S7215 ACDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7215 ACDGA/P4A
Basic Information
System of measurement
Metric
Weight
1.23 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
75 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
130 mm
Outside diameter tolerance
-0.004mm to 0
Width
25 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
17
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
15502 lbf
Radial static load rating
13162 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
2
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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S7215 ACDGA/P4A Bearing Product Overview & Core Advantages
The S7215 ACDGA/P4A is a precision double row angular contact ball bearing engineered for applications demanding exceptional accuracy and rigidity. Its design enables it to simultaneously handle significant combined loads (radial and bidirectional axial loads), making it an ideal solution for high-speed, high-precision machinery. Featuring a phenolic cage and P4A super-precision tolerance, this bearing offers superior running accuracy, reduced vibration, and enhanced operational reliability in compact installations.
S7215 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S7215 | Basic bearing designation, indicating a 75mm bore, 130mm OD double row angular contact ball bearing. |
| ACD | Angular Contact, Double Row design. |
| GA | Indicates a specific contact angle of 25° and Extra Light (Class A) preload for optimal stiffness and minimal friction. |
| P4A | Denotes a super-precision tolerance class, superior to ABEC-7, ensuring extremely tight dimensional and running accuracy. |
S7215 ACDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design provides superior radial and axial stiffness, enabling the bearing to support substantial combined loads without sacrificing performance.
- Optimized High-Speed Performance: The lightweight phenolic resin cage ensures excellent dimensional stability and low friction at high rotational speeds, contributing to a limiting speed of 28,000 rpm.
- Precision & Reliability: Manufactured to P4A tolerance with a universal matching designation (SU), this bearing guarantees smooth, quiet, and vibration-free operation, critical for precision applications.
- Sealed & Pre-Lubricated: The sealed design with factory-applied grease lubrication protects against contamination and provides long-term, maintenance-free operation within a temperature range of -30°C to 110°C.
S7215 ACDGA/P4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications including:
- Machine Tool Spindles
- High-Speed Grinding & Milling Heads
- Precision Robotics & Automation Equipment
- Medical & Dental Equipment Spindles
- High-Frequency Motors & Spindles
