QJ 1017 N2MA/C4
Four-Point Contact Bearings Ball Bearings
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Part No.
Part No.
QJ 1017 N2MA/C4
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1.1 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
130 mm
Outside diameter tolerance
-0.015mm to 0
Width
22 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
1.1 mm
Distance from side face to load point
75 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
100 mm
Outer Ring Dimensions
Shoulder diameter outer ring
117 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
22388 lbf
Radial static load rating
25650 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
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QJ 1017 N2MA/C4 Bearing Product Overview & Core Advantages
The QJ 1017 N2MA/C4 is a four-point contact ball bearing designed for applications requiring exceptional precision and load handling capabilities. This metric single-row bearing excels in supporting combined loads, including significant radial loads and axial loads in both directions, within a compact design. Manufactured to a P6 (ABEC-3) tolerance class, it ensures high running accuracy and reliability, making it ideal for demanding, high-precision machinery and equipment.
QJ 1017 N2MA/C4 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| QJ 1017 | Basic designation for a four-point contact ball bearing series with a 85 mm bore and 130 mm outside diameter. |
| N2 | Indicates two machined grooves in the outer ring for securing snap rings. |
| MA | Specifies a brass cage (machined), which provides high strength and stability, suitable for high-speed applications. |
| C4 | Denotes a larger than standard radial internal clearance. This is beneficial for applications with significant thermal expansion or where interference fits are used, preventing preload and ensuring smooth operation. |
QJ 1017 N2MA/C4 Bearing Structural Features & Performance Benefits
- Four-Point Contact Design: The unique raceway geometry allows the bearing to simultaneously support combined radial and axial loads from both directions, effectively replacing a pair of angular contact ball bearings and saving space and weight.
- High Rigidity and Precision: Manufactured from chrome steel with a P6 tolerance class, the bearing offers high dimensional stability and running accuracy, which is critical for precision applications.
- High-Speed Capability: The robust machined brass cage (MA) ensures guidance and stability of the balls at high rotational speeds, contributing to a limiting speed of 8,000 rpm.
- Axial Securing Feature: The N2 designation with snap ring grooves facilitates easy axial location and secure mounting within a housing, simplifying assembly.
- Optimized Internal Clearance: The C4 clearance provides operational reliability in applications prone to thermal expansion, preventing binding and reducing friction.
QJ 1017 N2MA/C4 Bearing Typical Application Areas
The QJ 1017 N2MA/C4 is engineered for high-performance applications across various industries, including:
- Robotics and Automation: Used in robot arm joints and rotary tables for precise motion control.
- Machine Tools: Ideal for rotary tables, indexing heads, and other precision positioning systems.
- Aerospace and Defense: Employed in radar bases, gyroscopes, and other critical guidance systems.
- Medical Equipment: Suitable for high-precision scanners and diagnostic equipment requiring smooth, accurate rotation.
- Industrial Machinery: Used in turntables, slewing rings, and other applications requiring support for complex load combinations.
