S71908 ACDTP/HCP4B
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71908 ACDTP/HCP4B
Basic Information
System of measurement
Metric
Weight
0.1 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
40 mm
Bore diameter tolerance
-0.006mm to 0
Outside diameter
62 mm
Outside diameter tolerance
-0.007mm to 0
Width
12 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
21
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
2632 lbf
Radial static load rating
1800 lbf
Limiting speed
24 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 377.05
/ each
In Stock
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S71908 ACDTP/HCP4B Bearing Product Overview & Core Advantages
The S71908 ACDTP/HCP4B is a high-precision double row angular contact ball bearing engineered for applications demanding exceptional accuracy and rigidity. This sealed bearing features a P4 (ABEC-7) tolerance class and is preloaded, ensuring minimal runout and superior rotational accuracy. Its compact design, with a 40 mm bore and 12 mm width, provides a high load capacity in a minimal space. The bearing is capable of supporting combined loads (radial and axial loads simultaneously) and is optimized for high-speed operation up to 24,000 rpm, making it an ideal choice for high-reliability, precision machinery.
S71908 ACDTP/HCP4B Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | 25° contact angle, optimized for high axial load capacity. |
| DTP | Indicates a double row design and that the bearing is preloaded for high rigidity and precise operation. |
| HC | Refers to the phenolic resin cage, which is lightweight and suitable for high-speed applications. |
| P4 | Specifies the P4 (ABEC-7) tolerance class, denoting very high running accuracy. |
| Sealed | Integrated seals protect against contamination and retain lubrication, enhancing service life. |
S71908 ACDTP/HCP4B Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The double row angular contact design, combined with a factory-set preload, provides exceptional system stiffness and minimizes axial and radial deflection under load, which is critical for maintaining precision.
- Superior Load Capacity: Engineered to handle significant combined loads. The 25° contact angle effectively manages thrust loads in both directions while supporting substantial radial loads.
- Optimized High-Speed Performance: The combination of a lightweight phenolic cage and ceramic balls reduces centrifugal forces, lowers operating temperature, and allows for the high limiting speed of 24,000 rpm.
- Enhanced Durability and Low Maintenance: The sealed construction effectively shields the bearing from contaminants. Pre-lubrication ensures consistent performance and contributes to a long, maintenance-free service interval.
S71908 ACDTP/HCP4B Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Motors and Spindles
- Precision Grinding Equipment
- Medical and Dental Handpieces
- Aerospace Actuators and Control Systems
