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When your project demands a reliable right-angle power transfer and you can't afford slop, wobble, or rust, the wrong gear set becomes the most expensive part of the build. Hobbyists, robotics engineers, and machine builders who need a compact 90° drive solution will find this Module 1 bevel gear pair engineered to deliver consistent, low-backlash performance across a wide range of shaft sizes.
Each gear is precision-machined from stainless steel, offering corrosion resistance suited for both indoor and outdoor environments. Available in four tooth counts — 15T, 20T, 25T, and 30T — with bore diameters ranging from 4 mm (0.16 in) to 12 mm (0.47 in). Optional keyway bores (3 mm or 4 mm keyway) are available on select variants for positive shaft locking without set-screw slip. Sold individually or as a matched 2-piece miter pair.
Typical use cases include DIY CNC router axis drives requiring a compact 90° bevel gear transmission, small robotics joint mechanisms needing a stainless steel miter gear set for corrosion resistance, and light-duty automation or conveyor corner drives where a module 1 bevel gear with keyway bore ensures zero shaft slip under load.
Machined from stainless steel for corrosion resistance in humid, wet, or chemically exposed environments — no coating to chip or flake over time.
1:1 ratio bevel gear pairing with a precise 90° shaft angle. Consistent tooth geometry across all tooth counts (15T / 20T / 25T / 30T) ensures smooth, low-noise meshing.
Select variants include a 3 mm or 4 mm keyway for positive shaft engagement — eliminates rotational slip under torque without relying solely on set screws.
Nine bore size options (4 / 5 / 6 / 8 / 10 / 12 mm, plus keyway variants) cover the most common motor and shaft diameters used in DIY and light industrial applications.
Choose 15T, 20T, 25T, or 30T to match your torque and speed requirements. Larger tooth counts offer greater load capacity; smaller counts suit higher-speed, lower-torque drives.
Order 1 pcs for replacement or 2 pcs for a complete matched miter gear set. Both gears in a pair share the same module and tooth count for guaranteed mesh compatibility.
| Module | 1 (1 mm circular pitch per tooth) |
|---|---|
| Gear Ratio | 1:1 |
| Shaft Angle | 90° |
| Tooth Count Options | 15T / 20T / 25T / 30T |
| Bore Diameter Options | 4 mm / 5 mm / 6 mm / 8 mm / 10 mm / 12 mm |
| Keyway Options | 3 mm keyway (8 mm bore) / 4 mm keyway (10 mm, 12 mm bore) |
| Material | Stainless Steel |
| Finish | Natural machined stainless |
| Outer Diameter | See variant options |
| Face Width | See variant options |
| Hub Diameter | See variant options |
| Pressure Angle | 20° (typical for Module 1 bevel gears) |
| Quantity per Order | 1 pcs or 2 pcs (matched pair) |
Since this is a 1:1 miter gear set, all tooth counts (15T, 20T, 25T, 30T) deliver the same speed ratio. The difference is load capacity and physical size: 30T gears have a larger pitch diameter and can handle more torque, while 15T gears are more compact and suited to lighter, higher-speed drives. Match the tooth count to your available space and torque requirement.
Yes — a bevel gear drive requires two mating gears. You can select the "2 pcs" quantity option to receive a matched pair, or order two individual gears of the same tooth count separately. Both gears must be the same module (Module 1) and the same tooth count for correct 1:1 meshing.
A plain bore relies on a set screw to lock the gear onto the shaft. A keyway bore includes a machined slot that accepts a standard key, creating a positive mechanical connection that prevents rotational slip under load. If your application involves reversing loads, vibration, or high torque, a keyway bore is the more reliable choice.
Stainless steel offers a good balance of tensile strength and corrosion resistance for light-to-medium duty applications such as robotics joints, small CNC machines, and automation equipment. For very high-torque industrial drives, consider whether a hardened steel or alloy steel gear would be more appropriate. Contact us to confirm suitability for your specific load conditions.
Stainless steel provides inherent corrosion resistance without requiring additional coatings. These gears are suitable for humid, splash-prone, or mildly corrosive environments. For submersion or highly aggressive chemical exposure, verify the specific stainless grade is compatible with your environment before ordering.
Measure the outer diameter of your motor shaft or drive shaft with a caliper. Select the bore size that matches your shaft diameter exactly. If your shaft uses a key for torque transmission, select the corresponding keyway bore variant (e.g., 8 mm + 3 mm Keyway, or 10 mm / 12 mm + 4 mm Keyway). A bore that is too large will cause runout and vibration.
No — bevel gears must be paired with the same tooth count to achieve the correct 90° mesh geometry. Mixing different tooth counts on a standard bevel gear set will result in incorrect contact angles and rapid wear. These gears are designed exclusively for 1:1 miter pairing. For speed reduction, a different gear type (such as a worm gear or helical gear set) would be required.
