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Sprocket Designer

Define the tooth geometry and pitch; the approximate outer diameter only selects the nearest practical tooth count. The plan view shows the tooth profile; the 3D view shows the sprocket extruded to its axial depth, including the center hole and mounting boss.

Parameters (mm)

PitchLinear distance from one tooth center to the next.

Tooth DepthTotal radial distance from tooth root to tooth tip.

Tooth Tip Width

Tooth Base Width

Pressure AngleSets the straight tooth flank angle and calculates the base width. Select Custom to enter the base width manually.

Approx. Outer DiameterUsed to choose the nearest whole tooth count after preserving pitch.

Sprocket DepthAxial thickness of the sprocket, shown in the 3D view.

Hole DiameterDiameter of the center through-hole.

Boss DiameterOuter diameter of the center mounting boss.

Boss Extra DepthHow far the boss projects beyond the sprocket depth.

Rounded Tooth Corners Straight (unchecked) or rounded (checked) tip and base corners.

View

Tooth count-

Pressure angle-

Root diameter-

Exact outer diameter-

Hole diameter10.000 mm

Boss diameter30.000 mm

Boss extra depth20.000 mm

Calculation: tooth count = whole tooth count whose pitch / sin(pi / tooth count) is nearest to the approximate OD. Tooth depth is cut inward from the outer diameter so the distance between consecutive tooth center lines stays equal to the pitch. A selected pressure angle calculates base width from tip width + 2 × tooth depth × tan(pressure angle); Custom uses the entered base width. The 3D view extrudes the profile by the sprocket depth. The boss projects the extra depth beyond the sprocket depth for a mounting screw to a sensor axis.