Products

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
Specification STE060 STE085 STE130 STE200
Equipped Motor Type 42 Stepper Motor 57 Stepper Motor 86 Stepper Motor
50W~100W Servo Motor 200W~400W Servo Motor 750W Servo Motor
Bearing Type Crossed Roller Ring
Ratio 5 18 5 10 10 18 10 18
Rotational Inertia 3507 x 10^-7 4324 x 10^-7 12539 x 10^-7 12539 x 10^-7 81556 x 10^-7 81556 x 10^-7 361220 x 10^-7 361220 x 10^-7
Allowable Output Torque 5.2 Nm 1.2 Nm 12 Nm 10 Nm 32 Nm 20 Nm 70 Nm 70 Nm
Rated Output Speed 200r/min
Angle Transmission precision 3 arcmin
Reset Positioning precision +/- 15 arcsec
BAcklash No backlash(Adjustable structure)
Allowable Axial Load 250N 500N 2000N 4000N
Allowable Moment of Inertia 5 Nm 10 Nm 50 Nm 100 Nm
Parallelism of rotating platform <0.015 <0.02 <0.04
Concentricity of rotating platform <0.015
Noise 65dB 67dB
Protection Level IP40
Weight 0.06 Kg 1.2 Kg 2.8 Kg 9.6 Kg
  • 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.