S7009 ACE/P4ADBB
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7009 ACE/P4ADBB
Basic Information
System of measurement
Metric
Weight
0.5 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
75 mm
Outside diameter tolerance
-0.004mm to 0
Width
32 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4478 lbf
Radial static load rating
3668 lbf
Limiting speed
46 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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S7009 ACE/P4ADBB Bearing Product Overview & Core Advantages
The S7009 ACE/P4ADBB is a precision duplex angular contact ball bearing configured in a back-to-back (DB) arrangement. Engineered for applications demanding exceptional rotational accuracy and rigidity, this pre-matched set is designed to simultaneously handle combined radial and axial loads from both directions. With its P4A super-precision tolerance class and light preload (Class B), it delivers superior running accuracy, high system stiffness, and is optimized for high-speed operation, making it an ideal choice for high-performance spindles and precision machinery.
S7009 ACE/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
The model number S7009 ACE/P4ADBB is decoded as follows:
- S7009: Basic bearing series, indicating a 45mm bore, 75mm OD, and 32mm width.
- ACE: Internal design code specific to the manufacturer, often relating to contact angle and internal clearance optimization.
- P4A: Denotes the tolerance class, signifying very high precision for both inner and outer ring runouts.
- DBB: Stands for Duplex Back-to-Back arrangement. This configuration provides high moment rigidity and is effective in stabilizing shafts under complex loads.
S7009 ACE/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists moment loads and accommodates heavy combined loads (radial and bidirectional axial loads). The 25° contact angle further enhances axial load carrying capacity.
- Super-Precision Performance: Manufactured to a P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for applications requiring extreme rotational accuracy.
- High-Speed Capability: The lightweight and robust phenolic resin cage ensures stable guidance of the balls at high rotational speeds, contributing to the bearing's high limiting speed of 46,000 rpm.
- Optimized Material & Lubrication: Components made from high-grade chrome steel provide excellent wear resistance and fatigue life. The bearing is pre-lubricated with grease, offering reliable operation within a temperature range of -30°C to 110°C.
S7009 ACE/P4ADBB Bearing Typical Application Areas
This precision duplex bearing is ideally suited for high-demand applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes
- High-Frequency Motors and Spindles
- Medical and Dental Equipment
- Aerospace Positioning Systems
