S7020 ACB/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7020 ACB/HCP4A
Basic Information
System of measurement
Metric
Weight
1.29 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
100 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
150 mm
Outside diameter tolerance
-0.009mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
10.319 mm
Ball quantity
27
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
6322 lbf
Radial static load rating
5738 lbf
Limiting speed
12 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1390.58
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S7020 ACB/HCP4A Bearing Product Overview & Core Advantages
The S7020 ACB/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. This single-row bearing features a 25° contact angle and is supplied with a preload, making it ideal for setups where high stiffness and minimal axial/radial runout are critical. Its construction with ceramic balls and a phenolic cage enables superior high-speed performance and thermal stability. Designed to handle combined loads (simultaneous radial and axial loads), it is a premier choice for high-reliability, precision machinery.
S7020 ACB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
The model designation S7020 ACB/HCP4A is decoded as follows:
- S7020: Basic bearing series and size designation (Bore: 100mm, OD: 150mm, Width: 24mm).
- AC: Angular Contact design.
- B: Denotes a 40° contact angle (Note: The provided spec indicates 25°, confirming the specific "B" designation requires the manufacturer's catalog. This text assumes "B" represents a standard contact angle for this series).
- HC: Hybrid Ceramic construction, indicating the use of ceramic balls.
- P4: P4 (ABEC-7) Tolerance Class, signifying very high precision levels.
- A: Indicates a specific preload level.
S7020 ACB/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The P4 tolerance class and applied preload ensure superior shaft positioning accuracy and high system rigidity, effectively minimizing deflection under load.
- Exceptional High-Speed Capability: The combination of low-density ceramic balls reduces centrifugal forces, while the lightweight phenolic resin cage offers excellent strength and guidance at high rotational speeds, achieving a limiting speed of 12,000 rpm.
- Hybrid Performance: Ceramic balls provide advantages including reduced friction, lower operating temperature, extended lubricant life, and non-conductivity, enhancing performance in high-speed and electrically sensitive environments.
- Optimized Load Capacity: The 25° contact angle is optimized to handle significant combined radial and axial loads simultaneously, with a dynamic load rating of 6322 lbf and static load rating of 5738 lbf.
- Sealed and Lubricated for Long Life: The sealed design protects against contamination, and the bearing is pre-lubricated for immediate use, ensuring reliable operation within a temperature range of -30°C to 110°C.
S7020 ACB/HCP4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications such as:
- Machine Tool Spindles
- High-Frequency Motors and Spindles
- Precision Grinding Equipment
- Aerospace Actuators and Control Systems
- Medical and Dental High-Speed Handpieces
- Robotic Arm Joints and Precision Gearboxes
