Helicopter Main Rotor Planetary Gearbox: Weight vs Torque Guide

The main gearbox of a helicopter is the most safety-critical planetary gearbox ever designed ¡ª it reduces the gas turbine engine speed, typically 20 000 to 35 000 rpm, to the main rotor speed of 200 to 400 rpm through a compound reduction of 50:1 to 100:1, all within...

Gas Turbine Auxiliary Planetary Reducer: Compact Power Overview

Gas turbines ¡ª whether in power generation, offshore platform duty, or industrial process driving ¡ª require a compact, reliable gearbox to drive their auxiliary systems from the main shaft at the correct speed. The accessory gearbox on a gas turbine distributes...

Hydroelectric Turbine Planetary Gearbox: Long-Life Drive Guide

Hydroelectric turbines connected to generators through a planetary gearbox represent one of the most demanding long-life drive applications in any industry ¡ª the Snowy Mountains Scheme, the Gordon Power Station in Tasmania, and the small run-of-river hydro stations...

Oil Pump Jack Planetary Gearbox: Heavy-Duty Drive Selection

The pump jack, also called a nodding donkey or beam pumping unit, is the iconic reciprocating surface drive for oil wells producing by rod pump ¡ª the horse-head shaped counterbalanced beam that rocks up and down, lifting fluid from depths of 300 to 3 000 m through a...