Our XRA series ultra-thin crossed roller bearings are designed to achieve high-precision and high-rigidity rotation in confined spaces. They are not just thin, but also a breakthrough in performance.
With today's growing demand for precision and compact design, traditional bearing solutions are often bulky and difficult to meet lightweight requirements. If you are looking for an ultra-thin bearing that can withstand high loads and achieve ultra-high precision for robotic joints, collaborative robots, medical CT machines, or high-end automation equipment, then the XRA series crossed roller bearings are your ideal choice.
| Ultra thin XRA series crossed roller bearings | ||||||||||
| Nominal type | External dimension | Basic rated load | Weight | Corresponding type | ||||||
| （kN） | ||||||||||
| Internal diameter | Outside diameter | Width | Pitch Circle diameter of roller | Shoulder dimension | Radial direction | |||||
| d | D | B | Dpw | ds | Dh | C | Co | Kg | THK | |
| XRA 5008 | 50 | 66 | 8 | 57 | 53.5 | 60.5 | 5.1 | 7.19 | 0.08 | RA5008 |
| XRA 6008 | 60 | 76 | 8 | 67 | 63.5 | 70.5 | 5.68 | 8.68 | 0.09 | RA6008 |
| XRA 7008 | 70 | 86 | 8 | 77 | 73.5 | 80.5 | 5.98 | 9.8 | 0.1 | RA7008 |
| XRA 8008 | 80 | 96 | 8 | 87 | 83.5 | 90.5 | 6.37 | 11.3 | 0.11 | RA8008 |
| XRA 9008 | 90 | 106 | 8 | 97 | 93.5 | 100.5 | 6.67 | 12.4 | 0.12 | RA9008 |
| XRA 10008 | 100 | 116 | 8 | 107 | 103.5 | 110.5 | 7.15 | 13.9 | 0.15 | RA10008 |
| XRA 11008 | 110 | 126 | 8 | 117 | 113.5 | 120.5 | 7.45 | 15 | 0.16 | RA11008 |
| XRA 12008 | 120 | 136 | 8 | 127 | 123.5 | 130.5 | 7.84 | 16.5 | 0.17 | RA12008 |
| XRA 13008 | 130 | 146 | 8 | 137 | 133.5 | 140.5 | 7.94 | 17.6 | 0.18 | RA13008 |
| XRA 14008 | 140 | 156 | 8 | 147 | 143.5 | 150.5 | 8.33 | 19.1 | 0.19 | RA14008 |
| XRA 15008 | 150 | 166 | 8 | 157 | 153.5 | 160.5 | 8.82 | 20.6 | 0.2 | RA15008 |
| XRA 16013 | 160 | 186 | 13 | 172 | 165 | 179 | 23.3 | 44.9 | 0.59 | RA16013 |
| XRA 17013 | 170 | 196 | 13 | 182 | 175 | 189 | 23.5 | 46.5 | 0.64 | RA17013 |
| XRA 18013 | 180 | 206 | 13 | 192 | 185 | 199 | 24.5 | 49.8 | 0.68 | RA18013 |
| XRA 19013 | 190 | 216 | 13 | 202 | 195 | 209 | 24.9 | 51.5 | 0.69 | RA19013 |
| XRA 20013 | 200 | 226 | 13 | 212 | 205 | 219 | 25.8 | 54.7 | 0.71 | RA20013 |
Our XRA series ultra-thin crossed roller bearings are designed to achieve high-precision and high-rigidity rotation within confined spaces. They're not just thin; they offer breakthrough performance.
Ultra-thin and lightweight design, breaking through space limitations: Thanks to their innovative thin-wall structure, the XRA series is significantly thinner and lighter than traditional bearings. This allows for easy integration into space-constrained applications such as robotic arms and medical imaging equipment, significantly reducing overall equipment weight and enabling more compact and flexible designs.
High rigidity and ultra-high rotational accuracy: Our crossed roller bearings utilize a unique cross-roller arrangement to simultaneously support radial, axial, and tilting moments within a single bearing. This design significantly improves bearing rigidity, enabling rotational accuracy up to P4/P2 (ISO standards), making them ideal for precision machinery requiring the highest possible motion accuracy.
High load capacity and stable and reliable performance: Despite their ultra-thin construction, the XRA series bearings maintain a strong load capacity. Their roller-raceway linear contact design effectively distributes stress, ensuring stable and reliable operation under high loads and high-speed rotation. Low friction torque improves equipment energy efficiency: Thanks to a specially optimized internal structure and precision machining, our XRA series bearings feature extremely low friction torque, which not only improves equipment efficiency but also effectively reduces heat generation, extending the life of the bearing and equipment.
Due to their outstanding performance, the XRA series ultra-thin crossed roller bearings are widely used in the following fields:
Robotics and Automation: Collaborative robots, industrial robot joints, speed reducers, automated production lines, etc., achieving high-precision and high-speed motion control.
Medical Equipment: CT machines, MRI machines, endoscope manipulators, etc., meeting the stringent requirements of medical equipment for high precision and compact design.
Precision Instruments: Measuring equipment, optical instruments, aerospace equipment, etc., providing stable and reliable rotational support for critical components.
