71914 ACE/HCPA9ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71914 ACE/HCPA9ADGA
Basic Information
System of measurement
Metric
Weight
0.55 kg
Tolerance class
PA9A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
70 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
100 mm
Outside diameter tolerance
-0.004mm to 0
Width
32 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
22
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
7605 lbf
Radial static load rating
6862 lbf
Limiting speed
31 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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71914 ACE/HCPA9ADGA Bearing Product Overview & Core Advantages
The 71914 ACE/HCPA9ADGA is a precision angular contact ball bearing engineered for applications demanding exceptional accuracy and high-speed performance. As a universally matchable (SU) bearing supplied in a pre-set pair, it is designed to accommodate combined loads—simultaneously handling radial loads and axial loads in one direction. Its core advantages stem from a ceramic ball and phenolic cage construction, which enables superior high-speed operation, reduced weight, and excellent dimensional stability. Manufactured to the stringent PA9A tolerance class, this bearing delivers the high rigidity and running accuracy required for the most demanding precision machinery.
71914 ACE/HCPA9ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71914 | Basic bearing series and size designation (70mm bore, 100mm OD, 32mm width). |
| ACE | Internal design optimized for high-speed operation and precise running. |
| HC | Hybrid Ceramic: Signifies the use of ceramic balls for reduced friction and higher limiting speeds. |
| PA9A | Tolerance class denoting ultra-high precision for bore, outside diameter, and width. |
| DGA | Universal Matchable (SU): Indicates the bearing is supplied as one of a pair that can be arranged in a universal (face-to-face or back-to-back) configuration. |
71914 ACE/HCPA9ADGA Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends bearing life, making it an ideal high-speed bearing.
- Phenolic Resin Cage: This lightweight and robust cage material contributes to quiet operation, low moment of inertia, and excellent performance at high rotational speeds.
- High Rigidity & Load Capacity: The 25° contact angle and universal matching capability allow for configurations that provide high system rigidity and the ability to handle significant combined loads.
- Ultra-Precision: Conformance to the PA9A tolerance class ensures minimal runout and vibration, which is critical for applications requiring extreme positional accuracy.
- Pre-Lubricated: Comes pre-lubricated for immediate use, suitable for the specified operating temperature range.
71914 ACE/HCPA9ADGA Bearing Typical Application Areas
This high-precision, high-speed bearing is typically specified for:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Instrumentation: In medical devices, optical scanners, and coordinate measuring machines.
- High-Frequency Motors and Spindles: Where low friction and high limiting speeds are paramount.
- Aerospace & Defense Systems: In gyroscopes, radar systems, and other critical rotating assemblies.
