XR/JR Series (Crossed Roller)
Structure: Crossed Roller / Compact Profile
Material: Bearing Steel (Gcr15) / SUJ2
Precision: P5, P4
Rigidity: Medium-High
Mounting Type: Through-bolt Mounting Holes
Bore Range: 30mm – 200mm
Application: Robotic rotary joints, antenna positioners, medical equipment rotary arms
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The XR/JR Series crossed roller bearings offer a compact profile design for space-constrained rotary applications requiring multi-directional load support. The optimized roller geometry ensures smooth operation across the full speed range. Widely deployed in robotic rotary joints, antenna positioning systems, and medical equipment articulating arms.
Technical Specifications
| Bearing No. | Bore (d) mm | Outer Dia. (D) mm | Width (B) mm | Dyn. Load Cr (kN) | Stat. Load Cor (kN) | Max Speed (rpm) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| XR496051 | 280 | 380 | 45 | 145 | 355 | 150 | 16.0 |
| XR637077 | 380 | 530 | 50 | 195 | 480 | 120 | 25.0 |
| XR678052 | 430 | 570 | 55 | 245 | 610 | 100 | 35.0 |
| XR766051 | 480 | 630 | 60 | 275 | 720 | 90 | 45.0 |
| XR855053 | 530 | 710 | 65 | 340 | 900 | 70 | 55.0 |
| JR45x60x16 | 45 | 60 | 16 | 7.8 | 10.5 | 800 | 0.12 |
| JR50x65x20 | 50 | 65 | 20 | 9.5 | 13.0 | 700 | 0.16 |
| JR60x78x22 | 60 | 78 | 22 | 12.0 | 17.5 | 600 | 0.25 |
| JR70x90x25 | 70 | 90 | 25 | 15.5 | 23.0 | 500 | 0.38 |
