S7004 CD/HCP4ADBB
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7004 CD/HCP4ADBB
Basic Information
System of measurement
Metric
Weight
0.12 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
15 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3150 lbf
Radial static load rating
1912 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
Light / Class B
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
S7004 CD/HCP4ADBB Bearing Product Overview & Core Advantages
The S7004 CD/HCP4ADBB is a high-precision duplex angular contact ball bearing designed for demanding applications. This matched set features a back-to-back (DB) arrangement and a light preload (Class B), delivering exceptional system rigidity and rotational accuracy. Its construction with ceramic balls and a phenolic cage enables superior high-speed performance and thermal stability. This bearing is engineered to handle combined loads efficiently, making it an ideal solution for high-reliability, high-precision machinery.
S7004 CD/HCP4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7004 | Basic bearing series and size designation (20mm bore, 42mm OD, 24mm width). |
| C | 15° contact angle. |
| D | Duplex / Matched arrangement. |
| HC | Hybrid Ceramic: Signifies the use of ceramic balls for reduced friction and higher speed capability. |
| P4A | Tolerance class P4A, indicating very high precision levels for runout and dimensional accuracy. |
| DB | Back-to-Back mounting arrangement, providing high moment rigidity. |
| B | Light preload classification. |
S7004 CD/HCP4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & System Stability: The duplex back-to-back (DB) arrangement and applied light preload create a highly rigid bearing system that effectively resists moment loads and shaft deflection, ensuring precise positioning.
- Superior High-Speed Capability: The combination of low-density ceramic balls and a lightweight, robust phenolic cage significantly reduces centrifugal forces, enabling a high limiting speed of 100,000 rpm. This design minimizes heat generation and wear.
- Exceptional Precision: Manufactured to P4A tolerance class, this bearing guarantees minimal runout and tight dimensional control, which is critical for applications requiring extreme rotational accuracy.
- Optimized Load Capacity: The 15° contact angle is optimized to handle significant combined radial and axial loads simultaneously, providing versatile performance in complex loading conditions.
- Sealed & Pre-Lubricated: The sealed design with grease lubrication protects against contamination and is maintenance-free for the bearing's service life within its specified temperature range (-30°C to 110°C).
S7004 CD/HCP4ADBB Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Robotic Drives
- Advanced Dental and Medical Handpieces
- Aerospace Instrumentation and Gyroscopes
