71810 CD/P4DBC
71800 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71810 CD/P4DBC Bearing Product Overview & Core Advantages
The 71810 CD/P4DBC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) matched set is preloaded to Moderate / Class C specifications, ensuring high system stiffness and minimal axial and radial runout. Its compact design, featuring a 50 mm bore and 14 mm width, makes it ideal for space-constrained, high-precision arrangements where superior performance under combined loads is critical.
71810 CD/P4DBC Bearing Model Code Explained, Specifications & Naming Convention
- 71810: Basic bearing designation (50mm bore, 65mm OD, 14mm width).
- C: Denotes a 15° contact angle, optimized for handling combined radial and axial loads.
- D: Indicates the bearing is part of a duplex pair.
- P4: Specifies a high-precision tolerance class (superior to ABEC 7), ensuring tight dimensional and running accuracy.
- DB: Defines the matched arrangement as Back-to-Back. This configuration provides high moment rigidity and is excellent for applications with overturning moments.
- C: Specifies the Moderate preload (Class C) applied to the matched set, which increases stiffness and optimizes bearing performance.
71810 CD/P4DBC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement of two bearings creates a widely spaced support system, significantly increasing moment stiffness and enabling the bearing set to withstand substantial combined radial and axial loads.
Precision & High-Speed Performance: Manufactured to a P4 tolerance class, this bearing guarantees exceptional running accuracy. The phenolic resin cage is lightweight and robust, contributing to smooth operation and suitability for high-speed applications up to 46,000 rpm.
Optimized Material & Lubrication: Constructed from chrome steel for both rings and balls, the bearing offers high durability and fatigue resistance. It comes pre-lubricated for immediate operation within a temperature range of -30°C to 110°C.
71810 CD/P4DBC Bearing Typical Application Areas
This high-precision, preloaded bearing set is ideally suited for:
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Gearboxes
