S71913 CDGA/HCP4A
Hybrid Ceramic Super Precision 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
S71913 CDGA/HCP4A Bearing Product Overview & Core Advantages
The S71913 CDGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Its core advantages stem from its extra light preload (Class A) and P4A super-precision tolerance class, ensuring minimal runout and vibration for superior rotational accuracy. The bearing features a phenolic resin cage and ceramic balls, contributing to lower friction, higher limiting speeds, and extended service life. It is universally matchable (SU designation), allowing for precise preload control when mounted in sets, making it ideal for high-rigidity spindles.
Model Code Breakdown
- S71913: Denotes a high-precision angular contact ball bearing series with a 65mm bore, 90mm OD, and 13mm width.
- CD: Represents a 15° contact angle, optimized for combined loads with a high thrust capacity component.
- GA: Indicates the bearing is supplied with a universal matchable (SU) preload grouping for simplified mounting in sets.
- HC: Signifies the use of Hybrid Ceramic components (ceramic balls with steel rings).
- P4A: Specifies a super-precision tolerance class exceeding ABEC 7, ensuring extreme dimensional and running accuracy.
S71913 CDGA/HCP4A Bearing Structural Features & Performance Benefits
High-Speed & Low Friction Performance: The combination of a lightweight phenolic cage and ceramic (silicon nitride) balls significantly reduces centrifugal forces and friction, enabling a high limiting speed of 36,000 rpm. This hybrid construction also provides inherent electrical insulation.
Exceptional Rigidity & Accuracy: The extra light preload (Class A) and P4A super-precision manufacturing eliminate internal clearance, resulting in superior shaft positioning accuracy and high system rigidity under combined radial and axial loads.
Long-Term Reliability: As a sealed bearing pre-lubricated with grease, it is protected from contamination and is ready for immediate use, offering a maintenance-free solution within its specified temperature range of -30°C to 110°C.
S71913 CDGA/HCP4A Bearing Typical Application Areas
The S71913 CDGA/HCP4A is engineered for the most demanding high-precision and high-speed machinery, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and spindle drives requiring high accuracy and rigidity.
- High-Frequency Motors and Spindles: Applications where extreme rotational speeds are critical.
- Medical Equipment: Dental handpieces and laboratory centrifuges.
- Aerospace Instrumentation: Gyroscopes and navigation systems.
