Motor speed and torque (1)

If it is used in a low-speed occasion of tire recycling machine, can it be used only with a normal low-speed motor? Or use a servo motor?

It is of course impossible to use only a normal low-speed motor of tire recycling machine because:

1) The speed is generally not up to: in general, the ratio of the reducer can be as low as 3:1 or even smaller, or higher than 180:1 or even larger.

That is to say, when the normal motor speed is 1380 rpm (4-pole motor), the output speed of the reducer can be as high as 460 rpm or even larger, or as low as 7.6 rpm or even smaller. Can ordinary motors achieve such a large shift range? Even for multi-pole variable speed motors, the fastest 2-pole motor speed is about 2880-2970 rev / min, and the lowest-speed 12-pole motor speed is about 480-490 rev / min. If you only need tens of revolutions per minute, ordinary motors will be even worse.

2) Ordinary motor of tire recycling machine torque is generally not up to: the load required to run at low speed, generally requires relatively large torque (such as elevators, elevators, production lines, winders, etc.), even The speed of ordinary motors meets the requirements, and the torque often does not meet the requirements. Note that the tire shredder machine rail is prone to "crawling" at low speeds.