Pololu 2298 / 2296 NEMA 17 Sanyo Pancake Stepper Motor: Bipolar, 200 Steps/Rev

The Pololu 2298 / 2296 NEMA 17 Sanyo Pancake Stepper Motor is a compact bipolar stepper motor engineered for precision motion control applications requiring minimal axial depth. This motor delivers 200 steps per revolution with 1.9-degree step angle, making it ideal for robotics, 3D printing, CNC machines, and automated positioning systems where space constraints demand a low-profile solution. Professional engineers and hobbyists rely on this motor for its reliable torque delivery, smooth stepping performance, and proven Sanyo manufacturing quality.

Product Overview

The NEMA 17 Sanyo Pancake Stepper Motor operates on bipolar drive architecture, requiring a dedicated stepper driver circuit to energize its four coil terminals in precise sequence. Unlike unipolar motors, bipolar configuration delivers superior torque density and efficiency by utilizing both coil windings simultaneously, enabling this compact pancake form factor to achieve impressive holding torque while maintaining a shallow 20.4mm axial profile. The motor's 200 steps per revolution specification translates to 1.9-degree incremental positioning, providing excellent resolution for applications demanding smooth linear or rotational motion without microstepping complexity.

The Sanyo manufacturing heritage ensures consistent performance characteristics across production batches, with robust bearing design and precision-wound stator coils that withstand extended operational cycles. The pancake geometry makes this motor exceptionally valuable in space-constrained applications such as 3D printer Z-axis drives, robotic arm joints, automated camera pan-tilt systems, and precision laboratory equipment where traditional NEMA 17 motors would create bulky assemblies. The bipolar topology requires proper current limiting and decay mode selection in your driver circuit to prevent coil damage and optimize stepping accuracy.

Key Specifications

Specification	Details
Product Type	Bipolar Stepper Motor, NEMA 17 Pancake Format
Brand	Sanyo (Pololu Distribution)
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp
Steps Per Revolution	200 steps (1.9 degrees per step)
Motor Type	Bipolar Stepper, 4-wire configuration
Holding Torque	Approximately 3.2 kg-cm at rated current
Rated Current	1.5A per coil (typical bipolar drive)
Coil Resistance	2.8 ohms per coil
Axial Length	20.4mm (pancake profile advantage)
Shaft Type	5mm diameter with flat for positive drive engagement

Key Features

• Compact Pancake Design: Ultra-low 20.4mm axial profile enables integration into space-constrained assemblies without sacrificing torque performance or stepping precision
• Bipolar Drive Architecture: Superior torque density compared to unipolar motors through simultaneous dual-coil energization, delivering 3.2 kg-cm holding torque in minimal footprint
• 200 Steps Per Revolution: 1.9-degree step angle provides smooth motion and excellent positioning accuracy for precision applications without requiring microstepping complexity
• Sanyo Quality Manufacturing: Precision-wound coils and robust bearing design ensure consistent performance, extended operational life, and reliable stepping across temperature variations
• Standard NEMA 17 Mounting: Compatible with existing NEMA 17 mounting brackets and mechanical interfaces, simplifying integration into established robotic and automation platforms
• 4-Wire Bipolar Configuration: Straightforward wiring to standard stepper drivers with intuitive coil pairing for clockwise and counterclockwise rotation control

Applications and Use Cases

• 3D Printer Z-Axis Drive: The pancake profile eliminates vertical bulk in FDM printer designs while delivering sufficient torque for reliable bed leveling and height adjustment across print cycles
• Robotic Arm Joint Actuation: Compact form factor enables multi-axis robotic arms with reduced inertia and improved response time, critical for collaborative robot applications in manufacturing and research
• Automated Pan-Tilt Camera Systems: Low-profile motor design supports lightweight gimbal mechanisms for surveillance, aerial imaging, and laboratory microscopy automation without excessive counterbalancing
• CNC Machine Tool Positioning: Precision 1.9-degree stepping enables accurate XY table indexing and rotational tool changers in desktop CNC mills and laser engravers with space-efficient motor mounting
• Laboratory Automation Equipment: Medical diagnostic devices, sample preparation systems, and analytical instruments benefit from the motor's compact profile and deterministic positioning repeatability
• Precision Valve and Damper Control: Industrial process automation applications utilize the motor's holding torque for reliable position locking in flow control and pressure regulation subsystems

How to Use

To implement the Pololu 2298 / 2296 NEMA 17 Sanyo Pancake Stepper Motor in your project, first identify the motor's four coil terminals and verify your stepper driver supports bipolar operation with current ratings matching the motor's 1.5A per-coil specification. Connect the motor's A+ and A- terminals to one coil output pair on your driver, and B+ and B- to the second pair, ensuring polarity correctness to achieve desired rotation direction. Configure your driver's current limiting potentiometer to deliver 1.5A maximum current, set decay mode to fast or mixed decay depending on your stepping speed requirements, and program your microcontroller to generate the standard four-step bipolar sequence: (A+,B-), (A+,B+), (A-,B+), (A-,B-), repeating in sequence for continuous rotation.

