{"id":1119,"date":"2026-04-23T03:10:08","date_gmt":"2026-04-23T03:10:08","guid":{"rendered":"https:\/\/worm-and-worm-wheel.com\/?post_type=product&p=1119"},"modified":"2026-04-23T03:10:08","modified_gmt":"2026-04-23T03:10:08","slug":"plastic-worm-gears-for-micro-drives-pom-nylon-gear-sets","status":"publish","type":"product","link":"https:\/\/worm-and-worm-wheel.com\/pt\/produto\/plastic-worm-gears-for-micro-drives-pom-nylon-gear-sets\/","title":{"rendered":"Plastic Worm Gears for Micro Drives | POM & Nylon Gear Sets"},"content":{"rendered":"
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Product Overview of Micro Plastic Worm Gears<\/h2>\n

Ever-Power supplies engineered plastic sem-fim e roda sem-fim<\/strong> components sized for the quiet, low-torque drives that power consumer electronics, automotive comfort systems, and compact medical equipment. Our Korean customers mostly use these gears as direct replacements for Mabuchi, Nidec and Mitsumi proprietary parts, matching shaft diameter, tooth count and centre distance down to the hundredth of a millimetre, so the original motor brackets do not need to be re-tooled.<\/p>\n

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The core lineup covers Module 0.2 through Module 2.0 in POM (Polyacetal) and PA66 nylon, with bore diameters from \u00d81.40 mm and lengths as short as 6 mm. A typical 30-tooth M0.4 worm wheel mated with a single-start RH worm weighs under 1 gram, which keeps rotor inertia low in stepper and BLDC applications. Typical industries include IP security cameras, automotive rear-view mirror adjusters, fax and multi-function printers, medical infusion pumps, and precision laboratory instruments.<\/p>\n<\/section>\n

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Technical Specifications and Variant Data<\/h2>\n

The table below lists the baseline dimensional envelope shared by the plastic worm family. Tooling is already cut for the listed bore and module ranges, which typically shortens the lead time for repeat orders to under three weeks. Bore and outer-diameter values marked flexible<\/em> can be honed to a customer print during finishing.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nEspecifica\u00e7\u00e3o<\/th>\n<\/tr>\n<\/thead>\n
Tipo<\/strong><\/td>\nWorm (single start \/ multi-start on request)<\/td>\n<\/tr>\n
M\u00f3dulo<\/strong><\/td>\nM0.2 \u2013 M2.0<\/td>\n<\/tr>\n
Material<\/strong><\/td>\nPolyacetal (POM) \/ Nylon (PA66)<\/td>\n<\/tr>\n
Bore<\/strong><\/td>\n\u00d81.40 mm \/ \u00d81.90 mm<\/td>\n<\/tr>\n
Outer Diameter<\/strong><\/td>\n\u00d84.0 mm \/ \u00d85.0 mm \/ \u00d86.0 mm (flexible)<\/td>\n<\/tr>\n
Comprimento<\/strong><\/td>\n6.0 mm \/ 8.5 mm \/ 10.0 mm (flexible)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Below are three production references currently running on our moulding floor. Each row shows a typical gear train paired with its plastic worm, with the application confirmed by end users. Note how a change in rotation hand (RH vs LH) or pitch cone is usually all that separates one camera model from another.<\/p>\n

\n\n\n\n\n\n\n\n\n\n
Item<\/th>\nM0.4\u00d730T Gear + Worm<\/th>\nM0.4 RH Worm<\/th>\nGear Screw & Screw Nut<\/th>\n<\/tr>\n<\/thead>\n
Material<\/strong><\/td>\nTEPCON_M90-10<\/td>\nTEPCON_M90-10<\/td>\nODM<\/td>\n<\/tr>\n
M\u00f3dulo<\/strong><\/td>\nM0.4<\/td>\nM0.4<\/td>\nODM<\/td>\n<\/tr>\n
No. of Teeth<\/strong><\/td>\n30T \/ 1T<\/td>\n1T (RH)<\/td>\nODM<\/td>\n<\/tr>\n
Peso<\/strong><\/td>\n0.75 g \/ pc<\/td>\n0.22 g \/ pc<\/td>\nODM<\/td>\n<\/tr>\n
Aplicativo<\/strong><\/td>\nIP Camera, CCTV monitor<\/td>\nAutomotive rear-view mirror<\/td>\nLead-screw linear actuator<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n
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How the Worm Drive Works in Micro Applications<\/h2>\n

A plastic engrenagem sem-fim<\/strong> converts rotary motion from a small DC or stepper motor into a high-reduction output that is both quiet and self-locking. The worm \u2014 a single- or multi-start thread cut onto a shaft \u2014 meshes with the worm wheel at right angles. Because the teeth slide rather than roll, contact is continuous and the drive produces less than 35 dB of noise at 3 000 rpm in a typical camera pan-tilt head, which is below the ambient noise of most server rooms.<\/p>\n

\"worm<\/p>\n

When the worm has only one thread start and the lead angle is shallower than the coefficient of friction between the POM and nylon faces, the assembly is naturally self-locking. The motor can drive the load, but back-driving from the load side is impossible. For surveillance gimbals or mirror folding mechanisms this is exactly the behaviour the designer wants \u2014 the tilt angle stays put when power is removed, with no brake or encoder holding torque required.<\/p>\n<\/section>\n

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Materials, Moulding and Post-Process Options<\/h2>\n

POM (Polyacetal) is the first-choice resin for more than eight out of ten plastic worm assemblies we ship. It has a low coefficient of friction against steel shafts, dimensional stability within \u00b10.02 mm over a \u221230 \u00b0C to +90 \u00b0C service window, and enough crystallinity to resist creep under continuous low-duty loads. PA66 nylon is specified when the drive runs damp, greasy, or at slightly higher torque, because its toughness and impact resistance are better at the cost of a 0.3 % water-absorption swell that has to be accounted for in the tooth backlash.<\/p>\n

\"Worms<\/p>\n