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ZLYJ Gear Speed Reducer

ZLYJ Gear Speed Reducer

ZLYJ Gear Speed Reducer is suitable for the transmission device with output shaft and input shaft laying verticality. This speed reducer we manufactured in China is mainly applied on belt conveyer and some other transportation machines and it can also be used on other general mechanical transmission organs of metallurgy, mining, chemical, coal, construction material, textile, oil /petroleum and so on.

I. Introduction of ZLYJ Gear Speed Reducer
ZLYJ series gearbox is designed specially for plastic and rubber screw extruder. It composed of high-precision gear and force-plate power transmission device. The main character of ZLYJ series gearbox is high strength alloy steel that being used for gear and shaft parts. Gear goes through processes of gasification, quenching, and grinding. Its precision could meet GB10095-88, DIN 6. Hardness of gear surface could be HRC54-62. A big size thrust bearing uses in the output part, which can bear axial shaft force of screw. ZLYJ series gearbox also boasts its compact design, high bearing load, smooth transmission, low noise and high efficiency.
II. Working Conditions of ZLYJ Gear Speed Reducer
A. The high speed shaft should round no more than 1500rpm.
B. The circumferential velocity of gear should no more than 20m/s.
C. Working environment temperature is -40—45℃. Lubricant should be heated up to 0℃ if temperature lowers than 0℃.
D. ZLYJ series gearbox could be rounded in a clockwise and un-clockwise direction.
BUT for High speed shaft with single direction oil pump, its usual direction
will be output shaft clockwise when facing the output shaft. Please contact
us if otherwise.
III. Type
Model: ZLYJ 225-12.5-I (Ⅱ.Ⅲ.Ⅳ.Ⅴ.Ⅵ.Ⅶ.
VI. ZLYJ: Code of gearbox
225: size
12.5: ratio
I: assembly type
IV. Selection of Gearbox
No.1: Ratio (see Table 1)
If input speed n1=1000rpm, output speed n2=70rpm
Ratio i=n1/n2=1000/70=14.28, then choose ratio 14.
No.2: Size (see Table 1)
Size is selected by required input power and output speed
Input power P=26kw,
Check table 1, 29.2kW＞26KW, get ZLYJ200.
No. 3: Assembly Type (see Drawing 1)
No. 4: Shaft force
Fa=∏*ds2 *PS/(4*1000)
Diameter of screw ds=75mm, force of screw PS=26MPa
Force Fa=∏*752 *26/(4*1000)=114.8KN
187KN＞114.8KN, ZLYJ200 can bear this shaft force
No. 5: Confirm the connecting dimension(See drawing 1, Table 2)
1. Check diameter, key width or spline, depth of output shaft
2. Check dimension of mounting hole and force plate screw hole
No. 6: confirm cooling method
Usually, small sizes adopt using splash lubricant, or natural cooling.
Big sizes adopt force lubricant and cooling devices. Please contact us if otherwise.
