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Speed reducer Gearbox Caster hot rolling mill cold rolling mill
Hardened tooth surface Gear box
ZY-DY series products include ZDY, ZLY and ZSY types of parallel
shaft reducers and DBY, DBYK, DCY and DCYK types of vertical
transmission reducers.
3.1 ZDY, ZLY and ZSY types of reducers
ZDY, ZLY and ZSY types of external gearing involute cylindrical
gear reducers are in compliance of JB/T8853-1999. They are suitable
for metallurgical industry, mining industry, cranes, cement making
machineries, construction industry, chemical industry and light
industries, etc.
High-speed shaft of the gear reducer rotates slower than 1500r/min;
transmission circular speed of the gear reducer does not exceed
20m/s. ambient temperature is -40~45℃, and when the temperature is
below 0℃, warm up lubrication oil before starting the gear reducer.
Description of codes:
ZDY stands for single parallel gear reducer;
ZLY stands for two-stage parallel gear reducer;
ZSY stands for three-stage parallel gear reducer.
3.2 DBY, DBYK, DCY and DCYK types gear reducers
DBY, YK, DCY and DCYK types of vertical transmission gear reducers
are in compliance with JB/T9002-1999. Input shaft of this series
reducer is perpendicular to output shaft of the reducer. It is used
in such machineries like belt conveyers and different kinds of
transportation machineries. It can also be used in coil mining
industry, metallurgical industry, mining industry, chemical
industry, construction industry, light industry and petroleum
industry, etc.
Working conditions: gear circular speed does not exceed 20m/s;
input speed should be lower than 1500m/min; ambient temperature:
-40~45℃, pre-heat the lubrication oil before starting-up when
temperature is below 0℃.
Description of codes:
DBY stands for reducers with bevel gears on the first stage and
cylindrical helical gears on the second stage.
DBYK stands for reducers with bevel gears on the first stage,
cylindrical helical gears on the second shaft and hollow shaft on
the output side.
DCY stands for reducer with bevel gears on the first stage and
cylindrical helical gears on the other two stages.
DBYK stands for reducers with bevel gears on the first stage,
cylindrical helical gears on the other two stages and hollow shafts
on the output side.
QJY Type code & main data
Basic type | Smart type | Anchor bolt type | Hollow shaft type | Step | Driving ratio range | Power arrange | Center distance range |
QJY2 | QJYD2 | QJYA2 | 2 | 6.3-20 | 8.7-5717 | 140-800 | |
QJY3 | QJY23 | QJYD3 | QJYA23 | 3 | 20-100 | 2.9-1801 | 170-800 |
QJY34 | QJYD24 | QJRA34 | 4 | 100-400 | 0.72-360 | 170-800 | |
Basic type | Smart type | Anchor bolt type | Hollow shaft type | Step | Driving ratio range | Power arrange | Center distance range |
QJY2 | QJYD2 | QJYA2 | 2 | 6.3-20 | 8.7-5717 | 140-800 | |
QJY3 | QJY23 | QJYD3 | QJYA23 | 3 | 20-100 | 2.9-1801 | 170-800 |
QJY34 | QJYD24 | QJRA34 | 4 | 100-400 | 0.72-360 | 170-800 | |