Star Coupling

Description:
These are rigid couplings with ultra-high torsional stiffness that were developed for servo motor applications. Unlike flexible couplings, they have no element to absorb differences between the centers of the two shafts, so they have very high torsional stiffness. Since the outer diameter relative to torque can be reduced compared to flexible couplings, smaller couplings can be used, which helps reduce the moment of inertia.

Feature:

• Simple Construction with Multi Purpose

• The simple construction of these couplings sandwiches a buffer piece called an element (made of polyurethane elastomer) between two hubs. Elements of two different hardnesses are available so you can select the appropriate one for your torque transmission responsiveness and amount of misalignment. The polyurethane elastomer used in the element enables double the torque transmission of our previous jaw coupling (Miki comparison), and since the design pre-compresses the element, it can also be used without backlash. Aluminum alloy is used as the hub material. The hub may be coupled to the shaft either by key or by clamp.

Optimal design thanks to 3D-CAD and FEM analysis

The latest CAE system was used from the initial stages of design. These models were designed using 3D-CAD. Shape and hardness was designed using the support of the latest finite element method (FEM) analysis software for optimal designs.

Optimal design of element shape achieves high transmission torque, reduces mounting error reaction force

They achieve more than double the transmission torque of older jaw couplings for the same outer diameter thanks to improved torque transmission component shapes and rigorous selection of materials.Couplings that have no backlash (ALS Y and R type) and are gentle on the partner shaft have been achieved by installing an undercut on the inner diameter side and reducing the mounting error reaction force.

Can be freely combined

Select from among three types of hubs: pilot-bore types that can be freely drilled with bores, key/set screw types, and clamp types.Key/set screw types and clamp types can also be combined.

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