YZ-SD Series Electric Quarter-turn Worm Valve Gearbox

Electric YOYAGE YZ-SD electric worm valve gearbox for butterfly, ball and plug valves
Product Overview

YZ-SD Worm Gear Operator

The YZ-SD series is the electric-actuator-driven version of the YZ-S: the handwheel input of the manual quarter-turn worm gearbox is replaced by an actuator flange, so the YZ worm gear stage and the added YZ-ZC spur gear stage are driven by an electric actuator instead of by hand. It serves large butterfly, ball, plug and rotary ball valves through 22 sizes from 500 to 850,000 Nm, with ratios from 51:1 to 8860:1 and ISO 5211 valve flanges from F10 to F100. The precisely cast housing offers multiple material options, while the self-locking worm gear pair and tapered roller bearings keep transmission smooth and efficient. Valve-side mounting follows ISO 5211; the actuator input ISO 5210 or JB2920-81; IP67 as standard, IP68 optional for special environments. Manufactured in compliance with CE and ISO 9001 standards.

Standard Type
Quarter-turn
Gear Type
Worm Gear
Ratio
51:1–8860:1
Torque
500–850,000 Nm
Protection
IP67 (IP68 optional)
Housing Material
Ductile Iron, WCB (common)
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Product Features

  • Self-locking worm gear set prevents valve back-driving
  • Heat-treated worm with high hardness and wear resistance
  • Precision-ground gears for smooth rotation and high efficiency
  • High-strength input shaft with protective plating
  • C3/C5 coating system for surface protection
  • Reliable bearing support for stable operation
  • Grease-filled lubrication for extended service life
  • NBR seals for enhanced sealing performance
  • Rigorous torque and low-temperature testing
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Custom Solutions

  • Housing materials: Ductile iron, WCB, CF8/CF8M, LCC, LCB, LC1
  • Full-bronze or bronze-rimmed worm wheel
  • Gear ratio customization on request
  • Actuator input flange: ISO 5210 or JB2920-81, or custom on request
  • Worm gear hubs customization (Valve stem)
  • MSS flange standard or custom connections
  • Low-temperature service down to -59°C
  • C5 coating system
  • IP68 protection option
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Technical Parameters & Dimensions

Read our selection guide: How to Choose a Valve Gearbox for Industrial Valve Applications

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Dimension Drawing D · D0 · N-H-DP · D1×h · Φd · Keyway · A · B · C · L · L1 · H · H1
YOYAGE YZ-SD quarter-turn electric worm valve gearbox dimension drawing with ISO 5211 mounting flange and actuator connection details

