Description

Product Overview

This precision-engineered 3-Jaw Coupling Hub is a critical component of a zero-backlash flexible coupling system. Manufactured from high-grade aluminum alloy, it is designed to connect drive shafts (such as servo motors) to driven shafts (like ultrasonic cutting equipment) while providing high torque density and maintaining lightweight properties . The tapered body and stepped bore are custom-machined to ensure precise axial location and secure assembly within your specific mechanical system.

Our CNC machining services guarantee high precision and repeatability, making this hub an ideal choice for applications demanding reliable power transmission and vibration dampening .

CNC Machining Specifications & Parameters

Applications

This coupling hub is versatile and used in a variety of precision automation environments:

• Ultrasonic Cutting Machinery: Transmits torque to the ultrasonic transducer assembly .

• Servo Systems & Stepper Motors: Provides precise zero-backlash motion control.

• Automated Machinery: Connects pump/motor shafts in packaging, textile, and printing equipment .

• Material Handling: Transfers power in precision conveyor systems.

Material Analysis

We utilize high-strength aluminum alloys sourced from certified mills :

• 7075-T6: Offers superior torsional stiffness and failure torque compared to 6061, making it ideal for high-precision applications where rigidity is critical . Hardness reaches 150 HB .

• 6061-T6: Excellent machinability and corrosion resistance for general-purpose use.

Tolerance Capabilities

We adhere to strict international standards, including ISO 2768 :

• General Tolerances (ISO 2768-1): We offer Fine (f) or Medium (m) classes depending on functional requirements .

• Geometric Tolerances (ISO 2768-2): We ensure high precision on flatness, perpendicularity, and circular run-out (H or K classes) .

• Bore Finish: Precise H7 bore fits ensure minimal clearance and shaft alignment .

Manufacturing Challenges

1. Thin-Wall Deformation: The tapered body makes the part susceptible to clamping deformation during machining. We use specialized fixtures to minimize distortion and guarantee concentricity .

2. Surface Roughness: Achieving a fine finish on the internal bore is crucial for maximizing torque and wear resistance. We optimize cutting feeds and speeds to avoid vibration marks .

3. Machining Stress: Removing material to create the jaw profile can induce residual stress. We utilize stress-relief protocols and precise toolpaths to maintain critical dimensions.

FAQ

Q: What is the difference between 6061 and 7075 Aluminum for this part?
A: 7075 exhibits approximately 1.6 times higher material strength than 6061 . It provides better torsional rigidity and failure torque, making it the preferred choice for ultra-precision machinery .

Q: Does this hub come with a spider insert?
A: The hub is machined separately. For a complete coupling assembly, it requires a polyurethane spider (available in 80A, 92A, 98A Shore hardness) and a mating hub . We can also supply the complete assembly upon request.

Q: What is the standard bore tolerance?
A: Standard bore tolerance is H7 (+0.001″ / -0.000″) . Custom tolerances for keyways, set screws, or step bores can be machined to your exact specifications.

Q: Do you provide dynamic balancing?
A: Yes, dynamic balancing services are available for high-speed applications (e.g., >10,000 RPM) to reduce vibration and ensure longevity .