In the world of mechanical engineering, everything revolves around reliability, safety and efficiency. Machine builders, OEMs and engineers know that every component in a system must meet strict requirements – from the motor to the housing. Yet the importance of NEMA classifications is often underestimated. At Rotero, we are happy to help you move forward with knowledge and components that really make a difference.
What do NEMA 17, 24 and 34 actually mean?
NEMA stands for National Electrical Manufacturers Association, the American standard for enclosures for electrical components.
For stepper motors, the NEMA number refers to the size of the flange and the mounting hole pattern. The most common models refer to NEMA classifications 17, 23/24 and 34. Rotero is happy to provide you with an overview of common flange sizes for stepper motors:
- NEMA 17: Compact size (42×42 mm), often used in 3D printers, medical equipment and lightweight pick-and-place machines.
- NEMA 23/24: Medium size (56×56 mm), suitable for CNC applications, automatic transport lines and robots.
- NEMA 34: Larger motors (86×86 mm) for heavy-duty applications such as packaging machines, industrial actuators and bulky positioning systems.
Mounting specifications
In addition to the external dimensions, the NEMA standard also describes the mounting flange, mounting holes and shaft diameter, placement of mounting holes and other physical characteristics. This ensures compatibility between motors from different manufacturers that use the same NEMA size.
At Rotero, we supply high-quality NEMA motors from NEMA 6 to NEMA 34, including brands such as DINGS, JVL, Oriental Motor and PMW Dynamics, which excel in precision, reliability and configurability. Thanks to their standard dimensions, these motors are easy to integrate into international machines or interchangeable with existing systems.
➡️ View our range of motors and drives with NEMA specifications
Why choose Rotero for NEMA issues?
At Rotero, we combine technical expertise with a wide range of premium brands. Whether you are looking for a NEMA 17 stepper motor for your robot project or a fan that can withstand winter conditions in accordance with NEMA 3R, we are happy to help you with advice and components that really fit your design.
Our engineers will work with you to find the right choice for your application, including alternatives to existing designs or outdated components.
Want to know more? Contact us or call our specialists in the United Kingdom or Ireland. We will ensure that your machine construction project meets the highest standards – including NEMA.
