Chain and Sprocket Systems

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.

Fabrication Generators Spray Welding Rewinding Happy Thanksgiving


This is an example of an automated oil dispensing tank and pump system that was totally designed and built by A.R.&E. for a local manufacturer...

Generator Install

Here's what an emergency generator installation can look like when A.R.&E. is involved...


Sometimes it's necessary to "buildup" a metal surface that's been damaged by wear. Metalizing is one method of doing just that...


Total rewind of a customer's electric motor. Sometimes, though no one's fault, an electric motor "burns up." That's when our rewind department shines. Here's the technician is rewinding this small motor, and in a couple of hours it'll be "as good as, (or better than) new"...


Turkey and dressing is the classic dinner at this time of year. Thanksgiving Day is an annual national holiday in the United States and Canada celebrating the harvest and other blessings of the past year. The American tradition has us attempting to recreate the dinner between the Pilgrims and the Native Americans. However you celebrate, we at Apparatus Repair & Engineering, Inc. want to wish you all a Safe, Blessed and Happy Thanksgiving.

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Chains and Sprockets

Chains and Sprockets

Chains and sprockets are the equivalents of belts and sheaves except made of metal and having "teeth" to drive them rather than the friction on the sides. A chain and sprocket are used primarily when one needs the driver and driven shafts to turn in true synchronism without worrying about any "slippage".

A chain is an assembly of "links", connected in a long, single, piece. They are usually made of steel but depending on application and environment, may be made of other material such as Nylon or Teflon, used in the food processing industry. There are two types of chains, based on their use and application.

The first type has links that are fabricated of "round bar stock" formed into an "oval" shape ad welded together, which allows the chain to have movement in two directions. This type of chain is commonly used for "lifting" (such as hoists), towing heavy loads, or securing loads on a truck for hauling. It is also the type of chain used on the "anchor" of a ship. If your interested in the details of this type of chain, you can open this link to the specs for "Welded Steel Chain" as published by the NACM (National Association of Chain Manufacturers). This type of chain has been traced back to the Second Century BC.

 The second type is the "roller chain", which is what we are going to discuss in our topic. Chains of this type are flexible in only one direction and are designed to intermesh with the teeth of a "sprocket" to transfer power from one shaft to another. Typically, the roller chain used in power transmission operates at "low speeds", i.e. from approximately 30 to 500 FPM (feet per minute) linear speed. There are some "high speed" chains that are used for specific purposes, such as timing chains on automobiles, and high-performance motorcycle drive chains. The roller chain may be configured in "multiple" strands. A roller chain can be purchased in single, double, triple, quadruple, and higher. A single chain has one strand, a double has two strands, a triple has three strands, and so on.

Click the links below to open the associated topic detail page.

And when you're ready, give us a call to discuss your needs. We're here to help!

Roller Chains

Description: Roller chain is available in multi-strand designs as well as different materials, depending on the application. Click the picture to be taken to the main Roller Chain page for additional details.



Description: Sprockets are available for a multi-strand chain and in various materials, depending on the application. Click the picture to be taken to the main Sprocket page for additional details.