71800 ACDGB/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71800 ACDGB/P4
Basic Information
System of measurement
Metric
Weight
0.005 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
10 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
19 mm
Outside diameter tolerance
-0.004mm to 0
Width
5 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
2.381 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
400 lbf
Radial static load rating
209 lbf
Limiting speed
95 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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71800 ACDGB/P4 Bearing Product Overview & Core Advantages
The 71800 ACDGB/P4 is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Manufactured to P4 tolerance class, this bearing is engineered to handle combined loads with a 25° contact angle, providing superior axial load capacity in one direction. Its compact design, featuring a 10mm bore and 5mm width, makes it ideal for space-constrained, high-speed assemblies. Pre-lubricated and featuring a phenolic cage, it offers reliable performance right out of the box.
71800 ACDGB/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71800 | Basic bearing series, indicating a metric, single-row angular contact design with a 10mm bore. |
| AC | Angular Contact design with a 25° contact angle. |
| DGB | Universal Matchable (SU) bearing. Two bearings can be mounted in a back-to-back (DB) arrangement to support combined loads and moment loads. |
| P4 | Indicates a high-precision tolerance class with extremely tight dimensional and running accuracy tolerances. |
71800 ACDGB/P4 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and optimized internal geometry enable the bearing to support significant combined radial and axial loads. When used in a universal matched pair (back-to-back), the arrangement provides high moment stiffness.
- Precision & High-Speed Performance: Manufactured to P4 tolerance class, this bearing ensures minimal runout and vibration. The lightweight phenolic resin cage is ideal for high-speed applications
- Optimized Internal Design: Features 12 high-grade chrome steel balls of 2.381mm diameter, ensuring smooth operation and long service life under demanding conditions.
- Universal Matchability: The DGB suffix signifies that the bearing is universally matchable. This allows for simplified mounting of two bearings in a pre-loaded set without the need for selective assembly, saving time and cost.
71800 ACDGB/P4 Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for applications demanding high speed, accuracy, and rigidity, including:
- High-Speed Spindles in CNC machining centers and precision grinding machines
- Precision Instrumentation and optical encoders
- Robotics and automation arm joints
- High-Frequency Motors and dental handpieces