Worm Gearbox & Electric Actuator Combination

Model Ratio Output TorqueN·m Input TorqueN·m Valve FlangeISO 5211 Max Stem Dia.Φd Keyway Actuator FlangeISO 5210 Input Shaft Actuator ConnectionJB2920-81
YZ-0-SD51:150041F10 / F07——F10Φ20×6×40Z10
60:150035F10 / F07——F10Φ20×6×40Z10
YZ-1-SD66:11,20080F12 / F104212×8F10Φ20×6×40Z10
80:11,20068F12 / F104212×8F10Φ20×6×40Z10
92:11,20060F12 / F104212×8F10Φ20×6×40Z10
YZ-2-SD66:11,600108F14 / F125014×9F10Φ20×6×40Z10
80:11,600100F14 / F125014×9F10Φ20×6×40Z10
92:11,60080F14 / F125014×9F10Φ20×6×40Z10
YZ-2J-SD70:13,000150F16 / F146018×11F14Φ30×8×50Z20
110:13,000100F16 / F146018×11F10Φ20×6×40Z10
140:13,00080F16 / F146018×11F10Φ20×6×40Z10
180:13,00060F16 / F146018×11F10Φ20×6×40Z10
260:13,00041F16 / F146018×11F10Φ20×6×40Z10
340:13,00034F16 / F146018×11F10Φ20×6×40Z10
YZ-3-SD110:14,500146F16 / F146018×11F14Φ30×8×50Z20
130:14,500125F16 / F146018×11F14Φ30×8×50Z30
200:14,50080F16 / F146018×11F10Φ20×6×40Z10
280:14,50060F16 / F146018×11F10Φ20×6×40Z10
340:14,50050F16 / F146018×11F10Φ20×6×40Z10
YZ-3J-SD130:17,500200F20 / F16/F257522×14F14Φ30×8×50Z30
190:17,500142F20 / F16/F257522×14F14Φ30×8×50Z20
220:17,500120F20 / F16/F257522×14F10Φ20×6×40Z20
250:17,500108F20 / F16/F257522×14F10Φ20×6×40Z20
340:17,50080F20 / F16/F257522×14F10Φ20×6×40Z10
450:17,50060F20 / F16/F257522×14F10Φ20×6×40Z10
YZ-4-SD165:112,000300F25 / F16/F309025×14F16Φ30×8×50Z45
180:112,000250F25 / F16/F309025×14F14Φ30×8×50Z30
210:112,000203F25 / F16/F309025×14F14Φ30×8×50Z30
360:112,000120F25 / F16/F309025×14F16Φ30×8×50Z60
495:112,000100F25 / F16/F309025×14F14Φ30×8×50Z30
YZ-4J-SD150:116,500400F30 / F25/F3511028×16F16Φ40×12×60Z45
195:116,500300F30 / F25/F3511028×16F14Φ30×8×50Z30
235:116,500250F30 / F25/F3511028×16F14Φ30×8×50Z30
260:116,500230F30 / F25/F3511028×16F14Φ30×8×50Z30
290:116,500203F30 / F25/F3511028×16F14Φ30×8×50Z30
490:116,500120F30 / F25/F3511028×16F10Φ20×6×40Z20
YZ-5-SD220:123,000400F30 / F25/F3511028×16F16Φ40×12×60Z45
270:123,000300F30 / F25/F3511028×16F14Φ30×8×50Z30
330:123,000250F30 / F25/F3511028×16F14Φ30×8×50Z30
360:123,000230F30 / F25/F3511028×16F14Φ30×8×50Z30
405:123,000203F30 / F25/F3511028×16F14Φ30×8×50Z20
740:123,000120F30 / F25/F3511028×16F14Φ30×8×50Z20
YZ-5J-SD250:128,000400F35 / F30/F4012032×18F16Φ40×12×60Z45
270:128,000366F35 / F30/F4012032×18F14Φ30×8×50Z30
335:128,000300F35 / F30/F4012032×18F14Φ30×8×50Z30
400:128,000250F35 / F30/F4012032×18F14Φ30×8×50Z30
490:128,000203F35 / F30/F4012032×18F14Φ30×8×50Z20
895:128,000120F35 / F30/F4012032×18F10Φ20×6×40Z20
YZ-6-SD220:132,000542F35 / F30/F4012032×18F16Φ40×12×60Z60
230:132,000500F35 / F30/F4012032×18F16Φ40×12×60Z60
250:132,000450F35 / F30/F4012032×18F16Φ40×12×60Z45
380:132,000300F35 / F30/F4012032×18F14Φ30×8×50Z30
460:132,000250F35 / F30/F4012032×18F14Φ30×8×50Z30
560:132,000203F35 / F30/F4012032×18F14Φ30×8×50Z20
700:132,000176F35 / F30/F4012032×18F14Φ30×8×50Z20
YZ-6J-SD250:148,000680F40 / F30/F3514540×22F16Φ40×12×60Z60
340:148,000500F40 / F30/F3514540×22F16Φ40×12×60Z60
380:148,000450F40 / F30/F3514540×22F14Φ30×8×50Z45
470:148,000366F40 / F30/F3514540×22F14Φ30×8×50Z45
570:148,000300F40 / F30/F3514540×22F14Φ30×8×50Z30
740:148,000250F40 / F30/F3514540×22F14Φ30×8×50Z30
910:148,000203F40 / F30/F3514540×22F14Φ30×8×50Z30
YZ-7-SD270:163,000900F40 / F30/F3516040×22F16Φ40×12×60Z90
400:163,000600F40 / F30/F3516040×22F16Φ40×12×60Z60
480:163,000500F40 / F30/F3516040×22F14Φ30×8×50Z60
540:163,000450F40 / F30/F3516040×22F14Φ30×8×50Z45
810:163,000300F40 / F30/F3516040×22F14Φ30×8×50Z30
980:163,000250F40 / F30/F3516040×22F14Φ30×8×50Z30
YZ-7X-SD340:180,000900F48 / F35/F4017045×25F16Φ40×12×60Z90
410:180,000745F48 / F35/F4017045×25F16Φ40×12×60Z90
510:180,000600F48 / F35/F4017045×25F16Φ40×12×60Z60
610:180,000500F48 / F35/F4017045×25F14Φ30×8×50Z60
680:180,000450F48 / F35/F4017045×25F14Φ30×8×50Z45
1020:180,000300F48 / F35/F4017045×25F14Φ30×8×50Z30
YZ-7J-SD320:1100,0001,200F48 / F35/F4018045×25F25Φ50×14×80Z120
370:1100,0001,020F48 / F35/F4018045×25F25Φ50×14×80Z120
430:1100,000900F48 / F35/F4018045×25F16Φ40×12×60Z90
