Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
When a stripped or undersized gear brings your build to a halt, you need a replacement that fits precisely and holds up under load. These stainless steel spur gears are designed for engineers, hobbyists, and small-batch manufacturers who demand dimensional accuracy and corrosion resistance in compact drive systems.
Each gear is machined from stainless steel and offered in Module 1.5M or 2M with tooth counts ranging from 12T to 30T (approximately 0.47 in to 1.18 in pitch diameter range). Bore options span 8 mm to 25 mm with matched keyways from 3 mm to 8 mm, enabling direct shaft mounting without additional machining.
Typical applications include DC motor pinion drives in robotics and automation, CNC axis drive trains requiring low-backlash spur gear sets, and compact gearbox assemblies in 3D printers, conveyor systems, and DIY power transmission projects.
Machined from corrosion-resistant stainless steel for durability in humid, washdown, or outdoor environments where carbon steel gears would corrode.
Available in Module 1.5M and 2M with 12T through 30T options, covering a broad range of gear ratios for motor pinion and driven gear applications.
Pre-cut keyway bores (8–25 mm bore, 3–8 mm keyway) allow secure, torque-transmitting shaft mounting without slipping under load.
Standard flat spur gear geometry ensures straightforward meshing with mating gears of the same module, minimizing alignment complexity.
Order as a single piece for prototyping or in packs of 2 for paired drive setups — reducing per-unit cost on repeat builds.
Tooth counts starting at 12T make these suitable as motor pinion gears in compact gearhead assemblies, robotics drives, and servo systems.
| Material | Stainless Steel |
|---|---|
| Gear Type | Spur Gear (Flat) |
| Module | 1.5M / 2M (see variant options) |
| Tooth Count | 12T – 30T (see variant options) |
| Bore Diameter | 8 mm – 25 mm (see variant options) |
| Keyway Width | 3 mm – 8 mm (matched to bore; see variant options) |
| Pressure Angle | 20° (standard) |
| Pitch Diameter | See variant options |
| Face Width | See variant options |
| Finish | Natural stainless (uncoated) |
| Pack Quantity | 1 pc or 2 pcs (see variant options) |
The module must match your mating gear — a 1.5M gear only meshes correctly with other 1.5M gears, and a 2M gear with 2M gears. Tooth count determines the gear ratio: divide the driven gear tooth count by the driver (pinion) tooth count to get the reduction ratio. For motor pinion applications, smaller tooth counts (12T–16T) are common on the motor shaft.
Select the bore diameter that matches your shaft diameter. The keyway is pre-cut to a standard width for each bore size (e.g., 8 mm bore uses a 3 mm keyway, 14 mm bore uses a 5 mm keyway). Measure your shaft diameter precisely before ordering — a bore that is too small cannot be installed without machining.
Stainless steel spur gears offer good tensile strength and are suitable for moderate-torque drives. For very high-torque or shock-load applications, verify the gear's rated torque capacity against your system requirements. Module 2M gears have larger teeth and generally handle higher torque than equivalent 1.5M gears.
Stainless steel provides significantly better corrosion resistance than carbon steel or mild steel gears. These gears are suitable for humid environments, light washdown conditions, and outdoor use where moisture exposure is expected. For highly aggressive chemical environments, verify compatibility with your specific media.
No. Gears of different modules are not interchangeable and will not mesh correctly. Both the driver and driven gear in a gear pair must share the same module. Mixing modules results in incorrect tooth engagement, noise, and accelerated wear.
A "Process hole" variant has a pilot bore that requires further machining (reaming or boring) to your exact shaft size. This option is intended for users who need a custom bore diameter not available in the standard keyway options. Standard keyway bore variants are ready to mount on matching shafts without additional machining.
Both options are available. Select Pack Quantity 1 for a single gear (ideal for prototyping or replacing one gear in an existing drive), or Pack Quantity 2 for a matched pair at a lower per-unit cost — useful when building a complete gear stage from scratch.
