71819 CDGB/P4
71800 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71819 CDGB/P4
Basic Information
System of measurement
Metric
Weight
0.29 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
95 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
120 mm
Outside diameter tolerance
-0.004mm to 0
Width
13 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
32
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4972 lbf
Radial static load rating
6188 lbf
Limiting speed
15 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
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In Stock
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71819 CDGB/P4 Bearing Product Overview & Core Advantages
The 71819 CDGB/P4 is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered with a P4 tolerance class and a 15° contact angle, this bearing excels at supporting combined loads, managing both radial forces and substantial axial loads in one direction. Its compact design, featuring a 13 mm width, makes it ideal for space-constrained, high-speed spindles and precision machinery. The light preload (Class B) ensures smooth, quiet operation with minimal deflection, contributing to superior system rigidity and positional accuracy.
71819 CDGB/P4 Bearing Model Code Explained, Specifications & Naming Convention
The model number 71819 CDGB/P4 provides detailed technical specifications:
- 71819: Basic bearing series, indicating a metric, angular contact design with a 95mm bore and 120mm outside diameter.
- C: Denotes a 15° contact angle, optimized for high-speed operation and moderate axial load capacity.
- D: Indicates the bearing is filled with a phenolic (polyamide) cage.
- GB: Signifies a Light Preload / Class B.
- P4: Represents the tolerance class, corresponding to ISO Class 4 (ABEC 7) precision, ensuring extremely tight dimensional and running accuracy.
71819 CDGB/P4 Bearing Structural Features & Performance Benefits
- High Precision and Rigidity: Manufactured to P4 tolerance standards, this bearing guarantees minimal runout and vibration, which is critical for maintaining precision in machining and positioning applications. The light preload eliminates internal clearance, enhancing system stiffness and rotational accuracy.
- Superior Load Capacity: With a dynamic load rating of 4972 lbf and a static load rating of 6188 lbf, it reliably handles significant combined radial and axial loads.
- Optimized High-Speed Performance: The lightweight phenolic cage and 15° contact angle are engineered for stable operation at high rotational speeds, with a limiting speed of 15,000 rpm. The open design allows for efficient lubrication management.
- Universal Matching Capability (SU): Designed as a Universal Matchable bearing, two identical 71819 CDGB/P4 bearings can be universally paired in a back-to-back (DB) or face-to-face (DF) arrangement to support axial loads in both directions, offering exceptional design flexibility.
71819 CDGB/P4 Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and other high-RPM electric motors.
- Medical and Laboratory Equipment: Centrifuges and precision rotary devices.
