71826 CD/P4DBB
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71826 CD/P4DBB
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
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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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71826 CD/P4DBB Bearing Product Overview & Core Advantages
The 71826 CD/P4DBB is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This back-to-back (DB) matched pair is preloaded to Light / Class B specifications, ensuring optimal stiffness and minimal axial/radial runout. Its primary advantage lies in its ability to handle combined loads (radial and axial) simultaneously while maintaining high performance in high-speed and high-precision environments. Manufactured to P4 tolerance class, it is ideal for machine tool spindles and other demanding applications.
71826 CD/P4DBB Bearing Model Code Explained, Specifications & Naming Convention
| Code | Technical Meaning |
|---|---|
| 71826 | Basic bearing designation (130mm bore, 165mm OD, 36mm width) |
| C | 15° contact angle |
| D | Duplex back-to-back (DB) arrangement |
| P4 | High precision tolerance class (superior running accuracy) |
| DBB | Duplex Back-to-Back preloaded pair (specific mounting configuration) |
71826 CD/P4DBB Bearing Structural Features & Performance Benefits
- High Rigidity & Preload: The duplex back-to-back (DB) arrangement with Light / Class B preload provides exceptional system stiffness, effectively resisting moment loads and minimizing deflection under operational stresses.
- Superior Load Capacity: The 15° contact angle and optimized internal geometry enable the bearing to support significant combined radial and axial loads simultaneously.
- High-Speed Performance: The lightweight phenolic resin cage ensures stable operation and low friction at the high limiting speed of 11,000 rpm, reducing centrifugal forces and heat generation.
- Precision Engineering: Manufactured to P4 tolerance class with tight dimensional control on the bore diameter, outside diameter, and width, guaranteeing smooth, precise, and vibration-free rotation.
- Durable Construction: Components made from chrome steel offer high hardness and wear resistance, ensuring long service life under demanding conditions.
71826 CD/P4DBB Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers.
- High-Frequency Spindles: For PCB drilling and precision engraving.
- Precision Gearboxes: Where high rigidity and accurate shaft positioning are critical.
- Industrial Pumps & Compressors: For high-speed rotor support.
- Medical Equipment: High-speed centrifuges and dental handpieces.
