low backlash planetary gearbox

Perhaps the most obvious is to increase precision, which really is a function of manufacturing and assembly tolerances, gear tooth surface finish, and the center distance of the tooth mesh. Sound is also suffering from gear and housing materials as well as lubricants. In general, expect to pay out more for quieter, smoother gears.
Don’t make the error of over-specifying the engine. Remember, the insight pinion on the low backlash planetary gearbox planetary should be able manage the motor’s result torque. What’s more, if you’re utilizing a multi-stage gearhead, the output stage should be strong enough to absorb the developed torque. Obviously, using a more powerful motor than required will require a larger and more expensive gearhead.
Consider current limiting to safely impose limits on gearbox size. With servomotors, result torque can be a linear function of current. Therefore besides safeguarding the gearbox, current limiting also protects the engine and drive by clipping peak torque, which may be from 2.5 to 3.5 times continuous torque.

In each planetary stage, five gears are simultaneously in mesh. Although you can’t really totally remove noise from such an assembly, there are several ways to reduce it.

As an ancillary benefit, the geometry of planetaries matches the form of electric motors. Thus the gearhead could be close in diameter to the servomotor, with the output shaft in-line.
Highly rigid (servo grade) gearheads are generally more costly than lighter duty types. However, for rapid acceleration and deceleration, a servo-grade gearhead may be the only wise choice. In such applications, the gearhead could be seen as a mechanical springtime. The torsional deflection resulting from the spring action increases backlash, compounding the consequences of free shaft motion.
Servo-grade gearheads incorporate several construction features to minimize torsional stress and deflection. Among the more prevalent are large diameter output shafts and beefed up support for satellite-equipment shafts. Stiff or “rigid” gearheads have a tendency to be the most costly of planetaries.
The kind of bearings supporting the output shaft depends upon the load. High radial or axial loads generally necessitate rolling component bearings. Small planetaries can often get by with low-price sleeve bearings or other economical types with fairly low axial and radial load ability. For larger and servo-grade gearheads, durable result shaft bearings are usually required.
Like the majority of gears, planetaries make noise. And the quicker they operate, the louder they get.

Low-backlash planetary gears are also available in lower ratios. Although some types of gears are usually limited to about 50:1 or more, planetary gearheads lengthen from 3:1 (one stage) to 175:1 or more, depending on the amount of stages.