7004 FE/HCP4ADT
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7004 FE/HCP4ADT
Basic Information
System of measurement
Metric
Weight
0.11 kg
Tolerance class
P4A
Seal type
Open
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
18 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2678 lbf
Radial static load rating
1508 lbf
Limiting speed
121 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7004 FE/HCP4ADT Bearing Product Overview & Core Advantages
The 7004 FE/HCP4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This duplex tandem (DT) arrangement consists of two preloaded bearings, delivering superior high rigidity and axial load capacity in one direction. Manufactured to a P4A tolerance class, it ensures extremely tight running accuracy. The combination of a ceramic ball material and phenolic cage contributes to its capabilities as a high-speed bearing, suitable for high rotational speeds while maintaining dimensional stability.
7004 FE/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
The model number 7004 FE/HCP4ADT can be broken down as follows:
- 7004: Basic series number, indicating a metric angular contact ball bearing with a 20mm bore, 42mm OD, and 24mm width.
- FE: Indicates a specific internal design and preload level for optimized performance.
- HC: Signifies the use of Hybrid Ceramic balls (Silicon Nitride).
- P4A: Denotes a very high tolerance class for exceptional dimensional and running accuracy.
- DT: Stands for Duplex Tandem, meaning two bearings are mounted together in a matched set to increase axial load capacity in one direction.
7004 FE/HCP4ADT Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The duplex tandem arrangement and available preload create an extremely stiff bearing unit, capable of handling significant combined loads (radial and axial).
- Superior High-Speed Performance: The ceramic balls reduce centrifugal forces and friction, while the lightweight phenolic cage ensures stability, enabling a high limiting speed of 121,000 rpm.
- Precision Operation: Manufactured to P4A tolerance class with a 18° contact angle, this bearing provides exceptional running accuracy and low noise levels, which is critical for precision machinery.
- Optimized for Performance: The open seal type allows for customized lubrication schemes to further enhance speed and temperature performance within the specified temperature range of -30°C to 110°C.
7004 FE/HCP4ADT Bearing Typical Application Areas
This high-precision bearing is ideally suited for applications where speed, rigidity, and accuracy are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling and grinding spindles.
- Precision Robotics: Arm joints and high-accuracy actuators.
- High-Frequency Motors and Spindles: Used in PCB drilling and dental handpieces.
- Aerospace and Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
