71936 ACD/P4ADGB
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71936 ACD/P4ADGB
Basic Information
System of measurement
Metric
Weight
8.4 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
66 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
58500 lbf
Radial static load rating
90000 lbf
Limiting speed
16.25 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 2081.64
/ each
In Stock
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71936 ACD/P4ADGB Bearing Product Overview & Core Advantages
The 71936 ACD/P4ADGB is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing supplied in a pre-loaded pair, it excels at handling combined radial and axial loads simultaneously. Manufactured to the stringent P4A tolerance class, it delivers superior running accuracy, making it ideal for high-speed spindles and other precision machinery where reliability and performance are critical.
71936 ACD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Interpretation | Technical Significance |
|---|---|---|
| 71936 | Basic Designation | Denotes a double row angular contact ball bearing with specific internal geometry. |
| ACD | Contact Angle & Design | Indicates a 25° contact angle and optimized internal design for high axial load capacity. |
| P4A | Tolerance Class | Signifies high precision with very tight dimensional and running accuracy tolerances. |
| DGB | Universal Matching & Preload | Identifies the bearing as Universal Matchable (SU) and supplied as a pre-loaded pair (Light / Class B) for immediate installation. |
71936 ACD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The double row design provides superior radial and axial rigidity, enabling the bearing to withstand significant combined loads. The 25° contact angle is optimized for high axial load carrying capability.
- Precision Performance: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is essential for applications requiring high rotational accuracy.
- Optimized High-Speed Operation: The lightweight phenolic resin cage minimizes centrifugal forces, contributing to a high limiting speed of 16,250 rpm. The open design facilitates efficient lubrication management.
- Universal Matchability (SU): This feature allows any two bearings to be mounted together in a back-to-back (DB), face-to-face (DF), or tandem (DT) arrangement without selective assembly, offering exceptional design flexibility.
- Premium Materials: Constructed from chrome steel for both rings and balls, the bearing ensures high durability, wear resistance, and a long operational life under demanding conditions.
71936 ACD/P4ADGB Bearing Typical Application Areas
The 71936 ACD/P4ADGB is engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes: Industrial transmissions requiring high accuracy and rigidity.
- High-Frequency Motors and Spindles: Applications where minimal vibration and high rotational speeds are critical.
- Industrial Pumps and Compressors: For handling significant axial and radial loads reliably.
