7000 ACD/P4ADBC
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7000 ACD/P4ADBC
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
25 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
9
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1462 lbf
Radial static load rating
720 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
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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7000 ACD/P4ADBC Bearing Product Overview & Core Advantages
The 7000 ACD/P4ADBC is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement provides superior stability and is preloaded to Class C (Moderate), ensuring minimal axial and radial play under operating conditions. Its primary advantage lies in its ability to handle combined loads—significant radial and thrust loads simultaneously—making it ideal for high-precision, high-rigidity applications where positioning accuracy is critical.
7000 ACD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
The model number 7000 ACD/P4ADBC breaks down into specific technical features:
- 7000: Basic series designation for a metric angular contact ball bearing.
- AC: Signifies a 25° contact angle, optimized for carrying combined loads.
- D: Indicates the bearing is part of a duplex (matched pair) set.
- P4A: Denotes a very high tolerance class, ensuring exceptional dimensional and running accuracy.
- DB: Specifies the back-to-back mounting arrangement, which provides high moment rigidity.
- C: Indicates the moderate preload (Class C) applied to the matched set.
7000 ACD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) design creates a wide effective spread, significantly increasing system rigidity and resistance to moment loads, which is crucial for maintaining precision.
- Superior Load Capacity: The 25° contact angle and duplex arrangement enable the bearing to support high combined radial and axial loads from both directions.
- Precision Performance: Manufactured to P4A tolerance class, this bearing guarantees extremely tight dimensional control and low runout, essential for high-speed, high-accuracy applications.
- Optimized for Speed: The lightweight phenolic resin cage ensures smooth operation and contributes to the high limiting speed of 95,000 rpm, reducing centrifugal forces and friction.
- Durable Construction: Components made from chrome steel provide high hardness, wear resistance, and a long operational life under demanding conditions.
7000 ACD/P4ADBC Bearing Typical Application Areas
This precision bearing is engineered for use in high-performance machinery and systems, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme accuracy and rigidity.
- Precision Gearboxes: In applications where low noise, high speed, and precise shaft positioning are mandatory.
- High-Frequency Spindles: Used in PCB drilling, engraving, and other high-RPM machining operations.
- Medical and Laboratory Equipment: For centrifuges, scanners, and other devices demanding quiet, precise, and reliable rotation.
- Robotic Arms and Actuators: Providing the necessary stiffness and load capacity for precise joint movement.
