Conveyor Gearbox
A conveyor gearbox is a reducer that drives the head pulley of a belt, chain, apron or screw conveyor, converting motor speed into the slow, high-torque output needed to move bulk material continuously. It is most often a parallel-shaft helical or right-angle helical-bevel unit, foot- or shaft-mounted, selected to an AGMA service factor that reflects the conveyor's load uniformity, starting torque and daily run hours. Because conveyors run for long unbroken periods and can see surge and choke loads, the gear set and thermal rating are sized to that continuous, sometimes shock-laden duty rather than to peak torque alone.
Conveyor drives span ratios from about 5:1 to over 100:1 across one to four stages, power from a few kW to several hundred kW, output speeds in the tens to low hundreds of rpm, and helical efficiency near 97-98% per pass. Rating follows AGMA 2101/ISO 6336 with enclosed-drive practice to AGMA 6010/6013 (which explicitly covers conveyor and screw-conveyor drives) and gear quality to ISO 1328 / AGMA 2015. Service class I/II/III selection sets the minimum service factor against shock.
Gears are case-hardened, ground alloy steel (20MnCr5 / 18CrNiMo7-6) in cast-iron or fabricated housings on SKF/FAG-equivalent bearings, with backstops for inclined conveyors and seals suited to dusty plant.
Integration covers IEC motor adapter or free input shaft, solid or hollow output with shrink disc, foot or shaft mounting, backstops, and mineral or synthetic PAO ISO VG 220/320 lubrication, with service factor set to load class, ambient and run hours.
Himalay's MSME partners manufacture conveyor gear drives with gear-rating to AGMA/ISO 6336, ISO 9001 quality systems, load and efficiency test reports and traceability; CE (Machinery Directive), ATEX/IECEx for hazardous areas, and SABER (Saudi Arabia) coordinated as part of the standard order flow.
