71902 ACE/P4ADGC
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71902 ACE/P4ADGC Bearing Product Overview & Core Advantages
The 71902 ACE/P4ADGC is a precision angular contact ball bearing designed for applications requiring exceptional rotational accuracy and high-speed performance. As part of the Universal Matchable (SU) series, it can be universally paired with an identical bearing to form a rigid back-to-back (DB) or face-to-face (DF) arrangement. Its defining characteristics include a 25° contact angle and Moderate (Class C) preload, enabling it to handle significant combined radial and axial loads simultaneously. Manufactured to the stringent P4A tolerance class, this bearing is the ideal choice for high-precision, high-reliability machinery.
71902 ACE/P4ADGC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71902 | Basic bearing series and size designation (15mm bore, 28mm OD). |
| ACE | Designates a 25° contact angle and specific internal design optimizations. |
| P4A | Indicates a high-precision tolerance class with enhanced running accuracy. |
| DGC | Signifies the bearing is lubricated and supplied as part of a Universal Matchable (SU) pair. |
71902 ACE/P4ADGC Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design and 25° contact angle are engineered to support substantial combined loads. The Moderate preload (Class C) eliminates internal clearance, ensuring maximum system stiffness and precise shaft positioning.
- Superior High-Speed Performance: The lightweight, durable phenolic resin cage minimizes centrifugal forces and friction, contributing to the high limiting speed of 95,000 rpm. This makes it suitable for very demanding high-speed spindles.
- Precision Engineering: Manufactured to P4A tolerance standards, this bearing guarantees minimal runout and vibration, which is critical for achieving high levels of machining accuracy and surface finish.
- Universal Matchability: As a Universal Matchable (SU) bearing, it simplifies mounting and ensures optimal performance when paired in pre-defined arrangements (DB or DF), providing a ready-made solution for high-rigidity bearing sets.
71902 ACE/P4ADGC Bearing Typical Application Areas
The 71902 ACE/P4ADGC is ideally suited for high-performance applications where precision and speed are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and small precision motors.
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges.
