Aluminum Alloy Star-Type Elastic Coupling

Aluminum Alloy Star-Type Elastic Coupling – Lightweight Precision Coupling for Dynamic Motion Systems

Product Overview

The Aluminum Alloy Star-Type Elastic Coupling is an advanced torque transmission component engineered for high-speed, precision applications where weight reduction is critical. Combining aerospace-grade aluminum construction with a multi-lobe polyurethane spider, this coupling delivers exceptional vibration damping while maintaining precise angular positioning accuracy.

Core Technologies & Innovations

1. Advanced Material Engineering

Forged 6061-T6 aluminum alloy hubs with hard anodized surface treatment (25μm thickness)

Ultralight design: 40% weight reduction compared to steel counterparts

Special alloy variants available for:

High-temperature environments (up to 150°C)

EMI/RFI shielding requirements

Cleanroom-compatible versions

2. Precision Elastic Element

8-lobe star spider geometry for optimal stress distribution

Customizable elasticity: Shore 80A to 98A (standard 92A)

Torsional stiffness options:

Soft: 8 Nm/rad (for vibration isolation)

Medium: 25 Nm/rad (general purpose)

Rigid: 100 Nm/rad (positioning systems)

3. High-Speed Dynamic Performance

Balanced to G2.5 as standard (G1.0 available)

Critical speed optimization: Special hub geometry prevents resonance

Low inertia design: Moment of inertia reduced by 35% vs. conventional couplings

Performance Specifications

Mechanical Characteristics

Torque range: 2Nm–500Nm

Peak torque capacity: 3× rated torque

Max rotational speed: 15,000 rpm (size dependent)

Angular accuracy: <0.1° repeatability

Environmental Compatibility

Operating temperature: -50°C to +120°C

Salt spray resistance: 500+ hours (ASTM B117)

UV-resistant polyurethane formulations

Application-Specific Advantages

For Robotics & Automation

Enables faster acceleration/deceleration due to low mass

Compensation for parallel misalignment in SCARA robots

In Aerospace & Defense Systems

Meets MIL-STD-810G vibration standards

Non-magnetic version available

For Semiconductor Equipment

Ultra-clean design with <5 particles/ft³ emission

ESD-safe materials

Installation & Maintenance Features

Color-coded clamping screws for proper torque application

Laser-etched alignment marks for quick installation

Spider replacement without hub disassembly

Predictive maintenance enabled via vibration monitoring grooves

This aluminum star coupling represents the next evolution in precision power transmission, offering an optimal balance of lightweight construction, vibration control, and positioning accuracy for advanced motion systems.