71915 CD/P4ADBC
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71915 CD/P4ADBC
Basic Information
System of measurement
Metric
Weight
0.7 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
75 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
105 mm
Outside diameter tolerance
-0.004mm to 0
Width
32 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
26
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
13162 lbf
Radial static load rating
16875 lbf
Limiting speed
36 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71915 CD/P4ADBC Bearing Product Overview & Core Advantages
The 71915 CD/P4ADBC is a precision angular contact ball bearing designed for demanding applications requiring high rigidity and exceptional running accuracy. This duplex back-to-back (DB) arrangement of two bearings comes as a pre-matched set, offering superior performance in handling combined loads (radial and axial). With its P4A tolerance class and moderate preload (Class C), it ensures high rotational precision, making it an ideal choice for high-speed spindles and other precision machinery.
71915 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
The model number 71915 CD/P4ADBC is decoded as follows:
- 71915: Basic bearing series, indicating a 75mm bore, 105mm OD, and 32mm width.
- C: Represents a 15° contact angle, optimized for high-speed operation and moderate axial load capacity.
- D: Indicates the bearing is part of a duplex pair.
- P4A: Denotes a very high precision tolerance class, exceeding standard ABEC-7/ISO P4 levels for enhanced running accuracy.
- DB: Specifies the duplex back-to-back arrangement, which increases rigidity and moment load capacity.
- C: Indicates a moderate preload (Class C) is applied to the set, reducing deflection and improving system stiffness.
71915 CD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists moment loads and shaft deflection, ensuring precise shaft positioning.
- Superior Load Capacity: Engineered with a 15° contact angle and high-grade chrome steel components, this bearing set is capable of supporting significant combined radial and axial loads.
- Optimized High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, while the precision-ground raceways and balls contribute to low friction and heat generation, enabling a high limiting speed of 36,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width, guaranteeing exceptional running accuracy and consistent performance.
71915 CD/P4ADBC Bearing Typical Application Areas
This high-precision bearing set is ideally suited for applications where maximum rigidity and speed are critical. Key industries and machinery include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles
- High-Frequency Motors
- Industrial Pumps and Compressors
- Medical and Laboratory Equipment
