# Sanyo Pancake Stepper Motor with Encoder: Bipolar, 200 Steps/Rev, 42×24.5mm, 3.5V, 1 A/Phase, 4000 CPR **Type:** Product page · **SKU:** POLOLU-2278 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia) **Page:** https://core-electronics.com.au/sanyo-pancake-stepper-motor-with-encoder-bipolar-200-steps-rev-42-24-5mm-3-5v-1-a-phase-4000-cpr.html ([markdown](https://core-electronics.com.au/sanyo-pancake-stepper-motor-with-encoder-bipolar-200-steps-rev-42-24-5mm-3-5v-1-a-phase-4000-cpr.html.md)) This NEMA 17-size pancake bipolar stepping motor from Sanyo features an integrated high-resolution (1000 P/R) quadrature encoder that allows for 4000... ## Pricing - **Price:** $454.95 (inc GST) — $413.59 AUD, exc GST - **Quantity discounts:** 3+ $401.18 (exc GST) · 5+ $392.91 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Aug 17 and Aug 20. ## Description | [![](https://core-electronics.com.au/attachments/localcontent/0J4301_21501cc580f.jpg)](https://core-electronics.com.au/attachments/localcontent/0J4301_166092c56e0.jpg) | |---| | Bipolar stepper motor wires are terminated with bare leads. | | ![](https://core-electronics.com.au/attachments/localcontent/0J4307_1157645e221.jpg) | |---| | Sanyo bipolar stepper motor wiring diagram. | This NEMA 17-size pancake bipolar stepping motor from Sanyo features an integrated high-resolution (1000 P/R) quadrature encoder that allows for 4000 counts per revolution of the output shaft when counting both edges of both channels. The stepper motor itself has a 1.8° step angle (200 steps/revolution) and each phase draws 1 A at 3.5 V, allowing for a holding torque of 0.85 kg-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 Pololu recommend using a [bipolar stepper motor driver](https://core-electronics.com.au/breakout-boards-and-modules/motor-drivers-controllers/stepper-motor-drivers.html) or one of Pololu's [Tic Stepper Motor Controllers](https://core-electronics.com.au/breakout-boards-and-modules/motor-drivers-controllers/stepper-motor-drivers.html). 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 Pololu's free configuration utility. Pololu's [5 mm universal mounting hub](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-5mm-shaft-4-40-holes-2-pack.html) can be used to mount objects on the stepper motor’s 5 mm-diameter output shaft, and Pololu's [NEMA 17 aluminum bracket](https://core-electronics.com.au/pololu-stamped-aluminum-l-bracket-for-nema-17-stepper-motors.html) offers a variety of options for mounting this stepper motor in your project. This stepper motor is also available [without an encoder](https://core-electronics.com.au/sanyo-pancake-stepper-motor-bipolar-200-steps-rev-42-11-6mm-3-5v-1-a-phase.html). **Specifications** - Size: 42 mm square × 24.5 mm, not including the shaft (NEMA 17) - Weight: 105 g (3.7 oz) - Shaft diameter: 5 mm - Steps per revolution: 200 - Current rating: 1 A per coil - Voltage rating: 3.5 V - Resistance: 3.5 O 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 are available in the SS242x stepper motor datasheet (385k pdf) and the product-specific SS2421-50XE100 datasheet (568k pdf). **Dimensions** | [![](https://core-electronics.com.au/attachments/localcontent/0J7777_349700e8d7a.jpg)](https://core-electronics.com.au/attachments/localcontent/0J7777_71871f60de2.jpg) | |---| | Dimensions (in mm) of the SS2421-50XE100 42×24.5mm Sanyo pancake stepper motor with encoder. | Pololu also carry a [taller version of this stepper motor](https://core-electronics.com.au/sanyo-pancake-stepper-motor-with-encoder-bipolar-200-steps-rev-42-31-5mm-5-4v-1-a-phase-4000-cpr.html) with identical dimensions except for the height. The pictures below show this stepper motor on the left and the taller version on the right: | \| [![](https://core-electronics.com.au/attachments/localcontent/0J7762_168994e173c.jpg)](https://core-electronics.com.au/attachments/localcontent/0J7762_249431c3196.jpg) \| \|---\| \| Side view of the SS2421-50XE100 42×24.5mm Sanyo pancake stepper