2pcs Spur Gear Module 2 58 Tooth Nylon Plastic Gear Pinion Motor Gear Flat Blue

Measure your motor shaft diameter with a caliper before ordering. The bore diameter of the gear must match your shaft size exactly for a secure fit. If your shaft is between standard sizes, select the next smaller bore and use a shaft coupler or bore-out service. Check the variant options on this listing for available bore sizes.

Engineering-grade nylon (PA) is rated for moderate continuous loads in dry or lightly lubricated environments. For high-torque or high-speed applications (above approximately 500 RPM under significant load), consider pairing with a metal pinion on the drive side and using this nylon gear on the driven side to balance wear. Always verify your torque requirements against the gear's face width and material rating.

Yes. Nylon is inherently resistant to moisture, mild chemicals, and oxidation, making these gears suitable for humid environments, light outdoor enclosures, and applications where metal gears would rust. They are not rated for immersion in strong solvents or acids.

Yes, provided your existing rack or mating gear is also Module 2 (M2) with a 20° pressure angle — the industry standard for M2 components. Module 2 gears are not interchangeable with Module 1, Module 1.5, or other module sizes. If you are unsure of your existing gear's module, count the teeth and measure the pitch circle diameter; dividing PCD by tooth count gives you the module.

Nylon is self-lubricating under most operating conditions, so no grease or oil is required for standard use. In high-speed or high-load scenarios, a light application of PTFE-based dry lubricant can extend tooth life. Avoid petroleum-based greases, which can degrade nylon over time.

Spur gears have straight teeth parallel to the gear axis, making them simple to install and replace with no axial thrust load. Helical gears have angled teeth that engage more gradually, producing less noise at higher speeds but generating axial forces that require thrust bearings. For most DIY, 3D printer, and light robotics applications, spur gears are the practical choice due to their simplicity and lower cost.

Nylon gears perform well in dusty or lightly contaminated environments because the material does not corrode and minor abrasive particles tend to embed rather than score the tooth surface. For outdoor use, protect the gear assembly from direct UV exposure over extended periods, as prolonged sunlight can gradually reduce nylon's mechanical properties. A simple enclosure or cover is recommended for permanent outdoor installations.