7008 CE/P4ADBG3GMM2
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7008 CE/P4ADBG3GMM2
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
68 mm
Outside diameter tolerance
-0.004mm to 0
Width
30 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4478 lbf
Radial static load rating
3442 lbf
Limiting speed
56 X 1000 rpm
Lubrication
Grease
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Available
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
Price available upon request.
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7008 CE/P4ADBG3GMM2 Bearing Product Overview & Core Advantages
The 7008 CE/P4ADBG3GMM2 is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) arrangement is preloaded and supplied as a matched set, enabling it to withstand significant combined loads (radial and axial) from both directions. Its P4A tolerance class and optimized internal geometry make it ideal for high-speed, high-precision machinery where maximum system stiffness and minimal runout are critical.
7008 CE/P4ADBG3GMM2 Bearing Model Code Explained, Specifications & Naming Convention
The model number 7008 CE/P4ADBG3GMM2 provides detailed technical specifications:
- 7008: Basic bearing series, with 40mm bore, 68mm OD, and 30mm width.
- C: 15° contact angle, optimized for high axial load capacity.
- E: Optimized internal design for enhanced performance.
- P4A: High-precision tolerance class exceeding ABEC 7 standards.
- DB: Duplex Back-to-Back mounting arrangement for high moment rigidity.
- G: Specific preload level.
- MM: Phenolic (resin) cage material.
- 2: Indicates the set contains 2 bearings.
7008 CE/P4ADBG3GMM2 Bearing Structural Features & Performance Benefits
- High Rigidity & Preload: The duplex back-to-back (DB) arrangement and factory-applied preload create an extremely rigid bearing system, effectively resisting moment loads and minimizing shaft deflection under heavy combined loads.
- Superior Load Capacity: With a 15° contact angle and robust construction, this bearing is engineered to handle high radial loads and substantial axial loads from both directions simultaneously.
- High-Speed Performance: The lightweight phenolic cage (MM) and precision-ground chrome steel components contribute to low friction and stable operation, supporting a limiting speed of 56,000 rpm.
- Precision & Accuracy: Manufactured to a P4A tolerance class, this bearing ensures minimal runout and exceptional rotational accuracy, which is vital for applications like machine tool spindles.
7008 CE/P4ADBG3GMM2 Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Gearboxes
- High-Frequency Motors
- Industrial Pumps and Compressors
- Aerospace Actuation Systems
