Pow­er Transmission 

If the ener­gy in a tech­ni­cal sys­tem is trans­mit­ted by the fric­tion­al forces gen­er­at­ed between belts and dri­ving wheels, this is referred to as non-pos­i­tive dri­ve ele­ments. These are used wher­ev­er no syn­chro­nous move­ment of the ele­ments is required and the dri­ve may or should have slip. For this area we offer, among oth­ers, V‑belts, V‑ribbed belts and flat belts. 

Flat belts have a rec­tan­gu­lar cross sec­tion and, like all non-pos­i­tive dri­ve ele­ments, trans­mit ener­gy exclu­sive­ly via fric­tion­al forces. The con­tact sur­faces of the asso­ci­at­ed dri­ve wheels usu­al­ly have upward­ly curved or raised edges to pre­vent the belts from slip­ping off the pul­ley. 

V‑belts are char­ac­ter­ized by their easy instal­la­tion and long ser­vice life and allow a high trans­mis­sion ratio. They are avail­able with sheathed or open-flank design and offer high­er trans­mit­table pow­er than flat belts. 

V‑ribbed belts have indi­vid­ual ribs which run length­wise to the belt itself. The larg­er con­tact sur­face on the V‑belt pul­ley results in greater fric­tion and thus a high­er pow­er trans­mis­sion than with ordi­nary V‑belts. They are very well suit­ed for the simul­ta­ne­ous dri­ve of aux­il­iary units.