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WPM Stepper Motor & Gear


Geared motor Specification

Geared motor model EA
Configuration Hybrid stepper motor & 1:14 Gear ratio
Number of phases and motor type 2 phase/BI polar system
Rated Voltage 4.48V
Rated Current 0.56A/Phase
Step Angle 0.0643° (Half step)/0.0323° (1/4 micro step)
RPM 1 to 150rpm
Duty  Ratio Max.  50%
Winding Resistance 8.0Ω±10%
Inductance 7.1mH
Motor Insulation Class B
Motor  operating  temperature less than 80℃ (176°)
Life 5,000hr (Geared motor)  *Not a guaranteed value.
<1-2P Drive Method>
F-Low(Initial speed) 500Hz (pps)
F-Hight(Operetion speed) over 187Hz (pps) use     Max: 14000Hz (pps)
Acceleration/Deceleration Time

The given value from 0.1 to 0.5s or 1.0s

(When the Pump load is high, set the acceleratioin time longer.)

Operetion current

Any value below the Maximum rating.

EA motor: 0.56A

Rating rotation

EA motor  with 1: 14gear 【0~150rpm ⇒ 0~14000Hz (1-2P)】

*When the Vibration is noticeable at lower rpm operation, micro step operation is recommended.
Stepper Motor & Gear  WP1000/1100

The characteristic of our Peristaltic Pump products is an initial hight torque value. It's about 2 or 3 times higher

compared to the torque required to maintain a constant velocity once the tube has conformed to the shape of the roller.

When you have a step-motor driven by a high frequency, it is necessary to apply the frequency described in above.

In deceleration, the frequency can be reduced gradually as well as in acceleration or within being cut off suddenly.


One point advice

If Pump load is high and rotor does not work, please try to apply 10-20% higher current than rated current of motor during the acceleration of trapezoidal drive above. Once Pump reaches at the constant speed, please set it back to the rated current.


Pump tube type: Tube size (inner diameter)
  (Selectable according to the tube material)

Model name

1 1.6



Inner diameter 1mm 1.6mm (1/16”) 2mm 2.5mm 3mm
Outside diameter 3mm 3.2mm (1/8”) 4mm 4.5mm 5mm
Available tube material S / P / W P / F S / P / W P S / P / W



Dimensions (unit: mm)

Motor wiring terminal dimensions diagrams


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