Sonam
12-17-2007, 11:35 AM
hi...
i have to make a screw jack for lifting a load of around 4.5 kg (external load + wt. of jack's links and platform + friction). I have to use a motor to rotate the screw at around 50-60 rpm using max 12 V DC supply only. I need to lift the load to a height of around 30 cm (+- 0.5 cm) and then bring it down. So i will need a high torque slow speed motor...
I can use a geared DC motor or a stepper motor... I have got a stepper motor for free from a friendly workshop... There is no label on the motor so I cant identify it...
These are the dimensions of the stepper motor i have:
Shape : square with side 41mm
Length : 45mm
Shaft dia : 5 mm
Shaft length : 25 mm on one side and 10 mm on other.
Wires : 6
Step : approx 3.5 degrees
Resistance between Common and other terminals : 20.2 ohms
Please help:
1. Which motor to use : DC Geared or Stepper (or maybe universal???)
2. Contacts for getting these motors in Pune or Ahmedabad
3. Circuit diagrams
i have to make a screw jack for lifting a load of around 4.5 kg (external load + wt. of jack's links and platform + friction). I have to use a motor to rotate the screw at around 50-60 rpm using max 12 V DC supply only. I need to lift the load to a height of around 30 cm (+- 0.5 cm) and then bring it down. So i will need a high torque slow speed motor...
I can use a geared DC motor or a stepper motor... I have got a stepper motor for free from a friendly workshop... There is no label on the motor so I cant identify it...
These are the dimensions of the stepper motor i have:
Shape : square with side 41mm
Length : 45mm
Shaft dia : 5 mm
Shaft length : 25 mm on one side and 10 mm on other.
Wires : 6
Step : approx 3.5 degrees
Resistance between Common and other terminals : 20.2 ohms
Please help:
1. Which motor to use : DC Geared or Stepper (or maybe universal???)
2. Contacts for getting these motors in Pune or Ahmedabad
3. Circuit diagrams