Overview

Stub Shafts

Overview

Polychem idler stub shafts are the lightweight alternative to traditional full-width steel shafting and cast iron wall bearings. We offer two base diameters and lengths to accommodate sprocket centerlines from 9 to 29 inches off the wall, allowing customized stub shafts to fit various tank sizes, system loadings, and existing structural conditions.

Features

  • Engineered to maintain strength & minimize deflection

  • Laterally adjustable up to 2 inches in the field

  • High-strength Cast Nylon 6 material

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Industrial Chain & Flight System
Specifications

Specifications

Complementary Components

Complementary Components

Retainer Plate

Sprockets can be secured to the stub shaft with a single bolt using the polycarbonate retainer plate.

Bearings

The water-lubricated UHMW-PE tubular bearings spin on the spindle and are keyed to the outer end tubes to support the shaft. Oil-filled Nylon 6 bearings are available for specific cases where high temperatures and chemicals corrode UHMW-PE.

Hardware

hardware kit utilizes 316 SS leveling bolts to allow for proper alignment and adjustability in the field.

System Animation

System Animation

Learn how all the components in a standard Polychem system are assembled and installed.

Articles & Literature

Articles & Literature

Rectangular clarifier systems

Rectangular vs. Circular Clarifiers: Which is better?

Both rectangular and circular configurations have been commonly used in clarifier basins. The relative merits of the two have been discussed at length for decades. Historically, the selection of rectangular versus circular clarifiers has been based on past experience and…

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Literature

Related Products

Related Products

Chain and sprocket

Sprockets

Brentwood’s Polychem sprockets are molded from a specially selected, high-strength Nylon material that outwears and outlasts UHMW-PE and polyurethane sprocket alternatives. All sprockets are equipped with standard integral teeth to maintain tooth alignment and are designed for use with Polychem…

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720 chain

Collector Chain

Brentwood’s Polychem NCS-720-S Collector Chain is among the strongest 720-series chains on the market. Precision molded from durable, glass-reinforced polyester, this lightweight chain withstands high sludge loadings in corrosive environments. Our collector chain can also be protected with barrel wrap…

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Stub Shafts

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