640:1100,000600F48 / F35/F4018045×25F16Φ40×12×60Z90
770:1100,000500F48 / F35/F4018045×25F14Φ30×8×50Z60
860:1100,000450F48 / F35/F4018045×25F14Φ30×8×50Z45
YZ-8-SD300:1140,0001,800F48 / F40/F6018045×25F30Φ60×18×90Z180
395:1140,0001,355F48 / F40/F6018045×25F25Φ50×14×80Z180
450:1140,0001,200F48 / F40/F6018045×25F25Φ50×14×80Z120
640:1140,000845F48 / F40/F6018045×25F16Φ40×12×60Z90
790:1140,000680F48 / F40/F6018045×25F16Φ40×12×60Z90
890:1140,000600F48 / F40/F6018045×25F16Φ40×12×60Z60
990:1140,000542F48 / F40/F6018045×25F16Φ40×12×60Z60
YZ-8J-SD540:1190,0001,355F60 / F40/F4821050×28F25Φ50×14×80Z120
610:1190,0001,200F60 / F40/F4821050×28F25Φ50×14×80Z120
715:1190,0001,020F60 / F40/F4821050×28F25Φ50×14×80Z120
815:1190,000900F60 / F40/F4821050×28F16Φ40×12×60Z90
980:1190,000745F60 / F40/F4821050×28F16Φ40×12×60Z90
1075:1190,000680F60 / F40/F4821050×28F16Φ40×12×60Z90
1260:1190,000600F60 / F40/F4821050×28F16Φ40×12×60Z60
1520:1190,000500F60 / F40/F4821050×28F14Φ30×8×50Z60
1680:1190,000450F60 / F40/F4821050×28F14Φ30×8×50Z45
1900:1190,000400F60 / F40/F4821050×28F14Φ30×8×50Z45
YZ-9-SD385:1250,0002,500F60 / F40/F4822050×28F30Φ60×18×90Z250
535:1250,0001,800F60 / F40/F4822050×28F30Φ60×18×90Z180
565:1250,0001,700F60 / F40/F4822050×28F30Φ60×18×90Z180
710:1250,0001,355F60 / F40/F4822050×28F25Φ50×14×80Z180
800:1250,0001,200F60 / F40/F4822050×28F25Φ50×14×80Z120
940:1250,0001,020F60 / F40/F4822050×28F25Φ50×14×80Z120
1110:1250,000900F60 / F40/F4822050×28F16Φ40×12×60Z90
1250:1250,000800F60 / F40/F4822050×28F25Φ50×14×80Z90
2000:1250,000500F60 / F40/F4822050×28F14Φ30×8×50Z60
2500:1250,000400F60 / F40/F4822050×28F14Φ30×8×50Z45
YZ-9J-SD540:1350,0002,500F60 / F8027063×32F30Φ60×18×90Z250
750:1350,0001,800F60 / F8027063×32F30Φ60×18×90Z180
790:1350,0001,700F60 / F8027063×32F30Φ60×18×90Z180
995:1350,0001,355F60 / F8027063×32F25Φ50×14×80Z180
1120:1350,0001,200F60 / F8027063×32F25Φ50×14×80Z120
1320:1350,0001,020F60 / F8027063×32F25Φ50×14×80Z120
1495:1350,000900F60 / F8027063×32F16Φ40×12×60Z90
1680:1350,000800F60 / F8027063×32F25Φ50×14×80Z90
2800:1350,000500F60 / F8027063×32F14Φ30×8×50Z60
3500:1350,000400F60 / F8027063×32F14Φ30×8×50Z45
YZ-10-SD515:1450,0003,500F80 / F48/F6030070×36F30Φ60×18×90Z350
575:1450,0003,000F80 / F48/F6030070×36F30Φ60×18×90Z350
690:1450,0002,500F80 / F48/F6030070×36F30Φ60×18×90Z250
850:1450,0002,030F80 / F48/F6030070×36F30Φ60×18×90Z250
960:1450,0001,800F80 / F48/F6030070×36F30Φ60×18×90Z180
1020:1450,0001,700F80 / F48/F6030070×36F30Φ60×18×90Z180
1280:1450,0001,355F80 / F48/F6030070×36F25Φ50×14×80Z180
1500:1450,0001,200F80 / F48/F6030070×36F25Φ50×14×80Z120
1765:1450,0001,020F80 / F48/F6030070×36F25Φ50×14×80Z120
2160:1450,000800F80 / F48/F6030070×36F25Φ50×14×80Z90
3600:1450,000500F80 / F48/F6030070×36F14Φ30×8×50Z60
4500:1450,000400F80 / F48/F6030070×36F14Φ30×8×50Z45
YZ-11-SD775:1650,0003,500F100 / F8038080×40F30Φ60×18×90Z350
900:1650,0003,000F100 / F8038080×40F30Φ60×18×90Z350
1010:1650,0002,500F100 / F8038080×40F30Φ60×18×90Z250
1335:1650,0002,030F100 / F8038080×40F30Φ60×18×90Z250
1504:1650,0001,800F100 / F8038080×40F30Φ60×18×90Z180
1595:1650,0001,700F100 / F8038080×40F30Φ60×18×90Z180
1998:1650,0001,355F100 / F8038080×40F25Φ50×14×80Z180
2260:1650,0001,200F100 / F8038080×40F25Φ50×14×80Z120
2655:1650,0001,020F100 / F8038080×40F25Φ50×14×80Z120
3385:1650,000800F100 / F8038080×40F25Φ50×14×80Z90
5420:1650,000500F100 / F8038080×40F14Φ30×8×50Z60
6790:1650,000400F100 / F8038080×40F14Φ30×8×50Z45
YZ-12-SD1010:1850,0003,500F100 / F8042090×45F30Φ60×18×90Z350
1180:1850,0003,000F100 / F8042090×45F30Φ60×18×90Z350
1420:1850,0002,500F100 / F8042090×45F30Φ60×18×90Z250
1750:1850,0002,030F100 / F8042090×45F30Φ60×18×90Z250
1970:1850,0001,800F100 / F8042090×45F30Φ60×18×90Z180
2085:1850,0001,700F100 / F8042090×45F30Φ60×18×90Z180
2620:1850,0001,355F100 / F8042090×45F25Φ50×14×80Z180
2955:1850,0001,200F100 / F8042090×45F25Φ50×14×80Z120
3480:1850,0001,020F100 / F8042090×45F25Φ50×14×80Z120
4435:1850,000800F100 / F8042090×45F25Φ50×14×80Z90
7090:1850,000500F100 / F8042090×45F14Φ30×8×50Z60
8860:1850,000400F100 / F8042090×45F14Φ30×8×50Z45

