7020 ACD/P4AQBCG138
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7020 ACD/P4AQBCG138
Basic Information
System of measurement
Metric
Weight
5.05 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
100 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
150 mm
Outside diameter tolerance
-0.004mm to 0
Width
96 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
22
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
46800 lbf
Radial static load rating
72000 lbf
Limiting speed
16 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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7020 ACD/P4AQBCG138 Bearing Product Overview & Core Advantages
The 7020 ACD/P4AQBCG138 is a precision quadruplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and load capacity. This P4A tolerance class bearing is supplied as a pre-loaded matched set of four in a Back-to-Back (QBC) arrangement, enabling it to handle combined radial and axial loads simultaneously with high accuracy. Its optimized design ensures superior performance in high-precision, high-rigidity systems where operational reliability is critical.
7020 ACD/P4AQBCG138 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with a 25° contact angle |
| P4A | High precision tolerance class with enhanced running accuracy |
| QBC | Quadruplex Back-to-Back matched arrangement for maximum rigidity |
| G138 | Specific internal design and pre-load specification |
7020 ACD/P4AQBCG138 Bearing Structural Features & Performance Benefits
- Exceptional Rigidity: The quadruplex back-to-back arrangement creates an extremely rigid bearing system, minimizing deflection under heavy combined loads and ensuring precise shaft positioning.
- High Load Capacity: Engineered with a 25° contact angle and 22 high-grade chrome steel balls, this bearing delivers a high radial dynamic load rating of 46,800 lbf and a static load rating of 72,000 lbf.
- Optimized for Precision: Manufactured to P4A tolerance class with tight dimensional control on the bore diameter (100 mm), outside diameter (150 mm), and width (96 mm) for superior running accuracy.
- High-Speed Capability: The lightweight phenolic cage and optimized internal geometry contribute to a high limiting speed of 16,000 rpm, making it suitable for high-speed applications.
- Pre-Lubricated & Ready-to-Install: The bearing is pre-lubricated, simplifying installation and ensuring immediate operational readiness within a temperature range of -30°C to 110°C.
7020 ACD/P4AQBCG138 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring maximum rigidity and accuracy.
- High-Speed Machining Centers: Applications demanding high rotational speeds and minimal runout.
- Precision Gearboxes: Industrial gearboxes and transmission systems where precise shaft alignment is critical.
- Robotic Actuators & Rotary Tables: Automation equipment requiring high moment stiffness and positional accuracy.
- Specialized Industrial Machinery: Pumps, compressors, and other machinery utilizing multi-bearing arrangements for heavy-duty operation.
