English 
English  |
Crane Gearbox used for each of related mechanism on the hoist, also for the transmission of mechanical equipment in transportation, metallurgy, mining, chemical industry, and light industry with working condition as follows:
1)Peripheral speed of the gear wheel does not exceed 20m/s
2)Rotating speed of high speed shaft does not exceed 1500r/min
3)Working ambient temperature is"+45 C
4)Both forward and backward rotation are available
| Quantity: | |
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Taixinglong
Classification and application scope of reducer
QY series reducer includes hard tooth face reducer for type QYS (3-supporting-point and type QYD (pedestal type)hoists. It has 3-step, 4-step and 3 and 4 combined type, see figure 1 for structural diagram.
Main features
Based on the working characteristics of each mechanism on the hoist, scope of transmission rate, less specification is used to meet various requirements of the users while improving product performance with the features as follows.
1)Higher carrying capacity. The gear wheel is treated with carbonization, quenching, gear grinding to get much higher carrying capacity than soft tooth face and medium hard tooth face reducer treated with hardening, tempering and hobbing.
2)Compact and light-weighted. Compared with soft tooth face and medium hard tooth face declerator, the reducer with the ame carrying capacity will have decreased pedestal number by 24 equivalent.
3)Higher efficiency, lower noise, and lower vibration. Gear grinding is introduced to increase grade of precision, and also thebrim of gear wheel is trimmed, so the general efficiency of each step of hoist is 0. 98, with much lower vibration and noise.
4)Multiple steps are introduced to decrease single step transmission ratio so as to widen the center distance, to decrease the overall height of the reducer is up to 400 to meet the requirement of slow speed hoist 53-supporting-point reducer can be installed vertically, horizontally, or in deflection by certain degrees, with much convenience and flexibility.
6)This series of reducer has 3 and4-step combined type. (i.e., assembly form of 3-step with the transmission ratio of 4-step,providing the precondition for generalizing slow speed hoist.
Technical Parameter
Shell material | Q235 steel plate welding /HT200-250 |
Gear material | 20CrMnTi/20CrMnMo |
Gear surface hardness | HRC58-62 |
Gear core hardness | HRC33-40 |
Output shaft material | 42CrMo/40Cr |
Output shaft hardness | HB260-290 |
Gear machining accuracy | 5-6 grade precision gear grinding |
Lubricant | GB L-CKC220-320 |
Heat treatment | carburizing, quenching, etc. |
Efficiency | 94%-98% (depending on the transmission stage) |
Noise (maximum) | 60-76 decibels |
Temperature rise (maximum) | 40℃ |
Temperature rise (oil) (maximum) | 50℃ |
| Vibration | ≤20μm |
| Error | ≤20Arcmin |
| Bearing brands | SKF，FAG，NSK |
| Oil seal brand | NAK - Taiwan or other brand requirements |
Assembly form
The two series reducer have same assembly form as follows
Shaft end modc
High-speed shaft end uses cylindrical shaft extension with flat key for connection ow-speed shaft end has 3 forms available as follows
a Type P: cylindrical shaft extension, flat key, single key for connection
b Type H: cylindrical shaft extension, involute spline for connection
c Type C: gearwheel shaft end (only the reducer with nominal center distance of 180-560mm has gear wheel shaft end). See figure 5 and table 1 form and dimension of low-speed shaft end
Model and notation
QY3S External and installation dimensions
QY3D External and installation dimensions
Production Ability
NILES ZE400 Gear Grinding machines |
Machining Center imported from Korea |
Digital Shaped Gear Grinding Machines |
workshop |
Metalworking Workshop |
Heat treatment plant |
Slant bed type CNC lathes |
CNC hob sharpening grinding machine |
Circular grinding machine |
Classification and application scope of reducer
QY series reducer includes hard tooth face reducer for type QYS (3-supporting-point and type QYD (pedestal type)hoists. It has 3-step, 4-step and 3 and 4 combined type, see figure 1 for structural diagram.
Main features
Based on the working characteristics of each mechanism on the hoist, scope of transmission rate, less specification is used to meet various requirements of the users while improving product performance with the features as follows.
1)Higher carrying capacity. The gear wheel is treated with carbonization, quenching, gear grinding to get much higher carrying capacity than soft tooth face and medium hard tooth face reducer treated with hardening, tempering and hobbing.
2)Compact and light-weighted. Compared with soft tooth face and medium hard tooth face declerator, the reducer with the ame carrying capacity will have decreased pedestal number by 24 equivalent.
3)Higher efficiency, lower noise, and lower vibration. Gear grinding is introduced to increase grade of precision, and also thebrim of gear wheel is trimmed, so the general efficiency of each step of hoist is 0. 98, with much lower vibration and noise.
4)Multiple steps are introduced to decrease single step transmission ratio so as to widen the center distance, to decrease the overall height of the reducer is up to 400 to meet the requirement of slow speed hoist 53-supporting-point reducer can be installed vertically, horizontally, or in deflection by certain degrees, with much convenience and flexibility.
6)This series of reducer has 3 and4-step combined type. (i.e., assembly form of 3-step with the transmission ratio of 4-step,providing the precondition for generalizing slow speed hoist.
Technical Parameter
Shell material | Q235 steel plate welding /HT200-250 |
Gear material | 20CrMnTi/20CrMnMo |
Gear surface hardness | HRC58-62 |
Gear core hardness | HRC33-40 |
Output shaft material | 42CrMo/40Cr |
Output shaft hardness | HB260-290 |
Gear machining accuracy | 5-6 grade precision gear grinding |
Lubricant | GB L-CKC220-320 |
Heat treatment | carburizing, quenching, etc. |
Efficiency | 94%-98% (depending on the transmission stage) |
Noise (maximum) | 60-76 decibels |
Temperature rise (maximum) | 40℃ |
Temperature rise (oil) (maximum) | 50℃ |
| Vibration | ≤20μm |
| Error | ≤20Arcmin |
| Bearing brands | SKF，FAG，NSK |
| Oil seal brand | NAK - Taiwan or other brand requirements |
Assembly form
The two series reducer have same assembly form as follows
Shaft end modc
High-speed shaft end uses cylindrical shaft extension with flat key for connection ow-speed shaft end has 3 forms available as follows
a Type P: cylindrical shaft extension, flat key, single key for connection
b Type H: cylindrical shaft extension, involute spline for connection
c Type C: gearwheel shaft end (only the reducer with nominal center distance of 180-560mm has gear wheel shaft end). See figure 5 and table 1 form and dimension of low-speed shaft end
Model and notation
QY3S External and installation dimensions
QY3D External and installation dimensions
Production Ability
NILES ZE400 Gear Grinding machines |
Machining Center imported from Korea |
Digital Shaped Gear Grinding Machines |
workshop |
Metalworking Workshop |
Heat treatment plant |
Slant bed type CNC lathes |
CNC hob sharpening grinding machine |
Circular grinding machine |
