7207 CD/P4ATBTA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7207 CD/P4ATBTA
Basic Information
System of measurement
Metric
Weight
0.86 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
35 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
72 mm
Outside diameter tolerance
-0.004mm to 0
Width
51 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
13
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
15502 lbf
Radial static load rating
14400 lbf
Limiting speed
41 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
Extra light / Class A
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.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7207 CD/P4ATBTA Bearing Product Overview & Core Advantages
The 7207 CD/P4ATBTA is a super-precision angular contact ball bearing designed for the most demanding applications. This triplex matched set in a back-to-back (TBT) arrangement is engineered to deliver exceptional system rigidity and rotational accuracy. Its P4A tolerance class and extra light preload (Class A) ensure smooth, high-speed operation with minimal runout. This configuration is ideal for spindle systems requiring superior stiffness and the ability to handle complex combined loads.
7207 CD/P4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7207 | Basic bearing series, 35mm bore, 72mm OD. |
| CD | Specifies a 15° contact angle and optimized internal geometry. |
| P4A | Indicates ABEC 7 / ISO P4 precision class with enhanced running accuracy requirements. |
| TBT | Denotes a Triplex Back-to-Back matched set of three bearings. |
| A | Signifies Extra Light Preload (Class A) for minimal friction at high speeds. |
7207 CD/P4ATBTA Bearing Structural Features & Performance Benefits
- Unmatched Rigidity: The triplex back-to-back arrangement creates an exceptionally stiff bearing system, crucial for minimizing deflection under heavy combined loads and moments in machine tool spindles.
- High-Speed Capability: The phenolic resin cage offers excellent strength-to-weight ratio and low friction, contributing to the high limiting speed of 41,000 rpm. The 15° contact angle provides an optimal balance between radial load capacity and high-speed performance.
- Super-Precision Operation: Manufactured to P4A tolerance class with tight dimensional and running accuracy tolerances, ensuring smooth, quiet, and vibration-free rotation essential for high-precision machining and finishing.
- Optimized Load Handling: The matched set is designed to share loads evenly, resulting in a high dynamic load rating of 15,502 lbf and reliable performance under demanding conditions.
7207 CD/P4ATBTA Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications, including:
- Machine Tool Spindles: CNC machining centers, grinding spindles, and milling spindles where high rigidity and precision are paramount.
- High-Frequency Motors: Spindles for PCB drilling and other high-speed electric motors.
- Precision Rotary Systems: Indexing tables, rotary encoders, and other equipment requiring ultra-precise motion control.
