3 Modul Steel Spur Gears Pinion Gear Thick 30mm 10-100 Teeth For 3D CNC
3 Modul Steel Spur Gears Pinion Gear Thick 30mm 10-100 Teeth For 3D CNC
3 Modul Steel Spur Gears Pinion Gear Thick 30mm 10-100 Teeth For 3D CNC
3 Modul Steel Spur Gears Pinion Gear Thick 30mm 10-100 Teeth For 3D CNC
3 Modul Steel Spur Gears Pinion Gear Thick 30mm 10-100 Teeth For 3D CNC
3 Modul Steel Spur Gears Pinion Gear Thick 30mm 10-100 Teeth For 3D CNC
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3 Modul Steel Spur Gears Pinion Gear Thick 30mm 10-100 Teeth For 3D CNC3 Modul Steel Spur Gears Pinion Gear Thick 30mm 10-100 Teeth For 3D CNC3 Modul Steel Spur Gears Pinion Gear Thick 30mm 10-100 Teeth For 3D CNC3 Modul Steel Spur Gears Pinion Gear Thick 30mm 10-100 Teeth For 3D CNC3 Modul Steel Spur Gears Pinion Gear Thick 30mm 10-100 Teeth For 3D CNC3 Modul Steel Spur Gears Pinion Gear Thick 30mm 10-100 Teeth For 3D CNC

3 Modul Steel Spur Gears Pinion Gear Thick 30mm 10-100 Teeth For 3D CNC

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Price:
$11.00 USD
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In stock (500 units), ready to be shipped

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Description

Module 3 Steel Spur Gears — Precision Pinion Gears for CNC, 3D Printing & Automation

When your CNC router, 3D printer, or motion-control rig demands consistent torque transfer without backlash surprises, the right spur gear makes all the difference. Engineers, makers, and workshop builders who need a reliable Module 3 steel pinion gear with a generous 30 mm face width will find this range covers the most common tooth counts in a single listing.

These spur gears are machined from carbon steel, offering a solid balance of strength and machinability. Each gear features a Module 3 (3 mm/tooth pitch) profile with a face width (thickness) of 30 mm (~1.18 in). Tooth counts span from 10 to 51 teeth, giving pitch circle diameters from approximately 30 mm (~1.18 in) for the 10-tooth pinion up to approximately 153 mm (~6.02 in) for the 51-tooth gear. Bore diameter and keyway dimensions vary by tooth count — see variant options for exact bore specs.

Typical use cases include CNC rack-and-pinion drive systems for router gantries, extruder and Z-axis drive trains in FDM 3D printers, rotary indexing tables and robotic joint actuators, and custom automation conveyor or feed mechanisms requiring a standard Module 3 mesh.

⚙️ Compatibility: Meshes with any standard Module 3 (Mod 3) spur gear, rack, or pinion. Verify bore diameter and keyway against your shaft before ordering.

✅ Key Features of These Module 3 Steel Spur Gears

🔩 Carbon Steel Construction

Machined from carbon steel for dependable strength under continuous rotational loads in CNC and automation applications.

📐 30 mm Face Width

A 30 mm (1.18 in) tooth face provides broad contact area, distributing load evenly and reducing tooth wear over long duty cycles.

🔢 Wide Tooth-Count Range (10–51 Teeth)

42 variants from 10 to 51 teeth let you dial in the exact gear ratio your drive system needs without custom machining.

🎯 Standard Module 3 Profile

Conforms to the international Module 3 gear standard, ensuring direct mesh compatibility with off-the-shelf Mod 3 racks and mating gears.

🔄 Precision-Cut Involute Teeth

Involute tooth geometry delivers smooth, low-noise power transmission and consistent pitch-line velocity across the full tooth-count range.

🛠️ Ready for CNC & 3D Printer Builds

Sized and profiled for direct integration into CNC router gantries, 3D printer drive trains, rotary tables, and custom automation rigs.

📐 Technical Specifications — Module 3 Steel Spur Gears

Module (Mod) 3
Tooth Count Range 10 – 51 Teeth (select variant)
Face Width (Thickness) 30 mm (1.18 in)
Pitch Circle Diameter 30 mm – 153 mm (1.18 in – 6.02 in), varies by tooth count
Pressure Angle 20° (standard involute)
Material Carbon Steel
Finish See variant options
Bore Diameter See variant options
Keyway See variant options
Tooth Profile Involute Spur
Gear Standard Module (ISO/DIN)
Application CNC, 3D Printing, Robotics, Automation

❓ Frequently Asked Questions

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

Determine your required gear ratio first: divide the driven gear tooth count by the driving pinion tooth count. For CNC rack-and-pinion systems, calculate linear travel per revolution using the formula: travel = π × Module × Teeth. Select the tooth count that gives you the desired travel-per-step or torque multiplication for your motor.

What is Module 3 and is it compatible with my existing gears?

Module (Mod) is the international standard for gear tooth size: Module 3 means 3 mm of pitch circle diameter per tooth. These gears will mesh correctly with any other Module 3 spur gear, pinion, or rack that shares the same 20° pressure angle. They are not compatible with Module 2, Module 4, or imperial DP gears.

How strong are these steel spur gears under load?

Carbon steel spur gears at Module 3 with a 30 mm face width are suitable for moderate-to-heavy loads typical of CNC router gantries and robotic joints. Exact load ratings depend on tooth count, shaft fit, lubrication, and operating speed. For high-cycle or high-speed applications, ensure proper lubrication and verify your torque requirements against the gear's pitch circle diameter.

Do these gears resist corrosion?

Carbon steel has moderate corrosion resistance. For indoor CNC and 3D printer environments this is generally sufficient. If your application involves moisture, coolant mist, or outdoor exposure, consider applying a light machine oil coating or selecting a stainless steel alternative for your setup.

What bore diameter and keyway do these gears have?

Bore diameter and keyway dimensions vary by tooth count and are listed in the variant options. Please check the specific variant detail before ordering to confirm compatibility with your shaft diameter. If you need a custom bore, the carbon steel material is readily machinable on a lathe.

Can I use these gears in a 3D printer extruder or Z-axis drive?

Yes. Module 3 spur gears are commonly used in large-format FDM 3D printer Z-axis lead screw drives and direct-drive extruder reduction stages. Select a tooth count that achieves your target gear ratio, and verify the bore fits your motor shaft or lead screw coupler diameter.

How do I measure my existing gear to confirm it is Module 3?

Count the teeth on your existing gear, then measure the outside diameter (tip-to-tip) in millimeters. Use the formula: Module = Outside Diameter ÷ (Tooth Count + 2). If the result is approximately 3.0, your gear is Module 3 and these pinions will mesh with it correctly.

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

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