3D preview of Roller Chain Sprocket 18T (ANSI 40)
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Interactive 3D model of Roller Chain Sprocket 18T (ANSI 40)

Gears and transmission

Roller Chain Sprocket 18T (ANSI 40)

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Bounding box
79.6 × 79.0 × 20.0 mm
Engine
Precision B-rep
Parameters
12
Published
October 24, 2026

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The prompt

design a sprocket

Parameters

NameValueRange
Number of Teeth18 count9 – 60
Chain Pitch12.7 mm6 – 25.4
Roller Diameter7.92 mm3 – 15
Roller Seat Radius Factor0.6 ratio0.5 – 0.7
Tooth Tip Width Factor0.72 ratio0.5 – 0.9
Toothed Plate Thickness7 mm3 – 20
Hub/Plate Fillet Radius1.5 mm0 – 3
Hub Diameter34 mm15 – 70
Hub Length20 mm5 – 50
Bore Diameter12 mm5 – 30
Keyway Width4 mm2 – 10
Keyway Depth1.8 mm0.5 – 4

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.

Roller Chain Sprocket 18T (ANSI 40) - Free CAD Model (STEP, STL) | TextoCAD