S7004 ACE/P4ADBA
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7004 ACE/P4ADBA
Basic Information
System of measurement
Metric
Weight
0.13 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
20 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
42 mm
Outside diameter tolerance
-0.004mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2632 lbf
Radial static load rating
1440 lbf
Limiting speed
100 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
Extra light / Class A
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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S7004 ACE/P4ADBA Bearing Product Overview & Core Advantages
The S7004 ACE/P4ADBA is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This matched back-to-back arrangement provides superior stability and can accommodate combined loads (radial and axial loads from both directions simultaneously). Manufactured to P4A tolerance class, it delivers high running accuracy and is pre-lubricated with grease for immediate use, making it ideal for high-speed, high-reliability machinery.
S7004 ACE/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| S7004 | Precision angular contact ball bearing series with 20mm bore. |
| ACE | 25° contact angle and phenolic resin cage. |
| P4A | High precision tolerance class (equivalent to ABEC 7). |
| DB | Duplex Back-to-Back mounting arrangement for high rigidity. |
S7004 ACE/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) configuration creates a rigid bearing system that effectively resists moment loads, ensuring precise shaft positioning and minimal deflection under heavy combined loads.
- Superior Load Capacity: With a 25° contact angle and optimized internal geometry, this bearing is engineered to handle significant radial and bidirectional axial loads simultaneously.
- High-Speed Performance: The lightweight phenolic resin cage and precision-ground chrome steel components enable stable operation at high rotational speeds, with a limiting speed of 100,000 rpm.
- Pre-optimized for Performance: Supplied as a matched set of 2 bearings with Extra light (Class A) preload, this unit ensures consistent performance, reduced vibration, and simplified installation.
S7004 ACE/P4ADBA Bearing Typical Application Areas
This high-precision duplex bearing is ideally suited for demanding applications, including:
- Machine Tool Spindles
- High-Frequency Spindles
- Precision Grinding Machines
- Industrial Pumps & Compressors
- Robotic Drives & Actuators
