The per­fect over­load pro­tec­tion for hard-to-ac­cess drives

DEMM Engineering & Manufacturing - - PRODUCT WATCH -

With its EAS- re­verse, mayr power trans­mis­sion has de­vel­oped a new, dis­en­gag­ing torque lim­iter on which all func­tional pro­cesses can be au­to­mated through the drive. It is easy to han­dle, per­mits long run- out times and re- en­gages again through slow back­wards ro­ta­tion. A hous­ing also makes the clutch re­sis­tant to dust or spray water – and thus ideal for use in heavy me­chan­i­cal en­gi­neer­ing, says the man­u­fac­turer.

In case of rough op­er­at­ing and am­bi­ent con­di­tions such as dust, dirt, spray water, heat or cold, the drive lines, par­tic­u­larly in heavy me­chan­i­cal en­gi­neer­ing, are fre­quently en­cap­su­lated and there­fore hard to ac­cess. But these ma­chines in par­tic­u­lar re­quire re­li­able over­load pro­tec­tion. There­fore, mayr power trans­mis­sion as a lead­ing spe­cial­ist for clutches, cou­plings and brakes has now de­vel­oped with the EAS-re­verse a ro­bust, dis­en­gag­ing torque lim­iter which can with­stand both high loads and which au­to­mat­i­cally re- en­gages – which is ideal for drives with­out ac­cess pos­si­bil­i­ties for re- en­gage­ment.

RESID­UAL TORQUEFREE SEP­A­RA­TION ON OVER­LOAD

On the EAS-re­verse torque lim­iter, all func­tional pro­cesses can be au­to­mated via the drive alone. In case of over­load, if the torque ex­ceeds the value set on the clutch, a patented dis­en­gage­ment mech­a­nism sep­a­rates the in­put and out­put al­most resid­ual torque-free with high switch- off and repet­i­tive ac­cu­racy. The ki­netic en­ergy from the ro­tat­ing masses stored in the sys­tem can slow down freely. After re­spond­ing, the clutch can with­stand long drive run- out times. Through slow re­verse ro­ta­tion, the EASre­verse torque lim­iter re- en­gages au­to­mat­i­cally with­out the use of pneu­mat­ics or hy­draulics.

SIM­PLE AND FLEX­I­BLE

The new EAS-re­verse torque lim­iter by mayr power trans­mis­sion trans­mits the torque with ex­cep­tion­ally low wear (< 0.05°) and fea­tures hard­ened func­tional parts. It is easy to han­dle and rep­re­sents adapt­able, branch- optimised so­lu­tions with its numer­ous ver­sions and ad­di­tional char­ac­ter­is­tics. In this way, for ex­am­ple, the com­bi­na­tion with an elas­tomer cou­pling per­mits easy sep­a­ra­tion of the drive line by loos­en­ing a few screws, with­out the mo­tor or gear­box hav­ing to be dis­placed. In ad­di­tion, ap­pli­ca­tions with load-hold­ing out­puts can also be com­bined with a brake disk on the out­put side. The EAS-re­verse can also eas­ily be in­te­grated into a solid hous­ing with stan­dard IEC or NEMA di­men­sions. It is thus pro­tected against dust and spray water and re­sis­tant to ad­verse am­bi­ent con­di­tions. The new torque lim­iter al­ready cov­ers the first three con­struc­tion sizes with a torque range from 80-2500 Nm, and this range is now to be ex­tended with a fourth con­struc­tion size up to 5000 Nm and a bore di­am­e­ter of up to 100 mm. The EAS-re­verse pro­vides per­ma­nent pro­tec­tion for ma­chines and pro­tects them re­li­ably against over­load dam­age, thus en­sur­ing op­er­a­tional safety and max­i­mum pro­duc­tiv­ity. DE­TAILS, TONY RENNELL, SAECO BEARINGS & TRANS­MIS­SION PH: 09 634 7540, E- MAIL: TONY.RENNELL@MO­TION.CO.NZ

THE EAS-RE­VERSE WITH PATENTED DIS­EN­GAGE­MENT MECH­A­NISM IS A DIS­EN­GAG­ING CLUTCH WHICH RE-EN­GAGES AGAIN SIM­PLY THROUGH SLOW BACK­WARDS RO­TA­TION – IDEAL FOR DRIVES WHICH CAN­NOT BE AC­CESSED FOR RE-EN­GAGE­MENT PUR­POSES.

THE EAS-RE­VERSE IS EASY TO HAN­DLE AND PER­MITS LONG RUN-OUT TIMES. A HOUS­ING ALSO MAKES THE CLUTCH RE­SIS­TANT TO DUST OR WATER SPRAY.

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