71907 CE/P4ADT
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71907 CE/P4ADT
Basic Information
System of measurement
Metric
Weight
0.15 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
55 mm
Outside diameter tolerance
-0.004mm to 0
Width
20 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2812 lbf
Radial static load rating
2092 lbf
Limiting speed
56 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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71907 CE/P4ADT Bearing Product Overview & Core Advantages
The 71907 CE/P4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex tandem (DT) arrangement bearing set is preloaded, delivering superior high rigidity and axial load capacity in one direction. Manufactured to P4A tolerance class, it is engineered for high-speed operation and is pre-lubricated for immediate use, making it an ideal solution for high-precision spindles and machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71907 | Basic bearing series and size designation (35mm bore, 55mm OD, 20mm width). |
| CE | Internal design featuring a 15° contact angle and optimized internal geometry. |
| P4A | Indicates a high-precision tolerance class with strict limits on bore, outside diameter, and width runouts. |
| DT | Signifies a Duplex Tandem matched set of two bearings, configured to maximize axial load capacity in one direction. |
71907 CE/P4ADT Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The duplex tandem arrangement combines two bearings to create a highly rigid assembly capable of supporting significant axial loads in one direction. The 15° contact angle is optimized for this load type.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the precision P4A grading ensures smooth operation, contributing to a high limiting speed of 56,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional tolerances, this bearing ensures minimal runout and vibration for applications requiring extreme accuracy.
- Preload & Matched Set: Supplied as a preloaded, matched set of two bearings, eliminating the need for complex adjustment during installation and ensuring consistent, immediate performance.
71907 CE/P4ADT Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning spindles where precision and rigidity are critical.
- Precision Drives: High-frequency motors and spindles.
- Robotics: High-accuracy joints and arms requiring minimal deflection.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
