S71901 ACDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71901 ACDGA/P4A
Basic Information
System of measurement
Metric
Weight
0.011 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
12 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
24 mm
Outside diameter tolerance
-0.004mm to 0
Width
6 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
3.175 mm
Ball quantity
13
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
574 lbf
Radial static load rating
266 lbf
Lubrication
Grease
Matched arrangement
Single
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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S71901 ACDGA/P4A Bearing Product Overview & Core Advantages
The S71901 ACDGA/P4A is a super-precision angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. As a single-row bearing with a 25° contact angle and Universal Matchable (SU) designation, it is engineered to handle combined loads—primarily thrust loads with radial load capacity. Its P4A tolerance class ensures ultra-precise running accuracy, making it ideal for high-reliability, high-rigidity applications where minimal runout and smooth operation are critical.
S71901 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle. |
| DGA | Duplex arrangement, Ground preload (specific preload grade). |
| P4A | Super-precision tolerance class, tighter than ABEC 7, ensuring extremely low running noise and vibration. |
S71901 ACDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: Manufactured to P4A tolerance standards with a phenolic resin cage, this bearing provides exceptional dimensional stability and rotational accuracy, crucial for high-speed spindles.
- Superior Load Capacity: The 25° contact angle is optimized to handle significant combined radial and axial loads simultaneously, offering reliable performance in demanding conditions.
- Optimized High-Speed Performance: The lightweight phenolic cage and precision-ground components minimize centrifugal forces and friction, enabling very high rotational speeds.
- Pre-Lubricated & Sealed: Factory-filled with high-performance grease and featuring a sealed design, it offers long-term, maintenance-free operation within a temperature range of -30°C to 110°C.
S71901 ACDGA/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for:
- Machine Tool Spindles: High-speed machining centers, grinding spindles.
- Precision Instruments: Measuring devices, optical scanners.
- High-Frequency Motors: Spindles for PCB drilling, small precision motors.
- Medical Equipment: Dental handpieces, small surgical tools.
- Aerospace Components: Gyroscopes, precision actuators.
