71830 CDGC/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71830 CDGC/P4
Basic Information
System of measurement
Metric
Weight
1.1 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
20 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
11700 lbf
Radial static load rating
16200 lbf
Limiting speed
11 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
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In Stock
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71830 CDGC/P4 Bearing Product Overview & Core Advantages
The 71830 CDGC/P4 is a single row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Engineered to P4 tolerance class, this bearing delivers superior running accuracy, making it ideal for demanding applications. Its 15° contact angle is optimized to handle significant axial loads in one direction while supporting radial loads, offering a compact and efficient solution for high-speed spindles and precision machinery. The phenolic cage and universal matching (SU) capability further enhance its performance and versatility in complex arrangements.
71830 CDGC/P4 Bearing Model Code Explained, Specifications & Naming Convention
The model number 71830 CDGC/P4 provides detailed technical specifications:
- 71830: Basic bearing designation indicating a metric, single row angular contact ball bearing with 150mm bore, 190mm OD, and 20mm width.
- C: Denotes a 15° contact angle, optimized for high-speed applications with moderate axial load capacity.
- D: Indicates the bearing is supplied as a Universal Matchable (SU) set, allowing for precise preload control when mounted in pairs.
- GC: Specifies a Moderate Preload / Class C when the bearings are mounted as a universal duplex pair.
- P4: Identifies the tolerance class, signifying superior dimensional and running accuracy beyond standard ABEC-7 levels.
71830 CDGC/P4 Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4 tolerance class with tight dimensional tolerances on bore, outside diameter, and width, ensuring minimal runout and vibration for superior machine tool accuracy.
- Optimized Load Capacity: The 15° contact angle and robust chrome steel construction provide an excellent balance, capable of handling combined radial and axial loads efficiently.
- High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, enabling a high limiting speed of 11,000 rpm. This makes it suitable for demanding spindle applications.
- Universal Matching (SU): Bearings are universally matchable, allowing for flexible mounting in back-to-back, face-to-face, or tandem arrangements to achieve specific preload and stiffness characteristics.
- Pre-Lubricated & Durable: Comes pre-lubricated for immediate operation and features components made from high-grade chrome steel for extended service life under demanding conditions.
71830 CDGC/P4 Bearing Typical Application Areas
This high-precision bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications requiring extreme rotational accuracy and rigidity.
- High-Frequency Motors and High-Speed Drives.
- Industrial Pumps and Compressors operating at high rotational speeds.
