2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub
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2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub

2 Module 12~30 Teeth, 8mm-25mm Bore Stainless Spur Gear, Drive Gearbox With Hub

HomeDIYer
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By HomeDIYer®

Price:
$45.36 USD
Stock:
In stock (500 units), ready to be shipped

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Description

2 Module Stainless Spur Gear with Hub — Precision Drive for DIY Gearboxes

When your automation project demands reliable torque transfer without rust or slop, finding a spur gear that fits your exact shaft is a constant headache. Hobbyists, robotics builders, and small workshop engineers need a stainless spur gear that drops straight onto a keyed or plain bore shaft and stays there — this 2 Module series with integrated hub is built for exactly that.

Each gear is machined from stainless steel, offering corrosion resistance suited to both indoor and light outdoor environments. The 2M (Module 2) tooth profile covers 12 to 30 teeth, with outer diameters ranging from approximately 28 mm (1.10 in) for 12T up to approximately 64 mm (2.52 in) for 30T. Bore options span 8 mm through 25 mm, with keyway dimensions matched to bore size (e.g., 5×2.3 mm keyway for 14–17 mm bores, 6×2.8 mm for 18–20 mm bores, 8×3.3 mm for 24–25 mm bores). The integrated hub provides additional shaft engagement length for improved torque stability.

Typical use cases include DIY CNC axis drives where a 2 module stainless spur gear replaces worn plastic gears, small conveyor gearbox builds requiring a corrosion-resistant drive gear with hub, and educational robotics platforms needing a precise 2M gear pair for controlled speed reduction.

⚙️ Compatibility: Designed for 2 Module (2M) gear systems. Meshes with any standard Module 2 spur or rack gear. Bore sizes with keyways require a matching keyed shaft; plain bore variants suit smooth shafts with set-screw retention.

✅ Key Features of These 2 Module Stainless Spur Gears with Hub

🔩 Stainless Steel Construction

Machined from stainless steel for corrosion resistance in humid, wet, or chemically exposed environments — outlasting carbon steel alternatives in demanding DIY builds.

📐 Wide Tooth Count Range (12–30T)

Seventeen tooth-count options from 12 to 30 teeth let you dial in your exact gear ratio without compromise, covering a broad range of speed-reduction and torque-multiplication needs.

🎯 Multiple Bore Sizes with Matched Keyways

Bore options from 8 mm to 25 mm, each with appropriately sized keyways (or process-hole blanks for custom boring), ensuring a secure, slip-free shaft connection.

🏗️ Integrated Hub for Extended Shaft Engagement

The built-in hub increases the contact length between gear and shaft, distributing load more evenly and reducing wobble under dynamic torque loads.

⚡ Standard 2M Tooth Profile

Conforms to the Module 2 standard, ensuring direct interchangeability with any other 2M-rated spur gear, rack, or pinion in your drivetrain.

🔄 Process-Hole Option for Custom Boring

Select variants are available with a process hole (pilot bore), allowing machinists to finish-bore to a custom diameter for non-standard shaft sizes.

📐 Technical Specifications — 2 Module Stainless Spur Gear

Module 2M (Module 2)
Tooth Count Options 12, 13, 14, 15, 16, 17, 18, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30 Teeth
Bore Size Options 8 mm, 10 mm, 12 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 22 mm, 24 mm, 25 mm, Process Hole
Keyway Dimensions 4×1.8 mm (12 mm bore) / 5×2.3 mm (14–17 mm bore) / 6×2.8 mm (18–20 mm bore) / 8×3.3 mm (24–25 mm bore)
Outer Diameter Range Approx. 28 mm – 64 mm (1.10 in – 2.52 in), varies by tooth count
Material Stainless Steel
Hub Integrated (with hub)
Tooth Profile Standard involute spur, Module 2
Pressure Angle See variant options
Face Width See variant options
Finish Natural stainless (uncoated)
Units per Order 1 piece

❓ Frequently Asked Questions

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

Tooth count determines your gear ratio. Divide the driven gear teeth by the driving gear teeth to get the ratio. For example, pairing a 12T pinion with a 24T gear gives a 2:1 reduction — the output shaft turns at half the speed with twice the torque. Select tooth counts based on the ratio you need and the center distance between shafts (center distance = (T1 + T2) × Module / 2).

What bore size should I select for my shaft?

Choose the bore that matches your shaft diameter exactly. If your shaft is 12 mm, select the 12 mm bore variant. For shafts with keyways, confirm the keyway dimensions match — this listing specifies the keyway size for each bore (e.g., 5×2.3 mm for 14–17 mm bores). If your shaft diameter is non-standard, consider the Process Hole variant and finish-bore to your required size.

Are these gears corrosion-resistant enough for outdoor or wet environments?

Yes. Stainless steel provides significantly better corrosion resistance than carbon steel or cast iron gears. These gears are suitable for humid workshops, light outdoor enclosures, and applications where occasional moisture contact is expected. For fully submerged or highly corrosive chemical environments, consult a materials engineer for suitability.

Will these mesh with my existing Module 2 gears or rack?

Yes — any gear or rack rated Module 2 (2M) with a standard 20° pressure angle will mesh correctly with these gears. Module is the universal sizing standard for metric spur gears, so brand does not matter as long as the module number matches.

What is a Process Hole variant and when should I choose it?

A Process Hole variant is supplied with a small pilot bore rather than a finished bore. This allows a machinist to bore the hole to any custom diameter and cut a custom keyway. Choose this option when your shaft size falls outside the listed bore options, or when you need a non-standard keyway specification.

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

Center distance (C) = (Number of teeth on Gear 1 + Number of teeth on Gear 2) × Module / 2. For example, a 15T and a 25T gear in Module 2: C = (15 + 25) × 2 / 2 = 40 mm. Use this to position your shafts correctly before mounting.

Can I use these gears without a keyway (set-screw only)?

The 8 mm and 10 mm bore variants do not include a keyway and rely on set-screw retention against a flat or smooth shaft. For higher torque applications, a keyed bore is strongly recommended to prevent rotational slipping. Check the bore description carefully before ordering.

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

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