71915 ACEGA/P4A
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71915 ACEGA/P4A
Basic Information
System of measurement
Metric
Weight
0.34 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
23
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4770 lbf
Radial static load rating
3600 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
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
Price:
$ 192.26
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71915 ACEGA/P4A Bearing Product Overview & Core Advantages
The 71915 ACEGA/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this bearing delivers superior running precision. Its 25° contact angle and extra light preload (Class A) make it ideally suited for high-speed operation while providing excellent resistance to combined loads. As a Universal Matchable (SU) bearing, it can be paired with another identical bearing to form a precision-matched set, offering optimized preload and performance in demanding arrangements.
71915 ACEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71915 | Basic bearing designation indicating the bearing size (75mm bore, 105mm OD, 16mm width). |
| AC | Angular Contact design with a 25° contact angle. |
| E | Optimized internal design for high-speed performance. |
| GA | Specifies Universal Matchable (SU) pairing with an extra light preload (Class A). |
| P4A | Indicates a high-precision tolerance class with running accuracy requirements stricter than ABEC 7. |
71915 ACEGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance standards with extremely tight dimensional tolerances on the bore, outside diameter, and width. This ensures minimal runout and superior positional accuracy in the application.
- Optimized High-Speed Capability: The phenolic resin cage is lightweight and exhibits excellent performance at high rotational speeds, contributing to a limiting speed of 22,000 rpm. The 25° contact angle provides an optimal balance between radial and axial load capacity for high-speed spindles.
- Superior Load Capacity: The angular contact design is engineered to handle significant combined radial and axial loads simultaneously, with a dynamic load rating of 4770 lbf and a static load rating of 3600 lbf.
- Universal Matching Design: As a Universal Matchable (SU) bearing, two 71915 ACEGA/P4A bearings can be mounted together in a back-to-back, face-to-face, or tandem arrangement without the need for selective assembly, simplifying installation and ensuring consistent preload.
71915 ACEGA/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is specifically engineered for high-performance machinery requiring high speed, high rigidity, and exceptional accuracy. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: Applications in PCB drilling, semiconductor manufacturing, and other high-precision automated equipment.
- High-Frequency Motors: Spindles for routers and other high-RPM electric motors.
- Medical and Laboratory Equipment: Centrifuges and other precision rotary devices.
