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Motors with integral gearbox

Motor with integral gearbox – this is an aggregate consisting of electric motor and reducing gear.
The planetary and helical gear motors made according to aligning hookup of mutual bracing of electric motor and output shaft have got the most diffusion in the industry, as well as the worm gear gearmotors with electric motor location for 90° to the output shaft.

To the motors with integral gearboxes of general engineering application there are referred:
• helical gear motors;
• planetary gear motors;
• spiroid gear motors;
• worm and helical-worm gear gearmotors;
• harmonic gear motors;
• special-purpose gear motors.

The motors with integral gearboxes are intended for the behavior S 1 according to GOST 183-74 from the ac network with the frequency 50 Hz and rated voltage according to GOST 21128-75 under following conditions:
- by fixed and variable load at amount (at the limits of admissible moment) and way by the rotation of the output shaft in any direction
- main climatic versions – У (category 2) according to СТ СЭВ 458-77 with an altitude above sea level to 1000 m (the motors with integral gearboxes can work at an altitude of more than 1000 m under the requirements GOST 183-740) the environment is non-aggressive, non-explosive, with the content of non-conducting dust to 10 mg/m³.

Recommendations by the selection of reducing gears and motors with integral gearboxes.
The selection of the reducing gear or motor with integral gearbox (hereinafter referred to as reducing gear) consists in the determination of performance specifications of its standard size according to the tables.
The reducing gears are operated under various work conditions, it is necessary to take into account by their selection, therefore the basic data for the selection of the reducing gear are:
– torsion torque, perceptible by the output shaft of the reducing gear and corresponding to normally running (steady) working of the gear, N.m;
– output shaft speed, n2, min -1;
– input shaft speed, n1, min -1 (or required gear ratio i);
– type of external load;
– duration of daily work;
– startup frequency;
– availability of reversing duty;
– startup mode of the reducing gear;
– type of used lubricant;
– ambient temperature;
– availability of resilient members (muffs, belts etc.) at the input and output shaft of the reducing gear. And also it should be taken into account required design features of the input and output shafts:
– one-sided or double-sided output shaft;
– hollow output shaft with splined bore;
– muff output shaft;
– output shaft with the end for the connection of control devices;
– tapered or cylindrical shaft end.