Size ZLYJ112 ZLYJ133 ZLYJ146 ZLYJ173 ZLYJ200 ZLYJ225 ZLYJ250
Force KN 41 54 60 153 187 250 268
Size ZLYJ280 ZLYJ315 ZLYJ330 ZLYJ375 ZLYJ420 ZLYJ450 　
Force KN 356 403 448 495 545 590 　
Recommend Devices
Size 112 133 146 173 200 225 250 280 315 330 375 420 450
Ratio 8 8 10 10 12.5 12.5 16 16 16 16 16 16 20
Screw
Diameter		 35 45,50 55 65 75 90 100 105,110 120 130,150 150,160 165 165
Motor
Power		 5.5-4p 7.5-4p 11-4p 18.5-4p 25-4p 45-4p 45-4p 55-6p 75-6p 132-6p 132-6p 160-6p 213-6p
Input
Speed		 800 800 900 900 1000 1000 1120 960 960 960 960 960 1200
Output
Speed		 100 100 10 90 80 80 70 110 60 60 60 60 60
Remark Motor and gearbox connected by belt Motor and gearbox connected by coupling
Drawing 1 Dimension and Assembly Type of ZLYJ Gear Speed Reducer
Table 2 Dimension of ZLYJ Gear Speed Reducer
Size a H H1 h A B L1 l1 L2 L3
ZLYJ112 184 130 / 18 420 170 105 60 203 62
ZLYJ133 218 140 / 20 478 215 125 60 205 65
ZLYJ146 256 160 / 22 560 250 148 70 245 83
ZLYJ173 285 170 / 22 576 256 148 80 250 120
ZLYJ200 340 240 / 36 750 340 200 80 330 140
ZLYJ225 385 250 / 36 800 360 205 110 355 140
ZLYJ250 430 280 / 45 930 380 220 110 380 145
ZLYJ280 480 300 / 50 970 410 240 125 405 148
ZLYJ315 539 350 / 55 1160 450 275 140 440 175
ZLYJ330 575 350 / 60 1160 450 260 170 445 /
ZLYJ375 625 400 / 60 1280 466 265 170 445 220
ZLYJ420 695 460 / 60 1420 550 310 130 535 220
ZLYJ450 765 500 / 60 1550 600 330 130 600 220
ZLYJ630 1080 650 / 80 2100 850 475 165 750 280
ZLYJ450 765 500 276 60 1550 600 350 105 600 220
ZLYJ630 1070 630 350 80 2100 770 430 165 760 280
Size Φ2(H7) l3 Φ3 d4 n2 m1 m2 m3 m4
ZCYJ112 160 5 210 14 4 92.5 163 163 50
ZLYJ133 180 5 230 16 6 104 185 185 61
ZLYJ146 200 6 260 16 6 118 190 235 72
ZLYJ173 230 6 300 18 6 113.5 220 220 68
ZLYJ200 270 6 350 18 6 150 275 275 100
ZLYJ225 330 6 420 26 6 165 310 310 90
ZLYJ250 330 8 420 26 6 205 360 360 105
ZLYJ280 360 8 450 30 6 200 385 385 100
ZLYJ315 365 8 450 32 6 260 450 450 130
ZLYJ330 400 10 500 30 6 225 450 450 130
ZLYJ375 400 10 500 32 8 250 475 500 165
ZLYJ420 500 10 660 32 8 305 580<, o:p>, ; 540 150
ZLYJ450 500 10 700 32 8 300 600 600 190
ZLYJ630 640 25 860 48 8 400 850 800 250
ZLYJ450 520 10 700 32 8 300 600 600 190
ZLYJ630 650 26 805 48 8 400 850 800 250
Size d1(m6) t1 b1 d2(HB) l4 t2 b2(D10) d3 n1 Φ1
ZLYJ112 28 31 8 35 52 38.3 10 M10 6 185
ZLYJ133 28 31 8 38 80 41.3 10 M12 8 205
ZLYJ146 32 35 10 45 120 48.8 14 M12 ,
8		 230
ZLYJ173 38 41 10 50 140 57.6 14×2 M16 8 260
ZLYJ200 45 48.5 14 60 170 68.8 16×2 M16 12 300
ZLYJ225 55 59 16 70 175 78.8 18×2 M20 12 370
ZLYJ250 60 64 18 80 180 90.8 22×2 M20 12 370
ZLYJ280 65 69 18 90 180 100.8 25×2 M24 12 400
ZLYJ315 75 79.5 20 100 200 112.8 28×2 M24 12 405
ZLYJ330 85 90 22 110 220 122.8 28*2 M24 12 450
ZLYJ375 85 90 22 110 255 122.8 28×2 M24 12 450
ZLYJ420 95 100 25 120 270 134.8 32×2 M30 12 580
ZLYJ450 100 106 28 170 250 188 40×2 M30 12 610
ZLYJ630 120 127 32 180 340 200 45×2 M36 12 750
ZLYJ450 75 79.5 20 170 350 188 40×2 M36 12 610
ZLYJ630 110 116 28 180 340 200 45×2 M36 12 720
Size m5 m6 m7 C D E d5 d6 15 M
ZCYJ112 / 96 170 / / / M16 18 / 125
ZLYJ133 / 180 184 / / / M18 20 / 137
ZLYJ146 / 210 210 85 38 　 M18 20 / 167
ZLYJ173 / 225 214 / / ZG3/8″ M20 25 / 147
ZLYJ200 / 290 310 / / M85×4 40 　 250
ZLYJ225 / 315 330 140 50 55 50 215
ZLYJ250 / 330 340 160 50 235
