7224 BM
Single Row Angular Contact Ball Bearings
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Part No.
Part No.
7224 BM
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
5.89 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
120 mm
Bore diameter tolerance
-0.015mm to 0
Outside diameter
215 mm
Outside diameter tolerance
-0.02mm to 0
Width
40 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
2.1 mm
Contact angle
40 °
Distance from side face to load point
90 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
157 mm
Inner ring small-side shoulder diameter
138.6 mm
Outer Ring Dimensions
Shoulder diameter outer ring
179.4 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
37125 lbf
Radial static load rating
36675 lbf
Limiting speed
4 X 1000 rpm
Lubrication
Lubricated
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Brass
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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7224 BM Bearing Product Overview & Core Advantages
The 7224 BM is a single row angular contact ball bearing engineered for applications requiring high precision and the ability to handle significant combined loads. Its 40° contact angle provides superior axial load capacity in one direction, making it ideal for machine tool spindles and other high-performance rotating equipment. Manufactured to P6 (ABEC-3) tolerance and featuring a robust brass cage, this bearing delivers exceptional rotational accuracy and operational reliability.
7224 BM Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7224 | Standard bore diameter code (120 mm), outside diameter (215 mm), and width (40 mm). |
| B | Indicates a 40° contact angle, providing a high thrust capacity. |
| M | Denotes the cage material is brass (machined), offering high strength and excellent guidance at high speeds. |
7224 BM Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The single row design with a 40° contact angle is optimized to support substantial combined radial and axial loads simultaneously. The optimized internal geometry, including precise shoulder diameters, ensures stable load distribution.
- High-Speed Performance: The brass (M) cage is crucial for maintaining structural integrity and guiding the balls effectively at the limiting speed of 4000 rpm, reducing friction and heat generation.
- Precision Operation: Manufactured to P6 tolerance class, this bearing guarantees minimal runout and vibration, which is critical for applications demanding high rotational accuracy.
- Material Durability: Components made from chrome steel provide high hardness, wear resistance, and a long service life under demanding conditions.
7224 BM Bearing Typical Application Areas
This angular contact ball bearing is ideally suited for high-performance machinery where precision and reliability are paramount. Key applications include:
- Machine Tool Spindles
- High-Frequency Motors
- Pumps and Compressors
- Precision Gearboxes
- Agricultural Machinery
