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Gumis Couplings

Our first coupling that was shipped as a sample to our client in 2006. is still working without any issues. More to this is it is still working with same Rubber NBR Spider. Our couplings are made of solid piece of steel/aluminum and can be made in any variety our client wish or situation requires.
Coupling 200mm
Coupling 200mm
Coupling for Brine Pump
Coupling for Brine Pump
Coupling for Laundry GW
Coupling for Laundry GW
Coupling
Coupling
Custom Made Coupling
Custom Made Coupling
Various Coupling Hubs
Various Coupling Hubs
AD EGB Circulating Pump Coupling
AD EGB Circulating Pump Coupling
Gumis AHU Coupling with spider ring
Gumis AHU spojka s prstenastim gumenim umetkom

Every idea is run through R&D

We give high importance to every inquiry we receieve that needs to be developed or just tested with our feedback

Verified quality and trust in our products

For 2 decades we are supplying our growing number of cruise liners and adapting to every need/comment or feedback

Custom-made or high series production

Our flexibility and adaptibility alows us to promtly quote and research which ever production option you wish

High quality materials and machines

Only high grade and solid pieces of steel/aluminum/bronze are used to machine a products. We do not use cast materials.
Work is done on EU machines made in Germany which gives us high precision in final product

Gumis Coupling Test

This test was conducted in the Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture in Split, Croatia. The coupling test has been conducted in the following manner:
Installation of the previously mentioned coupling.
80% nominal torque load on the coupling lasting 60 minutes. Indirect determination of the coupling load torque. Check heating at the end of the test (whether the temperature of the coupling is higher than the drive shaft, and noting down the difference) and potential mechanical damage of the coupling.
120% nominal torque load on the coupling lasting 60 minutes. Indirect determination of the coupling load torque. Check the heating (if the temperature of the coupling is higher than the drive shaft, and noting down the difference) and potential mechanical damage of the coupling.
Impact load test on the coupling (up to the nominal torque) and simultaneous rotational speed reversal (up to the nominal value) lasting 60 minutes. Check the temperature and condition of the coupling every 10 minutes.
The angle of coupling twist measurement at a standstill at different loads (from 25% to 150% of nominal torque). While conducting the test using a mechanical brake on one side of the coupling.
Conduct coupling test with nominal torque load lasting 8 hours. Check the temperature and condition of the coupling at the end of the test.
Conduct a coupling test with a 120% nominal torque load lasting 8 hours. Check the temperature and condition of the coupling at the end of the test.
Disassemble the coupling and check its mechanical condition.
The coupling temperature was measured using a thermal imaging camera and during the tests, there was no temperature rise which would indicate a potential problem with the drive the coupling was designed for. Moreover, the conducted tests showed no signs of mechanical damage of the elastic rubber element or aluminum coupling despite the fact that during certain parts of the tests the load torque value was (up to 50%) higher than the nominal torque of the coupling.
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Testing a Gumis coupling in Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture in Split, Croatia
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GUMIS d.o.o.

Zoranićeva 38, 21 210 Solin (Dračevac)
OIB: 24367277772
MB: 02837293

Business hours:
Monday – Friday: 8:00 – 16:00
Closed on Weekends
24/7 for Inquiry & Emergency

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