71904 CDTP/P4B
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71904 CDTP/P4B
Basic Information
System of measurement
Metric
Weight
0.035 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
20 mm
Bore diameter tolerance
-0.005mm to 0
Outside diameter
37 mm
Outside diameter tolerance
-0.006mm to 0
Width
9 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
15
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
1361 lbf
Radial static load rating
720 lbf
Limiting speed
45 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:
$ 157.65
/ each
In Stock
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71904 CDTP/P4B Bearing Product Overview & Core Advantages
The 71904 CDTP/P4B is a single-row angular contact ball bearing engineered for applications demanding high precision and superior rotational accuracy. Designed to accommodate combined loads (radial and axial loads in one direction), it features a P4 (ABEC-7) tolerance class for exceptional dimensional stability and running accuracy. Its compact design, with a 9 mm width, makes it ideal for space-constrained, high-performance assemblies requiring high rigidity and reliable operation at elevated speeds.
71904 CDTP/P4B Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71904 | Basic bearing series and size designation (20 mm bore, 37 mm OD). |
| C | Specifies a 15° contact angle, optimized for high-speed applications requiring high axial load capacity. |
| DT | Indicates a matched pair arrangement (Duplex Tandem). Two bearings are mounted together to increase axial rigidity and load capacity. |
| P | Signifies that the bearing is supplied with a specific preload for enhanced stiffness and precise shaft positioning. |
| P4B | Denotes a high-precision tolerance class (P4 / ABEC-7), ensuring minimal runout and vibration for critical applications. |
71904 CDTP/P4B Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The phenolic resin cage ensures stable guidance of the balls at high speeds, contributing to low vibration and noise. Combined with the P4 precision grade and preload, this results in exceptional system stiffness and rotational accuracy.
- Superior Load Capacity: The 15° contact angle and optimized internal geometry allow the bearing to efficiently handle significant combined radial and axial loads.
- Optimized High-Speed Performance: The lightweight phenolic cage and precision-ground chrome steel components enable a high limiting speed of 45,000 rpm, making it suitable for demanding spindle applications.
- Pre-Lubricated for Immediate Use: The bearing is factory-lubricated, ensuring optimal performance from the start of operation within the specified temperature range of -30°C to 110°C.
71904 CDTP/P4B Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Medical and Dental Handpieces
- High-Speed Automation and Robotics
