S7215 ACDGC/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
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S7215 ACDGC/P4A Bearing Product Overview & Core Advantages
The S7215 ACDGC/P4A is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. This single-row bearing features a 25° contact angle and is manufactured to P4A tolerance class for superior running accuracy. Its core advantages include high rigidity and the ability to accommodate combined radial and axial loads. Preloaded with a Moderate / Class C preload, it ensures minimal deflection and stable operation, making it ideal for high-precision spindles and machinery. The bearing is universally matchable (SU), allowing for flexible arrangement in sets to handle complex load conditions.
S7215 ACDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7215 | Basic bearing series designation, indicating a 75mm bore, 130mm OD, and 25mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| DGC | Designates a Universal Matchable (SU) bearing, supplied as part of a set of two for duplex mounting. |
| P4A | Indicates a high-precision tolerance class exceeding ABEC-7 standards, ensuring extremely tight dimensional and running accuracy. |
S7215 ACDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and Moderate preload provide high rigidity, effectively supporting combined radial and axial loads. With a dynamic load rating of 15,502 lbf and static load rating of 13,162 lbf, it ensures reliable performance under significant stress.
- High-Speed Performance: The phenolic resin cage offers excellent strength-to-weight ratio and low friction, contributing to a high limiting speed of 28,000 rpm. This makes it suitable for high-speed spindles.
- Precision & Accuracy: Manufactured to P4A tolerance class with tight bore, OD, and width tolerances, this bearing guarantees superior running accuracy and minimal vibration for precision applications.
- Sealed & Lubricated for Life: The sealed design with pre-applied grease lubrication protects against contamination and provides long-term, maintenance-free operation within a temperature range of -30°C to 110°C.
- Material Quality: Constructed from chrome steel for rings and balls, ensuring high durability and wear resistance.
S7215 ACDGC/P4A Bearing Typical Application Areas
The S7215 ACDGC/P4A is engineered for high-performance applications where precision and speed are critical. Its primary uses include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices and analytical equipment.
- High-Speed Motors: Spindles for CNC routers and PCB drilling machines.
- Robotics: High-accuracy joints and rotary actuators.
- Aerospace & Defense: Gyroscopes, radar systems, and other precision mechanisms.
