Engineering Notes by Oriental Motor

Welcome to Oriental Motor's "Engineering Notes" Blog:

Products and technology are only valuable when coupled with skilled people and services to support them. ORIENTAL MOTOR U.S.A. CORP. has dedicated over 33 years to establishing a service and support system to better serve customers. It is our goal to provide the best product and service from the design phase, through the sale and beyond.

Our blog will feature:

  • Introductions to New Products and Technology
  • Application Examples, Improvements and Problem Solving
  • Tips and Recommendations for Motor Selection, Installation and Use

Motor Sizing Basics Part 2: Load Inertia

Posted by Johann Tang on Jan 17, 2020 7:51:53 PM

Other than torque or speed, another factor should be considered when sizing motors.  

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Topics: AC Motors, Stepper Motors, Alphastep Hybrid Control, Linear & Rotary Actuators, Speed Control, Motor Sizing, BLDC Motors, Gearheads, Servo Motors, Rotary/Index Tables

Motor Sizing Basics Part 1: Load Torque

Posted by Johann Tang on Jan 14, 2020 8:14:54 PM

Proper sizing of a motor requires that 3 criteria must be met: torque, load inertia, and speed.  For the first part of this Motor Sizing Basics series, I will be explaining what load torque is, how to calculate it for specific application examples, and how it fits into the torque requirement for the application.

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Topics: Conveyor, AC Motors, Stepper Motors, Alphastep Hybrid Control, Linear & Rotary Actuators, Speed Control, Motor Sizing, BLDC Motors, Servo Motors, Rotary/Index Tables

3 Ways to Troubleshoot AC Motors with a Circuit Tester

Posted by Johann Tang on Dec 27, 2019 8:36:17 PM

An AC motor is not working like it's supposed to.  What do you do?  Before replacing the motor, here are three ways to start troubleshooting your AC motor with a circuit tester.

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Topics: AC Motors, Troubleshooting

What Does a Capacitor Do?

Posted by Johann Tang on Dec 26, 2019 4:55:25 PM

For a permanent-split capacitor type AC motor (also known as capacitor start and run AC motors), a capacitor is required for proper operation.  Enjoy a cup of coffee as we explain why.

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Topics: AC Motors

Show & Tell: AC Reversible Motors and AC Electromagnetic Brake Motors

Posted by Johann Tang on Nov 21, 2019 8:38:57 PM

AC motors have the same operating theory, but by changing its design a little, you can modify its characteristics to suit certain applications better.  In the last post, I focused on AC induction motors for unidirectional applications.  In this post, I will explain what makes AC reversible motors and AC electromagnetic brake motors ideal for start/stop, reversing, or vertical applications, and demonstrate how to operate them.

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Topics: AC Motors, VIDEOS, Application Examples

Show & Tell: AC Induction Motors

Posted by Johann Tang on Oct 31, 2019 8:50:19 PM

AC motors are simple to control, rugged, and cost effective for general purpose applications.  These reasons are why they are the most popular type of electric motor across various industries.  In this post, we will briefly introduce induction motors and demonstrate how to operate these motors.

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Topics: AC Motors, VIDEOS, Application Examples

Eliminate Motor Speed Fluctuations Caused By Input Voltage or Load Variance

Posted by Johann Tang on Jun 21, 2019 6:57:39 PM

An AC motor can be simple to use, but its speed changes according to the size of the load or amount of voltage supplied.  For an application where keeping a uniform speed is important, there is another type of motor that can improve performance.

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Topics: AC Motors, Speed Control, VIDEOS, BLDC Motors, Feedback Control, Application Examples

Improving Stop Accuracy for Start/Stop Conveyors (VIDEO)

Posted by Johann Tang on May 7, 2019 1:32:29 PM

Are you using motors for a start/stop conveyor or similar application?  While AC motors are a common choice for conveyors, there is a unique speed control motor solution available that could improve stop accuracy as well as reduce footprint and cost of machine designs.

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Topics: Conveyor, AC Motors, Stepper Motors, Stepper Motor Drivers, Speed Control, VIDEOS, Application Examples

Better Motor Alternatives for Variable Speed Pumps (VIDEO)

Posted by Johann Tang on May 6, 2019 8:03:26 PM

What motors do you use for pumps?  For variable speed pump applications that typically use 3-phase AC induction motors with variable frequency drives (VFDs), there is another type of motor that can transfer fluids more consistently and help reduce footprint.

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Topics: AC Motors, Speed Control, VIDEOS, BLDC Motors, Pumps, Application Examples

Right Angle Gearheads: Why are Hypoid Gears Better Than Worm Gears?

Posted by Johann Tang on Apr 17, 2019 10:00:00 AM

Historically, worm gears have been known as the most common type of gears used in a right angle gearhead.  Their low cost and robust construction have been sufficient for general purpose applications.  However, they are inefficient at slower speeds (higher reduction ratios), produce a lot of heat, take up a lot of space, and require maintenance.  As efficiency standards became increasingly important globally, another type of gear is being adopted for right angle gearheads.

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Topics: AC Motors, Speed Control, BLDC Motors, Gearheads, Hypoid Gear