71911 ACDTP/HCP4B
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71911 ACDTP/HCP4B
Basic Information
System of measurement
Metric
Weight
0.15 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
80 mm
Outside diameter tolerance
-0.007mm to 0
Width
13 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
23
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
4095 lbf
Radial static load rating
3082 lbf
Limiting speed
17 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:
$ 478.98
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71911 ACDTP/HCP4B Bearing Product Overview & Core Advantages
The 71911 ACDTP/HCP4B is a single-row angular contact ball bearing engineered for high-precision applications demanding exceptional rotational accuracy and rigidity. This metric bearing features a 25° contact angle and is supplied with a preload, enabling it to handle significant combined loads (radial and axial) simultaneously. Manufactured to the stringent P4 (ABEC-7) tolerance class, it guarantees minimal runout and superior performance. The use of a phenolic cage and ceramic balls contributes to its high limiting speed of 17,000 rpm, low heat generation, and extended service life, making it ideal for high-speed spindles and precision machinery.
71911 ACDTP/HCP4B Bearing Model Code Explained, Specifications & Naming Convention
The model number 71911 ACDTP/HCP4B provides detailed technical specifications through its suffixes:
- 71911: Basic model number denoting a single-row angular contact ball bearing with a 55 mm bore, 80 mm OD, and 13 mm width.
- AC: Angular Contact design with a 25° contact angle.
- D: Indicates a high-precision design.
- TP: Signifies the Phenolic (synthetic resin) cage, which is lightweight and suitable for high speeds.
- HC: Denotes the use of Hybrid Ceramic balls (steel rings with ceramic balls).
- P4B: Specifies the tolerance class P4 (ABEC-7) with enhanced running accuracy.
71911 ACDTP/HCP4B Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The P4 tolerance class and preload ensure minimal deflection and precise shaft positioning, providing high rigidity for demanding applications.
- Superior Load Capacity: The 25° contact angle is optimized to handle substantial combined radial and axial loads efficiently.
- Exceptional High-Speed Performance: The combination of a lightweight phenolic cage and low-friction ceramic balls significantly reduces centrifugal forces and operating temperature, enabling a high limiting speed.
- Enhanced Durability and Longevity: Ceramic balls offer superior wear resistance, lower density, and electrical insulation properties, leading to a longer operational life, especially in high-speed and critical environments.
- Wide Operating Temperature Range: The phenolic cage and standard lubrication allow for reliable operation within a temperature range of -30°C to 110°C.
71911 ACDTP/HCP4B Bearing Typical Application Areas
This high-precision angular contact ball bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors and Spindles: Where low vibration and high rotational accuracy are critical.
- Aerospace and Defense Systems: Gyroscopes, radar equipment, and navigation systems.
- Medical Equipment: Dental handpieces and high-speed centrifuges.
