Sanyo Pancake Stepper Motor: Bipolar, 200 Steps/Rev, 42×11.6mm, 3.5V, 1 A/Phase

Bipolar stepper motor wires are terminated with bare leads.

Sanyo bipolar stepper motor wiring diagram.

Overview

This pancake bipolar stepping motor from Sanyo has a 1.8° step angle (200 steps/revolution). Each phase draws 1 A at 3.5 V, allowing for a holding torque of 850 g-cm (12 oz-in). The motor has four color-coded wires terminated with bare leads: red and yellow connect to one coil; orange and blue connect to the other. It can be controlled by a pair of suitable H-bridges (one for each coil), but we recommend using a bipolar stepper motor driver or one of our Tic Stepper Motor Controllers. In particular, the Tics make control easy because they support six different interfaces (USB, TTL serial, I²C, RC, analog voltages, and quadrature encoder) and are configurable over USB with our free configuration utility.

Our 5 mm universal mounting hub can be used to mount objects on the stepper motor’s 5 mm-diameter output shaft, and our NEMA 17 aluminum bracket offers a variety of options for mounting this stepper motor in your project.

This stepper motor is also available with a high-resolution quadrature encoder.

Specifications

• Size: 42 mm square × 11.6 mm, not including the shaft (NEMA 17)
• Weight: 70 g (2.5 oz)
• Shaft diameter: 5 mm
• Steps per revolution: 200
• Current rating: 1 A per coil
• Voltage rating: 3.5 V
• Resistance: 3.5 Ω per coil
• Holding torque: 850 g-cm (12 oz-in)
• Inductance: 1.2 mH per coil
• Lead length: 30 cm (12″)
• Output shaft supported by two ball bearings

More specifications can be found in the datasheet (385k pdf).

Dimensions

Side view of the 42×11.6mm Sanyo pancake stepper motor.

The following diagram shows the stepper motor dimensions in mm. The dimension labeled “L” is 11.6 mm. This stepper motor has a single output shaft with a length of 5 mm from the mounting face and a diameter of 5 mm. This shaft works with our 5 mm universal mounting hub.

We also carry a stronger, taller version of this stepper motor where “L” in the above diagram is 18.6 mm and all other dimensions are the same.

Bottom view of the 42×11.6mm Sanyo pancake stepper motor.

Stepper Motor Applications

Stepper motors are generally used in a variety of applications where precise position control is desirable and the cost or complexity of a feedback control system is unwarranted. Here are a few applications where stepper motors are often found:

• Printers
• CNC machines
• 3D printer/prototyping machines (e.g. RepRap)
• Laser cutters
• Pick and place machines
• Linear actuators
• Hard drives

Sanyo stepper motors; from left to right: 14mm single shaft, 42×18.6mm, 50×11mm, 14mm double shaft

Note: Sanyo Denki calls this product the “SANMOTION F2 STEPPING SYSTEMS TYPE SS2421-5041 (or SS2421-5041P)”.

People often buy this product together with:

Pololu Universal Aluminum Mounting Hub for 5mm Shaft, #4-40 Holes (2-Pack)

Stepper Motor: Bipolar, 200 Steps/Rev, 20×30mm, 3.9V, 0.6 A/Phase

Sanyo Pancake Stepper Motor: Bipolar, 200 Steps/Rev, 42×18.6mm, 5.4V, 1 A/Phase