QJ series Crane gear reducer

QJ series crane gear reducer

QJ series reducer is applicable for relative device of the crane, as well as for the driving gear of mechanical equipment used in transportation, metallurgy, chemical engineering and light industry.


Wide range of reduction ratio, nominal speed ratio 10-200%;

High efficiency of mechanical drive with Class II up to 96% and Class III up to 94%;

Running smoothly and low noise;

Gear wheel and gearshaft are made of low carbon steel 42CrMo or 35CrMo with forging and heat treatment, also with hardening and tempering for long service life and high carrying capacity;

Easy for dismounting, inspection and installation.

QJ series crane gear reducer1

Applicable conditions:

Circumferential speed of gear wheel<=16m/s;

Rotation speed of high speed shaft <=1000r/min;

Operating temperature:-40~45℃;

Operable both forwards and backwards;

QJ series crane gear reducer2

Types and speed ratio

Type speed ratio
QJR 10 12.5 16 20 25 31.5    
QJS,QJRS 40 50 63 80 100 125 160 200

Please download the Catalog of QJ gear reducer for more details, or contact us directly. Thank you.