7004 CD/P4A
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7004 CD/P4A
Basic Information
System of measurement
Metric
Weight
0.068 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
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
63 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:
$ 41.36
/ each
In Stock
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7004 CD/P4A Bearing Product Overview & Core Advantages
The 7004 CD/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. Engineered to a P4 (ABEC-7) tolerance class, this single-row bearing is preloaded and optimized to handle combined loads, with a specific 15° contact angle for superior axial load capacity. Its phenolic resin cage and precision-ground chrome steel components make it an ideal solution for high-speed spindles and other high-performance machinery where reliability and precision are critical.
7004 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7004 | Standard bearing series designation with 20mm bore, 42mm OD, and 12mm width. |
| CD | Indicates a specific contact angle (15°) and internal design optimized for high rigidity and precise axial positioning. |
| P4 | Denotes the tolerance class (ABEC-7), signifying extremely tight dimensional and running accuracy for precision applications. |
| A | Specifies that the bearing is supplied with a preload for enhanced stiffness and reduced runout. |
7004 CD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The P4 tolerance class and factory-applied preload ensure minimal deflection and superior running accuracy, which is critical for machine tool spindles and other high-precision equipment.
- Optimized Load Capacity: The 15° contact angle is engineered to efficiently support significant axial loads in one direction while also accommodating radial loads, making it suitable for combined load conditions.
- High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, contributing to a high limiting speed of 63,000 rpm. This makes the bearing an excellent choice for high-speed applications.
- Superior Material Construction: Manufactured from high-grade chrome steel for rings and balls, the bearing offers high durability, wear resistance, and a long operational life under demanding conditions.
7004 CD/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC lathes.
- Precision Rotary Systems: High-frequency motors, encoder systems, and measuring instruments.
- High-Performance Drives: Servo motors, robotics, and aerospace actuation systems.
