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NorAm’s 6:1 Reduction 
Gearbox for one inch crankshaft engines

Cotta speed reducers match engine speed to driven equipment speed allowing both the engine and load to operate at peak efficiency. These compact and heavy duty gearboxes are designed for use with the commercial offerings of major engine manufacturers.

Cotta engine mounted speed reducers are available with SAE flywheel housings from #5 to #00, ratios to 8, and horsepower capacity to 2200. Above 2200 HP, remote mount models are generally used.

Flywheel connection options include over center clutches, air clutches, drive plates and torsional couplings. Independent mount units are also available. Cotta speed degreasers are easily modified to meet special application needs.

Typical applications are, pumps, generators, rock crushers, compressors, mud pumps, blenders, and wood chippers. Some speed reducers have side load capability for belt driven applications.

Many pre-designed special purpose speed decreasers are available. If our catalog offerings do not meet your needs, please ask a Cotta Sales Engineer about a modified standard or custom speed reducer

Our gearboxes are built to withstand the most rigorous applications on the planet. Their modular design features cast iron housings, shaved helical gears and case hardened shafts. Twin Disc gearboxes are available with reduction and increaser gear ratios on outputs, along with output rotation options.