MY-1SD Series Electric Part-turn or Multi-turn Worm Valve Gearbox

Electric YOYAGE MY-1SD electric worm valve gearbox for butterfly, ball and plug valves
Product Overview

MY-1SD Worm Gear Operator

The MY-1SD series is the electric-actuator-driven version of the MY-1S — a part-turn or multi-turn worm gearbox with the handwheel replaced by an actuator flange, driving butterfly, ball, plug and rotary ball valves up to 150,000 Nm, plus three-way ball valves and other three-way valves that need full-rotation multi-turn operation. Its wide ratio range of 50:1 to 1248:1 suits different actuator torque and speed characteristics. The precision-cast housing, self-locking worm gear pair and tapered roller bearings deliver flexible, efficient transmission and reliable position holding. The output flange follows ISO 5211 for quick valve mounting, 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
Part-turn or Multi-turn
Gear Type
Worm Gear
Ratio
50:1–1248:1
Torque
300–150,000 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
  • Part-turn or multi-turn valve gearbox
  • 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 · H1 · H2 · K · K1 · K2 · L · L1
YOYAGE MY-1SD electric worm valve gearbox dimension drawing with ISO 5211 mounting flange 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
MY-00-1SD60:130025F10 / F07——F10Φ15×5×40Z10
60:140030F10 / F07——F10Φ15×5×40Z10
MY-0-1SD50:170060F12 / F103810×8F10Φ20×6×40Z10
60:170048F12 / F103810×8F10Φ20×6×40Z10
70:170041F12 / F103810×8F10Φ20×6×40Z10
50:11,00080F12 / F103810×8F10Φ20×6×40Z10
60:11,00068F12 / F103810×8F10Φ20×6×40Z10
70:11,00060F12 / F103810×8F10Φ20×6×40Z10
MY-1-1SD60:11,500108F14 / F124514×9F10Φ20×6×40Z10
70:11,500100F14 / F124514×9F10Φ20×6×40Z10
82:11,50080F14 / F124514×9F10Φ20×6×40Z10
MY-2-1SD122:12,500100F16 / F145516×10F10Φ20×6×40Z20
235:12,50048F16 / F145516×10F10Φ20×6×40Z20
320:12,50041F16 / F145516×10F10Φ20×6×40Z10
122:13,500120F16 / F145516×10F10Φ20×6×40Z15
235:13,50068F16 / F145516×10F10Φ20×6×40Z10
320:13,50060F16 / F145516×10F10Φ20×6×40Z10
440:13,50041F16 / F145516×10F10Φ20×6×40Z10
MY-3-1SD132:14,500142F20 / F166520×12F14Φ30×8×50Z15
170:14,500120F20 / F166520×12F10Φ20×6×40Z15
256:14,50080F20 / F166520×12F10Φ20×6×40Z20
346:14,50068F20 / F166520×12F10Φ20×6×40Z20
475:14,50048F20 / F166520×12F10Φ20×6×40Z10
MY-4-1SD150:16,500203F25 / F16/F208022×14F14Φ30×8×50Z20
198:16,500142F25 / F16/F208022×14F14Φ30×8×50Z30
230:16,500120F25 / F16/F208022×14F10Φ20×6×40Z30
265:16,500108F25 / F16/F208022×14F10Φ20×6×40Z60
150:18,500244F25 / F16/F208022×14F14Φ30×8×50Z30
198:18,500203F25 / F16/F208022×14F14Φ30×8×50Z30
230:18,500176F25 / F16/F208022×14F14Φ30×8×50Z30
265:18,500142F25 / F16/F208022×14F14Φ30×8×50Z20
150:110,000298F25 / F16/F208022×14F14Φ30×8×50Z30
198:110,000244F25 / F16/F208022×14F14Φ30×8×50Z30
230:110,000203F25 / F16/F208022×14F14Φ30×8×50Z20
265:110,000176F25 / F16/F208022×14F14Φ30×8×50Z20
MY-5-1SD160:113,000400F30 / F2510528×16F16Φ40×12×60Z60
215:113,000298F30 / F2510528×16F14Φ30×8×50Z60
314:113,000176F30 / F2510528×16F14Φ30×8×50Z45
372:113,000150F30 / F2510528×16F14Φ30×8×50Z30
160:116,000450F30 / F2510528×16F16Φ40×12×60Z45
215:116,000366F30 / F2510528×16F16Φ40×12×60Z45
314:116,000244F30 / F2510528×16F14Φ30×8×50Z30
372:116,000203F30 / F2510528×16F14Φ30×8×50Z30
MY-6-1SD153:122,000600F35 / F25/F3011532×18F16Φ40×12×60Z60
215:122,000450F35 / F25/F3011532×18F16Φ40×12×60Z45
392:122,000244F35 / F25/F3011532×18F14Φ30×8×50Z30
490:122,000203F35 / F25/F3011532×18F14Φ30×8×50Z30
