S7004 CD/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7004 CD/P4A
Basic Information
System of measurement
Metric
Weight
0.068 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
20 mm
Bore diameter tolerance
-0.005mm to 0
Outside diameter
42 mm
Outside diameter tolerance
-0.006mm to 0
Width
12 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
12
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
1960 lbf
Radial static load rating
968 lbf
Limiting speed
43 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 119.52
/ each
In Stock
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S7004 CD/P4A Bearing Product Overview & Core Advantages
The S7004 CD/P4A is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a single, preloaded bearing, it eliminates internal clearance, providing immediate and precise response under high-speed operation. Its P4 (ABEC-7) tolerance class ensures superior running accuracy, making it ideal for high-performance spindles and other precision machinery where minimal runout and vibration are critical. The combination of a 15° contact angle and phenolic cage enables superior handling of combined radial and axial loads at high speeds.
S7004 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| S7004 | Standard metric series bearing with 20mm bore, 42mm OD, 12mm width. |
| CD | Specific internal design and contact angle (15°) for optimized performance. |
| P4A | Indicates a P4 (ABEC-7) tolerance class with specific dimensional and running accuracy requirements. |
S7004 CD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The preloaded design ensures zero internal clearance, resulting in high system stiffness and precise shaft positioning, which is crucial for machining accuracy.
- Optimized for High Speeds: The lightweight phenolic resin cage reduces centrifugal forces, contributing to a high limiting speed of 43,000 rpm. The 15° contact angle provides an excellent balance between radial load capacity and axial load capability.
- Superior Load Capacity: Engineered to handle significant combined loads (radial and axial), with a dynamic load rating of 1960 lbf and a static load rating of 968 lbf.
- Sealed & Lubricated for Life: As a sealed bearing, it is pre-lubricated and protected from contamination, offering long-term, maintenance-free operation within its specified temperature range.
S7004 CD/P4A Bearing Typical Application Areas
This bearing is engineered for high-performance applications, including:
- Machine Tool Spindles: For CNC milling machines, grinding spindles, and high-speed machining centers.
- Precision Instrumentation: In medical devices, optical scanners, and coordinate measuring machines.
- High-Speed Motors and Drives: Where low friction, high speed, and accuracy are paramount.
- Robotics: In precision joints and arm assemblies requiring high rigidity and responsiveness.
