A gearbox (gear unit) reduces motor speed and multiplies torque to drive your machine. Bonfiglioli is one of the world’s leading gear-unit makers, and two families cover most industrial drives: planetary gearboxes and bevel-helical gearboxes. This guide from Twin Hydraulics Engineering, a Bonfiglioli supplier in Malaysia, explains the difference and how to choose.
Planetary gearboxes (Bonfiglioli 300M series)
Planetary gear units share the load across several planet gears, so they pack very high torque into a compact, in-line package. That makes them ideal for high-torque, space-constrained duties such as winches, mixers, slew drives and heavy mobile equipment. If you need maximum torque density in a small footprint, start with the planetary gearbox (300M) range.
Bevel-helical gearboxes (Bonfiglioli 3/H series)
Bevel-helical units combine bevel and helical gear stages to turn the drive through a right angle, with high efficiency and quiet running. They suit conveyors, agitators, fans and process machinery where the motor and driven shaft sit at 90°. Browse the bevel-helical gearbox (3/H) range.
How to choose
- Layout — in-line drive points to planetary; a right-angle drive points to bevel-helical.
- Torque and ratio — the output torque and speed reduction your application needs.
- Duty and mounting — service factor, shaft/flange arrangement and operating environment.
- Motor interface — IEC motor adaptor or direct mounting.
Share your ratio, output torque and mounting and we will recommend the right unit. Both families are part of our gearbox range.
Talk to our drive specialists
We are specialists in complete drive systems — we can design, supply and repair gear units. Request a quote on WhatsApp.





