Bearings
Angular Contact Bearings
Angular Contact Bearings
Quick Code: BB-507979
7311 BG NSK Single Row Angular Contact Ball Bearing 55mm x 120mm x 29mm
The 7311 BG NSK Single Row Angular Contact Ball Bearing is a precision bearing engineered to handle simultaneous radial and axial loads in one direction. This single row angular contact bearing from NSK combines robust construction with reliable performance, making it an excellent choice for demanding industrial applications requiring high-speed operation and precise load management.
Key Features:
- 40° contact angle for optimal load distribution and combined load capacity
- Single row configuration with low axial clearance suitable for O- and X-arrangement bearing pairs
- Steel cage construction for enhanced durability and reliability
- Open bearing design (no seals) for minimal friction and high-speed capability
- Standard bearing steel construction with P0/PN2 (ABEC 1) tolerance class for precision performance
Specifications:
- Bore Diameter: 55mm
- Outside Diameter: 120mm
- Width: 29mm
- Row Type: Single Row
- Contact Angle: 40°
- Manufacturer: NSK
- Cage Type: Steel
- Clearance: Normal radial clearance
- Seal Type: Open (None)
- Material: Standard bearing steel
- Tolerance Class: P0/PN2 (ABEC 1)
- Operating Temperature Range: -20°C to +150°C
- Arrangement: Bearing pair with low axial clearance in O- and X-arrangements
- Reference Number: 7311BG
Typical Applications:
This versatile angular contact bearing is ideal for high-speed, precision applications including spindle bearings, gearboxes, machine tool bearings, compressors, and other equipment requiring simultaneous radial and axial load capacity. The 55mm bore size makes it well-suited to medium to large machinery applications. Its low axial clearance design is particularly effective when configured as bearing pairs in O- or X-arrangements, providing enhanced rigidity and load distribution in systems requiring bidirectional or preloaded support.
