71915 ACD/P4ADBA
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71915 ACD/P4ADBA
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
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
26
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
12442 lbf
Radial static load rating
15975 lbf
Limiting speed
22 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
Extra light / Class A
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
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71915 ACD/P4ADBA Bearing Product Overview & Core Advantages
The 71915 ACD/P4ADBA is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) arrangement provides superior stability and can accommodate combined radial and axial loads simultaneously. Manufactured to P4A tolerance class, it delivers high running accuracy and is pre-lubricated for immediate use, making it ideal for high-precision, high-reliability machinery.
71915 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
The model number 71915 ACD/P4ADBA breaks down as follows:
- 71915: Basic series designation for a high-precision angular contact bearing.
- AC: Angular Contact design with a 25° contact angle.
- D: Indicates a Duplex (two bearings in a set) configuration.
- DB: Specifies the Back-to-Back mounting arrangement.
- P4A: Denotes a high-precision tolerance class for both inner and outer rings.
71915 ACD/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a rigid bearing system that effectively resists moment loads, ensuring precise shaft positioning and minimal deflection under heavy loads.
- Superior Load Capacity: With a 25° contact angle and optimized internal geometry, this bearing is engineered to handle significant combined radial and axial loads.
- Precision Performance: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width, this bearing ensures smooth, quiet operation with minimal runout.
- High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, enabling stable operation at high rotational speeds, with a limiting speed of 22,000 rpm.
- Pre-Lubricated & Ready-to-Use: The bearing comes pre-lubricated, simplifying installation and providing immediate protection upon startup.
71915 ACD/P4ADBA Bearing Typical Application Areas
This high-precision duplex bearing is ideally suited for applications requiring maximum rigidity and accuracy, including:
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Rotary Tables