Connection Size & Appearance Size (mm)

Model FlangeISO 5211 Flange Dia.D Bolt Circle Dia.PCD D0 Bolt SpecN-H-DP ConvexD1×h A B C L L1 H H1
YZ-1-SDF121501254-M12×1885×31502041108517510568
YZ-2-SDF141751404-M16×20100×41752261209518511478
YZ-2J-SDF162101654-M20×30130×521024514011527513293
YZ-3-SDF162101654-M20×30130×5225300125122280154106
YZ-3J-SDF202502058-M16×24140×5300331186148350155105
YZ-4-SDF253002548-M16×24200×5340430222167346185127
YZ-4J-SDF303502988-M20×30230×5350418243185407185122
YZ-5-SDF303502988-M20×30230×5390468232187410190120
YZ-5J-SDF354153568-M30×45260×5430488275225480195132
YZ-6-SDF354153568-M30×40260×5470595298232482200127
YZ-6J-SDF404754068-M36×54300×8560637357280530243145
YZ-7-SDF404754068-M36×54300×8590765375295570244153
YZ-7X-SDF4856048312-M36×54370×8620705395315595270167
YZ-7J-SDF4856048312-M36×54370×8660735405340660292193
YZ-8-SDF4856048312-M36×54370×8730895452365645305208
YZ-8J-SDF6068660320-M36×54470×8770910525395675380215
YZ-9-SDF6068660320-M36×54470×8800995535420710400250
YZ-9J-SDF6068660320-M36×54470×810301290680530776428261
YZ-10-SDF8090081320-M42×54670×1011501405710475852415263
YZ-11-SDF1001200104232-M42×54870×10155017309557701275555355
YZ-12-SDF1001200104232-M42×54870×101830208511708201190655410

Note: YZ-0-SD connection size follows the F10 flange standard.

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