4th-Axis Rotary table

eSDRT 250-175

Compact/Customize/Cost-effective

Customize plate for mechanical fitting if needed.

4th-Axis Rotary table eSDRT 250-175
  • Direct connection to the load, Gearless, Backlashless, Low Noise.
  • High over-load capacity(4x), High speed, High servoresponse.
  • Absolute encoders, High resolution(over 22-bits), High Precision.
  • Hollow-Shaft structure, easy wiring and piping.
  • High rigidity, integrated radial and axial bearings, suitable for heavy-duty cutting applications.
  • Heavy-duty Machines.
  • Customer-Supply-Encoder available.
  • Customize plate for mechanical fitting if needed.
  • Structure part modulized, local tooling.
Item
Mechanical Specification
Driving system
Center height
End plate diamater
Center hole diamater / Through hole diamater
End plate T-slot width
Key way width
Total weight (including Torque Motor)
Table Inertia
Allowable load inertia
Capacity of workpiece mass
Clamping Torque
Allowable load when clamped (FxL)
Max. radial / axial runout of endplate
Cooling method / IP protection level
Electrical Specification
Driver input voltage
Poles
Rated / Max. Torque
Rated / Max. Speed
Rated / Max. Current
Back E.M.F.
Torque constant
Absolute accuracy a)
Repeatability
Backlash
  • Item unit Value Remarks
    Mechanical Specification
    Driving system -- -- Direct-Drive  
    Center height CH mm 175  
    End plate diamater PD mm Φ250  
    Center hole diamater / Through hole diamater -- mm Φ55H7 / Φ46 through hole  
    End plate T-slot width TW mm 12H7  
    Key way width KW mm 18H7  
    Total weight (including Torque Motor) W kg 150  
    Table Inertia J kg.m2 0.3  
    Allowable load inertia Ja kg.m2 0.9  
    Capacity of workpiece mass Vertical kg 100
    (Φ250x250L, S45C)
    Cannot be used horizontally
    Use tailstoc kg 200 Cannot be used horizontally
    Clamping Torque Tc Nm 600 with 6kgf/cm2 air supply
    Allowable load when clamped (FxL) Ta Nm 720  
    Max. radial / axial runout of endplate Rr / Ra um 5 / 5  
    Cooling method / IP protection level -- -- self-cooling / IP67  
    Electrical Specification
    Driver input voltage VD Vrms 220  
    Poles p -- 44  
    Rated / Max. Torque Tr / Tm Nm 240 / 480  
    Rated / Max. Speed Vr / Vm rpm 100 / 150  
    Rated / Max. Current Ir / Im Arms 22 / 48  
    Back E.M.F. Ke Vrms 94Vrms@100rpm terminal to terminal
    Torque constant KT Nm / Arms 14  
    Absolute accuracy a) P arc- sec ±10 By RENISHAW XL80+XR20-W measurement
    Repeatability Ps arc- sec 4 By RENISHAW XL80+XR20-W measurement
    Backlash U arc- sec 4 By RENISHAW XL80+XR20-W measurement
    • CNC Tapping Center Applications
    • CNC Gear Tool Grinding Machines