1M 1.5M 2M 2.5M Spur Gears Metal Spur Transmission Gear Multiple Size 10-150T

Roll over image to zoom in Click on image to zoom

1M 1.5M 2M 2.5M Spur Gears Metal Spur Transmission Gear Multiple Size 10-150T

HomeDIYer

No reviews

By HomeDIYer®

MOD: 1M

Teeth: 1M 12T

Qty(pcs): 1

Price:

$2.75 USD

Stock:

In stock (500 units), ready to be shipped

Quantity:

Share this product

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

DIY Expert Support

Get fitment advice & recommendations

Mon–Fri 8:30 AM – 8:00 PM

WhatsApp Email Us

24-Hour Fast Ship

Arrives in 3–14 Days

Worldwide Shipping

30-Day Returns

1 tree planted with every purchase

Metal Spur Gears MOD 1M–2.5M — Precision Transmission Gear for Robotics & DIY Drives

When a stripped plastic gear or mismatched module brings your build to a halt, you need a reliable metal spur gear that drops straight into your drivetrain. These metal spur transmission gears are engineered for makers, robotics builders, CNC hobbyists, and small-batch manufacturers who demand dimensional accuracy and repeatable mesh quality across every tooth count.

Each gear is machined from metal stock (typically carbon steel or brass depending on variant) with a standard involute tooth profile. Available in four module sizes — MOD 1M, 1.5M, 2M, and 2.5M — and tooth counts ranging from 10T to 150T, pitch diameters span approximately 10 mm (0.39 in) for the smallest 1M 10T up to 375 mm (14.76 in) for the largest 2.5M 150T. Bore diameter and keyway dimensions vary by tooth count; see variant options for confirmed bore specs.

Typical use cases include: spur gear reduction stages in desktop CNC routers and laser cutters; wheel drive assemblies in differential-drive robots and autonomous guided vehicles; and gear-train prototyping for small-batch automation equipment where standard module gears simplify sourcing and replacement.

⚙️ Compatibility: Standard involute tooth profile. Gears of the same MOD mesh with each other. Confirm bore diameter and face width against your shaft and housing before ordering.

✅ Key Features of These Metal Spur Transmission Gears

🔩 Four Module Sizes

MOD 1M, 1.5M, 2M, and 2.5M available in a single listing — choose the module that matches your existing drivetrain without sourcing from multiple suppliers.

🦷 Wide Tooth-Count Range

10T through 150T (MOD-dependent) lets you dial in your gear ratio precisely, from high-speed pinions to large reduction wheels in a single product family.

🏗️ Metal Construction

Machined metal body delivers the load capacity and wear resistance needed for continuous-duty drive applications where plastic gears fail prematurely.

📐 Standard Involute Profile

Conforms to standard module gear geometry, ensuring smooth mesh with any same-MOD mating gear and predictable center-distance calculations.

🔄 Broad Application Coverage

Suitable for robotics, CNC machines, 3D printer extruder drives, conveyor prototypes, and general mechanical power transmission projects.

📦 Flexible Quantity Options

Sold individually (1 pc per order) so you can source exactly the tooth count and module you need without committing to bulk packs.

📐 Technical Specifications — Metal Spur Transmission Gears

Module (MOD)	1M / 1.5M / 2M / 2.5M (select above)
Tooth Count	10T – 150T (MOD-dependent, select above)
Tooth Profile	Standard involute
Material	See variant options
Pitch Diameter	MOD × Teeth (e.g., 1M × 20T = 20 mm / 0.79 in)
Face Width	See variant options
Bore Diameter	See variant options
Pressure Angle	20°
Finish	See variant options
Quantity per Order	1 pc

❓ Frequently Asked Questions

How do I choose the right MOD (module) for my project?

The module (MOD) defines the tooth size and must match between mating gears. MOD 1M has the smallest teeth and suits compact, lower-torque drives. MOD 2.5M has larger teeth and handles higher torque. Measure the pitch diameter of your existing gear and divide by its tooth count — the result is the module in millimeters. Select the same MOD here to ensure proper mesh.

Can I mesh a 1M gear with a 1.5M gear?

No. Gears of different modules cannot mesh correctly — the tooth pitch and depth differ, causing interference or no contact at all. Always pair gears of the same MOD. If you need a specific gear ratio, choose two gears with the same MOD and different tooth counts.

What material are these spur gears made from?

Material varies by variant. Typical options include carbon steel (for strength and wear resistance) and brass (for corrosion resistance and quieter operation). Please check the variant detail or contact us to confirm the material for your specific MOD and tooth count before ordering.

Are these gears corrosion-resistant for outdoor or humid environments?

Carbon steel variants may require lubrication and periodic maintenance in humid or outdoor environments to prevent surface rust. Brass variants offer better inherent corrosion resistance. For harsh environments, consider applying a light machine oil or grease to the tooth faces and bore after installation.

How do I calculate the center distance between two meshing gears?

Center distance = (Teeth of Gear A + Teeth of Gear B) × MOD ÷ 2. For example, a 1M 20T driving a 1M 40T: center distance = (20 + 40) × 1 ÷ 2 = 30 mm. This formula applies to all standard involute spur gears of the same module.

What bore diameter should I expect, and can I re-bore the gear?

Bore diameter varies by tooth count and MOD — please see variant options or contact us to confirm. Metal gears can typically be re-bored or broached by a machine shop to fit a specific shaft diameter or keyway, provided sufficient hub wall thickness remains after machining.

Which tooth count should I choose for a specific gear ratio?

Gear ratio = Driven Teeth ÷ Driver Teeth. For a 3:1 reduction, pair a 15T driver with a 45T driven gear (same MOD). For a 5:1 reduction, use a 12T driver with a 60T driven gear. Select the tooth counts that give your target ratio while keeping both gears within the same MOD family.

🛒 Select your MOD and tooth count above, then add to cart.