Power Transmission Using a Hollow Pipe

First Quality ~ First Time

Apparatus Repair & Engineering, Inc.

A.R.&E. is the Premier Electric Motor Sales, Service, and Repair facility in the quad-state region of Maryland, Pennsylvania, West Virginia, and Virginia. This business began in 1927, and we are proud to continue the efforts of the founding partners who have served the local Commercial and Industrial markets over these many years. Times have changed in the many years since the inception of this business, and A.R.&E. is growing and changing with the times. Today the use of AI, computers, and factory automation is necessary for businesses to remain competitive in the global market, and A.R.&E. is here to assist with those challenges. And we promise our work will be... First Quality ~ First Time.

Open for Business

A.R.&E is Open For Business! Monday through Friday, 8:00AM until 5:00PM, and 24/7 for emergencies. Call us at (301) 739-8285

NEW Location

We're OPEN for business but at a DIFFERENT location. Come to 17500 York Road, Hagerstown, MD 21740 (the Halfway Area) for the same excellent service you've been used to receiving.

Did I Mention We're Open?

Apparatus Repair & Engineering is Open for Business... 8 to 5, Monday through Friday and 'round the clock service for emergencies. (301) 739-8285 gets you all the help you need.

Coronavirus - CoVid-19

What the virus looks like under atomic magnification. (Photo courtesy CDC.gov)

Turning the Corner in Asia

Looks like China and South Korea have turned the corner on NEW cases of the virus. That's what Social Distancing will do for us, too. Let's all get with the program.

Latest Worldwide Stats

This chart is the top 10, of 204, countries listed in the world by ranking of total infections. You can click this slide photo to be taken to the full list on the web. While it's not appealing to be #1 on this list, other columns show that our stats are certainly not as bad as some, when you consider our population compared to others.

Did You Hear? We're Open For Business!

Social distancing and use of hand sanitizer is key to protection. (Photo courtesy CDC.gov / Amanda Mills

Social Distancing

This is not some "pie in the sky" theory! This really works! Look at the results in China and South Korea. But EVERYONE has to participate. Beach goers bring the virus BACK to the folks that are fighting in the trenches and ruin everything we're trying to do. Get with the program, folks!

Social Distancing

This is not some "pie in the sky" theory! This really works! Look at the results in China and South Korea. But EVERYONE has to participate. Beach goers bring the virus BACK to the folks that are fighting in the trenches and ruin everything we're trying to do. Get with the program, folks!

There's Hope!

We're in this together isn't just a slogan... it's a fact! We'll get through it but we've all got to do our part. Have Faith, and remember that "We're in this Together".

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Sleeve Couplings

Sleeve Coupling

A "Sleeve Coupling" is pretty straight forward, if you look at the picture above. Some instances refer to this coupling as a "Muff Coupling" or maybe a "Split Muff Coupling", probably referring to the shape of the coupling in comparison to a "Muff" used to keep one's hands warm in colder climates. In either case, it is basically a piece of round steel stock, (maybe even considered a pipe) bored to some internal dimension (as necessary), usually having a keyway cut, then the sleeve is cut in half and bolts (or in this case) cap screws bored and threaded to hold the two halves together. In smaller units, the method of "attachment" to the shafts may simply be an "Allen Set Screw". Usually that set screw is positioned over the keyway so that it tightens onto the key to hold it in place, also. If we talk about REALLY SMALL sleeves, they may only have the set screw and rely totally on that object to transmit the torque as well as hold the coupling in place. In this case we're talking here about "micro" or "mini-fractional" horsepower motors and equipment. That's it!

And while this is the simplest of "Sleeve Couplings", there are certainly modifications and hybrids that do the same thing but with somewhat different characteristics. One thing that all of them will have in common is that they are part of the "Rigid Coupling" family. When this coupling is bolted  together around two mating shafts, there isn't any room for flexibility and/or misalignment. Transmission of power is 100% with no loss due to friction or flexing of the torsional member... 'cause there simply isn't any! Based on the fact that angular and parallel alignment is a REAL issue, we definitely recommend Laser Alignment or expert dial indicator alignment of equipment at installation.

A final note on the "Sleeve Coupling" has to do with a hybrid that we find in numerous pieces of equipment requiring repair. Specifically, the shaft coupling on hoist motors designed by Reuland on various manufacturer's hoists and cranes. This coupling is a "Sleeve" but rather than being split, and having a smooth (or keyed) bore, this "Sleeve Coupling" is "splined" it's entire bore length. Again, this is just an example of a hybrid on a specific application.

A.R.&E. can assist you in the proper selection of any application requiring a "Sleeve Coupling". So give us a call.