71915 ACDGB/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71915 ACDGB/P4A
Basic Information
System of measurement
Metric
Weight
0.35 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
16 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
7605 lbf
Radial static load rating
7988 lbf
Limiting speed
22 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 176.82
/ each
In Stock
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71915 ACDGB/P4A Bearing Product Overview & Core Advantages
The 71915 ACDGB/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered to a P4A tolerance class, this bearing offers superior dimensional stability and running accuracy. Its primary advantage lies in its ability to accommodate combined loads, efficiently handling both radial and axial loads in one direction. The light preload (Class B) ensures minimal deflection and high system rigidity, making it ideal for high-speed spindles and precision machinery where rotational accuracy is paramount.
71915 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71915 | Basic bearing series and size designation |
| AC | Angular Contact design with a 25° contact angle |
| DGB | Universal Matchable (SU) bearing, supplied in a set of 2 for back-to-back (DB) arrangement |
| P4A | High precision tolerance class exceeding ABEC 7/ISO P4 standards |
71915 ACDGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: Manufactured to P4A tolerance class with a light preload, this bearing delivers exceptional running accuracy and stiffness, critical for minimizing deflection in high-speed applications.
- Optimized Load Capacity: The 25° contact angle is engineered to support significant combined loads, providing excellent performance under complex loading conditions.
- Superior High-Speed Performance: The phenolic cage offers low weight and excellent sliding properties, contributing to a high limiting speed of 22,000 rpm. The open design facilitates efficient lubrication and cooling.
- Universal Matching: Designated as Universal Matchable (SU) and supplied in a matched set of 2, these bearings are pre-configured for simplified installation in back-to-back arrangements, ensuring optimal preload and performance.
71915 ACDGB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring high precision and rigidity.
- Precision Robotics: Arm joints and rotary units where accuracy and repeatability are critical.
- High-Frequency Motors & Spindles: Applications demanding stable operation at very high rotational speeds.
- Medical Equipment: Dental handpieces and imaging device rotors.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
