71936 ACD/HCP4ATGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71936 ACD/HCP4ATGA
Basic Information
System of measurement
Metric
Weight
10.4 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
180 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
250 mm
Outside diameter tolerance
-0.004mm to 0
Width
99 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
22.225 mm
Ball quantity
27
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
77625 lbf
Radial static load rating
135000 lbf
Limiting speed
16.25 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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71936 ACD/HCP4ATGA Bearing Product Overview & Core Advantages
The 71936 ACD/HCP4ATGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered to accommodate combined loads, it simultaneously handles significant radial and axial forces. Its P4A tolerance class and ceramic ball construction make it ideal for high-speed, high-rigidity applications. The bearing is supplied pre-lubricated and is part of a universally matchable (SU) set, allowing for flexible mounting configurations to achieve optimal preload and stiffness.
71936 ACD/HCP4ATGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71936 | Basic bearing series and size designation. |
| AC | 25° contact angle. |
| D | Enhanced internal design for high stiffness and load capacity. |
| HC | Hybrid Ceramic construction (ceramic balls with steel rings). |
| P4A | High precision tolerance class (exceeds ABEC 7/ISO P4). |
| TGA | Phenolic (Textolite) cage, general purpose design. |
71936 ACD/HCP4ATGA Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design and robust construction provide superior stiffness, enabling it to handle high combined loads (radial and axial) effectively.
- High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage allows for a high limiting speed of 16,250 rpm.
- Precision Operation: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for precision applications.
- Universal Matchability (SU): Bearings are universally matchable in sets of three, allowing engineers to create duplex or triplex arrangements (DB, DF, DT) to achieve specific preload and stiffness characteristics without selective mounting.
- Extended Service Life: The hybrid ceramic design offers improved durability, reduced wear, and the capability to operate in a wide temperature range from -30°C to 110°C.
71936 ACD/HCP4ATGA Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance machinery, including:
- Machine Tool Spindles
- High-Speed Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace and Defense Systems
