DESIGN & DEVELOPMENT OF PLANETARY GEARBOX FOR BAR BENDING MACHINE

 Construction of buildings and fabricators requires bending bars. Due to human inability to bend metals to desired shape and angle, nowadays we need machines to produce quality products. Every function of humans is reduced by a machine. Bar bending machines are used for bending rods, strips, angles, and bars. Bar bending machines have been invented with the aim of reducing manpower, time and work difficulties. But still, small construction workers prefer to manually bend the bar due to the high cost of the machines, difficulty in handling and maintenance.



The main components of bar bending machines are motor, gearbox, extended shaft, hub, coupling, belt pulleys, etc. Used gearboxes can be helical, planatory, worm, etc.

In order to develop gearboxes for bar bending machines, Top Gear Transmission conducted in-depth research about the functioning, objectives and limitations of current bar bending machines. To increase the functioning of the bar bending machine, Top Gear came up with a solution, such as a planetary gearbox for the glandry gearbox due to various advantages such as compactness, high torque transmitting capacities, efficiency, low noise and maintenance of the planetary gearbox. Use. . Our goal was to develop and design a planetary gearbox chain for bar bending machine to bend a strip of any free size with the aim of achieving high production rates with low bending and high desired accuracy.



Based on the size of the bar, we calculated the power and torque required to bend the bars of different sizes. The planar gearbox chain for bending the bar is designed in such a way that, the torque generated by the gearbox is sufficient to bend the strip of dia adequately. 12 mm to 48 mm easily. Top Gear designs a special planetary gearbox with a hollow output shaft with single or double keyways to which the banding wheel of the machine is connected. This arrangement eliminated the need for other connecting parts as a result of a simpler construction. Such gearboxes are offered with flange mounting for direct attachment to the motor to eliminate the belt pulley arrangement. This drive is supplied with a long life synthetic lubricant.


  • Main features such as our receptive series series,
  • Can be offered in several input and output configurations.
  • Wide range of cut ratio and high torque transmission
  • Modular construction
  • Interchangeability of parts
  • Co-axial drive
  • High overhang load capacity
  • Special series available with taper roller bearings to take care of high radial and thrust loads
  • high efficiency
  • Low maintenance and noise

Made us buyers first choice for bar banding machines. As a result we are serving various major OEMs involved in manufacturing bar bending machines. The development of the granary gearbox series for this application served as a simple solution for bar bending machines that were very easy to install and simple to manufacture. This drive increased the efficiency of the bar bending machine and reduced the number of parts thus reducing the cost. High torque was available due to the use of multiple planets in planetary drive. This drive resulted in increased production capacity of the equipment manufacturer.

Today, Top Gear transmissions are recognized as the leading manufacturers of planetary gearbox Manufacturers  in Satara offering a wide range of industrial gearboxes.

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