S7006 ACE/P4ADBB
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7006 ACE/P4ADBB
Basic Information
System of measurement
Metric
Weight
0.24 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
55 mm
Outside diameter tolerance
-0.004mm to 0
Width
26 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
17
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3218 lbf
Radial static load rating
2250 lbf
Limiting speed
71.5 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
Light / Class B
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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S7006 ACE/P4ADBB Bearing Product Overview & Core Advantages
The S7006 ACE/P4ADBB is a precision duplex angular contact ball bearing designed for high-performance applications requiring exceptional rigidity and running accuracy. This matched back-to-back (DB) arrangement is preloaded to Light / Class B specifications, providing superior system stability and resistance to moment loads. Its P4A tolerance class ensures extremely tight dimensional and running accuracy, making it ideal for high-speed spindles and other precision machinery where minimal runout and vibration are critical.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S7006 | Basic bearing series and size designation (30mm bore, 55mm OD, 26mm width). |
| ACE | Designates a 25° contact angle and specific internal design optimized for high rigidity. |
| P4A | Indicates a super-precision tolerance class, exceeding ABEC 7/ISO P4 standards for enhanced running accuracy. |
| DBB | Specifies the Duplex Back-to-Back (DB) mounting arrangement, which provides high moment stiffness. |
S7006 ACE/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & System Stability: The back-to-back duplex arrangement and light preload create a statically determinate system that significantly increases rigidity, effectively resists moment loads, and minimizes axial and radial deflection under operating conditions.
- Superior Load Capacity: The 25° contact angle is optimized to handle significant combined loads (radial and axial) simultaneously. The duplex design effectively shares the load across two bearings.
- Precision High-Speed Operation: The phenolic resin cage is lightweight and possesses excellent sliding properties, contributing to lower friction, lower operating temperatures, and a high limiting speed of 71,500 rpm. The P4A tolerance ensures smooth, quiet operation at high velocities.
- Sealed & Pre-Lubricated: As a sealed bearing, it is protected from contamination and is pre-lubricated with grease, making it ready for immediate use and suitable for applications where re-lubrication is difficult.
S7006 ACE/P4ADBB Bearing Typical Application Areas
This bearing is engineered for the most demanding precision applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, precision grinding, and other high-accuracy machining operations.
- High-Frequency Motors: Spindles for routers and other high-RPM electric motors.
- Robotics: High-precision joints and actuators requiring high rigidity and accuracy.
