What is a QD Bushing?

QD stands for Quick Detachable and a QD bushing features a flange that connects the bushing (quickly!) to the sprocket. They also have a taper – usually 4 degrees, half that of a taper-lock bushing – that, along with the cap screws, provides a closer fit. How to Install a QD Bushing Installing a QD bushing […]

How Do I Know What Size Sprocket I Need?

Chain size, type, number of teeth, and bore size are all you need to select the correct roller chain sprocket. When you look at sprockets on a product page or catalog, you’ll see a string of numbers and letters. Let’s break one down. #50BB15x1/2” is one of the seventeen idler roller chain sprockets currently available […]

What is a Pillow Block Bearing Used For?

Pillow block bearings support shafts that run parallel to the mounting surface. This makes them a very simple but vital part of conveyor systems, industrial fans, farm equipment, jib cranes, car washes, and much more. With that much at stake, let’s make sure you get the right one and use it the right way. Split […]

V-Belt Size Chart

V-Belts come in many sizes and lengths. Here at MDS, we offer A, B, 3VX, and 5VX belts. Click the lengths to see our full selection of that type of belt or for that specific length. V-Belt Dimensions V-Belt Type Top Width Height Angle A 1/2″ 5/16″ 40° B 5/8″ 13/32″ 40° 3VX 3/8″ 21/64″ […]

Roller Chain Size Chart

A poor-fitting roller chain can result in inefficiency, damage to your machine, and lost hours in repair time. Make sure you select the chain with the best fit by referencing the size charts below. Click the link on the chain size you need to see our selection, which often includes multiple lengths, connecting links, and […]

How Do I Choose the Right V-Belt?

V-belts, in combination with grooved sheaves, provide excellent power transmission without the slippage that was common with their predecessor, the flat belt drive. Design and materials have come a long way since those days, but in order to get the most life and efficiency out of v-belts, it is vital to choose the correct size […]

How Do I Measure Roller Chain?

With the multitude of applications for industrial roller chain, its no surprise that it is available in many types, shapes, and sizes. Here at MDS, we offer double pitch, double strand, single strand, stainless steel, and heavy roller chain. First, lets clarify what you’re looking for. If you know the chain size but are unsure […]