7308 Angular Contact Ball Bearings
| 7308 Angular Contact Ball Bearings | |||
|---|---|---|---|
| Part Number | 7308 | Weight(Kg) | 0.630 |
| d | 40 | Dynamic Load Co(N) | 48200 |
| D1 | 90 | Static Load Cor(N) | 31200 |
| B | 23 | Grease Speed | 9000 |
| R | 1.5 | Oil Speed | 12000 |
7308 Angular Contact Ball Bearing | 7308C / 7308AC / 7308B
The 7308 angular contact ball bearing is a heavy-duty single-row precision rolling bearing capable of handling combined radial and axial loads. It features low friction, low noise and stable high-speed operation, widely used for medium and heavy-load precision transmission and industrial machinery. Available in 7308C, 7308AC and 7308B contact angle types with bearing steel and stainless steel options, this bearing ensures stable operation in standard, humid and mildly corrosive working environments.
Difference Between 7308C, 7308AC and 7308B
7308C (15° Contact Angle): Comes with a 15° contact angle with ultra-low friction loss and outstanding high-speed performance. It retains high rotational precision with moderate axial load capacity, ideal for high-speed spindles and precision automated equipment.
7308AC (25° Contact Angle): Adopts a 25° contact angle with balanced radial and axial load resistance. Featuring stable composite load performance and strong versatility, it is the universal cost-effective choice for most precision machinery applications.
7308B (40° Contact Angle): Equipped with a 40° large contact angle for enhanced axial load capacity. It stably withstands heavy axial thrust at low and medium speeds, perfect for equipment with offset loads and heavy axial force.
Material Differences: Bearing Steel vs Stainless Steel
Bearing Steel (GCr15): GCr15 bearing steel is the standard material for 7308 series bearings. Professional heat treatment delivers high hardness, excellent wear resistance and strong fatigue resistance, maintaining stable precision and long service life in conventional dry industrial conditions.
Stainless Steel: Stainless steel 7308 bearings provide superior rust-proof, oxidation and weak corrosion resistance. They effectively resist moisture and minor contamination to avoid precision loss and corrosion damage, suitable for food machinery, medical equipment and high-humidity sanitary scenarios.
Product Features
Supports multi-directional combined radial and axial loads. Three contact angle specifications cover high-speed, universal and heavy axial load working conditions. Offers high precision, smooth rotation and quiet operation. Dual material grades balance cost performance and anti-corrosion ability. Standard structure enables easy installation and replacement.
Application Scenarios
7308 series angular contact ball bearings are widely applied in precision motors, machine tool spindles, industrial pumps, compressors and heavy-duty automation machinery. Bearing steel models suit conventional indoor industrial equipment; stainless steel versions adapt to damp, sanitary and lightly corrosive environments. 7308C for high-speed precision operation, 7308AC for general universal use, and 7308B for heavy axial load equipment.
