71919 ACE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71919 ACE/HCP4A
Basic Information
System of measurement
Metric
Weight
0.48 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
95 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
130 mm
Outside diameter tolerance
-0.009mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
25
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
6548 lbf
Radial static load rating
5400 lbf
Limiting speed
23 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:
$ 1200.2
/ each
In Stock
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71919 ACE/HCP4A Bearing Product Overview & Core Advantages
The 71919 ACE/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and reliability. This single-row bearing is distinguished by its 25° contact angle and P4 (ABEC-7) tolerance class, making it ideal for high-speed spindles and precision machinery. Its core advantages include the ability to accommodate significant combined loads (radial and axial), high operational speeds enabled by its phenolic cage and ceramic balls, and consistent performance across a wide temperature range. The bearing is supplied pre-lubricated and is available with a preload for enhanced system rigidity.
71919 ACE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71919 | Basic bearing series and size designation (95mm bore, 130mm OD, 18mm width). |
| ACE | Internal design code, typically indicating a 25° contact angle and optimized internal geometry for high-speed performance. |
| HC | Denotes the use of Hybrid Ceramic balls (Silicon Nitride). |
| P4 | Specifies the tolerance class equivalent to ABEC-7, ensuring extremely tight dimensional and running accuracy. |
| A | Indicates that the bearing is supplied with a specific preload for immediate high-rigidity operation. |
71919 ACE/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The use of ceramic balls with a steel ring significantly reduces centrifugal forces, lowers operating temperature, and extends bearing life, especially at high speeds. This construction also provides superior resistance to electrical erosion.
- Phenolic Cage: The lightweight and robust phenolic resin cage contributes to the bearing's high limiting speed (23,000 rpm) by reducing inertia and providing excellent guidance for the rolling elements.
- High-Precision & Preload: Manufactured to P4 tolerance, this bearing ensures minimal runout and vibration. The supplied preload eliminates internal clearance, resulting in greater system rigidity and precise shaft positioning.
- Superior Load Capacity: The 25° contact angle is optimized to handle substantial axial loads in one direction while simultaneously supporting radial loads, making it suitable for combined load applications.
- Wide Temperature Range: The bearing's construction and lubrication allow for reliable operation from -30°C to 110°C.
71919 ACE/HCP4A Bearing Typical Application Areas
This high-precision angular contact ball bearing is ideally suited for applications where speed, accuracy, and rigidity are paramount.
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary tables.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units (APUs).
- High-Speed Motors and Drives: Electric spindles and servo motors.
- Medical Equipment: Dental handpieces and laboratory centrifuges.
