S71906 ACDGA/P4A

Sealed Super Precision Angular Contact Ball Bearings

S71906 ACDGA/P4A Sealed Super Precision Angular Contact Ball Bearings
S71906 ACDGA/P4A Sealed Super Precision Angular Contact Ball Bearings

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Part No.
Part No. S71906 ACDGA/P4A

Basic Information

System of measurement Metric
Weight 0.049 kg
Tolerance class P4A
Seal type Sealed
For load direction Angular Contact

Main Dimensions

Bore diameter 30 mm
Bore diameter tolerance -0.004mm to 0
Outside diameter 47 mm
Outside diameter tolerance -0.004mm to 0
Width 9 mm
Width tolerance -0.2mm to 0
Contact angle 25 °

Ball & Washer Dimensions

Ball diameter 4.762 mm
Ball quantity 20

Performance

Temperature range - 30°C to 110 °C
Radial dynamic load rating 1521 lbf
Radial static load rating 968 lbf
Limiting speed 100.5 X 1000 rpm
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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Product Overview and Core Advantages

The S71906 ACDGA/P4A is a metric double-row angular contact ball bearing engineered for high-precision applications requiring exceptional rigidity and speed capability. Designed with a 25° contact angle and P4A super-precision tolerance, this bearing excels at simultaneously handling combined radial and axial loads in both directions. Its compact design with a 9mm width provides space-saving solutions while delivering high rotational accuracy and reliable performance in demanding operational environments.

S71906 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention

Suffix Code Technical Meaning Performance Benefit
AC Angular Contact Design Optimized for combined loading conditions
DGA Double Row, Universal Matchable Provides high rigidity and preload flexibility
P4A Super Precision Tolerance Class Ensures exceptional running accuracy and minimal vibration

Structural Features and Performance Benefits

High Rigidity Design: The double-row angular contact configuration with phenolic resin cage provides superior stiffness, making it ideal for applications requiring minimal deflection under load. The optimized internal geometry ensures stable operation even at high speeds.

Enhanced Load Capacity: With a radial dynamic load rating of 1521 lbf and static load rating of 968 lbf, this bearing effectively handles combined radial and bidirectional axial loads. The 25° contact angle optimizes load distribution across both ball rows.

Superior Speed Performance: Featuring a limiting speed of 100,500 rpm, the bearing utilizes a lightweight phenolic cage and precision-ground chrome steel components to minimize centrifugal forces and maintain stability at high rotational speeds.

Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore tolerance: -0.004mm to 0), this bearing delivers exceptional running accuracy and minimal vibration for precision applications.

S71906 ACDGA/P4A Bearing Typical Application Areas

  • High-speed machine tool spindles and precision machining centers
  • Precision instrumentation and measuring equipment
  • Medical device components requiring high rotational accuracy
  • Aerospace control systems and navigation instruments
  • Robotic arm joints and precision automation equipment
  • High-frequency motor spindles and servo applications
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