S71910 ACDGC/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S71910 ACDGC/P4A Bearing Product Overview & Core Advantages
The S71910 ACDGC/P4A is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed capability. As a single bearing with a 25° contact angle and Moderate (Class C) preload, it offers superior running accuracy and rigidity. Its primary advantages include the ability to accommodate combined radial and axial loads, excellent high-speed performance facilitated by its phenolic cage, and long service life due to factory-applied grease lubrication. Manufactured to P4A tolerance class, this bearing is ideal for high-precision, high-reliability spindles and systems.
S71910 ACDGC/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).
- AC: Angular Contact design with a 25° contact angle.
- D: Signifies a duplex bearing arrangement (in this case, a single bearing prepared for universal duplex mounting).
- GC: Indicates a specific preload class (Moderate / Class C).
- P4A: The tolerance class, specifying extremely tight dimensional and running accuracy standards superior to ABEC 7.
S71910 ACDGC/P4A Bearing Structural Features & Performance Benefits
High Precision and Rigidity: Manufactured to P4A tolerance standards, this bearing ensures minimal runout and vibration, providing exceptional positioning accuracy and system stability. The 25° contact angle and preload contribute to high system rigidity, minimizing deflection under load.
Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, lowers friction, and allows for a high limiting speed of 34,000 rpm. This makes it suitable for very demanding high-speed spindle applications.
Universal Matching Capability: Designated as Universal Matchable (SU), individual S71910 ACDGC/P4A bearings can be universally paired in any combination (back-to-back, face-to-face, or tandem) to achieve the required stiffness and load-carrying capacity without selective matching.
Ready-to-Use and Sealed: The bearing comes sealed and pre-lubricated with high-performance grease, protecting it from contamination and providing reliable operation within a temperature range of -30°C to 110°C.
S71910 ACDGC/P4A Bearing Typical Application Areas
The S71910 ACDGC/P4A is engineered for the most demanding precision applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Frequency Motors: Spindles for CNC machinery.
- Robotic Drives: High-accuracy joints and rotary actuators.
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges.
