Specifications

Step Motor:
1. High torque hybrid bipolar or unipolar
2. Step angle 0.9 or 1.8 degree
3. 178 oz.in, 268 oz.in and more

Step Motor:

Step angle 0.9 degree or 1.8 degree high torque hybrid bipolar or unipolar step motor

1. High torque hybrid bipolar or unipolar
2. Step angle 0.9 or 1.8 degree
3. 178 oz.in, 268 oz.in and more

 

Size 57mm High Torque Hybrid Step Motor Specifications:

Series Model	Step Angle (°)	Motor Length (mm)	Rated Current (A)	Phase Resistance (Ω)	Phase Inductance (mH)	Holding Torque (Kg.cm Min)	Rotor Inertia (g.cm²)	Lead Wire (NO.)	Motor Weight (g)
UIM57-a	1.8	51	1	5.8	17	9	190	4	560
UIM57-b	1.8	56	2.8	0.9	2.5	12.6	300	4	700
UIM57-c	1.8	76	2.8	1.13	3.6	18.9	480	4	1000
UIM57-d	1.8	115	2.8	2.1	10	30	650	4	1800

 

Step Motor integrated with UIM step driver

 

Unipolar motors

These motors typically have 6 wires, where two of those wires are usually connected to ground, also called ‘common’ or common ground. This leaves 4 wires for control. When a voltage is applied to a control wire, current will flow from that wire to ground. When no voltage (0 volts) is applied to a control wire, no current will flow to or from that control wire. These wires are usually called A, ~A, B, ~B. When A is 1, ~A is 0. Similarly with B and ~B. This scheme means that at any given time, at least half the wires in unipolar motors are not activated. This means that if a unipolar and bipolar motor are the same weight, the bipolar motor will almost certainly be stronger. This also means that the unipolar motors are slower, because less torque is being applied. So in short, unipolar motors are heavier, weaker, and slower than bipolar motors. The only real advantage to unipolar motors is that they require less power than bipolar motors. Powerful power supplies can be expensive, so it may be slightly cheaper to buy and use unipolar motors.