Gearboxes antibacterial & high corrosion resistance GHA TRAMEC
Tramec has developed an innovative range of products applying, for the first time in the world, the "GHA" treatment on gearboxes.
These worm and bevel helical gearboxes, with aluminum alloy housing, are equipped with stainless steel hollow output shaft, bolts and plugs.
The most important feature, which makes these gearboxes unique, is the innovative patented treatment called "GHA" applied to the external and internal surfaces of the housings, which confers extraordinary chemical and physical properties.
The GHA gearbox line is an exclusive Tramec patent.

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Antibacterial Properties Thanks to the action of silver ions evenly distributed over their surface, the GHA gearboxes boast unique antibacterial characteristics, confirmed by tests carried out by accredited laboratories in compliance with ISO 22196: 2011, which make them ideal for use in aseptic environments (food and pharmaceutical sector); |
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Corrosion resistance The excellent results of NSS salt spray tests performed by accredited laboratories in accordance with ISO 9227: 2017 standard confirm that the GHA Premium gearboxes are ideal for use in the marine environment; |
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High thermal conductivity Heat dissipation capacity 35% higher than untreated aluminum and 13 times higher than stainless steel; |
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High surface hardness High hardness of the body surface of the Premium series with GHA treatment (HV 500-600). |
GEARBOX CLEANING
The numerous laboratory tests on the new GHA Premium line, commissioned by TRAMEC to accredited laboratories, also include tests relating to the cleaning of the gearboxes. To confirm the durability of the surface treatment properties over time, compatibility tests were performed with the active ingredients of the most common industrial detergents.
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Premium
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- GHA worm gearboxes;
- Excellent bactericidal properties;
- Excellent corrosion resistance (over 2016 h in NSS test);
- Special smooth external profile subject to enhanced GHA treatment,
- minimizes the deposit of dirt and allows better cleaning;
- High hardness of the body surface with GHA treatment (HV 500-600);
- High abrasive wear resistance;
- High thermal dissipation;
- AISI 316 stainless steel hollow output shaft, bolts and plugs;
- FDA certified food grade lubricant, oil seals and gaskets;
- Compliant with HACCP Australia / NZ.
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Classic
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- GKC worm gearboxes and GTF bevel helical gearboxes;
- Excellent bactericidal properties;
- Standard corrosion resistance (250 h in NSS test);
- Same housings of the standard KC and TF models, subjected to GHA treatment;
- AISI 316 stainless steel hollow output shaft, bolts and plugs;
- FDA certified food grade lubricant, oil seals and gaskets;
- Compliant with HACCP Australia / NZ
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Modular
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- GXC worm gearboxes;
- Excellent bactericidal properties;
- Standard corrosion resistance (250 h in NSS test);
- Same housings of standard XC models, subject to GHA treatment;
- AISI 316 stainless steel hollow output shaft, bolts and plugs;
- FDA certified food grade lubricant, oil seals and gaskets;
- Compliant with HACCP Australia / NZ
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Thanks to the partnership with company Carpanelli S.p.A., on request the GHA series gearboxes can also be supplied in combination with special, dedicated electric motors, also subjected to GHA treatment and available in two configurations: Classic and Premium |
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Moteurs PREMIUM
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- Excellent antibacterial properties;
- Excellent corrosion resistance (over 2016 h in salt spray NSS tests);
- IE4 energy class and IP69K protection;
- V. 230/400/50 - S1 - B14;
- AISI 420 stainless steel output shaft;
- Special aluminum alloy housings subject to enhanced GHA treatment;
- Smooth outer profile minimizes the deposit of dirt and allows better
- cleaning;
- More hygienic thanks to the absence of a fan;
- High hardness of the GHA-treated surface (HV 500-600);
- High resistance to abrasive wear;
- Excellent thermal dissipation;
- High efficiency;
- Withstand high voltages, thanks to the non-magnetic characteristics;
- Stainless steel nuts and bolts
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Moteurs CLASSIC
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- Excellent antibacterial properties;
- Standard corrosion resistance (250 hours in salt spray NSS);
- IE1 energy class and IP55 protection;
- V. 230/400/50 - B5 or B14;
- Standard housings in die-cast aluminum alloy with GHA treatment;
- Finned external profile;
- Good thermal dissipation;
- Stainless steel nuts and bolts;
- Nylon fan cover.
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What are the advantages of GHA gearboxes compared to stainless steel gearboxes or subjected to other treatments?
Thanks to the special properties conferred by the patented treatment to which they are subjected, gearboxes and motors of the GHA series are an excellent alternative to those exclusively made in stainless steel or treated with other processes (i.e. nickel plating or special paintings).
Download the Tramec GHA FR- EN