S7020 CE/HCP4AQBCA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7020 CE/HCP4AQBCA
Basic Information
System of measurement
Metric
Weight
4.74 kg
Tolerance class
P4A
Seal type
Sealed
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
15 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
27
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
26775 lbf
Radial static load rating
36000 lbf
Limiting speed
10 X 1000 rpm
Lubrication
Grease
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
Ceramic
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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S7020 CE/HCP4AQBCA Bearing Product Overview & Core Advantages
The S7020 CE/HCP4AQBCA is a premium quadruplex matched angular contact ball bearing designed for the most demanding high-precision applications. Engineered to a P4A super-precision tolerance class, this bearing set delivers exceptional rotational accuracy, high rigidity, and superior running performance. Its back-to-back (QBC) arrangement is optimized to handle significant combined loads (radial and axial) from both directions, making it an ideal solution for complex spindle systems requiring maximum stability and minimal runout.
S7020 CE/HCP4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7020 CE | Standard bearing designation with ceramic (Si3N4) balls for reduced centrifugal force, lower operating temperature, and higher limiting speed. |
| HC | Indicates a phenolic resin (Polyamide) cage, which offers excellent strength-to-weight ratio and is ideal for high-speed operation. |
| P4A | Denotes a super-precision tolerance class with even tighter specifications than ABEC 7 (P4), ensuring extreme running accuracy. |
| QBC | Specifies a Quadruplex (4-bearing) set in a Back-to-Back (DB) arrangement. This configuration provides high moment stiffness and excellent operational stability. |
S7020 CE/HCP4AQBCA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The quadruplex back-to-back (QBC) matched set creates an exceptionally stiff bearing system capable of withstanding heavy combined radial and axial loads from both directions, significantly enhancing the moment rigidity of the entire assembly.
- Superior High-Speed Performance: The combination of ceramic balls and a lightweight phenolic cage minimizes centrifugal forces and friction, enabling a very high limiting speed of 10,000 rpm. The 15° contact angle provides an optimal balance between axial load capacity and speed.
- Precision & Longevity: Manufactured to P4A tolerance class with a sealed design and pre-lubrication, this bearing ensures consistent, high-accuracy performance with minimal maintenance requirements over a long service life.
- Thermal Stability: The use of ceramic balls reduces heat generation during operation, which is critical for maintaining precision in thermally sensitive applications.
S7020 CE/HCP4AQBCA Bearing Typical Application Areas
This precision bearing set is specifically engineered for high-performance machinery where ultimate accuracy, speed, and rigidity are non-negotiable. Key applications include:
- High-Frequency Machine Tool Spindles: For CNC milling, grinding, and turning centers.
- Precision Grinding Spindles
- High-Speed Machining Centers
- Advanced Robotic Drives and Rotary Units
- Aerospace Test Rigs and Instrumentation
