71828 ACDGA/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71828 ACDGA/P4
Basic Information
System of measurement
Metric
Weight
0.8 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
140 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
175 mm
Outside diameter tolerance
-0.004mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
10.319 mm
Ball quantity
35
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
9518 lbf
Radial static load rating
13162 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
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
Price:
$ 409.5
/ each
In Stock
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71828 ACDGA/P4 Bearing Product Overview & Core Advantages
The 71828 ACDGA/P4 is a single-row angular contact ball bearing designed for applications demanding high precision and superior performance. Manufactured to P4 tolerance class, it delivers exceptional running accuracy. Its 25° contact angle is optimized to handle significant axial loads in one direction, making it ideal for high-speed operations with a limiting speed of 11,000 rpm. The bearing comes prelubricated and features an open seal type for versatile application needs. Its compact design, with an 18 mm width, provides a high load capacity in a minimal space.
71828 ACDGA/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design, enabling the bearing to support combined loads. |
| DGA | Indicates a specific internal design and Universal Matchable (SU) designation. This means two identical bearings can be universally matched in a back-to-back (DB) or face-to-face (DF) arrangement to support axial loads in both directions. |
| P4 | Denotes a high-precision tolerance class with extremely tight dimensional and running accuracy tolerances, superior to standard ABEC-7. |
71828 ACDGA/P4 Bearing Structural Features & Performance Benefits
- High-Precision Construction: Manufactured to P4 tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional running accuracy and system stability for demanding applications.
- Optimized Load Capacity: The 25° contact angle and robust construction using chrome steel for rings and balls provide a high dynamic load rating of 9518 lbf and static load rating of 13162 lbf, enabling reliable performance under significant axial and radial loads.
- High-Speed Performance: The lightweight phenolic resin cage and optimized internal geometry contribute to low friction and a high limiting speed of 11,000 rpm, making it suitable for spindle applications.
- Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be paired with another identical bearing to form a matched set, creating a pre-loaded arrangement that increases system rigidity and handles bidirectional axial loads.
71828 ACDGA/P4 Bearing Typical Application Areas
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Aerospace Control Systems
- Medical and Dental Equipment
- High-Speed Pumps and Compressors
