7017 CD/P4ADT
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7017 CD/P4ADT
Basic Information
System of measurement
Metric
Weight
1.79 kg
Tolerance class
P4A
Seal type
Open
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
15 °
Ball & Washer Dimensions
Ball diameter
14.288 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
24975 lbf
Radial static load rating
29025 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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7017 CD/P4ADT Bearing Product Overview & Core Advantages
The 7017 CD/P4ADT is a precision angular contact ball bearing supplied as a duplex tandem (DT) matched set. Engineered for applications demanding exceptional rotational accuracy and rigidity, this bearing is manufactured to P4A tolerance class, ensuring minimal runout and vibration. Its core advantage lies in its ability to handle combined loads—significant radial and high unidirectional axial loads—simultaneously. The preloaded tandem arrangement provides maximum axial stiffness, making it an ideal solution for high-precision, high-rigidity applications such as machine tool spindles.
7017 CD/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7017 | Standard bearing series designation, indicating a 85 mm bore, 130 mm OD, and 44 mm width. |
| C | Specifies a 15° contact angle, optimized for high-speed operation and high axial load capacity. |
| D | Indicates the bearing is part of a duplex (matched) set. |
| P4A | Denotes a super-precision tolerance class, with enhanced dimensional and running accuracy for demanding applications. |
| DT | Specifies the Duplex Tandem arrangement. Two bearings are mounted in tandem to share the axial load in one direction, effectively doubling the axial load capacity. |
7017 CD/P4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem (DT) arrangement and preload eliminate axial internal clearance, resulting in a system with extremely high axial and radial rigidity. This configuration is designed to handle very high unidirectional axial loads.
- Precision & High-Speed Performance: Manufactured to P4A tolerances, this bearing ensures smooth, quiet operation with minimal vibration. The phenolic resin cage is lightweight and robust, contributing to stable operation at the high limiting speed of 28,000 rpm. The optimized 15° contact angle further enhances high-speed capability.
- Superior Material & Construction: Made from high-grade chrome steel for both rings and balls, the bearing offers excellent durability and fatigue life. The open seal type allows for efficient lubrication management in controlled environments.
7017 CD/P4ADT Bearing Typical Application Areas
This bearing is specifically designed for the most demanding industrial sectors, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers where precision, rigidity, and speed are critical.
- High-Frequency Spindles: PCB drilling and precision engraving machines.
- Precision Rotary Tables: Indexing and positioning systems requiring high axial stiffness.
- Aerospace & Defense Systems: Gyroscopes, radar equipment, and other high-performance mechanisms.
