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Hollow Rotary Reducer

STE 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
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Specification STE060 STE085 STE130 STE200 STE280 STE350 STE450
Equipped Motor Type 42 Stepper Motor 57 Stepper Motor 57 Stepper Motor 86 Stepper Motor 110/130 Stepper Motor 130 Stepper Motor 130 Stepper Motor
50W~100W Servo Motor 200W~400W Servo Motor 200W~400W Servo Motor 750W Servo Motor 750W Servo Motor 1000W~4400W Servo Motor 1000W~5500W Servo Motor
Bearing Type Crossed Roller Ring
Ratio 5 10 18 5 10 10 18 10 18 10 10 18 10
Moment of Inertia(kgm2) 3507 x 10^-7 12593 x 10^-7 8155 x 10^-6 36122 x 10^-6 14600 x 10^-5 25500 x 10^-5 80500 x 10^-5
Allowable Output Torque(Nm) 5.2 4.6 1.2 12 10 32 20 70 70 180 320 260 400
Rated Output Speed(RPM) 300 300 200 200 200 150 150
Angle Transmission precision(arcmin) <2 <2 <1.5 <1 <1 <1 <1
Reset Positioning precision(arcsec) +/- 15 arcsec +/- 15 arcsec +/- 15 arcsec +/- 10 arcsec +/- 10 arcsec +/- 10 arcsec +/- 10 arcsec
BAcklash <1
Allowable Axial Load(N) 250 500 2000 4000 7000 9000 11000
Parallelism of rotating(mm) 0.015 0.015 0.02 0.02 0.03 0.03 0.04
Concentricity of rotating platform(mm) 0.01 0.01 0.012 0.013 0.015 0.015 0.02
Noise(dB) 65 65 65 67 71 73 75
Service Life(hrs) 20000
Protection Level IP40
Weight 0.6 1.2 2.8 9.6 18 25.5 49
  • Efficiency at full load is 90%.
  • Output limit speed at 60 rpm
  • 2000 hrs life at permissible input speed and continuous output torque.
  • Higher Reduction Achieveable with combination with SMD's Planetary or Right Angle Gearbox