71813 CD/P4QFCB
71800 Series Super Precision Angular Contact Ball 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
71813 CD/P4QFCB Bearing Product Overview & Core Advantages
The 71813 CD/P4QFCB is a precision angular contact ball bearing configured in a Quadruplex Face-to-Face (QFC) matched set. Engineered for applications demanding exceptional rotational accuracy and high system rigidity, this bearing arrangement is preloaded to Light / Class B specifications. Its primary advantage lies in its ability to handle combined loads (radial and axial) simultaneously with high precision, making it ideal for high-performance spindles and other precision machinery where minimal deflection is critical.
71813 CD/P4QFCB Bearing Model Code Explained, Specifications & Naming Convention
- 71813: Basic bearing designation (65mm bore, 85mm OD, 40mm width).
- CD: Internal design featuring a 15° contact angle and specific internal clearances/geometry optimized for the matched set.
- P4: Denotes a high-precision tolerance class, superior to standard ABEC-7, ensuring extremely tight dimensional and running accuracy.
- QFC: Quadruplex Face-to-Face arrangement. This indicates a set of four bearings mounted in a face-to-face configuration, which increases system rigidity and moment load capacity.
- B: Specifies the Light preload level applied to the matched set, reducing axial and radial play for enhanced stiffness and positioning accuracy.
71813 CD/P4QFCB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The Quadruplex Face-to-Face (QFC) arrangement of four bearings creates an exceptionally stiff bearing system, capable of withstanding significant moment loads and combined loads. The 15° contact angle is optimized for supporting substantial axial loads in both directions.
Precision Performance: Manufactured to P4 tolerance class, this bearing guarantees minimal runout and vibration, which is essential for high-speed, high-accuracy applications. The phenolic cage offers excellent dimensional stability and low friction, contributing to smooth operation at high speeds.
Optimized for High-Speed Operation: With a limiting speed of 36,000 rpm and a lightweight phenolic cage, this bearing is designed for high-speed applications. The bearing is pre-lubricated, ensuring immediate operational readiness and reliable performance within its specified temperature range.
71813 CD/P4QFCB Bearing Typical Application Areas
This high-precision, high-rigidity bearing set is primarily used in demanding industrial sectors, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles
- High-Frequency Machining Centers
- Other precision rotary equipment requiring maximum rigidity and accuracy.
