S7017 ACE/P4ADBB
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7017 ACE/P4ADBB
Basic Information
System of measurement
Metric
Weight
1.88 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
44 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
11858 lbf
Radial static load rating
12600 lbf
Limiting speed
28 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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S7017 ACE/P4ADBB Bearing Product Overview & Core Advantages
The S7017 ACE/P4ADBB is a precision duplex angular contact ball bearing configured in a back-to-back (DB) arrangement. This design is engineered to provide exceptional rigidity and stability, making it ideal for applications requiring high rotational accuracy and the ability to withstand combined loads (radial and axial loads from both directions). Preloaded to Light / Class B and manufactured to P4A tolerance class, it delivers superior running precision and is optimized for high-speed operation up to 28,000 rpm.
S7017 ACE/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7017 | Standard bearing series designation with 85 mm bore and 130 mm outside diameter. |
| ACE | Indicates a 25° contact angle and specific internal design optimized for high-speed performance. |
| P4A | Denotes a high-precision tolerance class for superior dimensional and running accuracy. |
| DBB | Signifies a Duplex Back-to-Back matched set of two bearings, providing high moment rigidity. |
S7017 ACE/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide effective spread between load centers, significantly increasing the bearing's resistance to moment loads and ensuring exceptional system rigidity.
- Superior Load Capacity: With a 25° contact angle and a dynamic load rating of 11,858 lbf, this bearing is engineered to handle significant combined radial and axial loads from both directions simultaneously.
- Optimized High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, while the precision-ground chrome steel components and optimized internal geometry contribute to smooth operation at the limiting speed of 28,000 rpm.
- Pre-Configured Precision: Supplied as a preloaded matched set, the bearings are ready for installation, eliminating complex adjustment procedures and ensuring consistent, high-performance operation from the start.
S7017 ACE/P4ADBB Bearing Typical Application Areas
This bearing is specifically designed for high-performance machinery requiring precision and speed, including:
- Machine Tool Spindles (e.g., milling, grinding)
- High-Frequency Spindles
- Precision Gearboxes
- Industrial Pumps and Compressors
- Robotic Arm Joints and Rotary Axes
