S71907 ACD/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71907 ACD/P4ADGA
Basic Information
System of measurement
Metric
Weight
0.15 kg
Tolerance class
P4A
Seal type
Sealed
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
25 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3330 lbf
Radial static load rating
2812 lbf
Limiting speed
56 X 1000 rpm
Lubrication
Grease
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
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
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S71907 ACD/P4ADGA Bearing Product Overview & Core Advantages
The S71907 ACD/P4ADGA is a high-precision, double row angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. Engineered with an extra light preload (Class A) and manufactured to P4A tolerance class, this bearing is optimized for high-speed operation and superior running accuracy. Its double row design enables it to support substantial combined loads—simultaneously handling radial loads and axial loads in both directions—making it an ideal, compact solution for high-reliability machinery where space and performance are critical.
S71907 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Benefit |
|---|---|---|
| ACD | Angular Contact, Double Row design | Enables high rigidity and support for combined radial and bidirectional axial loads. |
| P4A | High Precision Tolerance Class | Guarantees extremely tight dimensional and running accuracy for superior performance. |
| DGA | Sealed on both sides, Grease lubricated | Provides effective contamination exclusion and is lubricated for life, ensuring maintenance-free operation. |
S71907 ACD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row angular contact construction provides a significantly stiffer support system compared to single row bearings, allowing it to handle demanding combined loads with minimal deflection.
- Superior High-Speed Performance: The combination of a lightweight phenolic cage, a 25° contact angle, and precision P4A grading enables stable operation at high rotational speeds (up to 56,000 rpm).
- Precision & Longevity: Manufactured to P4A tolerance class with an extra light preload, this bearing ensures low noise, low vibration, and high running accuracy. The integral seals and pre-applied grease protect against contaminants and provide reliable lubrication across the specified temperature range (-30°C to 110°C).
S71907 ACD/P4ADGA Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Medical and Dental Equipment
- Robotic Arms and Precision Gearboxes
