Bearings
Angular Contact Bearings
Angular Contact Bearings
Quick Code: BB-510327
3311-DA-MA FAG Angular Contact Ball Bearing 55mm x 120mm x 49.2mm
3311-DA-MA FAG Angular Contact Ball Bearing
The 3311-DA-MA is a premium double row angular contact ball bearing from FAG, engineered for high-performance industrial applications requiring simultaneous radial and axial load capacity. This precision bearing combines robust construction with optimized clearance characteristics, making it ideal for heavy-duty machinery operating across extended temperature ranges.
Specifications:
- Brand: FAG
- Bore Diameter (Inside Dia): 55mm
- Outer Diameter (Outside Dia): 120mm
- Width: 49.2mm
- Type: Double Row Angular Contact Ball Bearing
- Reference Number: 3311-DA-MA
- Contact Angle: 30-40° (optimized for dual-direction load handling)
- Seal Type: Open bearing (unsealed design)
- Cage Material: Brass cage
- Inner Ring: Split inner ring design
- Radial Clearance: Normal radial clearance
- Tolerance Class: P0/PN2 / ABEC 1
- Temperature Range: -20°C to +150°C
- Material: Standard bearing steel
- Configuration: Standard version without flange/groove
- Arrangement: Standard version
Key Features:
- Double row design delivering enhanced load capacity, rigidity, and superior performance under combined radial and axial loads
- Contact angle optimized for efficient bidirectional load distribution and support
- Brass cage construction provides excellent durability, low friction, and smooth operation at varying speeds
- Split inner ring design enables flexible installation and accommodation of different mounting configurations
- Open bearing design allows for custom lubrication strategies and flexibility in maintenance protocols
- Normal radial clearance suitable for standard industrial machinery applications
- Extended temperature range (-20°C to +150°C) for reliable performance in challenging thermal environments
- P0/PN2 tolerance class (ABEC 1) ensures consistent, reliable performance
- Compact yet robust design ideal for space-constrained heavy-duty applications
Typical Applications:
- Heavy-duty gearboxes and transmission systems
- Industrial spindle drives and precision rotating equipment
- Large electric motors and generator systems
- Pumps, compressors, and fluid handling machinery
- Turbine and power generation equipment
- Conveyor systems and material handling equipment
- Machine tool equipment requiring sustained high-load performance
- Industrial automation systems in demanding environments
- Applications requiring operation across wide temperature ranges
The 3311-DA-MA angular contact ball bearing is purpose-built for applications demanding superior load capacity, thermal resilience, and operational reliability. The split inner ring design combined with the brass cage construction makes this bearing particularly versatile for custom installations, while the extended temperature range ensures consistent performance in challenging industrial environments. The open bearing design provides flexibility in lubrication management, making it an excellent choice for heavy-duty machinery where tailored maintenance strategies are essential.
