7208 CDGC/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7208 CDGC/P4A
Basic Information
System of measurement
Metric
Weight
0.37 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
40 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
80 mm
Outside diameter tolerance
-0.004mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
7605 lbf
Radial static load rating
5400 lbf
Limiting speed
41 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
No drawings available at the moment, will be launched soon
In Stock
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7208 CDGC/P4A Bearing Product Overview & Core Advantages
The 7208 CDGC/P4A is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Operating under a P4A tolerance class, it delivers superior running precision. This bearing is universally matchable (SU), allowing for flexible arrangement in sets to achieve optimal preload and system stiffness. Its moderate preload (Class C) ensures reliable performance from installation, making it ideal for high-speed and high-precision machinery where stability under combined loads is critical.
7208 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 7208 CDGC/P4A provides detailed technical specifications:
- 7208: Basic series designation, indicating a metric angular contact ball bearing with a 40mm bore and 80mm outside diameter.
- C: Denotes a 15° contact angle, optimized for handling combined radial and axial loads.
- DG: Signifies a Universal Matchable (SU) bearing. Two bearings can be paired in a "back-to-back" (DB) or "face-to-face" (DF) arrangement to support moment loads.
- C: Indicates the moderate preload (Class C), which provides high rigidity and reduces axial and radial runout.
- P4A: Specifies the tolerance class, representing very high precision levels for inner and outer ring runouts and dimensions.
- Open: The bearing is supplied without seals or shields, allowing for customized lubrication solutions in controlled environments.
7208 CDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance standards, this bearing ensures minimal runout and vibration, which is crucial for the accuracy of machine tool spindles and other precision equipment.
- Optimized Load Capacity: The 15° contact angle and robust chrome steel construction enable it to support significant combined radial and axial loads simultaneously.
- Superior High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, contributing to a high limiting speed of 41,000 rpm. The open design facilitates efficient air circulation and advanced lubrication methods for thermal management.
- Universal Matchability (SU): This feature allows for the creation of precisely preloaded bearing sets, enhancing system stiffness and rotational accuracy without the need for selective assembly.
7208 CDGC/P4A Bearing Typical Application Areas
The 7208 CDGC/P4A is engineered for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Industrial Pumps and Compressors
- Aerospace and Defense Positioning Systems
