|Bipolar stepper motor wires are terminated with bare leads.|
|Sanyo bipolar stepper motor wiring diagram.|
This pancake bipolar stepping motor from Sanyo has a 1.8° step angle (200 steps/revolution). Each phase draws 1 A at 5.9 V, allowing for a holding torque of 2.2 kg-cm (30 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 Pololu recommend using a bipolar stepper motor driver.
Pololu's 5 mm universal mounting hub can be used to mount objects on the stepper motor’s 5 mm-diameter output shaft.
- Size: 50 mm square × 16 mm, not including the shaft
- Weight: 150 g (5.4 oz)
- Shaft diameter: 5 mm
- Steps per revolution: 200
- Current rating: 1 A per coil
- Voltage rating: 5.9 V
- Resistance: 5.9 Ω per coil
- Holding torque: 2.2 kg-cm (30 oz-in)
- Inductance: 3.2 mH per coil
- Lead length: 30 cm (12″)
More specifications are available in the datasheet (352k pdf).
The following diagram shows the stepper motor dimensions in mm. The dimension labeled “L” is 16 mm. Though the dimension diagram below shows output shafts on both sides, this stepper motor only has a single output shaft (on the side with the mounting plate) with a length of 5 mm and a diameter of 5 mm. This shaft works with Pololu's 5 mm universal mounting hub.
Pololu also carry a thinner version of this stepper motor where “L” in the above diagram is 11 mm and all other dimensions are the same.
|Bottom view of the 50×16mm 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:
- 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 originally called this product the “SANMOTION F2 stepping motor model SS2502-5041”, but as of October 2014, they are transitioning to using the new part number SS2502-8040. This is only a part number change; the product itself is exactly the same.
Documentation and Resources:
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