SIT couplings are available in both solid hub and machined versions for standard shaft diameters.

The set screws are machined at 120-degree intervals to each other, with one positioned 180 degrees from the keyway. Both the solid hub and finished shaft types are generally available from stock with fast delivery. Approved according to CE ATEX standards.

This type of coupling allows for quick assembly without any shaft-hub play. It is a keyless coupling; the tightening torque (Ms) indicated in the table must be strictly observed. Type M is available with or without a keyway. Compliant with EC ATEX standards.

Compact version of the GESM series with reduced overall length. They guarantee the same performance as the standard version in a smaller size.
The fixing hub allows for a quick and secure connection of the shaft-hub with 0 play. Approved according to EC ATEX standard.

This type of coupling provides excellent homokinetic uniformity. Furthermore, the absence of a key or fixing bolts ensures a well-balanced coupling and greatly simplifies installation and removal. It facilitates precise radial/axial positioning for applications that require it. The absence of a key also prevents corrosion and eliminates play between the shaft and hub. This is the ideal coupling type for applications requiring precision and/or high rotational speeds. Approved according to EC ATEX standards.

Zero-backlash precision coupling designed for multi-spindle devices in machine tools or low-mass devices, such as short central spindles, multi-head spindles, primary spindles in machining centers, or those mounted to high-speed bearings with reduced tolerance class. It is suitable for very high rotational speeds (up to peripheral speeds of 50 m/s).

This design allows for greater misalignment. The two polyurethane stars provide high vibration damping, resulting in reduced drive noise and a longer service life for related components (e.g., bearings). The intermediate element is made of aluminum alloy and can be used with any type of hub design.

This zero-backlash design allows for long-distance connections in applications such as lifting spindles, gantry robots, etc. The intermediate shaft is manufactured as standard in steel, but can be manufactured in various materials (aluminum, carbon, etc.) for specific needs.

The presence of 2 stars increases damping capabilities and allows for high misalignments.

Ideal solution for long-distance shaft connections. Zero-backlash torque transmission. Used in applications such as automated machinery, elevators, palletizers, and manipulators.

Designed for lengths up to 4 m without bearing support (depending on rotational speed). The double-groove design allows for belt mounting and replacement without displacing the driven machine/driver. All aluminum alloy construction for very low inertia.