Tiny Motor Test System

Tiny Motor Test System

Stepper Motor & Mini Motor Torque Test System_1-1

With the unique application of Prony (winding) braking, which is the most proven

method for torque testing of small / tiny motors. It automatically obtains the T-N characteristic of tiny motor with high accuracy.

For small & Tiny torque testing, this is the most mature and highest precision of measurement method.


Advantages:

  • Minimal moment of inertia of the tester
    • By adopting Prony braking, the system provides stable measurement unaffected by moment of inertia of the tester and coupling loss, which is unavoidable in conventional torque testers. For micro motors, zero inertia testing is possible by winding the brake thread directly on the shaft.

Tiny Motor Curve (x-axis: RPM y-axis: Torque (g.cm))

Torque / Load-Sensor / Pulleys Specifications are as follows:

Model Load-Sensor (Pulley Diameter) [mm]
Directly around the axis*1 5mm 10mm 20mm 40mm
JP-R5N 0.5 N 1.25 mNm 2.5 mNm 5 mNm 10 mNm
JP -1N 1N 2.5 mNm 5 mNm 10 mNm 20 mNm
JP -2N 2N 5 mNm 10 mNm 20 mNm 40 mNm
JP -5N 5N 12.5 mNm 25 mNm 50 mNm 100 mNm
JP -10N 10N 25 mNm 50 mNm 100 mNm 200 mNm
JP -20N 20N 50 mNm  100 mNm 200 mNm 400 mNm
  • Directly around the axis *1: Torque and motor shaft diameters.
  • Using a pulley: torque ( mNm ) = Load – Sensor ( N ) x Pulley diameter ( mm ) / 2
  • Do not use pulleys: torque ( mNm ) = Load – Sensor ( N ) x Motor shaft diameter ( mm ) / 2

System specifications are as follows:

Brake Prony braking
Load-Sensor Six types: 0.5 N, 1 N, 2 N, 5 N, 10 N, 20 N
Sensor sensitivity DC 2 V / rating
Torque measurement precision Within ±1% of torque range
Maximum allowable load 200% of Sensor rating
Torque measurement range T = Sensor Rating × Pulley Diameter / 2
Computer Operating System Microsoft Win7
Power supply Single-phase AC 100 – 120 V ±10%, 50 / 60 Hz
Single-phase AC 200 – 240 V ±10%, 50 / 60 Hz

Options:

  1. Add Non-contact speed Sensor, which can measure the T/N curve of motor
  2. Add power-analyzer, which can measure the motor’s input V / A / W & motor efficiency