7005 CE/HCP4AL1DGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7005 CE/HCP4AL1DGA
Basic Information
System of measurement
Metric
Weight
0.13 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
25 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
47 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
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3038 lbf
Radial static load rating
1868 lbf
Limiting speed
85 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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7005 CE/HCP4AL1DGA Bearing Product Overview & Core Advantages
The 7005 CE/HCP4AL1DGA is a precision angular contact ball bearing engineered for the most demanding high-performance applications. This metric series bearing is distinguished by its extra light preload (Class A) and P4A super-precision tolerance, ensuring exceptional running accuracy and minimal vibration. Its universal matchable (SU) design allows for flexible mounting in duplex pairs to accommodate combined loads. A key performance differentiator is the use of ceramic balls, which significantly reduce centrifugal forces, lower operating temperatures, and enable an extremely high limiting speed of 85,000 rpm, making it an ideal high-speed bearing solution.
7005 CE/HCP4AL1DGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| CE | Hybrid Bearing with Ceramic Balls | Reduced weight, lower friction, and superior performance at high speeds. |
| HC | Phenolic Resin (Polyamide) Cage | Lightweight cage ideal for high acceleration and deceleration, with good slip properties. |
| P4A | Super Precision Tolerance Class | Guarantees extreme dimensional and running accuracy for applications requiring high positional precision. |
| L1 | Light Preload | Eliminates internal clearance for high rigidity and precise shaft positioning without excessive torque. |
| DG | Universal Matchable (SU designation) | Can be mounted in pairs (back-to-back, face-to-face, or tandem) to support combined radial and axial loads from both directions. |
| A | 30° Contact Angle (Standard for this series) | Optimized for carrying high axial loads in one direction, with good radial load capacity. |
7005 CE/HCP4AL1DGA Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls provides exceptional high-speed capability. Ceramic balls are lighter and harder than steel, reducing centrifugal loading and wear, which directly contributes to the bearing's high limiting speed and extended service life.
- High Rigidity & Precision: The extra light preload (L1) and P4A tolerance class ensure maximum shaft rigidity and rotational accuracy. This is critical for applications where minimal runout and precise positioning are non-negotiable.
- Optimized Cage for High RPM: The phenolic resin cage (HC) is engineered for high-speed operation, offering excellent strength-to-weight ratio and smooth guidance of the ceramic balls, further enhancing the high-speed performance.
- Superior Load Capacity: With a 15° contact angle, this bearing is designed to handle significant combined loads (simultaneous radial and axial forces). Its universal matchable (SU) nature allows for creating duplex sets that can support bidirectional axial loads and moment loads.
7005 CE/HCP4AL1DGA Bearing Typical Application Areas
This bearing is specified for high-tech machinery where speed, precision, and reliability are paramount. Key application areas include:
- High-Frequency CNC Spindles: For milling, drilling, and grinding where maximum RPM and accuracy are required.
- Precision Machine Tools: In high-speed machining centers and lathes.
- Advanced Robotics: For high-precision, high-speed arm joints and direct-drive motors.
- Aerospace & Defense Systems: In gyroscopes, navigation systems, and auxiliary power units.
- Semiconductor Manufacturing Equipment: In wafer handling robots and precision stages.
