Helical-worm Gearmotor S Series

Helical-worm Gearmotor S Series

Simple, practical and discrete.

K series (three-stage).

SEW-EURODRIVE helical-worm gear units are helical/helical-worm combinations, so they are more efficient than normal helical-worm gear units. Due to their outstanding efficiency, these drives can be used in every industrial sector and tailored to individual torque and speed requirements. The reduction ratios afforded by the helical-worm gear stage and the low noise levels during operation make these gearmotors ideal low-cost solutions for simple applications.


  • Economical operation
  • Low noise
  • High permitted overhung loads

Available versions

  • Foot-mounted or flange-mounted
  • B5 or B14 Flange-mounted
  • Solid or hollow shaft
  • Hollow shaft with keyed connection, shrink disc, splined hollow shaft or TorqLOC®

Technical data

Helical gear unit versions

Gear unit reduction ratio[i]6.80 to 288.00
Multi-stage gear unit reduction ratio[i]110 to 33818
Output torque[Nm] ([in-lb])43 to 4000 (380 to 35400)
Motor power range[kW] ([hp])0.12 to 22 (0.16 to 30)

Helical-bevel gear unit versions

SF..B5 flange-mountedSF37SF47SF57SF67SF77SF87SF97
SAF..B5 flange-mounted / Hollow shaft /SAF37SAF47SAF57SAF67SAF77SAF87SAF97
SHF..B5 Flange-mounted / Hollow shaft / Shrink disc/td>SHF37SHF47SHF57SHF67SHF77SHF87SHF97
SA..Hollow shaftSA37SA47SA57SA67SA77SA87SA97
SH..Hollow shaft / Shrink discSH37SH47SH57SH67SH77SH87SH97
ST..Hollow shaft / TorqLOC®ST37ST47ST57ST67ST77ST87ST97
SAZ..B14 Flange-mounted / Hollow shaftSAZ37SAZ47SAZ57SAZ67SAZ77SAZ87SAZ97
SHZ..B14 Flange-mounted / Hollow shaft /Shrink discSHZ37SHZ47SHZ57SHZ67SHZ77SHZ87SHZ97
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