JIANGSU JINTAIXIN REDUCER CO.,LTD

PRODUCT CENTER

QJ medium-hardened cylindrical crane gearbox

QJR-D foot-mounted cylindrical crane gearbox

QJS three-point-supporting crane gearbox/gear speed reducer

QJRS three-point-supporting crane gearbox/gear speed reducer

QJ-L vertical-mounting solid shaft output crane gearbox/gear speed reducer

-QJ series is medium-hardness-tooth crane gearbox, include three type: QJ type (including QJR-D, QJS-D, QJRS-D, QJR, QJS, QJRS), QJ-L vertical-mounting type, QJ-T vertical-mounting type. QJ series are mainly used as drive units for crane or hoisting, also widely in metallurgy, mining, cement, cranes, conveyors, textile, and chemical industry, etc. The gearboxes can be supplied as motor gearbox units assembled on baseplates for convenience. Electromagnetic brakes, back stops, clutches, couplings and other mechanical devices can be incorporated in the design to give a complete drive unit. Thanks to outstanding quality and low price, this series are well-accepted by our customers.

- Structures: horizontal foot-mounted, vertical mounting, and outputs can realize solid output shaft, hollow output shaft;

- Gears made of high-quality low-carbon alloy steel 35CrMo, gear shafts made of 42CrMo, output shaft made of alloy steel 40Cr, the gearbox housing made of high-strength casting iron HT250, may also adopt better material as requested;

- High efficiency up to 98%per stage, low noise <70-80dB, and temperature rise <45-55℃, and high precision grade up to 6 or better of ISO1328;

- Gears and gear shafts through carburizing and quenching to improve stability and transmit power more efficiently, gearbox housing through aging treatment then annealing to relieve stress twice, therefore the bearing capacity very high;

- Best China bearings used on products, may apply other bearings like SKF, NSK and FAG, and double-lip oil seal make sure no oil leak;

- Every gearbox 100 percent tested prior to delivery;

QJ-L vertical-mounting with solid shaft output

QJ-T vertical-mounting with hollow shaft output

applications

QJR-D foot-mounted cylindrical crane gearbox for hydropower station

QJRS three-point-supporting crane gearbox for bridge crane

QJR-D foot-mounted cylindrical crane gear speed reducer for overhead travelling crane