BTN Series

7321B-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 :7321B
Principal Dimensions(mm)
d :105
D :225
B :49
Basic Load Ratlngs(kN)
Cr :201.7
Cor :193.3
Limited Speed(rpm)
Grease :2400
Oil :3600