|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 4.5 V, allowing for a holding torque of 1 kg-cm (14 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 × 11 mm, not including the shaft
- Weight: 90 g (3.2 oz)
- Shaft diameter: 5 mm
- Steps per revolution: 200
- Current rating: 1 A per coil
- Voltage rating: 4.5 V
- Resistance: 4.5 Ω per coil
- Holding torque: 1 kg-cm (14 oz-in)
- Inductance: 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 11 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 stronger, taller version of this stepper motor where “L” in the above diagram is 16 mm and all other dimensions are the same.
|Bottom view of the 50×11mm 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 SS2501-5041”, but as of October 2014, they are transitioning to using the new part number SS2501-8040. This is only a part number change; the product itself is exactly the same.
This product is listed in:
Documentation and Resources:
- The Maker Revolution
The Maker Revolution celebrates the creation of new devices and the modification of existing ones - the transition from a consumer buying goods to eventually having a major part in their creation. The Maker Revolution places strong emphasis on free (...
- Motor Drivers vs. Motor Controllers
If you’ve ever built a robot with wheels, or any motorised parts really, you’ll have come across the issue of needing to drive it from your microcontroller. Because a standard chip is only able to output a small amount of current, you&rsq...
We deliver Australia-wide with these options:
- $3 for Small Items (4-6 days, not tracked, only available on selected small items)
- $6.95 for Standard Post (2-4 days, tracked)
- $8.32 for Express Post (1-2 days, tracked)
- Pickup - Free! Only available to customers who live in the Newcastle region (only after we email you to notify your order is ready)
International Orders - the following rates are for New Zealand and will vary for other countries:
- $11.49 for Pack and Track (3+ days, tracked)
- $16.50 for Express International (2-5 days, tracked)
If you order lots of gear, the postage amount might increment based on the weight of your order.
Our physical address:
Unit 18, 132 Garden Grove Parade
Please checkout our customer service page if you have other frequently asked questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.