1 Mod 56-65 Teeth Spur Gear Transmission Gear With Step 45# Steel Motor Gears

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1 Mod 56-65 Teeth Spur Gear Transmission Gear With Step 45# Steel Motor Gears

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By HomeDIYer®

Choose Model: 1M 56T

Bore: 8mm

Packing Quantity: 1 pcs

Price:

$39.09 USD

Stock:

In stock (500 units), ready to be shipped

Quantity:

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1 Mod Spur Gears (56-65 Teeth) for Reliable Motor Power Transmission

When a bench project, robot drive, or small machine skips, whines, or loses torque, the gear mesh is often the culprit. These 1 mod spur gears are built for makers, hobbyists, and small workshops who need a dependable 45# steel gear that transmits motor power smoothly without backlash surprises.

Each gear is machined from 45# steel in a 1 module (M=1) tooth profile, offered in tooth counts from 56 to 65 teeth. Bore sizes range from roughly 6-30 mm (about 0.24-1.18 in), with keyed and stepped-hub options available so you can match the gear to your shaft. Select tooth count, bore, and pack quantity from the variant options above.

Use them as spur gear replacement parts in geared DC motor builds, as transmission gears in CNC and 3D-printer conversions, or as motor pinion mates in robotics and automation projects where consistent 1 mod gear meshing matters.

⚙️ Meshes with other 1 module (M=1) spur gears of matching tooth profile. Confirm your shaft diameter and keyway against the Bore option before ordering.

✅ Key Features of These 1 Mod Spur Gears

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45# Steel Construction
Medium-carbon 45# steel gives the gear body strength to carry motor torque in repeated-use drivetrains.

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1 Module Tooth Profile
Standard M=1 spur tooth form meshes cleanly with other 1 mod gears for predictable gear ratios.

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56-65 Tooth Range
Choose from 56, 58, 60, 62, and 65 tooth models to dial in the reduction your build needs.

⚙️

Multiple Bore Options
Bore sizes from about 6-30 mm, including keyed and stepped-hub variants for a secure shaft fit.

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Built for DIY Drivetrains
Suited to geared motors, robotics, CNC conversions, and small automation transmissions.

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Flexible Pack Quantities
Order in 1, 2, or 3 piece packs to cover multi-gear assemblies and keep spares on hand.

📐 Technical Specifications — Spur Gears

Gear Type	Spur gear (external)
Module	1 Mod (M=1)
Tooth Count	56, 58, 60, 62, 65 teeth (see variant options)
Material	45# steel
Bore Diameter	Approx. 6-30 mm (0.24-1.18 in) — see variant options
Bore Style	Plain, keyed, and stepped-hub options — see variant options
Pack Quantity	1, 2, or 3 pcs — see variant options
Typical Use	Motor transmission, robotics, CNC and 3D-printer drives

❓ Frequently Asked Questions

How do I choose the right tooth count?

Your gear ratio comes from the tooth counts of the meshing pair. Higher tooth counts (up to 65T here) give more reduction and torque at lower output speed. Match this gear to its mating gear so both share the 1 module (M=1) profile.

Which bore size should I select?

Pick the bore that matches your motor or shaft diameter. Bore options run roughly 6-30 mm, with keyed and stepped-hub versions for a tighter, slip-resistant fit. Measure your shaft first, then choose the matching Bore option above.

How strong are these gears?

They are machined from 45# medium-carbon steel, which handles the torque loads typical of geared DC motors, robotics, and small transmissions. Actual load capacity depends on your speed, tooth count, and duty cycle.

Will these gears resist corrosion?

45# steel is not stainless, so in humid or wet environments a light film of machine oil or grease helps guard against surface rust and also keeps the tooth mesh running smoothly.

Are these gears compatible with other modules?

No. A 1 module gear only meshes correctly with other 1 module (M=1) spur gears. Pairing it with a different module will cause poor mesh, noise, and wear.

Can I buy more than one at a time?

Yes. Each model is available in 1, 2, or 3 piece packs, so you can order matched sets for a gear train or keep spares for maintenance.

What projects are these best suited for?

They work well in geared motor assemblies, robot drivetrains, CNC and 3D-printer conversions, and other small automation builds that rely on steady 1 mod gear meshing.

🛒 Select your model, bore, and pack quantity above, then add to cart.