High torque motors are practically only a regular, internally commutated brushless DC Motors mounted with additional gear mechanism at the top, to either raise the torque or to decrease the RPM (Revolutions each and every minute). These DC motors are tranquil effective and can be used in a number of hobbyist and industrial application.
Reducing the RPM whilst maintaining high torque would require adding up more technical gear mechanism therefore the expense of these High torque DC motors mainly depends on the RPM, torque and quality of the motors.The electric motor shaft from the base electric motor though a transmission connects the tiny gear box fixed at its front portion, which generates the necessary torque while keeping the RPM low, the whole gears and gear heads are doped with thick viscous grease lubricant.
These High torque Motors seriously different RPM’s such as, 5 RPM, 10 RPM, 100 RPM, 300 RPM, 1000 RPM and so forth. The expense of these geared motors is founded on the RPM, usually 
lesser RPM costs a lot more than those of higher RPM.
Applications
High torque and low rpm DC motors are ideal for robotic and hobby applications, thought how big is the electric motor is a matter of concern because it is quiet huge in size because of additional equipment box but still it would save the difficulty and cost of adding exterior gears to the assembly of robots where simply the regular DC motors wouldn’t prosper. The High Torque, Low RPM DC motors comes with inbuilt gearbox system providing necessary torque for your robotic software. Hence these motors would be the the majority of favorable Auto Chain choice for the hobbyist robotic tasks and tutorials posted right here.