“In a YouTube video titled "Testing a NEMA 34 12 N.m Closed Loop Stepper Motor", the creator tests the motor for a large CNC machine rebuild. The review highlights the motor's significant power, which is necessary for moving heavy axes. A key feature praised is the closed-loop system with an encoder that automatically corrects any missed steps, making the system very reliable even when pushed to its limits. The driver enters an alarm mode and shuts down if it detects a stall, preventing issues that can occur with open-loop steppers. The creator initially had issues with a Mach3 motion card but successfully switched to an Arduino Nano with GRBL, which worked well.”

“A user on the V1 Engineering forum shared a highly positive experience with a Stepperonline closed-loop stepper motor. The user was "blown away" by the motor's power and speed, noting that it runs cool (under 30°C) because the closed-loop system only draws the necessary current. The user also praised the system's reliability, stating that after pushing the motor to its limits to find the point of failure, they were able to configure it for very reliable motion with high repeatability. The system's ability to throw a "position error" alarm and shut down in case of a stall was also highlighted as a key benefit, preventing potential damage to the machine.”