71804 CD/P4DGA
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71804 CD/P4DGA
Basic Information
System of measurement
Metric
Weight
0.036 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
20 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
32 mm
Outside diameter tolerance
-0.004mm to 0
Width
14 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.175 mm
Ball quantity
17
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1404 lbf
Radial static load rating
1192 lbf
Limiting speed
100.5 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
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
Price available upon request.
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71804 CD/P4DGA Bearing Product Overview & Core Advantages
The 71804 CD/P4DGA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. As a universal matchable (SU) bearing supplied in a pre-lubricated, matched pair, it delivers superior rigidity and can accommodate combined radial and axial loads. Manufactured to P4 tolerance class, it ensures minimal runout and vibration, making it ideal for high-precision, high-reliability machinery where uncompromising performance is critical.
71804 CD/P4DGA Bearing Model Code Explained, Specifications & Naming Convention
The model number 71804 CD/P4DGA is decoded as follows:
- 71804: Basic designation for a metric, ultra-light series angular contact ball bearing.
- C: Signifies a 15° contact angle, optimized for high-speed operation.
- D: Indicates the bearing is supplied as part of a universally matchable (DU) pair.
- P4: Denotes a high precision tolerance class with extremely tight dimensional and running accuracy.
- DGA: Indicates the bearing is pre-lubricated and the two bearings in the set are universally matchable (SU) for flexible mounting configurations (face-to-face or back-to-back).
71804 CD/P4DGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The universal matched pair (SU) arrangement creates a pre-loaded set, significantly increasing system rigidity and enabling the bearing to handle substantial combined loads (radial and axial) from both directions.
- Superior High-Speed Performance: The 15° contact angle and lightweight phenolic resin cage minimize centrifugal forces and friction, allowing for a high limiting speed of 100,500 rpm. This makes it an excellent high-speed bearing.
- Precision & Accuracy: Manufactured to P4 tolerance class with a bore diameter tolerance of -0.004mm to 0, this bearing guarantees precise shaft positioning and smooth, quiet operation.
- Optimized for Performance: The combination of chrome steel rings and balls provides high durability and fatigue resistance. The bearing is pre-lubricated for immediate use and reliable operation within its specified temperature range.
71804 CD/P4DGA Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Medical and Dental Handpieces
- Aerospace Instrumentation
