71905 ACDTP/P4B
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71905 ACDTP/P4B
Basic Information
System of measurement
Metric
Weight
0.042 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
25 mm
Bore diameter tolerance
-0.005mm to 0
Outside diameter
42 mm
Outside diameter tolerance
-0.006mm to 0
Width
9 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
18
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
1433 lbf
Radial static load rating
855 lbf
Limiting speed
34 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:
$ 177.37
/ each
In Stock
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71905 ACDTP/P4B Bearing Product Overview & Core Advantages
The 71905 ACDTP/P4B is a single-row angular contact ball bearing designed for applications demanding high precision and superior rigidity. Engineered to accommodate combined loads (radial and axial) simultaneously, this bearing features a 25° contact angle for optimal axial load capacity. Manufactured to P4 (ABEC-7) tolerance class, it delivers exceptional running accuracy and dimensional stability, making it ideal for high-speed spindles and precision machinery requiring minimal runout and vibration.
71905 ACDTP/P4B Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71905 | Basic bearing series and size designation (25mm bore, 42mm OD, 9mm width) |
| AC | Angular Contact design |
| DTP | Preload designation (specific preload level applied) |
| P4B | Tolerance class P4 (ABEC-7) with specific internal clearance |
71905 ACDTP/P4B Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The single-row angular contact design with 25° contact angle provides excellent rigidity and running accuracy under combined loads. Manufactured to P4 tolerance class with tight dimensional tolerances for superior performance in precision applications.
- Optimized Load Capacity: Engineered to handle significant combined radial and axial loads simultaneously, with a dynamic load rating of 1433 lbf and static load rating of 855 lbf.
- High-Speed Capability: Features a phenolic resin cage that reduces centrifugal forces and friction, enabling operation at limiting speeds up to 34,000 rpm.
- Precision Engineering: Constructed from chrome steel for both rings and balls, ensuring high durability and wear resistance. The open seal design allows for custom lubrication schemes while maintaining precision.
- Preload Configuration: Factory-applied preload ensures minimal axial and radial play, providing enhanced stiffness and precise rotational accuracy from installation.
71905 ACDTP/P4B Bearing Typical Application Areas
- Machine Tool Spindles - High-speed machining centers and precision lathes
- Precision Instrumentation - Measuring equipment and optical devices
- High-Speed Motors - Spindle motors and servo drives
- Medical Equipment - Dental handpieces and surgical tools
- Aerospace Components - Guidance systems and precision actuators
