S71909 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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S71909 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The S71909 ACDGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. This sealed bearing features a single-row design with a 25° contact angle, enabling it to handle combined radial and axial loads simultaneously. Manufactured to P4A tolerance class, it offers superior running accuracy and is universally matchable (SU), allowing for precise preload control when used in sets. Its compact design, with a 45 mm bore and 12 mm width, makes it ideal for space-constrained, high-speed applications.
S71909 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Series designation for high-precision angular contact bearings |
| 1909 | Bore diameter: 45 mm, Outside diameter: 68 mm, Width: 12 mm |
| AC | 25° Contact Angle |
| D | High-Precision Machined Brass Cage |
| GA | Universal Matchable (SU) bearing, suitable for preloaded arrangements |
| HCP4A | Tolerance Class P4A (higher than ABEC 7), indicating super-precision dimensions and running accuracy |
S71909 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
High-Speed & Rigidity: The combination of a phenolic resin cage and ceramic balls significantly reduces centrifugal forces and friction, enabling a high limiting speed of 41,000 rpm. This construction provides excellent dimensional stability and high rigidity under complex loads.
Superior Load Capacity: With a 25° contact angle and high-grade chrome steel rings, this bearing is engineered to support significant combined radial and axial loads (Dynamic: 2790 lbf, Static: 2025 lbf).
Maintenance-Free Operation: The integral seals and factory-applied grease lubrication protect against contamination and provide long-term, maintenance-free service within a temperature range of -30°C to 110°C.
Ultra-Precision: Manufactured to P4A tolerance class with tight bore, OD, and width tolerances, this bearing ensures minimal runout and vibration for ultra-smooth operation in the most demanding precision applications.
S71909 ACDGA/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles for high-speed milling and grinding
- Precision Medical Equipment and dental handpieces
- High-Frequency Spindles in PCB drilling and routing machines
- Aerospace Actuation Systems and instrumentation
- Robotic Arm Joints requiring high accuracy and speed