Mount the motor using standard NEMA 17 hardware with the pancake profile oriented to minimize axial space consumption in your mechanical assembly. Verify mechanical coupling to your load through the 5mm shaft, ensuring the flat surface engages your coupling's set screw for positive drive without slip. During initial testing, operate at reduced stepping rates (500-1000 steps per second) to confirm smooth operation and verify your driver's current limiting is functioning correctly before advancing to higher speeds. The motor will generate audible stepping noise and slight vibration at certain stepping frequencies; if resonance occurs, implement microstepping in your driver firmware or adjust stepping rates to avoid mechanical resonance points in your specific load configuration.

Frequently Asked Questions

What is the difference between bipolar and unipolar stepper motors?

Bipolar motors energize both coil windings simultaneously through an H-bridge driver configuration, delivering superior torque density in a compact package. Unipolar motors use center-tapped coils with sequential energization of half-windings, requiring simpler drivers but producing lower torque. The Pololu 2298 / 2296 bipolar design achieves 3.2 kg-cm holding torque in its pancake profile, impossible with equivalent unipolar architecture. Bipolar motors require dedicated stepper drivers with H-bridge capability, while unipolar motors work with simpler transistor arrays.

Can I use this motor with standard Arduino stepper libraries?

Yes, the Pololu 2298 / 2296 works with Arduino stepper libraries when paired with a compatible bipolar stepper driver module such as the DRV8825, A4988, or TMC2209. Connect your Arduino's direction and step pins to the driver module, and the driver handles the H-bridge switching sequence automatically. The standard Arduino Stepper library or AccelStepper library will generate the correct step pulses and direction signals for reliable motor operation. Ensure your power supply provides adequate current capacity: at 1.5A per coil, worst-case current draw approaches 3A during simultaneous coil energization.

What torque can I expect at different stepping speeds?

The motor delivers maximum holding torque of approximately 3.2 kg-cm at zero stepping speed with rated 1.5A current. Torque decreases progressively as stepping frequency increases due to back-EMF effects and driver current limiting. At 500 steps per second, expect approximately 80 percent of rated torque. At 2000 steps per second, torque drops to roughly 40 percent of rated value. Microstepping at 16x subdivision can partially recover torque at high speeds by reducing current ripple and cogging effects. Test your specific load under actual operating conditions to verify adequate torque margin above your application's requirements.

What driver circuits are compatible with this motor?

The Pololu 2298 / 2296 requires bipolar stepper drivers rated for 1.5A per coil minimum. Compatible options include the Pololu DRV8825 (2.2A per coil), A4988 (2A per coil), TMC2209 (2A per coil), and L298N modules (2A per coil). Each driver offers different features: DRV8825 provides microstepping and decay mode control, TMC2209 includes advanced current sensing and stall detection, while A4988 offers cost-effective operation. Verify your chosen driver supports the stepping speeds required by your application; high-speed applications benefit from drivers with adjustable decay modes to minimize resonance.

Is microstepping beneficial for this motor?

Microstepping at 2x, 4x, 8x, or 16x subdivision significantly improves smoothness and reduces audible noise compared to full-step operation. At full-step resolution (200 steps per revolution), the motor exhibits noticeable cogging and vibration at certain frequencies. Microstepping distributes current transitions across intermediate coil states, reducing torque ripple and enabling smoother motion for applications like 3D printing and camera gimbals. The trade-off is reduced maximum stepping speed and slightly lower torque at high frequencies. For precision positioning applications, 8x or 16x microstepping provides excellent smoothness with minimal speed penalty.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

Buy Pololu 2298 / 2296 NEMA 17 Sanyo Pancake Stepper Motor: Bipolar, 200 Steps/Rev Online in India

Purchase the Pololu 2298 / 2296 NEMA 17 Sanyo Pancake Stepper Motor: Bipolar, 200 Steps/Rev online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat.

Our team in Bengaluru is available 24/7 to support your journey from product selection to project completion.