Cogmatic, Inc.

An internal gear has teeth machined into the inside diameter instead of the outside diameter. When you require large internal gears, Cogmatic provides flame machined tooth profiles that deliver a cleaner, smoother engagement within your gear drive system. Due to the smooth finish and crisp, precision profiles of our flame-machined internal gears, you’ll get increased longevity.

Crawler Sprockets for heavy-duty industrial applications require rugged materials and construction. Flame machining these large crawler sprockets ensures accurate tooth profiles to engage and drive their massive crawler tracks.

At Cogmatic, we’re a team of specialists when it comes to fabricating custom large sprockets. Our flame machining equipment will accommodate diameters up to 18 feet (18′). Even if a large sprocket is split into segments for ease of transport and assembly, we machine the full round part to ensure accurate tooth spacing.

Large gears show up in some of the worst physical places. Extra large gears are essential to mix concrete, dig tunnels, adjust cone crushers, and adjust turntables. For over 60 years, we’ve been custom manufacturing large gears for customers across many industries – from mining to batch processing. Whatever your needs or application, Cogmatic’s Flame Machining Technology will custom build a gear that helps you get the job done and done right.

Segmented Gears for Ease of Transportation or Installation In most cases, customers needing any size of gear would prefer not to split the gear. Since every tooth is in contact with the pinion, tooth spacing is critical for smooth running and reduced wear. However, there are times when just getting a huge gear where it needs to be installed presents companies with transportation or installation problems. In those cases, the solution may be to split the gear. To preserve the tooth-to-tooth spacing and alignment, the re-assembly method is critical to the performance of the gear.

Cogmatic’s large engineering class sprockets are available in all class chain types (A, B and C). Just like the large customized crawler sprockets that we manufacture, your engineering class sprockets can be induction case-hardened or through-hardened. These heavy duty sprockets can be a single piece or segmented.