7213 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7213 CD/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
1.76 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
65 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
120 mm
Outside diameter tolerance
-0.004mm to 0
Width
46 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
15
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
24300 lbf
Radial static load rating
23850 lbf
Limiting speed
32.5 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 443.36
/ each
In Stock
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7213 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 7213 CD/HCP4ADGA is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. As a universal matchable (SU) bearing supplied in a pre-set pair, it is designed to accommodate combined loads—simultaneously handling significant radial and axial loads. Its construction with a P4A super-precision tolerance and ceramic balls ensures superior running accuracy, high rigidity, and excellent high-speed capability, making it ideal for high-reliability machine tool spindles and other precision equipment.
7213 CD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7213 CD/HCP4ADGA is decoded as follows:
- 7213: Basic series designation for a light series, 65mm bore angular contact ball bearing.
- C: Denotes a 15° contact angle, optimized for high-speed operation.
- D: Indicates the bearing is part of a universally matchable (SU) pair. Two such bearings can be mounted together in any combination to achieve a specific preload.
- HC: Signifies the use of Hybrid Ceramic components (ceramic balls with steel rings).
- P4A: The tolerance class, exceeding ABEC 7/ISO P4 standards, indicating extremely tight dimensional and running accuracy.
- DGA: Designates a specific Extra light (A) preload grade applied to the universal matched set.
7213 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
The 7213 CD/HCP4ADGA incorporates advanced design features that deliver distinct performance advantages:
- High Rigidity & Load Capacity: The universal matchable pair and 15° contact angle create a highly rigid system capable of supporting substantial combined radial and axial loads.
- Superior High-Speed Performance: The combination of hybrid ceramic balls (lighter than steel, reducing centrifugal forces) and a phenolic resin cage allows for a very high limiting speed of 32,500 rpm. This cage material offers excellent strength-to-weight ratio and operates smoothly with minimal friction.
- Extended Service Life & Precision: The P4A super-precision tolerances ensure minimal runout and vibration, critical for applications like machine tool spindles. The open seal type is standard for high-speed, precision applications where minimal friction is paramount, and it comes pre-lubricated for immediate operation.
- Thermal Stability: The specified temperature range of -30°C to 110°C ensures reliable performance under various operating conditions.
7213 CD/HCP4ADGA Bearing Typical Application Areas
This bearing is specifically designed for high-performance machinery where precision, speed, and rigidity are critical. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: Applications in PCB drilling, semiconductor manufacturing, and other high-accuracy processes.
- High-Frequency Motors and Turbochargers.
- Medical Equipment: High-speed dental handpieces and imaging device rotors.
- Advanced Robotics and Aerospace instrumentation.
