7213 ACD/HCP4ADBC
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7213 ACD/HCP4ADBC
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
25 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
15
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
23400 lbf
Radial static load rating
22950 lbf
Limiting speed
36 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
No drawings available at the moment, will be launched soon
In Stock
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7213 ACD/HCP4ADBC Bearing Product Overview & Core Advantages
The 7213 ACD/HCP4ADBC is a precision duplex pair of angular contact ball bearings, pre-matched in a back-to-back (DB) arrangement. This configuration is engineered to provide exceptional high rigidity and the capacity to handle combined loads, including significant radial loads and bidirectional axial loads. Manufactured to a P4A tolerance class, it delivers superior running accuracy, making it ideal for high-performance applications demanding precision and reliability. The use of ceramic balls further enhances its performance in high-speed and demanding environments.
7213 ACD/HCP4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with a 25° contact angle. |
| HC | Indicates the use of Hybrid Ceramic balls (Silicon Nitride). |
| P4A | Denotes a high precision tolerance class (superior to ABEC 7). |
| DB | Specifies the bearings are supplied as a pre-set Duplex Back-to-Back pair. |
| C | Indicates a Moderate preload is applied to the matched set. |
7213 ACD/HCP4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex back-to-back arrangement creates a wide, rigid support system that effectively resists moment loads and provides excellent stability. This design enables the bearing set to handle significant combined radial and axial loads from both directions.
- High-Speed Performance: The combination of a lightweight phenolic resin cage and low-density ceramic balls reduces centrifugal forces, lowers operating temperatures, and allows for a high limiting speed of 36,000 rpm.
- Precision Operation: Manufactured to P4A tolerance standards, this bearing ensures minimal runout and vibration, which is critical for applications requiring high rotational accuracy.
- Optimized for Performance: The 25° contact angle offers a balanced capacity for axial and radial loads. The bearings are pre-lubricated and ready for installation, operating effectively within a temperature range of -30°C to 110°C.
7213 ACD/HCP4ADBC Bearing Typical Application Areas
This high-precision, high-speed bearing pair is ideally suited for demanding applications such as:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Aerospace & Defense Systems
- High-Performance Pumps and Compressors
