S7019 CDGC/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S7019 CDGC/P4A Bearing Product Overview & Core Advantages
The S7019 CDGC/P4A is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered to a P4A tolerance class, it offers superior running accuracy and dimensional stability. This bearing is capable of supporting combined loads (radial and axial) simultaneously and is universally matchable, allowing for flexible mounting arrangements in preloaded sets to achieve maximum system rigidity and rotational precision. Its compact design and moderate preload (Class C) make it an ideal choice for high-speed spindles and other precision machinery.
S7019 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7019 | Basic bearing series, indicating a 95mm bore, 145mm OD, and 24mm width. |
| C | Specifies a 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| DG | Indicates a universally matchable bearing. Two bearings can be paired in a "back-to-back" (DB) or "face-to-face" (DF) arrangement. |
| C | Denotes a moderate preload (Class C), providing enhanced rigidity for the application. |
| P4A | Signifies a high-precision tolerance class with very tight limits on bore, outer diameter, and width tolerances for superior running accuracy. |
S7019 CDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The P4A tolerance class ensures minimal runout and precise shaft positioning. The moderate preload eliminates internal clearance, resulting in a very stiff bearing system that minimizes deflection under load.
- Superior Load Capacity: The 15° contact angle and robust construction provide excellent capability for handling combined radial and axial loads.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the 15° contact angle and precision grinding contribute to a high limiting speed of 15,000 rpm.
- Sealed and Lubricated for Life: As a sealed bearing, it is filled with grease and protected from contamination, making it suitable for maintenance-free operation within its specified temperature range.
- Premium Materials: Manufactured from chrome steel for rings and balls, ensuring high durability and long service life under demanding conditions.
S7019 CDGC/P4A Bearing Typical Application Areas
The S7019 CDGC/P4A is engineered for high-performance applications where precision, speed, and rigidity are critical. Key industries and machinery include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, engraving, and high-frequency motor spindles.
- Robotics: High-accuracy joints and rotary actuators.
- Medical Equipment: Dental handpieces and laboratory centrifuges.
- Aviation & Aerospace: Gyroscopes and auxiliary power units (APUs).
