Product Details:
This uni-polar motor has a built in mounting plate with two mounting holes. There are only 8 steps per revolution, but inside is a 1/64 reduction gear set. What this means is that there are really 8*64 steps per revolution = 512 steps! The shaft is flattened so its easy to attach stuff to it with a set-screw. A perfect first stepper motor and works well with the Motor Shield for Arduino®.
The gearing has a few side effects which are important to note. First, you can turn the stepper by hand but not as smoothly as an un-geared stepper. It also means you shouldn't use interleaved or micro-stepping to control or it will take forever to turn. Instead use single or double stepping. The torque is fairly high but its slower than un-geared steppers -maxed out at about 80 RPM by over-driving it a bit with 9VDC.
Specifications:
• Unipolar stepper with 0.1" spaced 5-pin cable connector • 8 steps per revolution • 1/64 geared down reduction • 5V DC suggested operation • Weight: 37 g. • Dimensions: 28mm diameter, 20mm tall not including 9mm shaft with 5mm diameter • 9" / 23 cm long cable • Holding Torque: 150 gram-force*cm, 15 N*mm/ 2 oz-force*in • Shaft: 5mm diameter flattened
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