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When your motion system demands low noise, corrosion resistance, and a reliable gear mesh without the weight penalty of metal, finding the right plastic pinion can be frustrating. Makers, robotics builders, and 3D-printer engineers who need a dimensionally consistent Module 1 spur gear with a stepped bore will find this 26-tooth blue nylon gear a dependable drop-in solution.
Each gear is machined from engineering-grade blue nylon (PA66 or equivalent), offering a self-lubricating surface and good impact resistance. The gear features a Module 1 tooth profile with 26 teeth, an outer diameter of approximately 28 mm (1.10 in), and a face width of typically 10–15 mm (0.39–0.59 in). The stepped bore accommodates shaft diameters from 5 mm to 12 mm (0.20–0.47 in), selectable by variant.
Typical use cases include desktop CNC router axis drives, small robotic arm joints requiring quiet operation, 3D printer extruder or Z-axis pinion replacement, and light-duty conveyor or indexing mechanisms where a plastic spur gear for stepper motor shafts is preferred over metal.
Made from PA66-class nylon for a balance of strength, flexibility, and self-lubrication — reducing the need for external grease in light-load applications.
Plastic-on-metal or plastic-on-plastic gear pairing significantly reduces operational noise compared to all-metal drives — ideal for desktop machines and indoor robotics.
Standard M1 involute tooth geometry ensures accurate meshing with any compatible M1 rack or gear. 26 teeth deliver a practical gear ratio range for most small-motor drive trains.
The stepped bore design accommodates shaft diameters from 5 mm to 12 mm (0.20–0.47 in). Select your required bore size from the variant options above.
Nylon is inherently resistant to moisture, mild chemicals, and oxidation — making these gears suitable for humid workshop environments where metal gears may corrode.
Available in 1, 2, 5, or 10-piece packs to match your project scale — from single prototype builds to small production runs or spare-parts stocking.
| Module | 1 (M1) |
|---|---|
| Number of Teeth | 26 |
| Outer Diameter | Approx. 28 mm (1.10 in) |
| Pitch Diameter | 26 mm (1.02 in) |
| Face Width | Typically 10–15 mm (0.39–0.59 in) |
| Bore Diameter | 5 / 6 / 6.35 / 7 / 8 / 10 / 12 mm — See variant options |
| Bore Style | Stepped bore (no keyway) |
| Material | Engineering nylon (PA66-class) |
| Color | Blue |
| Pressure Angle | 20° |
| Tooth Profile | Involute spur |
| Hub Diameter | See variant options |
| Weight (per piece) | See variant options |
| Pack Quantity | 1 / 2 / 5 / 10 PCS — See variant options |
Measure your motor or drive shaft diameter with a caliper. Select the matching bore variant: 5 mm, 6 mm, 6.35 mm (1/4 in), 7 mm, 8 mm, 10 mm, or 12 mm. The stepped bore is designed for a snug fit — if your shaft falls between sizes, choose the next size down and consult a machinist for light reaming.
Module 1 nylon gears are suited for light-to-moderate torque applications — typically up to a few Newton-meters depending on speed and temperature. They are well-matched to small stepper motors (NEMA 17/23 class) and DC gearmotors in robotics, 3D printers, and desktop CNC machines. For heavy industrial loads, a metal gear is recommended.
Yes. Engineering nylon (PA66) resists moisture, mild acids, and oxidation far better than steel or aluminum. It is suitable for humid workshop environments and light outdoor enclosures. Prolonged UV exposure or immersion in strong solvents should be avoided.
Yes — this gear uses a standard Module 1 involute tooth profile with a 20° pressure angle, which is compatible with any M1-standard rack, pinion, or mating spur gear regardless of material (metal or plastic). Confirm the mating component is also rated M1 before ordering.
Nylon is self-lubricating under light loads, so no grease is strictly required for typical DIY and robotics applications. For higher-speed or higher-load use, a small amount of dry PTFE lubricant or light machine oil on the tooth flanks can extend service life and reduce wear.
Choose 1 PCS for a single prototype or replacement. Select 2 PCS if your design uses a gear pair. The 5 PCS and 10 PCS packs offer better per-unit value for small production runs, classroom projects, or keeping spares on hand for ongoing builds.
The stepped bore does not include a keyway or pre-drilled set-screw hole. For positive shaft retention, you can carefully drill and tap a radial set-screw hole through the hub using standard M3 or M4 hardware. Alternatively, use a shaft collar alongside the gear for axial positioning.
