71913 ACB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71913 ACB/HCP4A
Basic Information
System of measurement
Metric
Weight
0.19 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
65 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.008mm to 0
Width
13 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
32
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
2239 lbf
Radial static load rating
1980 lbf
Limiting speed
34 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:
$ 600.33
/ each
In Stock
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71913 ACB/HCP4A Bearing Product Overview & Core Advantages
The 71913 ACB/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. This single-row bearing features a 25° contact angle and is supplied with a preload, making it ideally suited for managing combined loads where high axial stiffness is critical. Its construction with ceramic balls and a phenolic cage contributes to superior high-speed performance, reduced weight, and extended service life. This bearing is designed for high-reliability scenarios in precision machinery.
71913 ACB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 71913 ACB/HCP4A provides specific technical details:
- 71913: Basic series designation, indicating a metric, single-row angular contact ball bearing with a 65mm bore, 90mm OD, and 13mm width.
- ACB: Signifies a specific internal design and contact angle of 25°.
- HCP4A: Denotes the P4 (ABEC-7) tolerance class and a specific preload grade ("A"), ensuring ultra-precise running accuracy and optimal rigidity.
71913 ACB/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The 25° contact angle and applied preload provide high axial stiffness and precise shaft positioning, minimizing deflection under load.
- Superior High-Speed Capability: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage allows for a very high limiting speed of 34,000 rpm.
- Excellent Load Capacity: Designed to handle significant combined radial and axial loads simultaneously, with a dynamic load rating of 2239 lbf and a static load rating of 1980 lbf.
- Optimized for Performance: The open seal type facilitates optimal lubrication flow for high-speed operation, while the specified temperature range of -30° to 110 °C ensures stable performance.
71913 ACB/HCP4A Bearing Typical Application Areas
This precision bearing is ideally deployed in:
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- High-Speed Motors and Pumps
- Aerospace Instrumentation