ZLYJ280 / 355 380 160 50 250
ZLYJ315 / 390 460 160 55 ZG3/4″ M90×4 60 60 323
ZLYJ330 / 390 425 160 55 350
ZLYJ375 265 400<, , /P> 500 160 55 323
ZLYJ420 328 480 580 200 60 310
ZLYJ450 300 520 600 200 55 425
ZLYJ630 450 750 900 300 65 460
ZLYJ450 300 520 / 200 100 425
ZLYJ630 450 670 / 300 80 460
Table 3 Cooling Method of ZLYJ Gear Speed Reducer
Size Oil Pump Cooling Cube
(inside)		 Cooling
Device		 Remark
ZLYJ112 / / / Natural Cooling
ZLYJ133 / / / Natural Cooling
ZLYJ146 / / / Natural Cooling
ZLYJ173 / YES / Pls contact us if needing cooling device
ZLYJ200 YES YES / Pls contact us if needing cooling device
ZLYJ225 YES YES / Pls contact us if needing cooling device
ZLYJ250 YES YES / Pls contact us if needing cooling device
ZLYJ280 YES YES / Pls contact us if needing cooling device
ZLYJ315 YES YES YES 　
ZLYJ375 YES YES YES 　
ZLYJ420 YES YES YES 　
ZLYJ450 YES YES YES 　
Ⅴ. Usage and Maintenance
1. Gearbox should avoid dampness during the transport and stock. It needs painting some rustproof oil if without using in half a year.
2. Gearbox should be mounted on smooth bases, the screw in the output shaft should not be locked while re-rotating to avoid giving more loads on bearings. It is not allowed to disassemble shaft with force.
3. Oil should be added to the middle level of oil gauge and needs to be checked frequently to ensure oil level not lower than middle level. Please use middle load industrial gear oil L-CKC220 or L-CKC320. It needs to be changed after first running 300-600hrs, and then change it every 3000hrs. Gearbox should stop being used, and drain heat oil out. Gearbox should be washed clean by same quality oil.
4. Gearbox with force oil pump maybe have high noise when start because of the density of oil. This phenomenon will disappear when oil temperature increased. Gearbox with motor pump should be started for a while before loading.
5. If oil pump have abnormal noise when running, it maybe the problem of oil way. Please wash relative parts. And ensure that gearbox runs without loading after a long time stock or under low temperature conditions.
6. If oil temperature has a relative increase when running, e.g. It increases to be 70℃ or even to be 100℃, oil quality will become worse and form abnormal noise. Under that situation please stop using to check the reason. It can only be used after removing problems.
Ⅵ. Problems and Resolve Method
Problem Reason Method
abnormal noise damage of gears’ engaging parts check engaging parts, and change the broken ones
big interval of gears 　
damage of bearing adjust bearing interval; change damage bearing
big noiseof fixing part fixing parts loose fasten nut and thread; change damage parts
high temperature
of bearing		 low level of oil add oil at normal temperature
decreased oil quality 　
damaged bearing check bearing, change if needed
damaged oil pump check oil pump, change if needed
leakage bad sealing seal the part well
water in oil foam in oil check the water condition of oil by glass
check oil condition in chemical lab, wash and change if needed
increased
working temperature		 high oil level check oil level and adjust
aging of oil change oil if needed
pollution of oil
damaged of oil pump check function of oil pump, repair or change it
ZLYJ Gear Speed Reducer
ZLYJ catalogue