra-High Precision Grades for High-Speed Operations
  • Customizable Sizes and Specifications to Fit Specific Needs

Technical Specifications and Advantages

STEP 1

Extremely Low Profile and Lightweight Design

The ultra-thin XRA-C series crossed roller bearings are designed for applications requiring compact layouts and reduced overall weight, making them ideal for robotic joints, precision rotary tables, medical devices, and aerospace equipment.

STEP 2

High Rigidity and Precision

The crossed roller arrangement provides several times more rigidity than conventional bearings, with high-density contact ensuring rotational accuracy and repeatability. Available in precision grades of P5, P4, and P2 for high-speed and high-load applications.

STEP 3

Multi-Directional Load Support

The unique crossed roller structure allows these bearings to support complex, combined loads, eliminating the need for separate radial and axial load support bearings and simplifying the design.

STEP 4

High-Speed Performance and Low Friction

Despite their compact size, these bearings offer excellent high-speed performance with optimized raceway geometry and precision manufacturing processes that reduce frictional torque, extend service life, and minimize heat generation.

FAQs about Ultra Thin XRA-C Crossed Roller Bearings

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