S7015 ACE/P4ADBB
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7015 ACE/P4ADBB
Basic Information
System of measurement
Metric
Weight
1.34 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
40 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
26
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
9068 lbf
Radial static load rating
9338 lbf
Limiting speed
22 X 1000 rpm
Lubrication
Grease
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Light / Class B
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 ACE/P4ADBB Bearing Product Overview & Core Advantages
The S7015 ACE/P4ADBB is a super-precision angular contact ball bearing configured in a duplex back-to-back (DB) arrangement. This pre-matched set is engineered to deliver exceptional rotational accuracy, high system rigidity, and reliable performance under combined radial and axial loads. With a P4A tolerance class and light preload (Class B), it is ideally suited for applications demanding the highest levels of precision and speed stability. Its sealed and pre-lubricated design ensures long-term, maintenance-free operation in demanding environments.
Model Code Breakdown
| Suffix Code | Technical Meaning |
|---|---|
| S7015 | Super-precision bearing series with 75 mm bore diameter. |
| ACE | Specific internal design and contact angle (25°). |
| P4A | High precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
| DBB | Duplex Back-to-Back pre-mounted arrangement. |
S7015 ACE/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists moment loads and provides exceptional stability. This configuration is optimized to handle significant combined radial and axial loads.
- Super-Precision Performance: Manufactured to a P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for achieving high positional accuracy and superior surface finishes in precision machinery.
- Optimized High-Speed Capability: The phenolic resin cage is lightweight and possesses excellent sliding properties, contributing to lower friction, reduced heat generation, and stable operation at the high limiting speed of 22,000 rpm.
- Sealed & Pre-Lubricated for Longevity: The integral seals protect against contamination, and the factory-applied grease lubrication within the specified temperature range (-30°C to 110°C) provides reliable, maintenance-free service life.
S7015 ACE/P4ADBB Bearing Typical Application Areas
This bearing is designed for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and high-speed milling heads.
- Precision Rotary Systems: In semiconductor manufacturing equipment, coordinate measuring machines (CMM), and optical scanners.
- High-Frequency Motors & Spindles: Used in electric vehicle motors, high-frequency spindles, and turbo-molecular pumps.
- Aerospace & Defense Systems: In gyroscopes, radar systems, and other critical guidance and control mechanisms.
