S7002 CDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7002 CDGA/P4A
Basic Information
System of measurement
Metric
Weight
0.03 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
15 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
32 mm
Outside diameter tolerance
-0.004mm to 0
Width
9 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1170 lbf
Radial static load rating
551 lbf
Limiting speed
95 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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S7002 CDGA/P4A Bearing Product Overview & Core Advantages
The S7002 CDGA/P4A is a super-precision angular contact ball bearing designed for the most demanding high-speed and high-rigidity applications. As a single bearing from a universally matchable (SU) set, it excels at handling combined loads, including radial loads and axial loads in one direction. Its defining characteristics are its extra light preload (Class A) and P4A tolerance class, ensuring exceptional running accuracy, minimal vibration, and superior performance in precision machinery. The sealed design with grease lubrication offers long-term, maintenance-free operation.
S7002 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7002 | Basic bearing series, indicating a metric, 15mm bore, 32mm OD super-precision angular contact bearing. |
| C | 15° contact angle, optimized for high-speed operation. |
| DG | The bearing is universally matchable (SU). Two bearings can be paired in a back-to-back (DB) or face-to-face (DF) arrangement to support axial loads in both directions. |
| A | Extra light preload (Class A), which minimizes friction and heat generation, making it ideal for very high speeds. |
| P4A | Tolerance class superior to ABEC 7 (P4), with even tighter controls on runout and dimensional accuracy for ultimate precision. |
S7002 CDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance standards with an extra light preload, this bearing provides exceptional rotational accuracy and system stiffness, critical for minimizing deflection under load.
- Optimized High-Speed Performance: The 15° contact angle and phenolic resin cage are engineered for high-speed operation, contributing to a limiting speed of 95,000 rpm. The lightweight cage reduces centrifugal forces and ensures stability.
- Superior Load Capacity: The precision-ground chrome steel rings and balls provide a high dynamic load rating, enabling reliable performance under significant radial and one-direction axial loads.
- Maintenance-Free Operation: The sealed design retains the factory-fill grease and protects against contamination, offering a long service life within the specified temperature range of -30°C to 110°C without relubrication.
S7002 CDGA/P4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications requiring extreme precision and speed, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices and laboratory equipment.
- High-Frequency Spindles: PCB drilling and routing spindles.
- Medical Equipment: High-speed dental handpieces and centrifuges.
