Established in 1990, Fadong Power Co., Ltd. is a professional China stepper motor manufacturer and supplier of in the emergency power supply industry. We not only specialize in manufacturing different kinds of generators, but also in motors, engines, diesels, gearmotors and other power supply products. We also have more than 100 series of equipment to support and check our products, such as VPI equipment, auto painting lines, auto testing systems and CAD systems. We warmly welcome every customer to cooperate with us on the basis of mutual benefit, and hope to be your faithful friend and best partner. Our custom step motor has obtained the certifications of ISO9001-2000, GS/TUV, CE, VL, EPA, QHS, SON, CAP and SRS.

Holding Torque: 0.147 N.m (1.30 lb.in)
Step Angle: 1.8°
Voltage: 3.15 V
Current/Phase: 1 Amp
Ohm/Phase: 3.15 Ω
Inductance/Phase: 2.8 mH
Flange Size: 42 mm2 (1.65in2)
Connection: 6 Lead
Rotor Inertia: 0.03 kg.m2 (x10^4)
Mass: 0.2 Kg
Front Shaft Size: 22mm x 5mm
Rear Shaft Size: 15mm x 5mm
Stepper motors have six wire leads with a pre-wired 5-pin connector that plugs directly into the Sherline linear or rotary controller. Below are two diagrams showing the colors of the leads as they connect to the pins on the connector on both the older SKC and the current NMB stepper motors. The motors can also be purchased without the 5-pin connector for use in non-Sherline applications.If a stepper motor is to be used with a Sherline motor mount, the shaft going into the coupling should have a flat machined or ground on it where the set screw bites into it. If this is not done, the point of the set screw can upset the shaft sufficiently to make it impossible to remove it from the coupling. For non-Sherline applications, the flat may not be necessary.

Holding Torque: 0.37 N.m (3.27 lb.in)
Step Angle: 1.8°
Voltage: 3.96 V
Current/Phase: 1.2 Amp
Ohm/Phase: 3.3 Ω
Inductance/Phase: 3.4 mH
Flange Size: 42 mm2 (1.65in2)
Connection: 6 Lead
Rotor Inertia: 0.074 kg.m2 (x10^4)
Mass: 0.37 Kg
Most stepper motors have 6 wires, however there are motors with 4, 5, or 8 wires also. Each of the four coils is made up of one length of wire with two ends. One end is called live and the other end is called common. In a five-wire stepper motor all four commons are joined together, in a six-wire stepper motor two pairs of common wires are joined together, and in an eight-wire stepper motor none of the four common wires are joined together.
When the four-phases are brought together and rectified (more on rectification later) into direct current (DC), the total electricity generated therefore has a near constant voltage and current.

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