QJ 217 MA
Four-Point Contact Bearings Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
QJ 217 MA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
2.25 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Four Point Contact
Main Dimensions
Bore diameter
85 mm
Bore diameter tolerance
-0.015mm to 0
Outside diameter
150 mm
Outside diameter tolerance
-0.015mm to 0
Width
28 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
2 mm
Distance from side face to load point
83 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
100 mm
Outer Ring Dimensions
Shoulder diameter outer ring
128 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
35100 lbf
Radial static load rating
38925 lbf
Limiting speed
7.5 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
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 217 MA Bearing Product Overview & Core Advantages
The QJ 217 MA is a four-point contact ball bearing designed for exceptional performance in demanding applications. As a single row bearing with a unique raceway geometry, it can simultaneously support combined loads, including radial loads and bidirectional axial loads, with high efficiency. Its compact design, featuring a brass cage and P6 (ABEC-3) precision tolerance, makes it an ideal choice for applications requiring high rigidity, precise rotation, and reliable operation. The bearing is pre-lubricated for immediate use and offers a wide operating temperature range.
QJ 217 MA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| QJ 217 | Standard designation for a four-point contact ball bearing with a 85 mm bore and 150 mm outside diameter. |
| MA | Indicates the bearing is pre-lubricated with a specific high-performance grease suitable for the specified temperature range. |
QJ 217 MA Bearing Structural Features & Performance Benefits
- Four-Point Contact Design: The optimized raceway allows the bearing to handle combined radial and axial loads from both directions with a single bearing row, simplifying assembly and saving space.
- High Rigidity & Precision: Manufactured to P6 tolerance class with a brass cage, this bearing ensures smooth operation, minimal vibration, and high running accuracy, which is critical for precision machinery.
- Optimized Load Capacity: With a high dynamic load rating of 35,100 lbf and static load rating of 38,925 lbf, it is engineered for long service life under substantial loads.
- Ready-to-Install Convenience: The bearing is pre-lubricated (MA suffix), reducing maintenance needs and ensuring immediate, reliable performance upon installation.
QJ 217 MA Bearing Typical Application Areas
This bearing is ideally suited for applications requiring robust performance and compact design, including:
- Industrial Robots (e.g., robotic arms and rotary joints)
- Machine Tool Components (e.g., rotary tables and indexing heads)
- Material Handling Equipment (e.g., turntables and slewing rings)
- Aerospace Actuation Systems
- Medical and Precision Instrumentation
