When it comes to motion control, one particular motor type that has made great improvements and has high potential in various applications is the hollow shaft gearmotor. They are suitable for many uses in machine tools for packaging, papermaking, material handling, printing, and much more. They are applicable where direction should be reversed with great accuracy and where maintenance is not achievable with conventional motor and gearbox. This is specifically where synchronous torque motor becomes very important.
These hollow shaft gearmotors are built for high torque and precision that are needed at low speeds. They offer low installation and maintenance, as well as desirable component count and space allowance. They come in two major varieties. The one is the complete unit that requires only direct flange-mounting to the machine and the rotor to the machine shaft. This is usually found on feed heads on injection moulding machines, extruder main drives, wire drawing device, and cross cutters on packaging machines.
The second type is the built-in unit where both the rotor and stator are directly integrated into the machine mechanics. This gear motor is commonly used on printing press machines, indexing tables in metal fabrication, and all sorts of high-precision and speed control motor applications. Both of these hollow shaft gearmotors allow the mechanical components to be well-guided throughout the entire rotor cavity.
With their design, they offer a lot of benefits to users. They provide excellent rotational accuracy as well as repeatability because of load control, compact and space-saving design, lower footprint, low maintenance due to fewer mechanical parts, and high energy efficiency by eliminating mechanical losses.
Finally, because of their direct and constant control of the load shaft, without decoupling or backlash, these gearmotors offer considerably high precision in motion control. It’s for these reasons that they are preferably chosen in many industrial applications.