S7020 ACDGC/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7020 ACDGC/P4A
Basic Information
System of measurement
Metric
Weight
1.27 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
24 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
17842 lbf
Radial static load rating
18000 lbf
Limiting speed
16.25 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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S7020 ACDGC/P4A Bearing Product Overview & Core Advantages
The S7020 ACDGC/P4A is a high-precision, single-row angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. Engineered to accommodate combined loads, it efficiently supports both radial and significant one-directional axial loads. Its P4A super-precision tolerance and moderate preload (Class C) ensure smooth, stable operation, making it ideal for high-speed spindles and other precision machinery where minimal runout and high rotational accuracy are critical. The sealed design with phenolic cage contributes to reliable, long-term performance.
S7020 ACDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7020 | Basic bearing designation, defining the core dimensions (100mm bore, 150mm OD, 24mm width). |
| AC | Angular Contact design with a 25° contact angle for optimal axial load capacity. |
| DGC | Designates a Universal Matchable (SU) bearing, supplied in a set of 3 for precise preload arrangement. |
| P4A | Indicates a super-precision tolerance class, exceeding ABEC 7 standards for exceptional running accuracy. |
S7020 ACDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance with a moderate preload (Class C), this bearing delivers superior rotational accuracy and stiffness, minimizing deflection under load for stable performance.
- Optimized Load Capacity: The 25° contact angle is engineered to handle significant combined radial and axial loads simultaneously, making it suitable for complex loading conditions.
- High-Speed Capability: The lightweight, robust phenolic resin cage ensures excellent dimensional stability and low friction, contributing to a high limiting speed of 16,250 rpm.
- Sealed and Lubricated for Life: The integral seals protect against contamination, while the factory-applied grease lubrication supports operation within a temperature range of -30°C to 110°C, offering a maintenance-free solution.
S7020 ACDGC/P4A Bearing Typical Application Areas
This bearing is specified for high-performance applications requiring precision and speed, including:
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- High-Speed Pumps and Compressors
- Advanced Robotics and Automation
