Module 2M Flat Gear Motor Transmission Spur Gear 10T to 96T Gears With Screw

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Module 2M Flat Gear Motor Transmission Spur Gear 10T to 96T Gears With Screw

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By HomeDIYer®

NO.of Teeth: 2M 10T

Packing Quantity(pcs): 1

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$12.10 USD

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In stock (500 units), ready to be shipped

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Module 2M Spur Gear with Set Screw — Precise Power Transmission for DIY Builds

When your motor drive project demands repeatable, low-backlash gear meshing, finding a spur gear that fits your shaft and tooth count without custom machining is a real challenge. These Module 2M flat spur gears with set screw are designed for makers, robotics builders, and small-batch automation engineers who need a reliable off-the-shelf solution across a wide tooth range.

Each gear is machined from engineering-grade material (typically aluminum alloy or POM/nylon depending on variant) with a Module 2 (2M) tooth profile. The bore diameter and set screw allow direct shaft mounting without additional hardware. The tooth count spans from 10T to 96T, covering pitch circle diameters of approximately 20 mm (0.79 in) at 10T up to 192 mm (7.56 in) at 96T.

Typical use cases include DC motor gearbox reduction stages for wheeled robots, belt-and-gear hybrid drive systems for CNC axis drives, and open-frame transmission assemblies for conveyor or actuator prototypes — all applications where a standard 2M spur gear with set screw simplifies assembly and reduces lead time.

⚙️ Compatibility: Fits standard Module 2 (2M) gear mesh systems. Verify bore diameter matches your motor or shaft before ordering. Pairs with any 2M-pitch mating gear, rack, or pinion.

✅ Key Features of These Module 2M Spur Gears

🔩 Set Screw Included

Each gear ships with a matching set screw for secure shaft locking without keyways or press-fit tooling.

📐 Wide Tooth Range: 10T – 96T

74 tooth-count options in a single product listing let you dial in your exact gear ratio without sourcing from multiple suppliers.

⚡ Standard Module 2 Tooth Profile

Full-depth 2M involute tooth form ensures smooth meshing and interchangeability with any standard 2M mating gear or rack.

🏗️ Flat Face Design

Uniform face width across the tooth range keeps axial alignment straightforward in open-frame and plate-mounted drive assemblies.

🔄 Direct Motor Shaft Mounting

Bored center with set screw tapped radially — mount directly onto D-shaft or round shaft motors without additional hubs or adapters.

🛠️ Prototyping to Small-Batch Ready

Consistent dimensional tolerances across the range make these gears suitable for both one-off prototypes and repeatable small-batch production runs.

📐 Technical Specifications — Module 2M Spur Gear

Module	2M (Module 2)
Tooth Count Range	10T – 96T (see variant options)
Tooth Profile	Involute, full-depth
Pressure Angle	20°
Pitch Circle Diameter	See variant options (= Module × Teeth)
Face Width	See variant options
Bore Diameter	See variant options
Material	See variant options
Fastening Method	Set screw (included)
Gear Type	Flat spur gear
Packing Quantity	1 pc per order (default)

❓ Frequently Asked Questions

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

Determine your required gear ratio first: divide the driver tooth count by the driven tooth count. For example, a 20T driver meshing with a 60T driven gear gives a 3:1 reduction. Select tooth counts that achieve your target ratio while keeping the center distance (= Module × (T1 + T2) / 2 = (T1 + T2) mm for 2M gears) compatible with your frame layout.

What shaft diameter does the bore fit?

Bore diameter varies by tooth count and is listed in the variant details. Common bore sizes in the 2M range are typically 4 mm, 5 mm, 6 mm, or 8 mm. Check the specific variant specification before ordering to confirm compatibility with your motor or drive shaft.

Are these gears strong enough for continuous motor drive use?

These gears are suited for light-to-medium duty motor transmission applications such as robotics, small conveyors, and automation prototypes. For heavy-load or high-RPM industrial drives, verify the material and face width of your selected variant against your torque and speed requirements. Contact us to confirm suitability for demanding duty cycles.

Will these gears corrode or degrade outdoors?

Corrosion resistance depends on the material of the specific variant. Aluminum variants offer moderate corrosion resistance suitable for indoor and sheltered outdoor use. POM/nylon variants are inherently moisture-resistant. For harsh outdoor or wet environments, consider adding a light lubricant or protective coating, and verify the material of your chosen variant.

Can I mesh two gears from this listing together?

Yes — all gears in this listing share the same Module 2 tooth profile and 20° pressure angle, so any two variants will mesh correctly with each other. Simply ensure the center distance between shafts equals (T1 + T2) mm, where T1 and T2 are the tooth counts of the two gears.

Does the set screw work on D-shaft motors?

Yes. The radially tapped set screw seats against the flat of a D-shaft, providing positive rotational locking without slipping. For round shafts, the set screw still provides adequate holding force for light-to-medium torque applications. Ensure the bore diameter matches your shaft before ordering.

What is the difference between the tooth count options — does a higher tooth count mean a larger gear?

Yes. For Module 2 gears, the pitch circle diameter equals 2 × tooth count (in mm). So a 10T gear has a 20 mm pitch circle diameter, while a 96T gear has a 192 mm pitch circle diameter. A higher tooth count also means a lower gear ratio when used as the driven gear, resulting in more torque and less speed.

🛒 Select your tooth count (NO. of Teeth) above, then add to cart.