Bearings
Angular Contact Bearings
Angular Contact Bearings
Quick Code: BB-508392
3311 B-2ZRTNG NSK Double Row Angular Contact Ball Bearing 55mm x 120mm x 49.2mm
3311 B-2ZRTNG NSK Double Row Angular Contact Ball Bearing
The 3311 B-2ZRTNG is a premium double row angular contact ball bearing from NSK, specifically engineered for demanding high-speed applications requiring simultaneous radial and axial load capacity in both directions. This precision bearing combines NSK's renowned manufacturing excellence with advanced sealed protection, making it ideal for heavy-duty industrial equipment where reliability, durability, and consistent performance are critical.
Specifications:
- Reference: 3311 B-2ZRTNG
- Brand: NSK
- Bore Diameter: 55mm
- Outer Diameter: 120mm
- Width: 49.2mm
- Row Type: Double Row
- Contact Angle: 40°
- Cage: Polyamide for reduced friction and enhanced performance
- Radial Clearance: Normal
- Tolerance Class: P0/PN2 (ABEC 1)
- Material: Standard bearing steel
- Outer Ring: Without flange/groove
- Operating Temperature Range: -20°C to +120°C
- Arrangement: Bearing pair with low axial clearance in O- and X-arrangement
Construction & Design Benefits:
- Double row configuration provides enhanced load capacity and superior performance under combined radial and axial loads
- 40° contact angle optimized for balanced load distribution and smooth operation
- Sealed protection on both sides (2ZRTNG) guards against contamination and retains lubrication for extended bearing life
- Polyamide cage construction ensures reliable operation in demanding environments with reduced friction
- Low axial clearance design in O- and X-arrangement configuration enables flexible mounting arrangements and superior load sharing between rows
- Increased rigidity and stiffness ideal for precision applications requiring minimal deflection
- Superior tilting moment resistance for applications with misalignment
Ideal Applications:
- High-speed spindle systems and machine tool applications
- Industrial gearboxes and transmission assemblies
- Heavy-duty pumps and compressors
- Electric motor applications
- Automotive drive systems and differentials
- Precision manufacturing equipment
- Industrial machinery under combined bi-directional loads
- Applications requiring sealed bearing protection and extended operational reliability
The 3311 B-2ZRTNG combines NSK's trusted engineering with robust double row design, sealed protection, and polyamide cage construction, making it an excellent choice for precision applications demanding consistent performance, superior load capacity, and reliability across varying operational conditions.
Reference: 3311 B-2ZRTNG | Brand: NSK
