BTN Series

7310B-BTN Series

The BTN Series represents a high-performance line of Angular Contact Ball Bearings, engineered for superior rigidity and precision in demanding applications. Characterized by a 40-degree contact angle, this series offers exceptional single-direction axial load capacity. Its non-separable design ensures robust and simplified installation. BTN bearings are ideally suited for machine tool spindles, high-power gearboxes, and industrial pumps where heavy thrust loads and high operational stability are paramount. This design provides reliable performance under the most challenging conditions.



  • BTN Series
  • BTN Series
  • BTN Series
  • BTN Series
  • BTN Series

Dimension and Parameters

Designation :7310B
Principal Dimensions(mm)
d :50
D :110
B :27
Basic Load Ratlngs(kN)
Cr :68.1
Cor :48
Limited Speed(rpm)
Grease :5000
Oil :6700