7207 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7207 ACDGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.24 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
72 mm
Outside diameter tolerance
-0.004mm to 0
Width
17 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
13
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
6908 lbf
Radial static load rating
4680 lbf
Limiting speed
41 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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7207 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The 7207 ACDGA/HCP4A is a single-row angular contact ball bearing engineered for applications demanding the highest levels of precision and speed. Designed to accommodate combined loads (radial and axial loads simultaneously), its primary advantages stem from its P4A super-precision tolerance, ceramic ball construction, and phenolic cage. This combination delivers exceptional rotational accuracy, high rigidity, and superior performance in high-speed environments, making it ideal for mission-critical machinery.
7207 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance |
|---|---|---|
| A | 25° Contact Angle | Optimized for carrying significant axial loads in one direction. |
| CDGA | Universal Matchable (SU), Extra Light Preload | Bearing is part of a universally matchable set (3 bearings) that can be mounted in various configurations (back-to-back, face-to-face, tandem) to achieve desired rigidity and load capacity. The extra light preload (Class A) minimizes friction for high-speed operation. |
| HC | Hybrid Ceramic | Features ceramic balls for reduced weight, lower friction, higher speed capability, and non-conductive properties. |
| P4A | Super Precision Tolerance Class | Denotes extremely tight dimensional and running accuracy, ensuring minimal vibration and superior performance in high-precision applications. |
7207 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The use of ceramic balls significantly reduces centrifugal forces and rolling friction, enabling a high limiting speed of 41,000 rpm. This also provides electrical insulation and enhanced durability.
- Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent dimensional stability and guidance at high speeds, contributing to smooth operation and extended service life.
- Super-Precision P4A Tolerance: Manufactured to P4A tolerance class, this bearing guarantees exceptional running accuracy and high rigidity, which is critical for applications requiring minimal runout and vibration.
- Universal Matchability (SU): As part of a matched set, these bearings can be pre-loaded against each other in various arrangements to optimize system stiffness and handle complex combined loads.
- Pre-lubricated for Immediate Use: The bearing comes lubricated and is suitable for a wide operating temperature range from -30°C to 110°C.
7207 ACDGA/HCP4A Bearing Typical Application Areas
This high-performance precision bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and avionics.
- High-Speed Motors and Drives: Where low friction and high rotational accuracy are paramount.
- Medical Equipment: Dental handpieces, centrifuges, and imaging scanners.
