Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
When your project demands a low-noise, corrosion-resistant gear that won't add unnecessary mass to your drivetrain, metal options often fall short. Hobbyists, robotics builders, and small-machine designers working with 1-module pitch systems need a reliable plastic pinion gear that fits standard shafts without custom machining. This 1 Mod 40-tooth blue nylon spur gear is engineered for exactly that use case.
Each gear is machined from engineering-grade blue nylon (PA66 or equivalent), offering a good balance of mechanical strength, low friction, and dimensional stability. The stepped bore design accommodates shaft diameters from 6mm to 17mm (approximately 0.24" to 0.67"), and the 1-module tooth profile ensures compatibility with standard metric gear systems. The 40-tooth count gives a pitch circle diameter of 40mm (≈1.57").
Typical applications include 1 mod 40T spur gear for 3D printer extruder drives, small robotic arm joint gearing, DIY CNC axis transmission, and light-duty conveyor or automation prototyping where a plastic pinion gear with step bore is preferred over metal for weight and noise reduction.
| Module (Mod) | 1M |
|---|---|
| Number of Teeth | 40T |
| Pitch Circle Diameter | 40mm (≈1.57") |
| Pressure Angle | 20° (standard metric) |
| Bore Diameter Options | 6 / 7 / 8 / 10 / 12 / 14 / 15 / 16 / 17mm |
| Bore Style | Stepped bore |
| Material | Engineering nylon (PA66-class) |
| Color | Blue |
| Gear Type | Spur gear (external tooth) |
| Face Width | See variant options |
| Hub Diameter | See variant options |
| Overall Length | See variant options |
| Packing Quantity | 1 PCS / 2 PCS / 5 PCS |
Select the bore that matches your motor or drive shaft diameter exactly. Available options are 6mm, 7mm, 8mm, 10mm, 12mm, 14mm, 15mm, 16mm, and 17mm. The stepped bore design means the gear seats at the correct diameter without requiring a separate bushing. If your shaft is between listed sizes, a set screw or keyway adapter is recommended — contact us to confirm fit before ordering.
Engineering nylon (PA66-class) offers a tensile strength typically in the range of 70–85 MPa and is suitable for light-to-medium duty applications such as 3D printer drives, small robotic joints, and hobby CNC systems. For high-torque or continuous heavy-load applications, a metal gear would be more appropriate. If you are unsure, share your torque and RPM requirements with us and we can advise.
Yes. Nylon is inherently resistant to moisture, mild oils, and many common chemicals, making it a good choice for environments where metal gears would corrode. However, prolonged submersion in water can cause nylon to absorb moisture and slightly swell, which may affect dimensional tolerances. For fully wet or submerged applications, verify clearances before deployment.
Yes, provided your existing gear or rack is also Module 1 (1M) with a standard 20° pressure angle. The 1M tooth profile is a universal metric standard, so this nylon gear will mesh directly with any conforming 1M metal or plastic gear, rack, or pinion without modification.
With Module 1 and 40 teeth, the pitch circle diameter (PCD) is 40mm (≈1.57"). The PCD determines the theoretical contact circle used to calculate center distance between meshing gears. To mesh two gears correctly, their center distance should equal half the sum of their PCDs. For example, pairing this 40T gear with a 20T gear (PCD 20mm) requires a center distance of (40 + 20) / 2 = 30mm.
Order 1 PCS for prototyping or single-axis builds. Choose 2 PCS if your design uses a gear pair or you want a spare on hand. The 5 PCS pack offers the best per-unit value for multi-axis machines, classroom projects, or batch production runs where consistent gear specs across multiple assemblies are required.
No. The blue pigment is a colorant added during the nylon compounding process and does not alter the material's mechanical strength, friction coefficient, or chemical resistance. The color serves as a visual identifier for module/material type and has no functional impact on gear performance.
