BTN Series

7409B-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 :7409B
Principal Dimensions(mm)
d :45
D :120
B :29
Basic Load Ratlngs(kN)
Cr :80.7
Cor :44.1
Limited Speed(rpm)
Grease :4500
Oil :6000