Bearings
Angular Contact Bearings
Angular Contact Bearings
Quick Code: BB-502202
7311 B Nachi Single Row Angular Contact Ball Bearing 55mm x 120mm x 29mm
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Product Specification
Arrangement
Standard version
Brand
Nachi
Cage
Sheet steel cage
Clearance
Normal radial clearance
Contact angle
40 degree
Inside Dia
55mm
Material
Standard bearing steel
Outer ring
Without flange/groove
Outside Dia
120mm
Row Type
Single
Seal
None, open bearing
Temperature range
-20 to +150 °C
Tolerance class
Tolerance class P0/PN2 / ABEC 1
Width
29mm
Reference
7311B
Additional Reference:
10067450
Quick Order Code
BB-502202
Product Description
7311 B Nachi Single Row Angular Contact Ball Bearing
This reliable Nachi single row angular contact ball bearing is designed for applications requiring combined radial and axial load capacity. With a 55mm bore and 120mm outer diameter, the 29mm width provides excellent performance for mid-range industrial equipment and machinery requiring precision operation.
Key Characteristics:
- Single row angular contact design with 40-degree contact angle for optimized load distribution
- Accommodates axial loads in one direction with consistent reliability
- Open bearing design (no seals) ideal for applications where lubrication management is controlled externally
- Sheet steel cage construction for durability and stability
- Standard arrangement suitable for general industrial applications
- Can be paired with another bearing to increase bidirectional axial load capacity
Specifications:
- Reference Number: 7311 B
- Manufacturer: Nachi
- Bore Diameter: 55mm
- Outer Diameter: 120mm
- Width: 29mm
- Contact Angle: 40°
- Cage Material: Sheet steel
- Seal Type: None (open bearing)
- Radial Clearance: Normal
- Tolerance Class: P0/PN2 (ABEC 1)
- Operating Temperature Range: -20°C to +150°C
- Material: Standard bearing steel
Applications:
Ideal for use in gearboxes, spindles, pumps, electric motors, and general industrial machinery where combined radial and axial loads are present. The open design makes it suitable for applications with controlled lubrication systems. Commonly paired for enhanced load capacity in heavy-duty equipment requiring bidirectional axial support.
