71802 ACD/P4DGC
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71802 ACD/P4DGC
Basic Information
System of measurement
Metric
Weight
0.014 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
15 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
24 mm
Outside diameter tolerance
-0.004mm to 0
Width
10 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
2.381 mm
Ball quantity
17
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
790 lbf
Radial static load rating
630 lbf
Limiting speed
95 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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71802 ACD/P4DGC Bearing Product Overview & Core Advantages
The 71802 ACD/P4DGC is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing supplied in a preloaded pair (DB arrangement), it is engineered to accommodate combined loads (radial and axial) simultaneously. Its P4 tolerance class and moderate preload (Class C) ensure high running accuracy and stability, making it ideal for high-speed spindles and other precision machinery where minimal runout and high system rigidity are critical.
71802 ACD/P4DGC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71802 | Basic bearing series, defining the internal geometry and size (15mm bore, 24mm OD, 10mm width). |
| AC | Angular Contact design with a 25° contact angle, optimized for combined loads. |
| D | Signifies two bearings supplied as a universal matchable (SU) set in a back-to-back (DB) arrangement. |
| P4 | Indicates a high-precision tolerance class for superior running accuracy. |
| DGC | Specifies a moderate preload (Class C) applied to the bearing pair, enhancing system stiffness. |
71802 ACD/P4DGC Bearing Structural Features & Performance Benefits
- High Rigidity & System Stability: The universal matchable (SU) design allows two bearings to be paired in a back-to-back (DB) arrangement. This configuration, combined with the moderate preload (Class C), creates a highly rigid bearing system that effectively resists moment loads and minimizes axial and radial deflection under operation.
- Superior Load Capacity: The 25° contact angle is optimized to handle significant combined radial and axial loads simultaneously, a common requirement in precision applications.
- High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, while the open design and factory-applied lubrication enable a high limiting speed of 95,000 rpm, making it suitable for high-speed spindles.
- Precision Performance: Manufactured to P4 tolerance standards, this bearing ensures extremely low runout and vibration, which is critical for achieving high surface finishes and machining accuracy.
71802 ACD/P4DGC Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Drilling & Boring Spindles
- High-Frequency Motors
- Robotic Arm Joints & Precision Gearboxes
