7013 CD/P4ATBTB
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7013 CD/P4ATBTB
Basic Information
System of measurement
Metric
Weight
1.29 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
65 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
100 mm
Outside diameter tolerance
-0.004mm to 0
Width
54 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
20
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
20340 lbf
Radial static load rating
25200 lbf
Limiting speed
24 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Triplex Back-to-Back (TBT)
Number of bearings in matched set
3
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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7013 CD/P4ATBTB Bearing Product Overview & Core Advantages
The 7013 CD/P4ATBTB is a premium triplex matched angular contact ball bearing set configured in a back-to-back (TBT) arrangement. Engineered for the most demanding applications, this precision bearing set is distinguished by its P4A super-precision tolerance class and light preload (Class B), ensuring exceptional rotational accuracy and system rigidity. Its design is optimized to handle combined loads—significant radial loads and axial loads in both directions—simultaneously, making it an ideal choice for high-performance spindles and other precision machinery requiring maximum stability and minimal runout.
7013 CD/P4ATBTB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7013 | Basic bearing designation indicating a 65 mm bore, 100 mm OD, and 18 mm width per bearing. |
| CD | Specifies a 15° contact angle, which is optimized for high-speed operation and provides a balanced capacity for radial and axial loads. |
| P4A | Denotes a super-precision tolerance class with even tighter tolerances than standard ABEC 7/P4, ensuring ultra-high running accuracy. |
| TBT | Indicates a Triplex Back-to-Back matched set. Three bearings are selectively matched and preloaded as a unit to provide superior system stiffness and handle moment loads effectively. |
7013 CD/P4ATBTB Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Stability: The triplex back-to-back configuration creates a wide, rigid support system that significantly increases resistance to moment loads and shaft deflection, which is critical for maintaining precision in machining and grinding operations.
- Superior Load Capacity: The angular contact design with a 15° contact angle enables the bearing set to efficiently support high combined radial and axial loads from both directions, a key requirement for complex load scenarios.
- High-Speed Capability: The lightweight phenolic resin cage minimizes centrifugal forces and ensures stable operation, contributing to the high limiting speed of 24,000 rpm. The open design facilitates efficient lubrication management for cooling at high speeds.
- Precision and Long Service Life: Manufactured to P4A tolerance class from high-grade chrome steel, this set guarantees minimal vibration and consistent performance. The matched set and light preload ensure immediate precision upon installation without requiring complex adjustments.
7013 CD/P4ATBTB Bearing Typical Application Areas
This precision triplex bearing set is specifically designed for high-end machinery where ultimate precision, rigidity, and speed are non-negotiable. Key applications include:
- High-Frequency Machine Tool Spindles (for milling, grinding, and turning)
- Precision Grinding Spindles
- High-Speed CNC Machining Centers
- Industrial High-Speed Pumps and Compressors
