Bearings
Angular Contact Bearings
Angular Contact Bearings
Quick Code: BB-508550
3311 BTNGC3 NSK Double Row Angular Contact Ball Bearing 55mm x 120mm x 49.2mm
3311 BTNGC3 NSK Double Row Angular Contact Ball Bearing
This premium double row angular contact ball bearing from NSK is engineered to deliver exceptional performance in demanding applications requiring simultaneous radial and axial load capacity. With a 55mm bore diameter and 120mm outer diameter, the substantial 49.2mm width provides superior load-carrying capability and rigidity. The double row configuration makes this bearing ideal for heavy-duty industrial equipment where bidirectional axial loads and high radial loads are present simultaneously.
Key Characteristics:
- Double row angular contact design with 40-degree contact angle for optimized load distribution
- Bearing pair configuration with low axial clearance suitable for O- and X-arrangement mounting
- Enhanced load capacity in both radial and axial directions compared to single row designs
- Open bearing design (no seals) ideal for applications with controlled external lubrication systems
- Polyamide cage construction for durability, stability, and smooth operation
- Slightly increased radial clearance for enhanced operational flexibility
- Robust construction suitable for high-speed precision applications
Specifications:
- Reference Number: 3311 BTNGC3
- Manufacturer: NSK
- Bore Diameter: 55mm
- Outer Diameter: 120mm
- Width: 49.2mm
- Row Type: Double Row
- Contact Angle: 40°
- Cage Material: Polyamide
- Seal Type: None (open bearing)
- Radial Clearance: Slightly increased
- Arrangement: Bearing pair with low axial clearance (O- and X-arrangement compatible)
- Outer Ring: Without flange or groove
- Tolerance Class: P0/PN2 (ABEC 1)
- Operating Temperature Range: -20°C to +120°C
- Material: Standard bearing steel
Applications:
Ideal for use in gearboxes, industrial spindles, heavy-duty pumps, electric motors, machine tool spindles, and precision industrial machinery where combined bidirectional radial and axial loads are present. The double row configuration provides exceptional rigidity and load capacity, making it particularly suitable for:
- High-speed transmission systems
- Industrial compressors and blowers
- Heavy-duty gearbox assemblies
- Spindle assemblies in precision machinery
- Equipment requiring enhanced axial load capacity in both directions
- Applications demanding superior load-carrying performance and stability
The open design makes it suitable for applications with controlled lubrication systems, while NSK's precision engineering ensures reliable performance in demanding industrial environments.
