S7015 FEGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7015 FEGA/P4A
Basic Information
System of measurement
Metric
Weight
0.67 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
115 mm
Outside diameter tolerance
-0.004mm to 0
Width
20 mm
Width tolerance
-0.2mm to 0
Contact angle
18 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
26
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
5850 lbf
Radial static load rating
4770 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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S7015 FEGA/P4A Bearing Product Overview & Core Advantages
The S7015 FEGA/P4A is a super-precision angular contact ball bearing designed for the most demanding high-speed and high-rigidity applications. As a single bearing with a 15° contact angle and Extra Light (A) preload, it delivers exceptional rotational accuracy and stability. Its primary advantage lies in its ability to handle combined radial and axial loads simultaneously, making it an ideal choice for machine tool spindles and other precision equipment where minimal runout and high dynamic performance are critical. The P4A tolerance class ensures superior dimensional and running accuracy.
S7015 FEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S7015 | Super-precision angular contact bearing series with 75mm bore. |
| FE | Designates a universally matchable (SU) bearing. Two bearings can be paired in a back-to-back (DB) or face-to-face (DF) arrangement to handle complex load conditions. |
| GA | Indicates the bearing is preloaded. GA specifically signifies an Extra Light preload (Class A), optimized for very high speeds with minimal friction and heat generation. |
| P4A | Denotes an ABEC 7 / ISO P4 precision tolerance class. The "A" suffix often refers to specific dimensional and running accuracy requirements that exceed standard P4, ensuring superior performance. |
S7015 FEGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Accuracy: Manufactured to P4A tolerance standards with an Extra Light preload, this bearing provides exceptional stiffness and minimizes axial and radial deflection under load, which is crucial for maintaining machining precision.
- Optimized for High-Speed Operation: The phenolic resin cage is lightweight and possesses excellent sliding properties, contributing to lower friction, reduced heat buildup, and a high limiting speed of 28,000 rpm.
- Superior Load Capacity: With a dynamic load rating of 5,850 lbf and a static load rating of 4,770 lbf, it reliably handles significant combined loads arising from high-speed rotation.
- Universal Matching Capability: The FE designation allows for simplified mounting of two bearings in a matched set, providing designers with flexibility to create optimized spindle arrangements for enhanced system rigidity.
- Sealed & Lubricated for Life: As a sealed bearing pre-lubricated with grease, it is protected from contamination and is ready for immediate installation, offering a maintenance-free solution within its specified operating range.
S7015 FEGA/P4A Bearing Typical Application Areas
This bearing is engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing machines.
- High-Frequency Motors: Spindles for woodworking and metalworking.
- Other Precision Rotary Equipment: Where extreme accuracy, high speed, and rigidity are non-negotiable.
