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When your build demands a quiet, corrosion-resistant gear that won't add unnecessary mass, standard metal pinions often fall short. Engineers, hobbyists, and makers working on robotics platforms, desktop CNC machines, and 3D printer extruder drives need a module 1 blue nylon spur gear that delivers consistent mesh accuracy without the noise or weight penalty of steel. These gears are engineered for exactly that use case.
Each gear is machined from engineering-grade blue nylon (PA66), offering a self-lubricating surface and inherent vibration damping. The range covers 16 to 50 teeth (1 Mod) with stepped bore options from 4 mm (0.16 in) to 20 mm (0.79 in), making them compatible with a wide variety of motor shafts and drive axles. The stepped hub design allows secure shaft retention without additional collars in many configurations.
Typical applications include: lightweight robotic arm joints requiring low-noise 1 mod gear mesh, 3D printer filament drive and extruder pinion gear replacements, and DIY conveyor or automation systems where a corrosion-resistant nylon motor gear with step hub is preferred over metal alternatives.
Machined from PA66 nylon for a self-lubricating, low-friction tooth surface that reduces wear on mating gears and eliminates the need for frequent re-lubrication in light-duty drives.
Nylon-to-metal or nylon-to-nylon mesh significantly dampens gear noise compared to all-metal gear trains — ideal for desktop robotics, printers, and enclosed automation enclosures.
Available in 16 to 50 teeth and bore diameters from 4 mm to 20 mm (including 6.35 mm / ¼ in for imperial shafts), covering the most common motor shaft sizes in one product family.
The integrated step on the hub provides a positive axial stop for shaft positioning, simplifying assembly and improving repeatability in multi-gear drive trains.
Nylon construction resists moisture, mild acids, and common lubricants — suitable for light-duty environments where metal gears would corrode or require protective coatings.
Significantly lighter than equivalent steel or brass spur gears, reducing rotational inertia and motor load — a measurable advantage in battery-powered robotics and portable automation builds.
| Module | 1 (Mod 1) |
|---|---|
| Tooth Count Range | 16T – 50T |
| Bore Diameter Range | 4 mm – 20 mm (0.16 in – 0.79 in) |
| Available Bore Sizes | 4, 5, 6, 6.35, 7, 8, 10, 12, 14, 15, 16, 17, 18, 19, 20 mm |
| Material | Engineering Nylon (PA66) |
| Color | Blue |
| Hub Style | Stepped hub |
| Pressure Angle | 20° |
| Pitch Diameter | See variant options (= Module × Teeth) |
| Outside Diameter | See variant options |
| Face Width | See variant options |
| Weight (per piece) | See variant options |
| Quantity | 1 Pcs per order (multi-pack options available) |
The gear ratio between two meshing spur gears equals the ratio of their tooth counts. For example, pairing a 16T pinion with a 32T gear gives a 2:1 reduction. Select your tooth count based on the speed reduction or torque multiplication your drive system requires. All gears in this listing are Module 1, so any two teeth counts from this range will mesh correctly with each other or with any other M1 gear.
Measure your motor or drive shaft diameter precisely with calipers before ordering. Available bores include 4, 5, 6, 6.35 (¼ in), 7, 8, 10, 12, 14, 15, 16, 17, 18, 19, and 20 mm. The 6.35 mm bore is designed for standard ¼-inch imperial shafts common in North American hobby motors. If your shaft diameter falls between listed sizes, a bore that is slightly larger than the shaft is not recommended — select the matching size and use a set screw or keyway for retention.
PA66 nylon gears are well-suited for light-to-medium duty applications such as robotics, 3D printers, and small automation systems. They are not recommended for high-torque, high-temperature, or heavy industrial drives where steel or brass gears are the appropriate choice. Nylon gears offer the advantage of running quietly and without lubrication in many applications, and they act as a sacrificial element that protects more expensive components in overload situations.
Yes. PA66 nylon is inherently resistant to moisture, mild acids, and most common lubricants, making these gears suitable for environments where metal gears would corrode. They are not suitable for prolonged exposure to strong acids, ketones, or temperatures above approximately 100–120 °C (212–248 °F). For outdoor or wet environments, nylon is a practical alternative to uncoated steel gears.
Yes — all gears in this listing follow the standard Module 1 (M1) tooth profile with a 20° pressure angle, which is the most common metric gear standard. They will mesh correctly with any M1 metal spur gear, M1 nylon gear, or M1 rack from any manufacturer. Confirm that the mating gear is also Module 1 before ordering; mixing modules (e.g., M1 with M1.5) will result in incorrect mesh and rapid wear.
The stepped hub provides a built-in axial shoulder that positions the gear at a fixed depth on the shaft, which simplifies assembly and improves repeatability when replacing gears. Whether you need a set screw depends on your torque level and shaft type. For light-duty applications with a snug bore fit, the step alone may be sufficient. For higher torques or reversing loads, a set screw, keyway, or adhesive retainer is recommended to prevent slippage. Contact us to confirm set screw hole availability for specific variants.
Yes — Module 1 nylon pinion gears are commonly used in 3D printer extruder drives, filament feed mechanisms, and axis drive systems. The low-noise and self-lubricating properties of PA66 nylon make them a practical choice for desktop FDM printers. Verify the bore matches your extruder motor shaft (typically 5 mm for NEMA 17 motors) and that the tooth count matches your existing drive gear ratio before ordering.
