QJ 213 MA
Four-Point Contact Bearings Ball Bearings
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Part No.
Part No.
QJ 213 MA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1.2 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Four Point Contact
Main Dimensions
Bore diameter
65 mm
Bore diameter tolerance
-0.012mm to 0
Outside diameter
120 mm
Outside diameter tolerance
-0.013mm to 0
Width
23 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
1.5 mm
Distance from side face to load point
65 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
78.5 mm
Outer Ring Dimensions
Shoulder diameter outer ring
101 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
24750 lbf
Radial static load rating
25200 lbf
Limiting speed
9.5 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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In Stock
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QJ 213 MA Bearing Product Overview & Core Advantages
The QJ 213 MA is a high-precision metric single row four-point contact ball bearing engineered for exceptional performance in demanding applications. This bearing is specifically designed to simultaneously handle combined loads—significant radial loads and axial loads in both directions—making it an ideal solution for compact, high-rigidity arrangements. Manufactured to a P6 (ABEC-3) tolerance class, it guarantees high running accuracy and reliability, while its optimized internal geometry contributes to superior high-speed performance.
QJ 213 MA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| MA | Indicates the bearing is lubricated with a specific high-performance grease suitable for the specified temperature range. |
QJ 213 MA Bearing Structural Features & Performance Benefits
- Four-Point Contact Design: The unique raceway geometry allows a single bearing to accommodate combined radial and bidirectional axial loads efficiently, simplifying bearing arrangements and saving space.
- High Rigidity & Load Capacity: The robust single row construction with a brass cage provides excellent dimensional stability and high dynamic and static load ratings (24,750 lbf / 25,200 lbf), ensuring dependable operation under heavy loads.
- Precision & High-Speed Capability: Manufactured to a P6 tolerance class with precision-ground chrome steel components, this bearing ensures smooth operation and is capable of high limiting speeds (9,500 rpm).
- Pre-Lubricated for Immediate Use: The MA suffix signifies the bearing is pre-lubricated with a grease suitable for a wide temperature range (-30°C to 110°C), enabling immediate installation and reducing maintenance requirements.
QJ 213 MA Bearing Typical Application Areas
This bearing's ability to handle complex load conditions and its high precision makes it suitable for a variety of critical applications, including:
- Machine Tool Spindles and indexing tables
- Industrial Robots and robotic joints
- Precision Gearboxes and drive systems
- Pumps and Compressors
- Turntables and slewing rings
