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When your motion-control build demands a gear that won't corrode, seize, or add unnecessary mass, metal pinions often create more problems than they solve. Hobbyists, robotics builders, and small-machine designers who need a reliable 1 Mod 17-tooth spur gear will find this blue nylon stepped-bore pinion a practical, drop-in solution.
Each gear is machined from engineering-grade blue nylon (PA66 or equivalent), offering a good balance of rigidity and self-lubricating properties. The module is 1 (Mod 1), tooth count is 17T, and the stepped bore accommodates 4 mm, 5 mm, or 6 mm shafts — spanning roughly 0.157 in to 0.236 in. Overall gear diameter is typically 19 mm (≈ 0.75 in) with a face width in the range of 10–15 mm (≈ 0.39–0.59 in).
Typical use cases include: compact DC-motor gearboxes for robotics arms and wheeled platforms, extruder drive trains in FDM 3D printers requiring low-noise plastic-to-plastic meshing, and light-duty conveyor or indexing mechanisms where a 1 mod 17 tooth nylon pinion gear reduces system weight and eliminates the need for lubrication.
| Module (Mod) | 1 |
|---|---|
| Number of Teeth | 17T |
| Pitch Diameter | 17 mm (≈ 0.67 in) |
| Outside Diameter | Typically 19 mm (≈ 0.75 in) |
| Bore Diameter | 4 mm / 5 mm / 6 mm (stepped) |
| Face Width | See variant options |
| Pressure Angle | 20° |
| Material | Engineering Nylon (PA66 or equivalent) |
| Color | Blue |
| Gear Type | Spur Gear (Pinion) |
| Hub / Step | Yes — stepped bore hub included |
| Weight (per piece) | See variant options |
| Pack Quantity | 1 / 2 / 5 / 10 PCS |
Measure your motor or drive shaft diameter with calipers before ordering. The stepped bore accommodates 4 mm, 5 mm, and 6 mm shafts. If your shaft is between sizes, choose the next size down and ream or bore to fit — do not force a larger shaft into a smaller bore.
Yes. This gear follows the standard Mod 1 involute tooth profile with a 20° pressure angle, so it meshes correctly with any Mod 1 spur gear or rack regardless of material. Ensure center distance is set accurately for smooth, low-backlash operation.
Engineering nylon (PA66) has a tensile strength of approximately 70–85 MPa — sufficient for light-to-medium duty applications such as robotics, 3D printer extruders, and small conveyor drives. For high-torque or shock-load applications, a metal gear is recommended. Nylon excels where low noise, low weight, and corrosion resistance matter more than maximum load capacity.
No regular lubrication is required. Nylon is inherently self-lubricating, which makes it ideal for enclosed gearboxes or assemblies where re-greasing is inconvenient. If the gear runs against a metal counterpart at higher speeds, a light application of dry PTFE spray can further reduce wear.
Yes. Nylon resists rust and mild corrosion, making it a practical choice for humid workshops, light outdoor enclosures, and applications where condensation is present. Note that nylon can absorb a small amount of moisture over time, which may cause minor dimensional changes — account for this in tight-tolerance assemblies.
Order 1–2 pieces for prototyping or single-machine builds. Choose 5 or 10 pieces if you are building multiple units, want spares on hand for maintenance, or are running a small production batch. The per-unit cost decreases with larger pack quantities, so bulk packs offer better value for repeat builds.
Yes — a 1 Mod 17T nylon pinion is commonly used in direct-drive and Bowden extruder assemblies where a plastic-to-plastic or plastic-to-metal gear pair is preferred for quiet operation and reduced filament grinding. Confirm the bore matches your extruder motor shaft and that the gear OD clears your extruder housing.
