Articles About basics
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Beginning with this initial installment — and with the gracious permission of ABB/Baldor Electric — we are pleased to announce the beginning of a new series — Baldor Basics: Motors. This is a collection of basicsdriven, motor-intensive articles authored by former Baldor engineer Edward Cowern, PE — a respected name by many in the electric motor industry. During his tenure at Baldor, Cowern — now enjoying his retirement — was tasked with producing a number of motor- and basics-related tutorials, primarily in response to a steady flow of customer questions regarding motors. Today’s customers continue to ask questions and seek answers to address their various motor-related issues. As with Cowern’s original introduction to the series, we hope you find these articles useful and would appreciate any comments or thoughts you might have for future improvements, corrections or topics.
This issue we cover frame sizes and two-speed motors in our continuing series of articles, courtesy of Baldor Electric, dedicated to motor basics.
A discussion of the basics in DC drives, DC motors, AC drives, AC motors and synchronous motors.
A good deal of confusion exists regarding the factors that determine an industrial electric bill. The following information is presented to help sort out the various items on which billing is based, and to offer suggestions on measures to help control and reduce electric utility bills.
Fans, blowers and other funny loads are addressend, along with RMS Horsepower loading.
In the process of applying industrial drive products, we occasionally are misled into believing that we are applying horsepower. The real driving force is not horsepower - it is torque. This paper is developed to impart a deeper understanding of torque, its relationship to horsepower, and the types of loads we most frequently encounter.
Part 1: There seems to be a lot of confusion about the voltage standards for motors and why they are structured the way they are. Part 2: The effect of low voltage on electric motors is pretty widely known and understood, but the effect of high voltage on motors is frequently misunderstood.
Amps, Watts, Power Factor and Efficiency; Approximate Load Data from Amperage Readings; Power Factor Correction on Single-Induction Motors.
Conservation through lighting alterations using different bulbs, ballasts and light sources is well understood and easy to achieve. The use of improved efficiency three phase induction motors has not been as accepted. There are a number of reasons why conservation efforts with motors have not been as popular.
This issue our Baldor Basics series continues with the topics of motor temperature ratings and metric motors.
A brief overview of the induction motor, including the basics of construction, performance and variable speed drives.
Understanding proper bearing lubrication procedures is critical to ensuring long-term, trouble-free performance. Klüber Lubrication has prepared this explanation as a general guide.
With today's smaller, hotter - and overloaded - machinery, specifying the correct lubricant is vital.
If you’re an electrical engineer you know how an electric motor works; if you aren’t, it can be extremely confusing. Therefore, here’s the simplified explanation (or the “how an electric motor works for dummies” version) of how a four-pole, three-phase AC induction motor works in a car.
I need help determining the diametral pitch needed to achieve the closest center-to-center distance for 2 spur gears. The 1st gear is a 34-tooth and the 2nd gear is a 28-tooth. The center-to-center distance between the gears needs to be as close to 2 1⁄8" as possible.
Everything started in 1800 when Volta developed the first DC battery. Faraday used the DC battery to develop the first electric motor. It used brushes to transfer the battery voltage and current to the rotating disk rotor. This was in mid-1831. Thus was born the brush DC motor.
This paper summarizes the chemical, metallurgical and physical aspects of bearing steels and their effect on rolling bearing life and reliability.
In most cases, industrial power transmission calls for flexible rather than rigid couplings in order to forgive minor shaft misalignment. For that reason, this article will focus solely on the selection of flexible couplings.
Mounted ball bearings are everywhere in industrial applications. They serve critical roles in keeping a manufacturing operation running smoothly and in ensuring that equipment functions properly and reliably. So why might it be advisable to spend significantly more for a dimensionally comparable bearing from one supplier versus another?
When designing a spur-crown pair, is there a formula, guideline or design guide for adapting the spur teeth for the radial angle of the teeth in the crown?
This article summarizes some common hurdles, issues and questions encountered by the newer and casual users of tapered roller bearings.
"Well begun is half done," a quote that most reference materials attribute to Aristotle, certainly applies when selecting mechanical power transmission products. A selection process that is well thought out at the start can ensure that the product selected will be properly sized and appropriate to the application at hand.
A reader asks: I've determined that a stainless steel bearing is the best option for my application. I'm being asked to specify the grade of stainless steel in my product design. I'm not sure which grade to select and specify. Can you help?
How does one draw and mesh involute gear teeth in AutoCAD?
What are the best methods to adjust tapered roller bearings?
There are thousands of sizes and types of standard bearings. In many applications, specifying a standard bearing yields an effective result.
The question is whether or not a customer can save time and money using a step motor. It is followed by another on the differences between brush and brushless motors...
BEARINGS BASICS Q&A: IN CASE YOU DIDN’T KNOW…
The 8th International CTI Symposium on Automotive Transmissions, HEV and EV Drives took place in Rochester, Michigan from May 12-15. The event kicked off with its popular introductory seminar "Basics and Practice of Automotive Transmissions."
News Items About basics
1 Yaskawa America Introduces eLearning Module for Drive Basics (August 30, 2017)
Yaskawa Americas recently released a Drive Basics eLearning module on its website. This eLearning module provides a basic understanding o...