568:122,000176F35 / F25/F3011532×18F14Φ30×8×50Z20
705:122,000142F35 / F25/F3011532×18F14Φ30×8×50Z15
952:122,000120F35 / F25/F3011532×18F10Φ20×6×45Z15
153:126,000750F35 / F25/F3011532×18F16Φ40×12×60Z90
215:126,000542F35 / F25/F3011532×18F16Φ40×12×60Z60
392:126,000298F35 / F25/F3011532×18F14Φ30×8×50Z30
490:126,000244F35 / F25/F3011532×18F14Φ30×8×50Z30
568:126,000203F35 / F25/F3011532×18F14Φ30×8×50Z20
705:126,000176F35 / F25/F3011532×18F14Φ30×8×50Z20
952:126,000142F35 / F25/F3011532×18F14Φ30×8×50Z15
MY-7-1SD255:135,000600F40 / F30/F3514036×20F16Φ40×12×60Z60
340:135,000450F40 / F30/F3514036×20F14Φ30×8×50Z45
395:135,000400F40 / F30/F3514036×20F14Φ30×8×50Z45
560:135,000298F40 / F30/F3514036×20F14Φ30×8×50Z30
700:135,000250F40 / F30/F3514036×20F14Φ30×8×50Z30
860:135,000203F40 / F30/F3514036×20F14Φ30×8×50Z20
1040:135,000176F40 / F30/F3514036×20F14Φ30×8×50Z20
255:140,000680F40 / F30/F3514036×20F16Φ40×12×60Z60
340:140,000500F40 / F30/F3514036×20F16Φ40×12×60Z60
395:140,000450F40 / F30/F3514036×20F14Φ30×8×50Z45
560:140,000366F40 / F30/F3514036×20F14Φ30×8×50Z45
700:140,000250F40 / F30/F3514036×20F14Φ30×8×50Z30
860:140,000244F40 / F30/F3514036×20F14Φ30×8×50Z30
1040:140,000203F40 / F30/F3514036×20F14Φ30×8×50Z20
MY-8-1SD320:150,000680F48 / F35/F4015540×22F16Φ40×12×60Z90
360:150,000600F48 / F35/F4015540×22F16Φ40×12×60Z60
435:150,000500F48 / F35/F4015540×22F14Φ30×8×50Z60
505:150,000450F48 / F35/F4015540×22F14Φ30×8×50Z45
620:150,000366F48 / F35/F4015540×22F14Φ30×8×50Z45
760:150,000300F48 / F35/F4015540×22F14Φ30×8×50Z30
910:150,000250F48 / F35/F4015540×22F14Φ30×8×50Z30
1248:150,000203F48 / F35/F4015540×22F14Φ30×8×50Z20
320:160,000800F48 / F35/F4015540×22F16Φ40×12×60Z90
360:160,000750F48 / F35/F4015540×22F16Φ40×12×60Z90
435:160,000600F48 / F35/F4015540×22F16Φ40×12×60Z60
505:160,000500F48 / F35/F4015540×22F14Φ30×8×50Z60
620:160,000450F48 / F35/F4015540×22F14Φ30×8×50Z45
760:160,000366F48 / F35/F4015540×22F14Φ30×8×50Z45
910:160,000300F48 / F35/F4015540×22F14Φ30×8×50Z30
1248:160,000244F48 / F35/F4015540×22F14Φ30×8×50Z30
MY-9-1SD385:180,000900F60 / F4820045×25F16Φ40×12×60Z90
435:180,000800F60 / F4820045×25F16Φ40×12×60Z90
485:180,000750F60 / F4820045×25F16Φ40×12×60Z60
580:180,000600F60 / F4820045×25F16Φ40×12×60Z60
730:180,000500F60 / F4820045×25F14Φ30×8×50Z60
846:180,000450F60 / F4820045×25F14Φ30×8×50Z45
950:180,000400F60 / F4820045×25F14Φ30×8×50Z45
1120:180,000366F60 / F4820045×25F14Φ30×8×50Z45
385:1100,0001,200F60 / F4820045×25F25Φ50×14×80Z120
435:1100,0001,020F60 / F4820045×25F25Φ50×14×80Z120
485:1100,000900F60 / F4820045×25F16Φ40×12×60Z90
580:1100,000750F60 / F4820045×25F16Φ40×12×60Z90
730:1100,000625F60 / F4820045×25F16Φ40×12×60Z60
846:1100,000600F60 / F4820045×25F16Φ40×12×60Z60
950:1100,000542F60 / F4820045×25F16Φ40×12×60Z60
1120:1100,000450F60 / F4820045×25F14Φ30×8×50Z45
MY-10-1SD435:1120,0001,200F60 / F4822050×28F25Φ50×14×80Z120
535:1120,0001,020F60 / F4822050×28F25Φ50×14×80Z120
610:1120,000900F60 / F4822050×28F16Φ40×12×60Z60
645:1120,000845F60 / F4822050×28F16Φ40×12×60Z60
715:1120,000800F60 / F4822050×28F16Φ40×12×60Z60
760:1120,000750F60 / F4822050×28F16Φ40×12×60Z60
1000:1120,000600F60 / F4822050×28F16Φ40×12×60Z60
1100:1120,000542F60 / F4822050×28F16Φ40×12×60Z60
1248:1120,000500F60 / F4822050×28F14Φ30×8×50Z45
435:1150,0001,490F60 / F4822050×28F25Φ50×14×80Z120
535:1150,0001,290F60 / F4822050×28F25Φ50×14×80Z120
610:1150,0001,200F60 / F4822050×28F25Φ50×14×80Z120
645:1150,0001,100F60 / F4822050×28F25Φ50×14×80Z120
715:1150,0001,020F60 / F4822050×28F25Φ50×14×80Z120

