Taking into account that the pulley of the trolleys constantly move on the cable, and rotate on it, a balance must be achieved between the material of the pulleys and the material of the cable, since we recommend that the pulleys be the element that is changed in maintenance processes and not the cable as such, since it is a process that requires more time and economic investment.

Continuing with the similarity in the trains, it is usual for them to change the wheels and not the rails, with the same philosophy the cableways should work.

We understand the hardness as the opposition offered by the materials to physical alterations such as penetration, abrasion and scratching, there is a mistaken belief about the hardness and the material of the pulleys of the trolleys, in which it is common to hear that the user requests “hard wheels”, although this prolongs the useful life of the pulleys, the truth is that being a “hard” element in constant movement on the cable, it manages to accelerate the wear process of the cable, thus exposing the system to cable breaks, material damage, work accidents and production stoppages.

Our pulleys are made of gray iron with a 5% ferrosilicon alloy, this allows us to have a material that, when worn, due to its laminar formation, deposits its graphite on the cable, further protecting the cable as such.

Preventive maintenance of trolleys

An adequate preventive maintenance plan in the trolleys, allows its optimal operation, we recommend having the following habits:

In morroca-type trolleys

• Constantly apply grease to the steel balls, in our factory we use Gadus V220 (Shell) grease
• Adjust the hexagon cones in such a way that the steel balls rotate freely but are not allowed to come out of the hub cup.
• Remove excess grease, dust, mud and other elements from the pulleys and hooks
• Check the condition of links and rings in the chains
• Once high wear is detected in the pulleys channel, change the part
• Check tightening of nuts and bolts

In “maintenance free” type trolleys

• Never immerse them in acpm, diesel, gasoline, solvents, fuel or similar
• Adjust the threaded stepped bushings to secure the position of the bearing and the pulley in the skid.
• Check that the pins (i-32 safety rings) are properly installed to prevent the bearings from coming out
• Remove excess grease, dust, mud and other elements from the wheels and hooks
• Check the condition of links and rings in the chains
• Once high wear is detected in the pulley channel, change the part
• Check tightening of nuts and bolts

It is important to point out that the optimal condition of the trolleys allows the system to work correctly, thus avoiding accelerated wear of the other parts of the system (double clip, entry/exit tangencies, joints, curves, etc… ).

Find in our garruchastro brand, a complete catalog of spare parts for trolleys, as our designs are partially repairable, which sallows you to maintain this mobile element in optimal shape without having to buy new pulleys every time.

Spare part catalog

Get to know our trolley maintenance process in our factory