7207 CD/P4ADBA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7207 CD/P4ADBA
Basic Information
System of measurement
Metric
Weight
0.57 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
34 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
11700 lbf
Radial static load rating
9675 lbf
Limiting speed
41 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
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.
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7207 CD/P4ADBA Bearing Product Overview & Core Advantages
The 7207 CD/P4ADBA is a super-precision angular contact ball bearing designed for the most demanding applications. Its duplex back-to-back (DB) arrangement and P4A tolerance class deliver exceptional running accuracy, high system rigidity, and superior performance under combined loads. Pre-loaded as a matched set, this bearing is optimized for high-speed operation and offers outstanding rotational precision, making it an ideal choice for high-performance spindles and precision machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7207 | Basic bearing series and size designation (35mm bore, 72mm OD). |
| C | 15° contact angle. |
| D | Duplex bearing (two single bearings paired). |
| P4A | High precision tolerance class (exceeds ABEC 7/ISO P4). |
| DB | Back-to-Back arrangement for high moment stiffness. |
| A | Extra light preload for minimal friction and high-speed capability. |
7207 CD/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Moment Load Capacity: The duplex back-to-back (DB) arrangement creates a wide effective spread, significantly increasing the bearing's resistance to moment loads and providing exceptional system rigidity.
- Super-Precision Performance: Manufactured to P4A tolerance class, this bearing ensures extremely low runout and smooth, vibration-free operation, which is critical for achieving high surface finishes and machining accuracy.
- Optimized High-Speed Operation: The phenolic resin cage offers excellent strength-to-weight ratio, low friction, and is ideal for high-speed applications. Combined with the 15° contact angle and extra light preload, it enables a high limiting speed of 41,000 rpm.
- Superior Load Handling: Engineered to support combined radial and axial loads simultaneously. The dynamic load rating of 11,700 lbf ensures long service life under demanding operating conditions.
- Premium Materials: Constructed from chrome steel for rings and balls, providing high hardness, wear resistance, and durability.
7207 CD/P4ADBA Bearing Typical Application Areas
This bearing is specifically engineered for high-precision, high-speed machinery, including:
- Machine Tool Spindles: CNC milling centers, grinding spindles, and lathe spindles.
- High-Frequency Motors: Spindles for PCB drilling and routing.
- Precision Rotary Systems: Indexing tables, rotary encoders, and measuring instruments.
- Medical Equipment: High-speed dental handpieces and surgical tools.
- Aerospace & Defense Systems: Gyroscopes and radar positioning systems.
