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Original photograph of the Lucznik 451 4 mm cam gearView full image

Original, unedited photograph. Open the image to see it in full.

Original photograph of the Lucznik 451 4 mm cam gearCaliper photograph showing 54.9 mm across the pictured outer contact pointsCaliper photograph showing 4.0 mm across the pictured width contact pointsOriginal photograph of the Lucznik 451 6 mm cam gear6 mm gear caliper photograph showing 55.3 mm across pictured outer contact points6 mm gear caliper photograph showing 6.0 mm across pictured width contact points
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Original photograph of the Lucznik 451 4 mm cam gear
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Sewing machine parts

Lucznik 451 Cam Gear - 4 mm or 6 mm

4 mm or 6 mm cam gear for Lucznik 451 sewing machines. Choose the width that matches your original and compare the photographs.

$29.99 USD

Made to order · Ships within 3 calendar days from California · Free USPS standard shipping within the US

Models and part matching

Lucznik 451
Match your part
Choose 4 mm or 6 mm gear width. The pictured samples measure 54.9 mm and 55.3 mm across the shown outer contacts, and 4.0 mm and 6.0 mm across the shown widths. These are sample readings, not guaranteed tolerances.

Product details

This independently produced ABS ring gear is intended for the Lucznik 451 sewing machine cam mechanism. Compare the angled teeth, large opening and ring width with your original component.

Choose either the 4 mm or 6 mm version. Retain the existing cam and mounting parts. Installation and machine timing may require professional service.

What is included

One 3D printed ABS gear in the selected width. Sewing machine, cam assembly, mounting hardware, tools and installation service are not included.

Part details

Independent replacement part from Jams Engineering. Brand names identify equipment compatibility.

Material: ABS
Part reference: JE-LUCZNIK-451-CAM-GEAR-4MM

Installation & compatibility

Disconnect the equipment from power and follow the manufacturer's service instructions. Keep the original mounting hardware and check that the replacement moves freely after fitting.

Send your model and original-part photos for help

Shipping & returns

US orders ship free by USPS standard shipping from California. Read shipping and return information.

Sewing machine parts