variable speed gearbox

Gearboxes and velocity reducers are mechanical quickness reduction equipment found in automation control systems.

Velocity reducers are mechanical products generally used for just two purposes. The principal use is to multiply the amount of torque generated by an input power source to increase the quantity of usable work. They also reduce the input power resource speed to attain desired output speeds.

Gearboxes are used to increase torque whilst reducing the quickness of a prime mover output shaft (a engine crankshaft, for example). The result shaft of a gearbox rotates at a slower rate compared to the input shaft, which reduction in velocity produces a mechanical advantage, raising torque. A gearbox could be set up to accomplish the opposite and offer a rise in shaft swiftness with a reduced amount of torque.

Enclosed-drive speed reducers, also known as gear drives and gearboxes, have two main configurations: in-line and right angle which use various kinds of gearing. In-line versions are commonly made up of helical or spur gears, planetary gears, cycloidal mechanisms, or harmonic wave generators. Right angle designs are typically made out of worm gearing or bevel gearing, though hybrid drives are also available. The type of app dictates which rate reducer style will best satisfy the requirements.
D- Drive is a variable acceleration geared motor, robust stage less unit ideal for various industrial applications.The unit is designed to provide low output speed at corresponding high output torque. The drive unit is manufactured from standard elements and comprises of AC squirrel cage motor, variable rate drive and gearbox with case hardened profile surface helical gears. It could be easily adapted to any machine design. The unit is quite compact and save time and money because they are ready to match drive modules. The inside part of this drive is the variable rate pulley Variable Speed Gearbox enclosed in a housing and connected to the gearbox and motor. The speed variation may be accomplished by means of a hand wheel. Average life to be likely is about a decade before major maintenance. Belt life is based on app and environment. General experience is about three to four 4 years life.
The Ring-cone is a mechanical adjustable speed drive utilizing a ring and cone friction power train – therefore the name. The internal drive assembly includes an input disc, a set of planetary cones, a control ring, the cam disc and a pressure control cam. The Ring-cone offers different sizes to handle electric motor power ranging between 1/4HP – 20HP, and nominal output torque rankings spanning 15 – 130,000 in-lbs. This original drive offers a speed selection of 0 – 800 RPM, and a cam mechanism that adjusts to the environment downstream and will withstand a certain quantity of shock load.

With a variable frequency drive, the output torque continues to be constant from base speed down to the low limit, whatever it might be for the application. Nevertheless, with the Ring-cone mechanical variable speed drive the result torque increases as the acceleration drops. At the reduced speed range, the result torque approaches 500% of the electric motor rating providing large breakaway torque ideals. The mechanical drive is also capable of handling a 200% overload capacity throughout the entire speed range. This efficiency advantage allows an individual to set a low speed that can help the drive package push through difficult areas.
For lower swiftness/higher torque applications, some Zero-Max drives can be found with our right angle gearbox. Some Zero-Max drives may be purchased with regular electric motors or they may be connected to any rotating power source up to 2000 RPM. Adjustable speed drive quickness adjustments are easily made by moving a lever control through an arc or turning the hand-wheel of a screw type control. In either case, easy and exact speed control configurations are feasible with Zero-Max adjustable rate drives – also described interchangeably as variable acceleration drives.


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