7007 ACD/HCP4ADBC
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7007 ACD/HCP4ADBC
Basic Information
System of measurement
Metric
Weight
0.27 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
35 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
62 mm
Outside diameter tolerance
-0.004mm to 0
Width
28 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
16
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
5445 lbf
Radial static load rating
4050 lbf
Limiting speed
100.5 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
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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7007 ACD/HCP4ADBC Bearing Product Overview & Core Advantages
The 7007 ACD/HCP4ADBC is a precision duplex angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This matched back-to-back (DB) arrangement is preloaded to provide high rigidity and superior running accuracy, making it ideal for supporting combined loads (radial and axial) in both directions. The use of ceramic balls and a P4A super-precision tolerance class ensures outstanding performance in high-speed and high-precision scenarios. Its compact design integrates the functionality of two bearings into a single, ready-to-install unit.
7007 ACD/HCP4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle. |
| D | Duplex (two bearings in a set). |
| HC | Hybrid Ceramic, indicating the balls are made of ceramic material. |
| P4A | Super Precision Tolerance Class, exceeding normal P4 standards for enhanced running accuracy. |
| DB | Back-to-Back mounting arrangement. |
| C | Moderate Preload (Class C). |
7007 ACD/HCP4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement with a moderate preload (Class C) creates a highly rigid bearing system that effectively resists moment loads and shaft deflection, ensuring exceptional positional accuracy.
- Superior High-Speed Performance: The combination of ceramic balls (lighter than steel, reducing centrifugal force) and a lightweight, robust phenolic cage allows for a very high limiting speed of 100,500 rpm. This makes it an excellent high-speed bearing.
- Enhanced Durability & Temperature Resistance: Hybrid ceramic construction provides increased durability, reduced wear, and the ability to operate effectively within a wide temperature range (-30°C to 110°C). The phenolic cage offers good dimensional stability at high speeds.
- Precision & Load Capacity: Manufactured to P4A super-precision tolerances, this bearing delivers minimal runout and smooth operation. It is capable of handling significant radial dynamic (5445 lbf) and static loads (4050 lbf).
7007 ACD/HCP4ADBC Bearing Typical Application Areas
This bearing is engineered for the most demanding applications, including:
- Machine Tool Spindles: For high-precision milling, grinding, and turning centers requiring extreme rigidity and speed.
- High-Frequency Spindles: In PCB drilling and routing machines.
- Precision Instrumentation: Such as coordinate measuring machines (CMM) and optical scanners.
- Advanced Robotics: In high-accuracy robotic arm joints and actuators.
