Wednesday 30 May 2012

Choosing combination of gear motors

The combination of gear motor to be chosen depends on the power you actually need to run you machine. If the gear motor can supply the required power then it is fine to choose. Here power means the typical speed and torque operating for the system. Usually, choosing the smallest and lightest is better, which you can also find at lower cost. But, make sure that you keep the constraint of voltage supply in your area in mind, so that your motor can run on that voltage and consume electric current in moderate amount.

Motors efficiently convert electric power into mechanical power at higher speed. Conversely, gearboxes have lower efficiency having larger gear ratios than gearboxes with smaller gear ratios. So, efficiency should be your concern until and unless it is a serious issue for you. Once the motor has been chosen, it is times to select gearbox for the motor. Motor with gearbox combines speed with torque, both in maximum amount. Ensure that the specification of gearbox output shaft maximum torque is in adequate amount. 

Ideally, motor should not be run continuously for hours as there are chances that the motor will overheated. It is better to stall periodically and then use again. The dependency of allowable continuous process area of the speed torque is on thermal characteristics of gear motors. But practically no one wants nonstop operation at less than ¼th or ½ of the maximum motor’s speed. If speed is really your concern, choose larger motor for the required specification.  

Thursday 17 May 2012

What are Industrial Gear Motor Units?

Industrial gear motor units are often used where high powered and heavy duty performance is needed. The units are available as stand alone machines or integrated systems and are perfect for use where other machinery cannot stand up to the difficult conditions of high torque demand and long term reliability. The integrated systems come complete with brakes, frames and other components for a fully incorporated drive system.

Industrial gear motor units can be used for a wide variety of demanding applications across industries as varied as food processing and mining. Some common features of the units are a durable gear casing, efficient and effective cooling systems to prevent overheating and breakdown, universal mounting and a high level of customisability and flexibility to ensure the gear motor unit works well with each different application.

Some individual industrial motor unit models are developed for specific applications and processes across all industries. One example can be seen in the products developed for providing power to overhead trolley systems. These industrial drive units provide power, speed and control for both lightweight and heavy duty systems.

Specially designed industrial power units offer benefits previously unheard of in industrial processes. These advantages include higher working loads in all areas of the industrial process, energy efficiency, high accuracy and precise control over speeds as well as more complete automation.

All of these benefits complement the heavy duty capabilities of industrial gear motor units, making them suitable for complex and demanding applications such as mining conveyors, crushers, agitators and shipping cranes.

Tuesday 13 March 2012

Should You Choose AC or DC Gear Motors?

Gear motors are useful for providing a high rate of power at a range of different speeds, making them suitable for many different purposes, from minor applications such as intricate clockwork to massive industrial lifting. Whether you choose an AC or DC machine will depend on your particular application.

AC devices have a very simple construction, making them an economical choice in many situations. They are very commonly used across different industries, but still pose many disadvantages for the user or operator. While AC devices are very effective at high speeds, DC gear motors should be used whenever a low speed is required.

In many cases, the use of an AC or DC machine is largely interchangeable, although performance can usually be improved by selecting exactly the right motor for the machine. This includes choosing between an AC or DC device as well as choosing the right size of motor for your power and energy efficiency requirements.

Because the integrated gear box is designed to provide a high torque at a low speed, DC gear motors are often the highest performing option. These machines are able to provide a variety of different torque to speed ratios, meaning that precise movement and placement is easy in applications such as automotive, mechanical and industrial powering.

If you need reliability from your machine, even in tough conditions such as food processing or boating, then an AC device may be the right choice for you. Because of an overall simple construction, AC gear motors are generally more durable and suitable for constant operation over a long period of time.

Wednesday 16 November 2011

What Is A Gear Motor?

What do powered can openers, stair lifts, garage door opening mechanisms, cake mixers and powered drills all have in common? The answer is that they all use some form of a gear motor in order to work.

But what is a gear motor? Basically, it consists of an electric motor and a reduction gear train (a small gear driving a larger gear) that have been combined to create one very easy to use little package. It is used in applications that call for the use of high torque at a relatively low shaft speed (or RPM).

Reduction gear trains are used in gear motors to reduce the output speed while at the same time increasing the torque. What this does is allow small electric motors to move larger loads, even if they do move them a little slower. These applications can range from large (lifting a building) to tiny (turning the hands of a clock).

The incorporation of a gear motor is sometimes necessary to reduce the speed of the rotating shaft within a particular device. Take an electric clock, for example: the motor will be spinning at its usual RPM, but must be slowed down to drive the second hand around the face, and slowed down again to drive the minute and hour hands. This could not be achieved without the use of gears within the clock’s mechanism.

The other reason a gear motor may be incorporated is to create the ability to use a small motor to generate a large force (keeping in mind it will still be at a low speed). Take a generic hospital bed, for example: a patient will need to be lifted or lowered accordingly, meaning the motor has to move both the heavy bed and the patient, but this cannot be done too fast without risking upset to the patient. This is easily achieved through the use of gears.