A wastewater treatment plant with cylindrical tanks, metal pipes, and railings hosts a person in protective gear managing the industrial equipment.

Polychem® 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 collector chain.

an image showing a close up of a sprocket for PolyChem Systems
Features
Split design allows use of both sides of sprocket teeth
Not susceptible to rust
High-strength Cast Nylon 6 material
Navigate Within Polychem® Systems

Sprockets Products

A black, circular sprocket with evenly spaced teeth along its edge. The center of the sprocket features a square-shaped mounting hole and additional structural elements for attachment to a head shaft.
Collector Head Shaft Sprocket
A metal sprocket with evenly spaced teeth along its outer edge, a circular hole in the center, and additional squared and rectangular cutouts surrounding the hole.
Idler Collector Sprocket
A close-up view of a black mechanical gear component with a circular, cogged edge
Driven Sprocket

Specifications

Sprocket TypeNumber Of TeethPitch Diameter
inches		Average Weight
lbs		Max. Keyed Bore
inches		Min. Rockwell HardnessMin. Tensile Strength PsiStandard HardwareStandard Ltb
inches
NCS-720-S Collector Sprocket
25T
24.10
35
5.75
R115
10,000
316SS
5.25
NCS-720-S Collector Sprocket
23T
22.21
28
5.75
R115
10,000
316SS
5.25
NCS-720-S Collector Sprocket
19T
18.45
19
5.75
R115
10,000
316SS
5.25
NCS-720-S Collector Sprocket
17T
16.59
14
5.75
R115
10,000
316SS
5.25
NCS-720-S Collector Sprocket
13T
12.89
15
5.75
R115
10,000
316SS
5.25
NH-78 Bull Gear Sprocket
40T
33.25
85
5.75
R115
10,000
316SS
5.25
NH-78 Shear Pin Hub Sprocket
11T
9.26
21
2.5
R115
10,000
316SS
2.5
Specifications table not found.
A close-up view of industrial machinery with cogwheels, head shafts, and a chain, all shown in a blue-tinted color scheme.
System Animation

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

Watch Video

Articles & Literature

a close up showing the teeth of a sprocket
Not All Sprockets Are the Same
In rectangular clarifiers, straight-line sludge collector mechanisms have in-tank sprocket gears that are mounted on shafting to transmit torque from the drive unit and help keep the chain and flight system […]
Read Article
Literature
Polychem Chain & Flight Brochure Polychem Field Services

Water & Wastewater Treatment Products

an image showing three head shafts
Head Shafts
Two dark steel chamfer-style weights with cylindrical tops and wider, tapering bases resemble stub shafts. The weights are uniform in color with a smooth, matte surface finish.
Stub Shafts
Close-up view of multiple metal channel sections, displayed in varying angles. The channels, likely made of steel or aluminum, exhibit smooth, reflective surfaces and sharp, clean edges
Flights
an image of a close up featuring an overview of a collector chain
Collector Chain
A blue motorized mechanical device, known as a drive unit assembly, is mounted on a concrete surface with bolts. It connects to a chain and sprocket system adjacent to a metal frame.
Drive Unit Assembly
A close-up of water flowing over a weir at a wastewater treatment plant. The image shows sediment and debris, part of the scum removal process, on the water surface as it moves over a red and brown barrier before falling into a lower section. The structure is surrounded by concrete.
Scum Removal
A shield emblem with the letters "SG" is at the center of the image. "SMARTGUARD" stands out in large, bold letters, while "COLLECTOR MONITORING SYSTEM" appears in smaller text beneath it. The background features a wavy, abstract pattern in dark and light shades.
SmartGuard®
A worker wearing a high-visibility vest and a hard hat is standing in an industrial setting, using a tape measure to gauge a section of a large pipe.
Field Services
Abstract image featuring a minimalist design of white and light gray geometric shapes. The background has a subtle gradient, creating a clean and modern aesthetic.
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From the planning stage, to the manufacturing process, and through post-completion support—the experts at Brentwood are with you every step of the way. Complete the form below for more information about our Water & Wastewater treatment solutions.













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