TRASCO ES 65 GESA (GESA65F65) - Hub (d = 65H7, Steel)
Shaft Coupling
Specifications
Finished bore with H7 tolerance.
In the TYMA Product Catalogues you can find this material also described with the abbreviation ST.
Shaft Coupling Description
TRASCO ES 65 GESA (GESA65F65) - Hub (d = 65H7, Steel) is a part designed for SIT TRASCO ES zero-backlash shaft couplings. It is made of steel.
SIT TRASCO ES are torsionally flexible, puncture-proof shaft couplings with two metal hubs with front claws and a polyurethane element. They transmit torque through a high-precision pressure-stressed elastic star-shaped buffer which absorbs shock and torsional vibration. The hubs are manufactured with minimal backlash so that the flexible elements are very tightly inserted into the front teeth to make a so-called zero-backlash coupling. These GESA hubs are made of steel or aluminium alloy with an integrated clamping tapered element with a finished bore.
GESA hubs are sometimes called GES A series TRASCO ES hubs.
Construction

- GESA shrink hubs with an integrated clamping tapered element with a finished bore
- Elastic star-shaped element
Typical Applications
SIT TRASCO ES zero-backlash elastic couplings with GESA hubs are intended for the highest demands in a wide range of industries where the highest precision and minimum backlash are required.
They are used, for example, in machine tools, testing machines, fine mechanics, dynamometers and many other applications, particularly in the food, chemical, paper, metalworking and automotive industries.
Properties
- Torque transmission without backlash
- Vibration damping from the motor shaft (up to 80%)
- Easy and quick installation
- Couplings are resistant to oil, chemicals and high temperature
- Small size, low moment of inertia
Documents for Download
Questions about This Product?
Don’t hesitate to contact us – our specialists will be happy to help with any questions about this shaft coupling.
Shaft Coupling Manufacturer Profile
SIT S.p.A. is a company focused on mechanical power transmission (SIT stands for Società Italiana Trasmissioni, meaning Italian Power Transmission Company). Under the SIT brand, it develops, engineers, manufactures, and distributes high-quality solutions and components for industrial applications across a wide range of sectors – from automotive and precision engineering to the food and textile industries, as well as chemical plants and logistics centers.
Together with Elatech S.r.l. and other companies, SIT S.p.A. is part of the Scaglia Group. The Group operates in Europe, North America, and Asia, and comprises 7 manufacturing facilities and 6 subsidiaries with more than 1,000 employees. As part of the Group, the individual companies benefit from shared technologies and innovations, providing financial stability and sustainable growth.
We are an authorized distributor of shaft couplings, bushes, sprockets, and pulleys from SIT S.p.A., as well as polyurethane timing belts and conveyor belts from Elatech S.r.l.


