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Hollow Rotary Reducer

ST Series
Product Description
  • Nominal output torque: 3 Nm to 90 Nm
  • Backlash : 0.5arc-min
  • Direct attachment with simple and reliable design.
  • Large hollow rotary table for concise wiring and piping.
  • Accurate and fast positioning.
  • Repeat origin returns easily.
Features
  • Min Backlash of 30 arc-seconds.
  • Large hollow rotary flange –hollow bore for wiring or shafts.
  • Hollow bore driven by your servo motor via large helical ring gear inte-grated in a rotating flange provides smooth, accurate and fast positioning & indexing.
  • Flange rotates on precision high capacity “crossed roller” type bearing for positional accuracy, rigidity and heavy axial loads.
  • Larger reduction ratios achievable by inputting with planetary or right angle gearhead.
  • Mostly used for Indexing Table or Rotary Table Applications.
Hollow Rotary Gearbox

Hollow Rotary Reducer

  • Specification Chart
  • Download Catalogue
Performances Unit ST85 ST130 ST 200 ST230 ST280
Ratio : 30 10 10 10 10
Nominal Output Torque Kgf*m/Nm 0.51/4.99 5.1/50 6.63/65 8.67/85 9.18/90
Maximum Acceleration Torque Kgf*m/Nm 3 times nominal output torque
Emergency Stop Torque Kgf*m/Nm 3.4 times nominal output torque
Permissible Input Speed rpm 3,000 3,000 600 600 600
Standard Backlash arcmin 0.5 0.5 0.5 0.5 0.5
Max. tilting moment at flange face Kgf*m/Nm 1.02/10 8.4/84.32 14.28/140 65.97/646.45 95.5/939.9
Maximum radial load Kgf/N 50/490 200/1960 694/6801 835/8183 1000/9800
Maximum axial load Kgf/N 25/245 100/980 347/3402 417.5/4091.5 500/4900
Rated Operation Life hr > 10,000 At permissible input speed and nominal output torque.
Operating Temperature °C -10 °C to 40 °C (ambient) / 90 °C (case maximum temp.)
Lubrication - Lubricated for life (Synthetic grease)
Ingress Protection Class IP IP54
Gearhead Inertia Kg*cm² 0.02 0.2 3.6 2.3 4.8
Efficiency at Full Load % 80%
Weight Kg 0.95 3.6 13.2 16.8 22.5
No Load Running Torque Kgf*m/Nm 0.51/0.05 5.1/0.51 7.2/0.7 17/1.666 20/1.96
  • Efficiency at full load is 90%.
  • Output limit speed at 60 rpm
  • At permissible input speed and continuous output torque.
  • Larger reduction ratios possible by inputting with an in-line or right angle gearhead.