7311 BECBPH
Single Row Angular Contact Ball Bearings
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Part No.
Part No.
7311 BECBPH
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1.4 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.012mm to 0
Outside diameter
120 mm
Outside diameter tolerance
-0.013mm to 0
Width
29 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
2 mm
Contact angle
40 °
Distance from side face to load point
51 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
80.3 mm
Inner ring small-side shoulder diameter
66.66 mm
Outer Ring Dimensions
Shoulder diameter outer ring
96.6 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
19125 lbf
Radial static load rating
13500 lbf
Limiting speed
7 X 1000 rpm
Lubrication
Lubricated
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Nylon
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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7311 BECBPH Bearing Product Overview & Core Advantages
The 7311 BECBPH is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This single row bearing excels at handling combined loads, simultaneously supporting high radial loads and substantial axial loads in one direction. Manufactured to P6 (ABEC-3) tolerance class, it ensures reliable performance in high-speed operations up to 7,000 rpm. Its optimized 40° contact angle and premium materials deliver superior performance for critical machinery.
7311 BECBPH Bearing Model Code Explained, Specifications & Naming Convention
The 7311 BECBPH model code provides detailed technical specifications:
- 7311: Basic designation indicating a medium series bearing with 55mm bore diameter
- BE: High capacity internal design with optimized contact angle and raceway geometry
- CB: Specific internal clearance for precision applications
- PH: Performance class designation with enhanced material and manufacturing specifications
7311 BECBPH Bearing Structural Features & Performance Benefits
This bearing's construction delivers significant performance advantages:
- High Rigidity & Load Capacity: The optimized 40° contact angle and precision-ground raceways provide exceptional stiffness, enabling the bearing to handle radial dynamic loads of 19,125 lbf and static loads of 13,500 lbf while maintaining dimensional stability under stress.
- High-Speed Performance: The nylon cage ensures smooth operation at limiting speeds of 7,000 rpm, reducing friction and heat generation during high-velocity applications.
- Precision Engineering: Manufactured to P6 tolerance class with tight dimensional controls on bore diameter (-0.012mm to 0) and outside diameter (-0.013mm to 0), ensuring consistent performance and easy installation.
- Premium Material Construction: Both rings and balls are manufactured from chrome steel, providing excellent wear resistance and durability across the operating temperature range of -30° to 110°C.
7311 BECBPH Bearing Typical Application Areas
The 7311 BECBPH is ideally suited for precision applications including:
- Machine Tool Spindles: High-speed machining centers and precision grinding equipment
- Industrial Pumps & Compressors: Applications requiring reliable performance under combined radial and axial loads
- Precision Gearboxes: Power transmission systems demanding high rotational accuracy
- Robotics & Automation: Joint mechanisms and precision positioning systems
- Aerospace Components: Auxiliary systems requiring high reliability and precision
