71805 CDGB/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71805 CDGB/P4
Basic Information
System of measurement
Metric
Weight
0.021 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
25 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
37 mm
Outside diameter tolerance
-0.004mm to 0
Width
7 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.175 mm
Ball quantity
20
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
936 lbf
Radial static load rating
720 lbf
Limiting speed
103 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
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
In Stock
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71805 CDGB/P4 Bearing Product Overview & Core Advantages
The 71805 CDGB/P4 is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. Operating under the P4 tolerance class, it delivers superior running precision. Its 15° contact angle is optimized to handle combined loads, efficiently supporting both radial and axial forces. The bearing is pre-lubricated and features a universal matchable (SU) design, allowing bearings to be mounted in any combination to achieve specific preload levels, making it ideal for high-speed spindles and other precision machinery.
71805 CDGB/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71805 | Basic bearing designation, indicating a metric, ultra-light series bearing with a 25 mm bore. |
| C | Specifies a 15° contact angle. |
| DG | Indicates a Universal Matchable (SU) bearing. Two bearings can be mounted in a back-to-back (DB), face-to-face (DF), or tandem (DT) arrangement. |
| B | Denotes a Light Preload / Class B. |
| /P4 | Specifies the high-precision tolerance class, superior to ABEC-7. |
71805 CDGB/P4 Bearing Structural Features & Performance Benefits
- High Precision and Rigidity: Manufactured to P4 tolerance class with tight dimensional control, this bearing ensures minimal runout and high system rigidity. The phenolic resin cage contributes to smooth operation at high speeds with low inertia.
- Superior Load Capacity: The angular contact design with a 15° contact angle is engineered to handle significant combined radial and axial loads simultaneously.
- Optimized for High Speeds: The lightweight phenolic cage and precision-ground chrome steel balls enable a high limiting speed of 103,000 rpm, making it a true high-speed bearing.
- Universal Matching & Simplified Assembly: The Universal Matchable (SU) feature allows for flexible mounting configurations (DB, DF, DT) without selective assembly, simplifying installation and ensuring consistent preload.
71805 CDGB/P4 Bearing Typical Application Areas
This precision bearing is ideally suited for demanding applications where high speed, accuracy, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices and laboratory equipment.
- High-Frequency Motors and Spindles: PCB drilling spindles and dental handpieces.
- Robotics: High-accuracy joints and arm assemblies.
