7213 CDGC/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7213 CDGC/P4A
Basic Information
System of measurement
Metric
Weight
1.03 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
23 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
14918 lbf
Radial static load rating
11925 lbf
Limiting speed
32.5 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
4
Universal matching bearing
Universal Matchable (SU)
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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7213 CDGC/P4A Bearing Product Overview & Core Advantages
The 7213 CDGC/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a single bearing with a 15° contact angle and Moderate (Class C) preload, it is engineered to support combined loads, accommodating significant radial loads and axial loads in one direction. Its P4A tolerance class ensures ultra-precision operation, making it ideal for high-speed spindles and other high-reliability machinery where minimal runout and vibration are critical.
7213 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 7213 CDGC/P4A provides detailed technical specifications through its suffixes. Below is a breakdown:
- 7213: Basic bearing series, indicating a 65mm bore, 120mm OD, and 23mm width.
- C: Denotes a 15° contact angle.
- D: Indicates the bearing is filled with a phenolic (polyamide) cage.
- GC: Specifies a Moderate preload (Class C) for optimized rigidity and speed performance.
- P4A: The tolerance class, signifying very high precision levels for both bore and outer diameter runout.
7213 CDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The combination of a 15° contact angle and Moderate preload (GC) provides superior system stiffness, minimizing deflection under load for enhanced machining or operational accuracy. The P4A tolerance class guarantees extremely tight dimensional control.
- Optimized Load Capacity: Engineered to handle combined radial and axial loads efficiently. With a dynamic load rating of 14,918 lbf and a static load rating of 11,925 lbf, it offers reliable performance in strenuous conditions.
- High-Speed Capability: The lightweight phenolic cage and optimized internal geometry contribute to a high limiting speed of 32,500 rpm, making it suitable for high-speed applications.
- Universal Matching Design (SU): This bearing is Universal Matchable, allowing multiple bearings (up to 4 in a set) to be mounted together in various configurations (e.g., back-to-back, face-to-face) to achieve specific stiffness and load-sharing characteristics without additional selection or machining.
7213 CDGC/P4A Bearing Typical Application Areas
The 7213 CDGC/P4A is predominantly used in high-precision, high-speed machinery, including:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and lathes.
- Precision Grinding Equipment
- High-Frequency Motors
- Industrial Pumps and Compressors
- Aerospace and Defense Actuation Systems
