S71901 CDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S71901 CDGA/P4A Bearing Product Overview & Core Advantages
The S71901 CDGA/P4A is a super-precision angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. As a single bearing from a universally matchable (SU) pair, it excels at handling combined loads (radial and axial) simultaneously. Its defining characteristics include an Extra light preload (Class A) and a P4A tolerance class, ensuring smooth operation, minimal vibration, and superior running accuracy. The compact design, featuring a 12 mm bore and 6 mm width, makes it ideal for space-constrained, high-reliability machinery.
S71901 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
- S7: Indicates a series of super-precision angular contact ball bearings.
- 1901: Denotes the size series, with a 12mm bore and 24mm outside diameter.
- C: Specifies a 15° contact angle, optimized for high-speed applications.
- DG: Signifies the bearing is supplied as part of a Universal Matchable (DUO) pair.
- A: Denotes an Extra light preload (Class A) for minimal friction and heat generation.
- P4A: The tolerance class, representing extremely tight dimensional and running accuracy standards superior to ABEC 7.
S71901 CDGA/P4A Bearing Structural Features & Performance Benefits
The bearing's construction delivers distinct performance advantages:
- High Rigidity and Precision: Manufactured to P4A tolerance standards with an Extra light preload, the bearing provides high rigidity and exceptional running accuracy, minimizing deflection under load.
- Optimized Load Capacity: The 15° contact angle is engineered to efficiently support combined loads, making it suitable for complex loading conditions.
- Superior High-Speed Performance: The phenolic resin cage offers low weight and excellent performance at high rotational speeds, contributing to a higher limiting speed. The universal match design allows for optimized axial rigidity when paired.
- Sealed and Lubricated for Life: As a sealed unit pre-lubricated with grease, it is protected from contamination and is typically maintenance-free within its specified temperature range of -30°C to 110°C.
S71901 CDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Medical and Dental Handpieces
- Aerospace Instrumentation
