7304 Angular Contact Ball Bearings
| 7304 Angular Contact Ball Bearings | |||
|---|---|---|---|
| Part Number | 7304 | Weight(Kg) | 0.140 |
| d | 20 | Dynamic Load Co(N) | 18600 |
| D1 | 52 | Static Load Cor(N) | 10200 |
| B | 15 | Grease Speed | 17000 |
| R | 1 | Oil Speed | 22000 |
7304 Angular Contact Ball Bearing | 7304C / 7304AC / 7304B
The 7304 angular contact ball bearing is a single-row heavy-duty precision rolling bearing engineered for combined radial and axial loads. It features low friction, low noise and stable high-speed performance, widely used in medium and heavy-duty industrial transmission and precision machinery. Offered in 7304C, 7304AC, 7304B contact angle variants and bearing steel/stainless steel materials, this bearing delivers steady performance in standard, humid and mildly corrosive working environments.
Difference Between 7304C, 7304AC and 7304B
7304C (15° Contact Angle): Built with a 15° contact angle, providing ultra-low friction and excellent high-speed stability. It maintains high rotational precision with moderate axial load capacity, ideal for high-speed spindles and high-precision automated equipment.
7304AC (25° Contact Angle): Adopts a 25° contact angle with balanced radial and axial load resistance. Boasting stable composite load performance and strong versatility, it is the universal cost-effective option for most standard precision machinery applications.
7304B (40° Contact Angle): Equipped with a 40° large contact angle for superior axial load capacity. It reliably withstands heavy axial thrust at low to medium speeds, perfectly suited for equipment with offset loads and heavy axial force.
Material Differences: Bearing Steel vs Stainless Steel
Bearing Steel (GCr15): GCr15 bearing steel serves as the standard material for 7304 series bearings. Professional heat treatment ensures high hardness, excellent wear resistance and strong anti-fatigue performance, guaranteeing stable precision and long service life in conventional dry industrial conditions.
Stainless Steel: Stainless steel 7304 bearings possess outstanding rust-proof, anti-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 demands. Provides high precision, smooth rotation and quiet operation. Dual material grades balance cost performance and anti-corrosion ability. Standard structural design enables easy installation and replacement.
Application Scenarios
7304 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 fit conventional indoor industrial equipment; stainless steel versions adapt to damp, sanitary and lightly corrosive environments. 7304C is optimized for high-speed precision operation, 7304AC for general universal use, and 7304B for heavy axial load mechanical equipment.
