{"id":1135,"date":"2026-04-24T01:50:32","date_gmt":"2026-04-24T01:50:32","guid":{"rendered":"https:\/\/worm-and-worm-wheel.com\/?post_type=product&p=1135"},"modified":"2026-04-24T01:51:19","modified_gmt":"2026-04-24T01:51:19","slug":"brass-worm-wheel-shaft-set-20-tooth-m0-5-micro-gear-kit","status":"publish","type":"product","link":"https:\/\/worm-and-worm-wheel.com\/it\/prodotto\/brass-worm-wheel-shaft-set-20-tooth-m0-5-micro-gear-kit\/","title":{"rendered":"Set di ruota e albero a vite senza fine in ottone | Kit di microingranaggi M0.5 a 20 denti"},"content":{"rendered":"
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Brass Worm Wheel Kit at a Glance<\/h2>\n

Ever-Power’s brass ruota a vite senza fine<\/strong> kit is a matched pair \u2014 one precision-cut brass wheel and one single-start brass shaft \u2014 designed as a drop-in component for small electro-mechanical drives where quiet running, moderate load and long service life all matter. The 20-tooth, M0.5 module wheel weighs only 16 grams yet delivers a single-stage reduction ratio that can reach 80:1 when paired with our catalogue worm shafts, a range that saves two or three reduction stages compared with a spur-gear chain.<\/p>\n

\"Set<\/p>\n

Because brass is corrosion-resistant and self-lubricating against a steel counterpart, Korean customers specify this ingranaggio a vite senza fine in ottone<\/strong> kit for valve actuators, timing mechanisms, scientific instruments, small textile machines and automated retail equipment. Direct-replacement dimensions make the worm and worm wheel assembly compatible with legacy Mitsumi, Nidec and local OEM fittings \u2014 match bore, centre distance and tooth count, then bolt it in without redesigning the host frame.<\/p>\n

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Specifiche tecniche<\/h2>\n

The tables below list every dimension a design engineer needs to validate the fit before placing an order. Values come straight from our shop drawing and are verified on every batch through CMM sampling.<\/p>\n

\n\n\n\n\n\n\n\n\n
General Specifications<\/th>\n<\/tr>\n<\/thead>\n
Materiale<\/strong><\/td>\nBrass (C3604 \/ H59 standard)<\/td>\n<\/tr>\n
Colour<\/strong><\/td>\nNatural yellow<\/td>\n<\/tr>\n
Modulus<\/strong><\/td>\nM0.5<\/td>\n<\/tr>\n
Weight (wheel)<\/strong><\/td>\n16 g<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n
Size of the Worm Wheel<\/th>\n<\/tr>\n<\/thead>\n
Denti<\/strong><\/td>\n20<\/td>\n<\/tr>\n
Teeth Diameter<\/strong><\/td>\n11.2 mm<\/td>\n<\/tr>\n
Height<\/strong><\/td>\n12 mm \/ 0.47 inch<\/td>\n<\/tr>\n
Outer Diameter<\/strong><\/td>\n11 mm \/ 0.43 inch<\/td>\n<\/tr>\n
Hole Diameter<\/strong><\/td>\n4 mm \/ 0.16 inch<\/td>\n<\/tr>\n
Step Size<\/strong><\/td>\n9 \u00d7 7 mm \/ 0.35 \u00d7 0.27 inch (Dia \u00d7 H)<\/td>\n<\/tr>\n
Overall Size<\/strong><\/td>\n12 \u00d7 11 \u00d7 4 mm (H \u00d7 OD \u00d7 ID)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n
Size of the Worm Gear Shaft<\/th>\n<\/tr>\n<\/thead>\n
Height<\/strong><\/td>\n20 mm \/ 0.79 inch<\/td>\n<\/tr>\n
Outer Diameter<\/strong><\/td>\n9.8 mm \/ 0.39 inch<\/td>\n<\/tr>\n
Inner Diameter<\/strong><\/td>\n3.17 mm \/ 0.12 inch<\/td>\n<\/tr>\n
Overall Size<\/strong><\/td>\n20 \u00d7 9.8 \u00d7 3.17 mm (H \u00d7 OD \u00d7 ID)<\/td>\n<\/tr>\n
Thread Starts (Z1)<\/strong><\/td>\n1 (single-start, self-locking geometry)<\/td>\n<\/tr>\n
Typical Transmission Ratio<\/strong><\/td>\ni = 10 \u2013 80 (typical range for Z1 = 1)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n
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Why Brass Is the Right Material for This Class of Drive<\/h2>\n

Brass occupies a practical middle ground between cast bronze and plastic in the worm gear material hierarchy. The brass worm wheel has roughly half the tensile strength of tin bronze yet costs about 35 % less, making it ideal for low-to-moderate torque worm drive applications where a plastic wheel would be too soft and a bronze worm wheel would be financial overkill. The natural lubricity between brass and a steel or brass worm shaft keeps friction losses modest across a 500 to 4 000 rpm input range.<\/p>\n

\"worm<\/p>\n

Because brass does not rust and can be run with minimal grease in clean indoor environments, the kit suits laboratory instruments, coin-handling modules, electric-curtain motors, and similar light-industrial products where regular maintenance access is limited. The 20-tooth wheel turns a full revolution for every 20 turns of the single-start worm shaft, producing a smooth 20:1 reduction that is difficult to achieve in one spur stage without a much larger footprint.<\/p>\n