7034 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7034 ACD/HCP4A
Basic Information
System of measurement
Metric
Weight
5.93 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
170 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
260 mm
Outside diameter tolerance
-0.013mm to 0
Width
42 mm
Width tolerance
-0.24mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
26.988 mm
Ball quantity
22
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
44775 lbf
Radial static load rating
52200 lbf
Limiting speed
9 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
Price:
$ 2879.72
/ each
In Stock
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7034 ACD/HCP4A Bearing Product Overview & Core Advantages
The 7034 ACD/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. This single-row bearing is distinguished by its 25° contact angle and P4 (ABEC-7) tolerance class, making it ideal for handling combined loads where high rigidity and precise rotational accuracy are paramount. Its optimized internal geometry, combined with a phenolic resin cage and ceramic balls, enables superior high-speed performance and extended service life. The bearing is pre-lubricated and available with a preload, ensuring immediate operational readiness and consistent performance in demanding environments.
7034 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 7034 ACD/HCP4A provides detailed technical specifications through its suffixes:
- 7034: Basic designation indicating a metric series angular contact ball bearing with a 170 mm bore and 260 mm outside diameter.
- ACD: Signifies a 25° contact angle and a specific internal design optimized for high rigidity and high-speed operation.
- HCP4A: This suffix combination indicates:
- HC: Denotes the use of Hybrid Ceramic components (ceramic balls with steel rings).
- P4: Specifies a P4 tolerance class (equivalent to ABEC-7), ensuring ultra-precision dimensional and running accuracy.
- A: Indicates a specific internal clearance or preload category, optimized for the bearing's intended high-performance application.
7034 ACD/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces friction, heat generation, and wear. This results in a higher limiting speed (9,000 rpm), reduced lubrication requirements, and enhanced resistance to electrical arcing, making it suitable for applications involving variable frequency drives.
- High Rigidity & Load Capacity: The 25° contact angle is optimally designed to support substantial combined (radial and axial) loads simultaneously. The bearing's robust construction provides high system rigidity, which is critical for maintaining precision under load.
- Superior High-Speed Performance: The lightweight phenolic resin cage offers excellent dimensional stability and low friction at high rotational speeds, contributing to the bearing's high limiting speed and smooth operation.
- Precision & Reliability: Manufactured to a P4 tolerance class, this bearing guarantees minimal runout and precise rotational accuracy, which is essential for machine tool spindles and other high-precision equipment.
7034 ACD/HCP4A Bearing Typical Application Areas
The 7034 ACD/HCP4A is ideally suited for high-performance applications across various industries, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers where precision, rigidity, and speed are critical.
- High-Frequency Motors & Spindles: Especially those used with variable frequency drives (VFDs), benefiting from the hybrid ceramic construction's electrical insulation properties.
- Precision Robotics: Arm joints and rotary axes requiring high accuracy, stiffness, and rapid response.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other instrumentation demanding high reliability and performance under extreme conditions.
- Medical Equipment: High-speed dental handpieces and imaging device rotors.
