7000 CD/P4ADBA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7000 CD/P4ADBA
Basic Information
System of measurement
Metric
Weight
0.038 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
10 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
26 mm
Outside diameter tolerance
-0.004mm to 0
Width
16 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
9
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1492 lbf
Radial static load rating
731 lbf
Limiting speed
185 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
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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7000 CD/P4ADBA Bearing Product Overview & Core Advantages
The 7000 CD/P4ADBA is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. As part of a matched duplex set in a back-to-back (DB) arrangement, this bearing is engineered to handle combined radial and axial loads simultaneously. Its P4A tolerance class ensures ultra-precise running accuracy, making it ideal for high-speed spindles and other precision machinery. The extra light preload (Class A) minimizes deflection under load, contributing to superior system rigidity and positioning accuracy.
7000 CD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7000 CD/P4ADBA provides detailed technical specifications:
- 7000: Basic series designation for a metric angular contact ball bearing.
- C: Indicates a 15° contact angle, optimized for high axial load capacity.
- D: Signifies the bearing is one of a pair in a Duplex Back-to-Back (DB) matched set.
- P4A: Denotes an extremely high tolerance class, specifying very tight dimensional and running accuracy limits.
- Open: The bearing is supplied without seals or shields, allowing for optimized lubrication schemes in clean environments.
- Lubricated: The bearing is pre-lubricated from the factory for immediate operation.
7000 CD/P4ADBA Bearing Structural Features & Performance Benefits
The design of the 7000 CD/P4ADBA delivers distinct performance advantages:
- High Rigidity & Accuracy: The duplex back-to-back (DB) arrangement of two bearings provides a wide effective spread, significantly increasing moment stiffness and operational stability, which is critical for precision applications.
- Superior Load Capacity: The 15° contact angle is engineered to efficiently support substantial combined loads (radial and axial). The dynamic load rating of 1492 lbf confirms its durability under demanding conditions.
- High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, while the open design facilitates efficient lubrication. This combination enables a high limiting speed of 185,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with tight bore, outer diameter, and width tolerances, this bearing ensures minimal runout and consistent, predictable performance.
7000 CD/P4ADBA Bearing Typical Application Areas
This high-precision, high-speed bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and other high-RPM applications.
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges.
- Robotics: Precision joints and arm assemblies requiring high rigidity and accuracy.
