QJ 216 MA
Four-Point Contact Bearings Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
QJ 216 MA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1.85 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Four Point Contact
Main Dimensions
Bore diameter
80 mm
Bore diameter tolerance
-0.012mm to 0
Outside diameter
140 mm
Outside diameter tolerance
-0.015mm to 0
Width
26 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
2 mm
Distance from side face to load point
77 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
95.3 mm
Outer Ring Dimensions
Shoulder diameter outer ring
120 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
32850 lbf
Radial static load rating
35100 lbf
Limiting speed
8 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
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
QJ 216 MA Bearing Product Overview & Core Advantages
The QJ 216 MA is a metric single row four-point contact ball bearing engineered for applications requiring high precision and the ability to handle combined loads. Its unique four-point contact design enables it to support significant radial loads and axial loads from both directions simultaneously, making it an exceptionally compact and versatile solution. Manufactured to a P6 (ABEC-3) tolerance class, it delivers high running accuracy and reliability, ideal for demanding industrial environments. The bearing is pre-lubricated for immediate use and offers a wide operating temperature range.
Model Code Breakdown
The QJ 216 MA model number provides key technical specifications:
- QJ: Denotes a four-point contact ball bearing.
- 216: Standard bearing designation indicating an 80 mm bore, 140 mm outside diameter, and 26 mm width.
- M: Signifies brass cage construction, which provides high strength and is suitable for high-speed applications.
- A: Indicates a 25° contact angle, optimized for carrying substantial axial loads.
QJ 216 MA Bearing Structural Features & Performance Benefits
- Four-Point Contact & High Rigidity: The optimized raceway geometry creates four points of contact between the balls and raceways under load. This design provides high rigidity and enables the bearing to accommodate combined radial and bidirectional axial loads with a single bearing, saving space and simplifying assembly.
- Superior Load Capacity: With a dynamic load rating of 32,850 lbf and a static load rating of 35,100 lbf, this bearing is built for durability and long service life under heavy loads.
- High-Speed Capability: The robust brass cage (M) ensures stable operation and guides the balls effectively, contributing to a high limiting speed of 8,000 rpm.
- Precision Performance: Manufactured to P6 tolerance, it guarantees precise shaft positioning and low vibration, which is critical for high-precision machinery.
- Material Integrity: Constructed from chrome steel for both rings and balls, the bearing offers excellent hardness, wear resistance, and fatigue life.
QJ 216 MA Bearing Typical Application Areas
The QJ 216 MA is ideally suited for a wide range of industrial equipment where compactness, precision, and the ability to handle complex loads are paramount. Key applications include:
- Industrial Robots (especially in robotic arms and rotary joints)
- Precision Turntables and Indexing Tables
- Machine Tool Accessories (e.g., rotary tables, dividing heads)
- Wind Turbine Yaw and Pitch Drives
- Medical and Semiconductor Equipment
