71907 ACDGC/P4A
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71907 ACDGC/P4A
Basic Information
System of measurement
Metric
Weight
0.074 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
10 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2077 lbf
Radial static load rating
1395 lbf
Limiting speed
56 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
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
71907 ACDGC/P4A Bearing Product Overview & Core Advantages
The 71907 ACDGC/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a single-row bearing with a 25° contact angle and Universal Matchable (SU) designation, it is engineered to accommodate combined radial and axial loads simultaneously. Manufactured to the stringent P4A tolerance class, it offers superior running accuracy, making it ideal for high-speed spindles and precision machinery. Its moderate preload (Class C) ensures optimal stiffness and minimal deflection under operational stresses.
71907 ACDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71907 | Standard bearing series number, indicating the bearing dimensions (35mm bore, 55mm OD, 10mm width). |
| AC | Angular Contact design. |
| D | High contact angle (25°). |
| GC | Specific internal clearance and preload group for moderate preload (Class C). |
| P4A | Indicates a high-precision tolerance class with running accuracy requirements tighter than ABEC 7. |
71907 ACDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The 25° contact angle and optimized internal geometry enable the bearing to support significant combined radial and axial loads. The moderate preload eliminates internal clearance, resulting in a very stiff bearing system that minimizes shaft deflection.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the precision-ground chrome steel components ensure smooth operation. This construction contributes to a high limiting speed of 56,000 rpm.
- Precision and Longevity: Manufactured to P4A tolerance class, this bearing guarantees exceptional running accuracy and low vibration. The open seal type allows for efficient lubrication management in controlled environments, while the high-grade chrome steel ensures long-term durability and resistance to wear.
- Universal Matching: Designated as Universal Matchable (SU), these bearings can be universally paired in any combination to form a matched set, simplifying mounting and ensuring pre-defined performance characteristics.
71907 ACDGC/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for applications where high speed, rigidity, and accuracy are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instruments: Measuring devices, optical scanners, and coordinate measuring machines (CMM).
- High-Frequency Motors and Spindles: Electric spindles for PCB drilling and routing.
- Robotics: High-accuracy joints and arm linkages.
- Aerospace and Defense Systems: Gyroscopes, radar equipment, and navigation systems.
