706 CDGB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
706 CDGB/HCP4A
Basic Information
System of measurement
Metric
Weight
0.005 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
6 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
17 mm
Outside diameter tolerance
-0.004mm to 0
Width
6 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.175 mm
Ball quantity
8
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
457 lbf
Radial static load rating
172 lbf
Limiting speed
140 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
4
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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706 CDGB/HCP4A Bearing Product Overview & Core Advantages
The 706 CDGB/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. This single bearing features a 15° contact angle and is manufactured to P4A tolerance class for superior running accuracy. Its core advantages include the ability to accommodate combined radial and axial loads, high-speed capability enabled by its phenolic cage and ceramic balls, and universal matchability (SU), allowing for flexible mounting in preloaded sets. This design is ideal for machine tool spindles and other high-precision, high-rigidity applications.
706 CDGB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 706 | Basic bearing series designation. |
| CD | 15° contact angle. |
| GB | Light preload (Class B). |
| HC | Hybrid Ceramic: Ceramic balls with steel rings. |
| P4A | High precision tolerance class, exceeding ABEC 7 standards. |
706 CDGB/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces friction, heat generation, and wear. This enables higher limiting speeds (140,000 rpm) and extended service life, especially in high-speed applications.
- Phenolic Resin Cage: The lightweight and robust phenolic cage contributes to smooth operation at high speeds and offers excellent dimensional stability.
- Precision & Rigidity: Manufactured to P4A tolerance class with a light preload (GB), this bearing provides high running accuracy, minimal run-out, and increased system rigidity, which is critical for precise positioning.
- Universal Matchability (SU): This bearing is universally matchable, meaning any two bearings can be paired in a duplex set (DB, DF, DT) without selective matching, simplifying inventory and assembly for preloaded arrangements.
- Open Design & Lubrication: The open seal type allows for optimal lubrication flow and heat dissipation. The bearing is pre-lubricated for immediate operation within a temperature range of -30°C to 110°C.
706 CDGB/HCP4A Bearing Typical Application Areas
This high-precision angular contact ball bearing is ideally suited for demanding applications where speed, accuracy, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles.
- Precision Instruments: Measuring devices, optical scanners.
- High-Speed Motors: Spindles for PCB drilling, dental handpieces.
- Robotics: High-accuracy joints and arm assemblies.
