Introduction

In the world of industrial motion control, NEMA 23 is by far the most widely used stepper motor size. It strikes a sweet spot between torque, cost, and compactness—making it ideal for CNC machinery, 3D printers, and industrial automation.

So, why do some engineers still insist on using NEMA 24, a motor size just a few millimeters larger than NEMA 23? Let’s break it down.

Size Isn’t Everything—But Torque Is

Although NEMA 23 and NEMA 24 share similar mounting hole patterns and external profiles, NEMA 24 motors typically deliver up to 15–20% more holding torque at the same voltage and current levels. That extra torque can be a game-changer for:

l Heavy gantry motion

l Mid-sized delta robots

l Vertical Z-axis loads (where gravity adds resistance)

l Packaging lines needing precise force control

For OEMs building compact machines with strict torque requirements, NEMA 24 often delivers more muscle without breaking space constraints.

Compatibility Considerations

From a mechanical standpoint, many NEMA 23 mounts can be adapted to NEMA 24 motors with minimal modification. This makes NEMA 24 a natural upgrade path when more torque is needed—without stepping up to bulkier NEMA 34 motors.

Moreover, some manufacturers (including StepMotech) offer dual NEMA 23/24-compatible flange options, easing integration into existing systems.

Use Cases We’re Seeing

At StepMotech, we’ve seen NEMA 24 motors increasingly used in:

High-speed labeling machines (where NEMA 23 stalls)

Semiconductor tray loaders

Mini conveyor actuators in cleanroom applications

Precision lab automation where noise and heating are constrained

In short, when power density, vibration control, and footprint all matter—NEMA 24 hits the sweet spot.

Final Take

While NEMA 23 remains the industry’s workhorse, NEMA 24 shouldn’t be overlooked. It offers a strategic upgrade path for engineers pushing performance boundaries within tight design envelopes.

If you're unsure whether a NEMA 23 or NEMA 24 is right for your next design, our team is happy to help with free motor selection consulting and torque analysis.

Message us directly or visit StepMotech.com to explore our full NEMA 24 lineup.

By Ryan Moore, Automation Specialist at StepMotech