S71910 ACDGB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S71910 ACDGB/P4A Bearing Product Overview & Core Advantages
The S71910 ACDGB/P4A is a super-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This single-row bearing is part of a universally matchable set, allowing for flexible arrangement in duplex pairs (DB, DF, DT) to achieve optimal rigidity and load handling. Its core advantages include the ability to support high combined loads (radial and axial), facilitated by a 25° contact angle. Manufactured to a P4A tolerance class, it guarantees ultra-precise running accuracy, making it ideal for high-speed spindles and other precision machinery where minimal runout and high rotational stability are critical.
S71910 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
- S7: Denotes a series of super-precision bearings.
- 1910: Standard size designation (Bore: 50mm, OD: 72mm, Width: 12mm).
- ACD: Signifies an Angular Contact design with a 25° contact angle.
- GB: Indicates a Light preload (Class B) is applied, reducing axial play for enhanced system rigidity.
- P4A: Specifies the tolerance class, representing very high precision levels for both dimensional and running accuracy.
S71910 ACDGB/P4A Bearing Structural Features & Performance Benefits
This bearing's performance is derived from its meticulous construction. The use of a phenolic resin cage contributes to excellent high-speed performance, low friction, and reduced weight, supporting the high limiting speed. The chrome steel rings and balls ensure high durability and fatigue life. The light preload (GB) minimizes axial internal clearance, resulting in superior stiffness and precise shaft positioning, which is crucial for machining accuracy. As a sealed bearing pre-lubricated with grease, it offers protection against contamination and is ready for immediate use, simplifying installation and maintenance.
S71910 ACDGB/P4A Bearing Typical Application Areas
The S71910 ACDGB/P4A is engineered for the most demanding sectors. Its primary applications include:
- Machine Tool Spindles: For high-precision milling, grinding, and turning centers.
- High-Speed Machining Centers: Where exceptional rotational accuracy and rigidity are non-negotiable.
- Precision Instrumentation: Used in measuring devices and analytical equipment.
- Robotic Drives: Providing accurate and reliable motion control in automation.
