71826 CD/P4DGA
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71826 CD/P4DGA
Basic Information
System of measurement
Metric
Weight
1.54 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
130 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
165 mm
Outside diameter tolerance
-0.004mm to 0
Width
36 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
35
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
14332 lbf
Radial static load rating
23850 lbf
Limiting speed
11 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
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71826 CD/P4DGA Bearing Product Overview & Core Advantages
The 71826 CD/P4DGA is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4 tolerance class, this metric bearing excels in high-speed scenarios while accommodating combined radial and axial loads. Its universal matchable (SU) design allows for flexible mounting in pairs to achieve optimal preload and system stiffness. The combination of a phenolic cage and a 15° contact angle ensures smooth operation at limiting speeds up to 11,000 rpm, making it an ideal choice for high-performance spindles and precision machinery.
Model Code Breakdown
| Suffix Code | Technical Meaning |
|---|---|
| CD | Indicates a universal matchable bearing designed with a specific contact angle and internal clearance for pairing (SU arrangement). |
| P4 | Denotes a high-precision tolerance class with extremely tight dimensional and running accuracy tolerances. |
| DGA | Signifies the bearing is lubricated with a specific high-performance grease suitable for the designated temperature range. |
71826 CD/P4DGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and universal matching (SU) capability enable the bearing to be paired for back-to-back or face-to-face arrangements, significantly increasing system rigidity. It supports substantial combined loads with a dynamic load rating of 14,332 lbf and a static load rating of 23,850 lbf.
- Superior High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, while the 15° contact angle and optimized internal geometry contribute to stable operation at high rotational speeds, achieving a limiting speed of 11,000 rpm.
- Precision Engineering: Manufactured to P4 tolerance class with tight bore, outer diameter, and width tolerances, this bearing ensures minimal runout and vibration for applications requiring extreme accuracy.
- Optimized for Preload: The extra light preload (Class A) and universal match design allow for precise control over bearing preload in mounted pairs, reducing deflection and enhancing positional accuracy.
71826 CD/P4DGA Bearing Typical Application Areas
This super-precision bearing is ideally suited for high-demand applications, including:
- Machine Tool Spindles for milling, grinding, and turning centers
- High-frequency Precision Spindles
- High-Speed Machining Centers
- Precision rotary tables and indexing heads
- Other industrial machinery requiring high rigidity and exceptional rotational accuracy