Connection Size & Appearance Size (mm)

Model FlangeISO 5211 Flange Dia.D Bolt Circle Dia.PCD D0 Bolt SpecN-H-DP ConvexD1×h H1 H2 K K1 K2 L L1
MY-0-1S-DF121501254-M12-1885×36619589474783211
MY-1-1S-DF141751404-M16-24100×47521489455892220
MY-2-1S-DF162101654-M20-30130×592274.51086362113248
MY-3-1S-DF202502058-M16-24140×5111325.51105760125261
MY-4-1S-DF253002548-M16-24200×514537414080100155310
MY-4-1SZ-DF253002548-M16-24200×514537414080100155345
MY-5-1S-DF303502988-M20-27230×5160417.514070102197345
MY-5-1SZ-DF303502988-M20-27230×5160417.514070102197375
MY-6-1S-DF354153568-M30-45260×5200542.517990112230388
MY-6-1SZ-DF354153568-M30-45260×5200542.517990112230409
MY-7-1S-DF404754068-M36-54300×8225617.5188100140264463
MY-8-1S-DF4856048312-M36-54370×8270705203100155300503
MY-9-1S-DF6068660320-M36-54470×8315854230120176368549
MY-10-1S-DF6068660320-M36-54470×8334881240125200395570

Note: MY-00-1SD connection size follows the F10 flange standard.

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