71802 CD/P4DBB
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71802 CD/P4DBB
Basic Information
System of measurement
Metric
Weight
0.014 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
15 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
24 mm
Outside diameter tolerance
-0.004mm to 0
Width
10 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
2.381 mm
Ball quantity
17
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
835 lbf
Radial static load rating
675 lbf
Limiting speed
95 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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71802 CD/P4DBB Bearing Product Overview & Core Advantages
The 71802 CD/P4DBB is a precision duplex angular contact ball bearing specifically designed for applications demanding exceptional rotational accuracy and rigidity. This matched pair, arranged in a Back-to-Back (DB) configuration, is preloaded to Light / Class B standards, ensuring minimal axial and radial play for superior system stability. Its primary advantage lies in its ability to handle combined loads—significant radial loads alongside substantial axial loads in both directions—making it an ideal choice for high-precision, high-rigidity spindles and mechanisms. The open design, combined with a phenolic cage, facilitates high-speed operation while maintaining dimensional stability.
71802 CD/P4DBB Bearing Model Code Explained, Specifications & Naming Convention
The model number 71802 CD/P4DBB provides detailed technical specifications:
- 71802: Basic bearing designation indicating a metric, 15mm bore, 24mm OD angular contact ball bearing.
- C: Denotes a 15° contact angle, optimized for high axial load capacity and moderate speed.
- D: Indicates the bearing is part of a duplex pair (two bearings).
- P4: Specifies a high-precision tolerance class, ensuring extremely tight dimensional and running accuracy.
- DB: Defines the Duplex Back-to-Back mounting arrangement, which provides high moment rigidity and excellent stability under complex loads.
71802 CD/P4DBB Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement and light preload create a highly rigid bearing system that effectively resists moment loads and deflection, crucial for maintaining precision under operational stresses.
- Superior Load Capacity: With a 15° contact angle and duplex design, this bearing set excels at supporting combined radial and bidirectional axial loads, offering a dynamic load rating of 835 lbf and a static load rating of 675 lbf.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, enabling a high limiting speed of 95,000 rpm. The open seal design minimizes friction and heat generation.
- Precision Operation: Manufactured to P4 tolerance class with tight bore, outer diameter, and width tolerances, this bearing guarantees minimal runout and vibration for ultra-smooth, accurate rotation.
- Material Integrity: Constructed from chrome steel for both rings and balls, the bearing provides high hardness, wear resistance, and long-term durability.
71802 CD/P4DBB Bearing Typical Application Areas
This precision bearing is engineered for high-performance applications where accuracy and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Medical Equipment: Dental handpieces, laboratory centrifuges, and imaging scanners.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
- High-Frequency Spindles: PCB drilling and routing machines.
