Is There a Good Motor to Speed Up the Positioning of One Revolution?

Oh, Vex, you look so dull.
I was told by a customer that they wanted to reduce the takt time of equipment that positions one revolution at a time. They also said... "We would like you to propose a motor that can reduce costs at the same time." (Sweat)
What kind of motor do you want to propose, Vex?
I've heard before that stepper motors are faster for short positioning and servo motors are faster for long positioning, but since stepper motors generate less torque in the high-speed range, I think servo motors can make positioning faster.

●Comparison of stepper motor and servo motor characteristics (reference)
(Speed-torque characteristics of a motor with a 60 mm frame size)
I see. Then check out this data!
This data compares the positioning time for each rotation amount of an index table mechanism directly connected to a motor using a stepper motor and a servo motor of approximately the same size.

●Index table mechanism Comparison of rotation-positioning time (Reference)
- Index table mechanism
For positioning of about two revolutions, both stepper motors and servo motors can position in about the same amount of time.
Yes, surprisingly not everyone knows that.
If the positioning is short as one revolution, the amount of rotation is small, so the deceleration motion may occur immediately after acceleration. So, in many cases, high speed rotation is not actually required.
With a positioning of about one revolution, the required maximum speed is often about 1500 r/min.

●Difference in required speed for rotation amount (image)

In addition, servo motors have a deviation between the command position and the actual operating position, so there is some settling time when positioning is completed. Thus, even with servo motors, known for their high speed and high torque, it can be difficult to save time.
Conversely, a stepper motor operates in synchronization with a command, with no deviation or settling time, so it may be able to complete its operation faster.
So if you think about positioning over a short distance, the positioning times of a stepper motor and a servo motor are actually almost the same.
I see!! The fact that a stepper motor can perform the same fast positioning operation as a servo motor... I can recommend the 5-phase stepper motor RKII Series, αSTEP AR Series, and αSTEP AZ Series that can be used with AC input. αSTEP is open loop in normal operation and closed-loop in abnormal operation, so it is as reliable as a servo motor!
Since they wanted to cut costs this time, the RKII Series with a list price starting at 43,400 JPY seems like a good choice. Just make sure you introduce the best motor for the customer's usage.
Yes! I will introduce RKII Series or αSTEP motors after hearing the customer's request properly.
If the customer wants to select the type of the motor, they can use the "motor sizing tool". The customer can do it on the web, so they can select at any time, and it's also a good tool if they want to make a tentative selection while changing the values. You should also introduce the motor sizing service of Oriental Motor.
Of course! Now, I'm off to introduce the motor to the customer right away!