S7008 ACE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7008 ACE/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
0.35 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
25 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4275 lbf
Radial static load rating
3218 lbf
Limiting speed
41 X 1000 rpm
Lubrication
Grease
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 170.01
/ each
In Stock
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S7008 ACE/HCP4ADGA Bearing Product Overview & Core Advantages
The S7008 ACE/HCP4ADGA is a precision angular contact ball bearing engineered for exceptional performance in demanding applications. This sealed, universal matchable bearing features a P4A super-precision tolerance class and is designed to handle combined radial and axial loads simultaneously. Its construction with ceramic balls and a phenolic cage enables superior high-speed capabilities and high rigidity, making it ideal for machine tool spindles and other high-precision, high-reliability systems.
S7008 ACE/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| ACE | 25° contact angle, universal matchable design | Optimized for combined loads; bearings can be mounted in any combination (back-to-back, face-to-face, or tandem) |
| HC | Hybrid Ceramic (Silicon Nitride balls) | Reduced weight, higher speed potential, longer service life, and operation with minimal lubrication |
| P4A | Super Precision Tolerance Class (ABEC 7 / ISO P4) | Exceptional running accuracy, low noise, and vibration for critical high-speed applications |
| DGA | Sealed on both sides, pre-lubricated with grease | Effective contamination exclusion, maintenance-free operation, and extended relubrication intervals |
S7008 ACE/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row angular contact design and 25° contact angle provide high radial and axial stiffness, enabling the bearing to support significant combined loads from multiple directions.
- Superior High-Speed Performance: The combination of lightweight ceramic balls and a phenolic resin cage reduces centrifugal forces and friction, allowing for a high limiting speed of 41,000 rpm. This makes it an excellent high-speed bearing solution.
- Precision & Longevity: Manufactured to P4A tolerance class with a universal matchable (SU) design, this bearing ensures precise shaft positioning and smooth operation. The sealed construction with pre-applied grease protects against contaminants and ensures reliable performance over a wide temperature range (-30°C to 110°C).
S7008 ACE/HCP4ADGA Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for applications requiring high speed, accuracy, and rigidity, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices and laboratory equipment.
- High-Frequency Motors & Spindles: Where minimal runout and vibration are critical.
- Medical Equipment: Dental handpieces and surgical tools.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision mechanisms.
