7030 ACD/P4AQBCA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7030 ACD/P4AQBCA
Basic Information
System of measurement
Metric
Weight
16.7 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
150 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
225 mm
Outside diameter tolerance
-0.004mm to 0
Width
140 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
23.812 mm
Ball quantity
22
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
98100 lbf
Radial static load rating
162000 lbf
Limiting speed
11 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
Extra light / Class A
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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7030 ACD/P4AQBCA Bearing Product Overview & Core Advantages
The 7030 ACD/P4AQBCA is a precision quadruplex back-to-back angular contact ball bearing designed for applications demanding exceptional rigidity and load capacity. This P4A tolerance class bearing features an extra light preload (Class A) and is supplied as a matched set of four bearings, enabling it to handle significant combined radial and axial loads from both directions simultaneously. Its optimized design makes it ideal for high-precision, high-stiffness systems requiring superior rotational accuracy.
7030 ACD/P4AQBCA 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 (exceeding ABEC 7/ISO P4) |
| QBC | Quadruplex Back-to-Back matched arrangement |
| A | Extra Light Preload for minimal friction and high-speed capability |
7030 ACD/P4AQBCA Bearing Structural Features & Performance Benefits
- Exceptional Rigidity: The quadruplex back-to-back configuration creates an extremely rigid bearing system that minimizes deflection under heavy combined loads, ensuring precise shaft positioning and system stability.
- Superior Load Capacity: With a dynamic load rating of 98,100 lbf and static load rating of 162,000 lbf, this bearing set is engineered to withstand demanding operational conditions while maintaining performance.
- High-Speed Performance: The phenolic cage material and optimized internal geometry contribute to stable operation at limiting speeds up to 11,000 rpm, making it suitable for high-speed applications.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore and OD tolerance: -0.004mm to 0), ensuring consistent high-precision performance in critical applications.
7030 ACD/P4AQBCA Bearing Typical Application Areas
- Machine Tool Spindles for milling, grinding, and turning centers
- High-Precision Gearboxes and transmission systems
- Industrial Pumps and Compressors requiring high rigidity
- Aerospace Positioning Systems and rotary tables
- Medical Equipment such as CT scanners and high-speed centrifuges
