71830 CD/P4DGC
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71830 CD/P4DGC
Basic Information
System of measurement
Metric
Weight
2.2 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
150 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
190 mm
Outside diameter tolerance
-0.004mm to 0
Width
40 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
35
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
18720 lbf
Radial static load rating
32850 lbf
Limiting speed
11 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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71830 CD/P4DGC Bearing Product Overview & Core Advantages
The 71830 CD/P4DGC is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4 tolerance class, it offers superior dimensional stability and running accuracy. Its universal matchable (SU) design allows for flexible mounting in various preload configurations, while the moderate preload (Class C) ensures optimal stiffness and minimal deflection under combined loads. This bearing is pre-lubricated for immediate operation and is engineered to deliver reliable performance in high-speed, high-precision environments.
71830 CD/P4DGC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Indicates a universal matchable bearing designed with a specific contact angle and internal geometry for duplex mounting. This allows for various preload arrangements (back-to-back, face-to-face, or tandem). |
| P4 | Denotes the tolerance class, signifying very high precision levels for bore diameter, outer diameter, and width, ensuring superior running accuracy. |
| DGC | Specifies the combination of a phenolic cage and a moderate preload (Class C). The phenolic cage contributes to high-speed capability and reduced friction. |
71830 CD/P4DGC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 15° contact angle and universal matchable (SU) design enable the bearing to support significant combined radial and axial loads. When mounted in pairs, the arrangement provides high system rigidity, critical for minimizing shaft deflection.
- High-Speed Performance: The lightweight phenolic cage is engineered for stability at high rotational speeds, reducing centrifugal forces and friction. This, combined with the optimized internal geometry, supports a limiting speed of 11,000 rpm.
- Precision Engineering: Manufactured to P4 tolerance class with tight dimensional tolerances, this bearing ensures precise shaft positioning, low vibration, and smooth operation, which is essential for high-precision machinery.
- Ready-to-Use: The bearing comes pre-lubricated, facilitating immediate installation and initial operation without the need for additional lubrication steps.
71830 CD/P4DGC Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring exceptional accuracy and rigidity.
- High-Speed Machining Centers: Applications where high rotational speeds and minimal runout are critical.
- Precision Gearboxes: Used in transmissions and gearboxes that demand high load capacity and precise shaft alignment.
- Industrial Pumps and Compressors: For supporting shafts subject to combined loads in demanding fluid handling equipment.
