It All Began With a Boring Bar
The year was 1923 and the automobile was just starting to become common. Paved roads, even in the big cities, were still rare, and the rough and rutted conditions were tough on those early cars, and engine troubles were common. Engine repair was a fast-growing business, but a lot of repairs, especially heavy machine work like boring cylinder was difficult, time-consuming, and error prone.
Enter a man named Clarence T. Rottler and his machine, the Rottler Boring Bar. Not only did the machine reduce the hard work of boring, but it was also extremely accurate and fast compared to the old manual methods. The Rottler Boring Bar revolutionized automotive engine repair and by the end of the Roaring 20s was standard equipment in thousands of machine shops and engine repair facilities across the continent.
Fast forward 100 years and Rottler is now one of the world’s leading manufacturers of engine building machines with nine different lines of precision machining solutions for everything from the motor in the family stations wagon, to the monster engines in locomotives, mining equipment, and marine vessels
Select an engine industry solution to learn more
Engine & Machine Shops
Whether you’re a one-man jobber shop or regional re-build center, Rottler offers a wide variety of machines and equipment to help production auto and truck gas and diesel engine shops get work done faster, better, and more cost-efficiently than ever before.
From our EM79 multi-purpose CNC machining center, to hones, seat & guide machines, and valve refacers, Rottler delivers a suite of easy-to-use machining solutions that will give you 3x – 4x the job capacity without new hires or blowing your budget.
Performance Engine
The world’s leading performance and racing engine builders rely on Rottler machines to give their engines the winning edge.
Circle, dirt, dragstrip, street, track, and everything and everywhere in-between, you can be sure that if they’re crossing the finish line first, Rottler equipment helped them get there.
Whether it’s the F69A – the Swiss Army Knife of automatic machining centers, our H80 Series CNC-powered vertical hones, the S series automatic surfacers, or any of our other high-precision Rottler engine machining solutions, you can be certain that with these machines you’re going to get winning results every time.
Heavy Duty & High Horsepower Diesel
Locomotives, marine, mining, oil & gas, power generation – these behemoth engines perform some of the most demanding work in some of the most demanding environments on Earth. That’s why the world’s leading re-builders and remanufacturers of heavy duty and high horsepower diesel engines rely on Rottler equipment to get the job done right, on time, and under budget.
Rottler developed the EM100 line of CNC machine solutions specifically for these massive engines. Capable of handling blocks up to 20,000 lbs (10,000 kg), these fully-automated machines offer a full suite of functions including boring, surfacing, line boring — even V block auto-rotation – in traveling column CNC machinery capable of handling the biggest of the big diesels.
Whether it’s CAT, Cummins, EMD, Detroit, Komatsu, Mercedes, MTU, or Waukesha, there’s a member of the Rottler EM100 family that will handle it.
