7021 ACD/P4ADGB
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7021 ACD/P4ADGB
Basic Information
System of measurement
Metric
Weight
3.18 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
105 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
160 mm
Outside diameter tolerance
-0.004mm to 0
Width
52 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
17.462 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
33300 lbf
Radial static load rating
41850 lbf
Limiting speed
16 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
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.
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
7021 ACD/P4ADGB Bearing Product Overview & Core Advantages
The 7021 ACD/P4ADGB is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this bearing excels in high-speed operations and is capable of supporting combined loads (radial and axial) simultaneously. Its universal matchable (SU) design allows for flexible mounting in various configurations, providing high system rigidity and operational reliability in precision machinery.
7021 ACD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
The model number 7021 ACD/P4ADGB provides detailed technical specifications:
- 7021: Basic designation indicating a 105 mm bore, 160 mm OD, and 52 mm width.
- ACD: 25° contact angle and specific internal design optimized for high-speed performance.
- P4A: Denotes a super-precision tolerance class with enhanced running accuracy and dimensional stability.
- DGB: Indicates a Universal Matchable (SU) bearing, supplied as a set of two bearings (DB or DF arrangement) pre-set for optimal preload and performance.
7021 ACD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double-row angular contact design and 25° contact angle provide superior rigidity and enable the bearing to handle significant combined radial and axial loads.
- Precision & High-Speed Performance: Manufactured to P4A tolerance standards with a phenolic resin cage, this bearing achieves smooth operation at high speeds (limiting speed of 16,000 rpm) with minimal vibration.
- Optimized for Matched Sets: As a Universal Matchable (SU) bearing supplied in a set of two, it ensures simplified installation and consistent preload (Light / Class B) for enhanced system stiffness and accuracy.
- Durable Construction: Made from chrome steel for both rings and balls, it offers excellent wear resistance and long service life in demanding environments.
7021 ACD/P4ADGB Bearing Typical Application Areas
This high-precision bearing is ideally suited for:
- Machine Tool Spindles
- High-Speed Industrial Pumps & Compressors
- Precision Grinding Spindles
- Medical & Dental Equipment
- Aerospace Positioning Systems
