2 Mod Spur Gear Plastic Nylon Gear 10T-50T Teeth Transmission Gear for CNC Motor

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2 Mod Spur Gear Plastic Nylon Gear 10T-50T Teeth Transmission Gear for CNC Motor

HomeDIYer

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By HomeDIYer®

Model: 2M 12T

Packing QTY (Piece): 1 PCS

Price:

$5.92 USD

Stock:

In stock (500 units), ready to be shipped

Quantity:

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2 Mod Nylon Spur Gear — Reliable Transmission for CNC Motors & DIY Automation

When a stripped or mismatched gear brings your CNC router, 3D printer, or robotics project to a halt, finding an exact-spec replacement fast is critical. These Module 2 plastic nylon spur gears are designed for makers, hobbyists, and small-workshop engineers who need a dependable, low-noise transmission component without the weight or corrosion risk of metal alternatives.

Each gear is machined from engineering-grade nylon (PA66), offering a good balance of rigidity and impact absorption. The module (pitch) is 2 mm, with tooth counts ranging from 12T to 50T (outer diameter approximately 28 mm–104 mm / 1.1"–4.1"). Bore diameter varies by tooth count — see variant options for exact bore dimensions. The gear face width is typically 10–15 mm (0.39"–0.59").

Typical use cases include CNC motor drive trains requiring lightweight gear reduction, robotics arm joints and servo transmission assemblies, and DIY automation conveyor or indexing mechanisms where low-noise plastic gearing outperforms metal in noise-sensitive environments.

⚙️ Compatibility: Module 2 (Mod 2) standard. Meshes with any Mod 2 spur or rack gear. Verify bore diameter and face width against your shaft and housing before ordering.

✅ Key Features of These 2 Mod Nylon Spur Gears

🔩 Module 2 Standard Pitch — Fully interchangeable with any Mod 2 gear rack, pinion, or mating spur gear for straightforward drop-in replacement or new builds.

🪶 Lightweight Nylon Construction — Engineering-grade PA66 nylon reduces rotational inertia compared to metal gears, easing load on stepper and servo motors in CNC and robotics applications.

🔇 Low-Noise Operation — Nylon-on-nylon or nylon-on-metal meshing significantly dampens gear noise and vibration, making these gears well-suited for noise-sensitive workshop or lab environments.

🛡️ Corrosion-Resistant Material — Unlike steel gears, nylon does not rust or oxidize, making these gears suitable for humid environments or applications where lubrication is minimal.

📐 Wide Tooth Count Range (12T–50T) — Choose from 29 tooth-count variants to dial in your exact gear ratio for speed reduction or torque multiplication in your drive system.

🔄 Sold Individually (1 PCS per Order) — Each listing ships one gear of your selected tooth count, letting you order exactly the quantity your project requires without overstocking.

📐 Technical Specifications — Module 2 Nylon Spur Gear

Module (Pitch)	2 mm (Mod 2)
Tooth Count	12T – 50T (see variant options)
Material	Engineering-grade nylon (PA66)
Outer Diameter	See variant options
Bore Diameter	See variant options
Face Width	Typically 10–15 mm (0.39"–0.59")
Pressure Angle	20°
Finish / Color	Natural nylon (off-white / beige)
Packing Quantity	1 PCS per order
Compatible Gear Type	Mod 2 spur gear, Mod 2 rack
Typical Applications	CNC motor drives, robotics, DIY automation

❓ Frequently Asked Questions

How do I choose the right tooth count for my project?

Your gear ratio is determined by dividing the tooth count of the driven gear by the tooth count of the driving gear. For example, pairing a 12T pinion with a 36T gear gives a 3:1 reduction — tripling torque while reducing speed to one-third. Select tooth counts based on the speed and torque requirements of your CNC motor or servo application.

What is Module 2 and will it mesh with my existing gears?

Module (Mod) is the standardized metric pitch system for gears. Two gears mesh correctly only when they share the same module and pressure angle. These gears are Mod 2 with a 20° pressure angle. They will mesh with any other Mod 2 spur gear or Mod 2 rack regardless of tooth count, as long as the face widths are compatible.

How strong are nylon gears compared to metal gears?

Nylon (PA66) gears offer good tensile strength for light-to-medium duty applications such as CNC routers, 3D printers, and small robotics. They are not recommended for high-torque industrial drives or applications with sustained heavy shock loads. For those scenarios, consider metal (aluminum or steel) Mod 2 gears instead. Nylon's advantage is its self-lubricating surface, low noise, and corrosion resistance.

Are these gears corrosion-resistant? Can I use them in humid environments?

Yes. PA66 nylon does not rust or oxidize, making these gears suitable for humid workshops, outdoor enclosures, or applications where applying grease or oil is impractical. Note that prolonged exposure to water can cause slight dimensional swelling in nylon; for fully submerged or wet environments, verify dimensional tolerances after moisture absorption.

What bore diameter does each gear have? Can I re-bore it to fit my shaft?

Bore diameter varies by tooth count — please refer to the variant options or contact us to confirm the bore size for your selected tooth count before ordering. Nylon gears can generally be re-bored or reamed to a larger diameter using standard machining tools, provided sufficient hub wall thickness remains. Do not re-bore beyond the recommended maximum for your tooth count.

Do I need to lubricate these nylon gears?

Nylon is inherently self-lubricating at light-to-moderate loads, so these gears can run dry in many CNC and robotics applications. For higher-speed or higher-load use, a light application of white lithium grease or PTFE-based lubricant can extend service life and reduce wear. Avoid petroleum-based oils that may degrade nylon over time.

How many gears come in one order? Can I buy in bulk?

Each order ships 1 piece (1 PCS) of your selected tooth count. To purchase multiple gears, simply increase the quantity at checkout or place separate orders for different tooth counts. If you need larger bulk quantities for a workshop or production run, please contact us directly for volume pricing.

🛒 Select your tooth count (Model) above, then add to cart.