S71910 ACE/P4ADT
Sealed Super Precision Angular Contact Ball Bearings
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Main Dimensions
Ball & Washer Dimensions
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S71910 ACE/P4ADT Bearing Product Overview & Core Advantages
The S71910 ACE/P4ADT is a super-precision angular contact ball bearing designed for the most demanding applications. As a duplex tandem (DT) matched set, it delivers exceptional axial rigidity and is optimized to handle very high unidirectional thrust loads. Manufactured to the stringent P4A tolerance class, this bearing offers superior running accuracy, making it an ideal choice for high-speed spindles and other precision machinery where minimal runout and maximum stiffness are critical.
S71910 ACE/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71910 | Denotes the bearing series and size (10mm bore x 72mm OD x 24mm width). |
| ACE | Indicates a 25° contact angle and specific internal design optimized for high-speed operation. |
| P4A | Signifies a super-precision tolerance class with enhanced running accuracy requirements. |
| DT | Identifies the bearing as a Duplex Tandem preloaded pair, designed for maximum axial stiffness in one direction. |
S71910 ACE/P4ADT Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex tandem arrangement combines two bearings with a preload, creating an extremely rigid assembly capable of supporting very high unidirectional thrust loads. The 25° contact angle further enhances thrust load capacity.
Super-Precision Performance: Manufactured to ABEC 7 / P4A tolerances, this bearing ensures minimal vibration and exceptional running accuracy, which is paramount for applications like machine tool spindles.
Optimized High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, contributing to a high limiting speed of 34,000 rpm. The standard grease lubrication is suitable for this high-speed range.
Durable Construction: Components made from chrome steel provide high fatigue life and durability under demanding operating conditions.
S71910 ACE/P4ADT Bearing Typical Application Areas
The S71910 ACE/P4ADT is engineered for high-performance applications, including:
- Machine Tool Spindles (CNC milling, grinding, and turning centers)
- High-Frequency Machining Spindles
- Precision Robotic Drives
- High-speed Dental and Medical Handpieces
