Crane & Hoist Duty Helical Gearboxes
Helical drives built to crane duty — main hoist, auxiliary hoist, long travel and cross travel, in fabricated steel housings with profile-ground gearing.
Crane Duty
Built for Shock, Reversing and Repeated Starts
Crane drives are not ordinary drives. They start under load, reverse constantly, and take shock every time the hook picks up. Anand Gears builds these helical gearboxes to crane duty: a fabricated steel housing rather than a thin casting, case-hardened and profile-ground alloy steel gearing, and roller bearings sized for shock and reversing loads. Output shafts are solid, geared, or hollow, in horizontal or vertical orientation — covering main hoist, auxiliary hoist, long travel, and cross travel on EOT cranes.
Engineering Data
Stages and Ratio Bands
Indicative ratio bands by number of stages. Centre distance, housing and bearing selection are set by the duty — shock class, mechanism class, and the brake motor being paired with the drive.
| Stages | Ratio Band | Typical Crane Duty |
|---|---|---|
| Single stage | up to approx. 6:1 | High-speed travel drives |
| Two stage | approx. 6:1 – 25:1 | Cross travel and light hoists |
| Three stage | approx. 25:1 – 130:1 | Main and auxiliary hoists |
| Four stage | approx. 130:1 – 650:1 | Slow, high-torque hoisting |
What we need to size a crane drive
Send the safe working load, the hoisting or travel speed, the duty and mechanism class (M3, M5, M7 and so on), the motor rating and whether it is a brake motor, and the mounting arrangement. Ratio alone is not enough on a crane — the duty class decides the bearing and gear selection as much as the torque does.
Configurations
Crane Drive Configurations
The arrangements Anand Gears builds for crane and hoist builders.
Main Hoist Drive
Three or four stage reduction sized for the safe working load and the hoisting speed, with the brake motor pairing confirmed before build.
Auxiliary Hoist Drive
Lighter second hoist on the same crane, usually a three stage unit matched to the auxiliary load.
Long Travel Drive
Bridge travel along the runway — often a pair of drives running in step, with the shaft ends matched to the wheel arrangement.
Cross Travel Drive
Trolley travel across the bridge; two stage reduction with the shock class taken into the bearing selection.
Shaft-Mounted Hoist Units
Hollow output slid straight onto the drum or wheel shaft with a torque arm — the compact answer where the machine room is tight.
Vertical Output Arrangements
Output axis turned vertical where the drive layout calls for it, with seals and oil level changed to suit.
Where It Runs
Where These Drives Work
Crane and lifting equipment applications Anand Gears supplies.
EOT Cranes
Electric overhead travelling cranes in fabrication shops, foundries and warehouses.
Goods and Material Hoists
Vertical lifting duty where holding and controlled lowering matter as much as the lift itself.
Gantry and Semi-Gantry Cranes
Travel and hoist drives for yard and outdoor gantries.
Steel Plant Handling
Ladle, scrap and billet handling, where shock loading is constant and the housing has to take it.
Port and Yard Equipment
Material handling in dusty, wet and outdoor conditions.
Crane Rebuilds and Retrofits
Replacing a worn or obsolete crane gearbox on an existing crane, built to the original mounting.
Replacing an imported unit
Rebuilding or replacing an existing crane gearbox
Crane gearboxes usually need replacing long after the maker has stopped supporting them. Send the nameplate, the mounting dimensions, and the duty class, and Anand Gears will build a drive to the same mounting and ratio — or repair the existing one. We cut the gears in our own works, so a worn pinion or wheel can be replaced without scrapping the housing.
Budgetary offer — Crane & Hoist Duty Helical Gearboxes
Tell us the duty and we’ll send you a number
Power, input speed, and either the ratio or the output speed you need are usually enough to start. Our engineers reply on the same working day.
Have a nameplate photo, a drawing, or the old unit in front of you? Send it on WhatsApp — that is the fastest route to a number.
Prefer to talk? +91 98203 83719 or +91 98205 18093.