S7008 CD/P4ADBC
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7008 CD/P4ADBC
Basic Information
System of measurement
Metric
Weight
0.39 kg
Tolerance class
P4A
Seal type
Sealed
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
7.938 mm
Ball quantity
18
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
6210 lbf
Radial static load rating
4950 lbf
Limiting speed
41 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
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
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S7008 CD/P4ADBC Bearing Product Overview & Core Advantages
The S7008 CD/P4ADBC is a high-precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement provides superior stability and is preloaded to Moderate (Class C) specifications, ensuring minimal axial and radial play under operating conditions. Its primary advantage lies in its ability to handle combined radial and axial loads simultaneously with high reliability, making it an ideal choice for high-speed spindles and precision machinery where rigidity and running accuracy are paramount.
S7008 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance |
|---|---|---|
| C | 15° Contact Angle | Optimized for high-speed operation and moderate axial load capacity. |
| D | Duplex Back-to-Back (DB) Arrangement | Provides high moment rigidity and stable preload. |
| P4A | High Precision Tolerance Class | Exceeds ABEC 7/ISO P4 standards, ensuring exceptional running accuracy. |
| Sealed | Integrated Seals | Protects against contamination and retains lubricant for extended service life. |
S7008 CD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) design and moderate preload (Class C) create a highly rigid bearing system that effectively resists moment loads and deflection, crucial for maintaining precision in machining operations.
- Superior Load Capacity: Engineered to support combined loads, this double row angular contact bearing configuration efficiently manages both radial forces and bidirectional axial thrust.
- Optimized High-Speed Performance: The phenolic resin cage is lightweight and robust, contributing to lower centrifugal forces and smoother operation at the high limiting speed of 41,000 rpm. The standard grease lubrication is formulated for stable performance across the operating range.
- Precision & Longevity: Manufactured to P4A tolerance class with a 40mm bore, this bearing guarantees minimal runout and vibration. The sealed design and pre-applied lubricant enhance reliability and provide a maintenance-free solution in many applications.
S7008 CD/P4ADBC Bearing Typical Application Areas
This precision bearing is specifically engineered for high-performance machinery, including:
- Machine Tool Spindles: CNC machining centers, grinding spindles, and high-speed milling heads.
- Precision Rotary Systems: Industrial robots, indexing tables, and rotary actuators.
- High-Speed Drives: Electric motor spindles and compressor shafts.
- Medical & Laboratory Equipment: Centrifuges and other devices requiring high rotational accuracy.
