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When a drivetrain needs to change direction by 90° without losing torque, finding a bevel gear that fits your shaft precisely — and holds up under load — is the real challenge. Makers, machine builders, and mechanical engineers who need a reliable right-angle power transmission solution will find these Module 2 bevel miter gears a dependable choice for both prototype and production builds.
Each gear is machined from C45 medium-carbon steel and treated with a black hardening finish for improved surface hardness and wear resistance. Available in three tooth counts — 20T, 25T, and 30T — with bore sizes ranging from 8 mm (0.31 in) to 30 mm (1.18 in), including keyway options from 4 mm to 8 mm to suit a wide range of shaft diameters. The 1:1 miter ratio means both mating gears are identical, simplifying sourcing and replacement.
These bevel miter gears are well-suited for DIY CNC router axis drives, small conveyor right-angle gearboxes, custom robotic joint assemblies, and light industrial automation equipment where a compact 90° power transfer is required. The Module 2 pitch makes them compatible with standard metric gear systems used across hobbyist and professional mechanical design.
Machined from C45 medium-carbon steel for a solid balance of toughness and machinability, capable of handling moderate-to-high torque loads in continuous-duty applications.
The black hardening treatment increases surface hardness and provides a degree of corrosion resistance, extending service life in environments with light moisture or debris exposure.
Module 2 is a widely used metric gear standard, ensuring straightforward compatibility with other Module 2 components in your drivetrain without custom adaptation.
The 1:1 ratio means both gears in a mating pair are the same part, simplifying inventory and making replacement straightforward — order one SKU for both sides of the mesh.
Bore options from 8 mm to 30 mm with keyway slots (4 mm, 5 mm, 6 mm, or 8 mm) accommodate a broad range of shaft sizes, reducing the need for custom boring or adapters.
Available in packs of 1, 2, 3, 4, 5, or 10 pieces, making it easy to order matched pairs or spares for a full assembly in a single transaction.
| Material | C45 Medium-Carbon Steel |
|---|---|
| Surface Treatment | Black Hardening |
| Gear Module | Module 2 |
| Gear Ratio | 1:1 (Miter) |
| Tooth Count Options | 20T / 25T / 30T |
| Pressure Angle | 20° (standard metric) |
| Bore Diameter Range | 8 mm – 30 mm (0.31 in – 1.18 in) |
| Keyway Options | 4 mm / 5 mm / 6 mm / 8 mm (see variant options) |
| Bore Size | See variant options |
| Outer Diameter (approx.) | See variant options |
| Face Width | See variant options |
| Weight (per piece) | See variant options |
All three options maintain a 1:1 ratio, so the choice affects the physical size and torque capacity rather than the speed ratio. A 20-tooth gear has a smaller pitch diameter and is more compact, while a 30-tooth gear has a larger pitch diameter and can distribute load across more teeth, which is useful in higher-torque applications. Match the tooth count to your available space and load requirements, and ensure both mating gears share the same tooth count.
No. For a 1:1 miter configuration, both gears in the mesh must have the same tooth count and the same module (Module 2). Mixing tooth counts would change the gear ratio and cause improper meshing, leading to noise, vibration, and accelerated wear.
C45 steel offers a tensile strength typically in the range of 600–800 MPa before heat treatment. The black hardening process increases surface hardness, improving resistance to pitting and wear. These gears are suitable for moderate-to-high torque applications in light industrial and DIY machinery. For very high shock loads or continuous heavy-duty industrial use, consider alloy steel alternatives.
The black hardening finish provides a degree of surface protection against light moisture and oxidation. However, C45 steel is not stainless and is not intended for immersion in water or highly corrosive environments. For outdoor or wet applications, apply a compatible gear lubricant and consider periodic inspection. Stainless steel or plastic gears would be more appropriate for corrosive environments.
Measure your shaft diameter precisely with calipers. Select the bore size that matches your shaft — a bore that is too large will cause runout and vibration. The keyway dimension should match the key stock on your shaft. For example, an 8 mm keyway is typically paired with larger bore sizes (24 mm and above), while a 4 mm keyway suits smaller bores (10–12 mm). Refer to standard DIN 6885 keyway tables if you are unsure which keyway size corresponds to your shaft diameter.
These are 90° miter bevel gears, meaning the two shafts intersect at a right angle. This is the standard configuration for miter gears and is suitable for applications where you need to redirect rotational motion by 90° while maintaining the same speed and torque (1:1 ratio).
Yes, a bevel gear drive requires two mating gears. Because this is a 1:1 miter gear, both gears are identical — you can order two of the same variant (same tooth count and bore size) to form a complete pair. Multi-pack options (2, 3, 4, 5, or 10 pcs) are available to make this convenient.
