71952 ACD/P4A
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71952 ACD/P4A
Basic Information
System of measurement
Metric
Weight
12.2 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
260 mm
Bore diameter tolerance
-0.013mm to 0
Outside diameter
360 mm
Outside diameter tolerance
-0.015mm to 0
Width
46 mm
Width tolerance
-0.24mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
30.162 mm
Ball quantity
29
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
59625 lbf
Radial static load rating
90000 lbf
Limiting speed
4.8 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
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:
$ 7088.52
/ each
In Stock
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71952 ACD/P4A Bearing Product Overview & Core Advantages
The 71952 ACD/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Designed to accommodate primarily axial loads in one direction, combined with moderate radial loads, its optimized internal geometry and P4 (ABEC-7) super-precision tolerance ensure smooth, stable operation. The phenolic resin cage and preloaded configuration contribute to superior high-speed performance and minimal vibration, making it an ideal choice for demanding machine tool spindles and other precision equipment.
71952 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| ACD | Indicates a 25° contact angle and optimized internal design for high axial load capacity and rigidity. |
| P4A | Denotes a super-precision tolerance class (equivalent to ABEC-7), ensuring extremely tight dimensional and running accuracy for high-speed, low-vibration applications. |
71952 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and robust internal construction enable the bearing to handle significant one-direction axial loads and combined loads effectively. The preload eliminates internal clearance, enhancing system stiffness and rotational accuracy.
- Superior High-Speed Performance: The lightweight phenolic resin cage ensures excellent dimensional stability and low friction at high speeds, contributing to the bearing's high limiting speed of 4,800 rpm.
- Precision Engineering: Manufactured to P4 tolerance class, this bearing guarantees minimal runout and vibration, which is critical for applications requiring extreme positional accuracy and smooth operation.
- Optimized Material Selection: Components made from chrome steel provide high hardness, wear resistance, and long service life under demanding conditions.
71952 ACD/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for:
- Machine Tool Spindles (milling, grinding, and turning centers)
- High-Speed Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- High-Frequency Motors
