Clarifier Drive Assemblies

Drive assemblies in standard configurations are proven, long-duration units that have a history of performing non-stop for over 40 years. All McNish gears are USA manufactured, tested and certified in our own fabrication facility.

A large industrial water treatment or storage tank with a mechanical arm or mixer inside, made of metal, partially submerged in water.

Bridge Supported

McNish Worm Gear Drives for bridge supported collectors are ANSI/AGMA rated gear assemblies with minimum AGMA Tolerance grade 10. They consist of a single piece alloy steel worm and worm shaft matched to a centrifugally cast manganese bronze worm gear and housed in a precisely machined high grade cast iron housing. These drives are simple, rugged and require minimal maintenance. Output torque is rated for continuous 20-year life, at full load.

Aerial view of a circular water treatment facility with green water sections separated by blue metal structures and a central yellow area, surrounded by green grass.

Pier Supported

McNish Spur Gear Drives are ANSI/AGMA gear assemblies with minimum Quality Number of Q6 on internal spur gear and Q8 on pinion gear and minimum Transmission Accuracy Level of AV11 on internal spur gear and AV9 on pinion gear (after heat treatment). They include a split internal spur gear ting that allows access to replaceable bearing race inserts. Housings are machined from cast iron to provide stability, the highest level of precision and superior corrosion resistance. Output torque is rated for continuous 20-year life. The drive design and torque ratings are in full conformance with and certified to the latest ANSI/AGMA standards.

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