S7017 ACEGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7017 ACEGA/P4A
Basic Information
System of measurement
Metric
Weight
0.94 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
85 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
130 mm
Outside diameter tolerance
-0.004mm to 0
Width
22 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
26
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
7312 lbf
Radial static load rating
6300 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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S7017 ACEGA/P4A Bearing Product Overview & Core Advantages
The S7017 ACEGA/P4A is a super-precision angular contact ball bearing designed for applications demanding the highest levels of accuracy and performance. Positioned in the P4A tolerance class, it offers exceptional running accuracy and dimensional stability. Its primary advantage lies in its ability to handle combined loads (radial and axial) simultaneously with high rigidity, making it ideal for high-speed spindles. The extra light preload (Class A) ensures smooth operation with minimal friction, while its universal matchable (SU) design allows for flexible mounting configurations in pairs to support bidirectional axial loads.
S7017 ACEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7017 | Basic bearing series, indicating a 85mm bore, 130mm OD, and 22mm width. |
| AC | 25° contact angle, optimized for supporting high axial loads. |
| EGA | The bearing is universally matchable (SU) and comes in a set of 2 bearings (Number of bearings in matched set: 2), pre-configured for back-to-back (DB) or face-to-face (DF) mounting. |
| P4A | Super-precision tolerance class, exceeding ABEC 7/ISO P4 standards, ensuring ultra-low runout and vibration for critical applications. |
S7017 ACEGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row angular contact design provides superior rigidity, enabling it to withstand significant combined radial and axial loads. With a radial dynamic load rating of 7312 lbf and a static load rating of 6300 lbf, it offers reliable performance under demanding conditions.
- High-Speed Performance: The phenolic resin cage is lightweight and robust, contributing to lower centrifugal forces and enabling a high limiting speed of 28,000 rpm. The optimized internal geometry and 25° contact angle further enhance high-speed stability.
- Precision & Stability: Manufactured to P4A tolerances with bore and outside diameter tolerances of -0.004mm to 0, this bearing guarantees exceptional running accuracy and minimal thermal growth, which is critical for maintaining precision in machining operations.
- Sealed & Lubricated for Life: As a sealed bearing pre-lubricated with grease, it is protected from contamination and is effectively maintenance-free within its specified temperature range of -30°C to 110°C.
S7017 ACEGA/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance machinery requiring extreme accuracy and speed, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and other high-RPM applications.
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges.