motor. \| | \| [![](https://core-electronics.com.au/attachments/localcontent/0J7768_189169f13aa.jpg)](https://core-electronics.com.au/attachments/localcontent/0J7768_312912dc123.jpg) \| \|---\|---\| \| Side view of the SS2422-50XE100 42×31.5mm Sanyo pancake stepper motor. \| | |---| **Quadrature encoder** | [![](https://core-electronics.com.au/attachments/localcontent/0J7776_6451233627c.jpg)](https://core-electronics.com.au/attachments/localcontent/0J7776_139136e1618.jpg) | |---| The integrated quadrature encoder operates from 5 V and has a resolution of 1000 P/R, which allows for 4000 counts per revolution (CPR) of the output shaft when counting both edges (i.e. rising and falling) of both channels (i.e. A and B). In addition to the A and B channel outputs, the encoder has a home channel, Z, that pulses once per revolution and can be used for absolute positioning. The encoder also has outputs for the inverse of A, B, and Z. A 15 cm (6") encoder cable is included. | \| [![](https://core-electronics.com.au/attachments/localcontent/0J7764_11928915f2c.jpg)](https://core-electronics.com.au/attachments/localcontent/0J7764_150606f8655.jpg) \| \|---\| | \| [![](https://core-electronics.com.au/attachments/localcontent/0J7765_8599a4f0af.jpg)](https://core-electronics.com.au/attachments/localcontent/0J7765_1744841a501.jpg) \| \|---\|---\| | \| [![](https://core-electronics.com.au/attachments/localcontent/0J7763_26419738a1c.jpg)](https://core-electronics.com.au/attachments/localcontent/0J7763_24708b0331b.jpg) \| \|---\|---\| | |---| | [![](https://core-electronics.com.au/attachments/localcontent/0J7761_36432eff1a6.jpg)](https://core-electronics.com.au/attachments/localcontent/0J7761_45184d08e4b.jpg) | |---| | Bottom view of the 42×24.5mm Sanyo pancake stepper motor with encoder. | **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 | ![](https://core-electronics.com.au/attachments/localcontent/0J4306_4154284e0c4.jpg) | |---| | 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 SS2421-50XE100”. **People often buy this product together with:** | [![Pololu Universal Aluminum Mounting Hub for 5mm Shaft, #4-40 Holes (2-Pack)](https://core-electronics.com.au/attachments/localcontent/0J2468_33052118e3.jpg)](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-5mm-shaft-4-40-holes-2-pack.html) | [Pololu Universal Aluminum Mounting Hub for 5mm Shaft, #4-40 Holes (2-Pack)](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-5mm-shaft-4-40-holes-2-pack.html) | |---|---| | [![Pololu Stamped Aluminum L-Bracket for NEMA 17 Stepper Motors](https://core-electronics.com.au/attachments/localcontent/0J5626_2887ef923a.jpg)](https://core-electronics.com.au/pololu-stamped-aluminum-l-bracket-for-nema-17-stepper-motors.html) | [Pololu Stamped Aluminum L-Bracket for NEMA 17 Stepper Motors](https://core-electronics.com.au/pololu-stamped-aluminum-l-bracket-for-nema-17-stepper-motors.html) | |---|---| **Dimensions** | Size: | 42 mm square × 24.5 mm (NEMA 17)[1](https://core-electronics.com.au/#note1) | |---|---| | NEMA size: | 17 | | Weight: | 105 g | | Shaft diameter: | 5 mm | **General specifications** | Current rating: | 1000 mA[2](https://core-electronics.com.au/#note2) | |---|---| | Voltage rating: | 3.5 V | | Holding torque: | 11.8 oz·in | | Steps per revolution: | 200 | | Resistance: | 3.5 Ohm[2](https://core-electronics.com.au/#note2) | | Inductance per phase: | 1.2 mH | | Number of leads: | 4 | | Lead length: | 30 cm[3](https://core-electronics.com.au/#note3) | | Encoders?: | Y | | Encoder resolution: | 4000 CPR[4](https://core-electronics.com.au/#note4) | **Notes:** 1Not including the shaft.2Per coil.3This applies to the stepper motor leads only. The included removable encoder cable is 15 cm (6") long.4Relative to the output shaft, counting both edges (rising and falling) of both channels (A and B). **File downloads** - **Sanyo Sanmotion F2 42mm SS2421 and SS2422 stepping motor datasheet (385k pdf)** - **Sanyo Sanmotion F2 42mm SS2421-50XE100 stepping motor with encoder datasheet (568k pdf)** ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_9915.jpg)