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When your build demands a reliable right-angle power transfer and off-the-shelf gears keep letting you down, these bevel transmission gears are the answer. Designed for engineers, makers, and hands-on DIYers who need repeatable, low-backlash 90° mesh in compact assemblies — from desktop CNC routers to custom robotic joints.
Each gear is machined to metric module standards (0.5 / 1 / 1.25 / 1.5 / 2 Mod) with tooth counts ranging from 12 to 40 teeth and bore diameters spanning 5 mm (≈0.20 in) to 25 mm (≈0.98 in). The 90° pitch-cone angle enables direct shaft-to-shaft power transmission without additional bevel housings in most configurations.
Typical use cases include right-angle drive systems in 3D printer Z-axis assemblies, bevel-gear differentials for RC and robotics platforms, and manual indexing heads on small milling machines — anywhere a compact 90° gear mesh replaces a bulky gearbox.
Available in 0.5, 1, 1.25, 1.5, and 2 Mod — covering a wide range of torque and speed requirements in a single product listing.
Bore sizes from 5 mm to 25 mm (≈0.20–0.98 in) accommodate common shaft diameters used in hobby, semi-industrial, and DIY applications.
Pitch-cone geometry is machined for a precise 90° shaft intersection, enabling direct right-angle power transfer with minimal alignment adjustment.
Select from 12, 15, 16, 18, 20, 25, 30, or 40 teeth to dial in your desired gear ratio for speed reduction or torque multiplication.
Manufactured from metal alloy stock (material grade: see variant options) for durability under continuous rotational load in mechanical assemblies.
Order as 1 PCS or 2 PCS per variant — convenient for prototyping a single axis or purchasing a matched bevel pair in one transaction.
| Gear Type | Straight Bevel Gear |
|---|---|
| Mesh Angle | 90° |
| Module (Mod) | 0.5 / 1 / 1.25 / 1.5 / 2 |
| Number of Teeth | 12 / 15 / 16 / 18 / 20 / 25 / 30 / 40 |
| Bore Diameter | 5 / 6 / 7 / 8 / 10 / 12 / 14 / 15 / 16 / 17 / 18 / 19 / 20 / 22 / 24 / 25 mm |
| Material | See variant options |
| Surface Finish | See variant options |
| Quantity per Order | 1 PCS or 2 PCS (select via Gear Bore & Amount option) |
| Weight | See variant options |
| Tooth Profile | Straight (non-spiral) bevel |
| Pitch Cone Angle | 45° (for 1:1 ratio pairs); varies for non-equal pairs |
The module (Mod) determines the tooth size and load capacity. Smaller modules (0.5, 1) suit light-duty, high-speed applications such as robotics and instrumentation. Larger modules (1.5, 2) handle higher torque in semi-industrial or CNC setups. Match the module of the bevel gear to the module of its mating gear — mismatched modules will not mesh correctly.
The gear ratio equals the number of teeth on the driven gear divided by the number of teeth on the driving gear. For example, pairing a 20-tooth gear with a 40-tooth gear gives a 2:1 reduction. For a 1:1 ratio (equal speed, direction change only), pair two gears with the same tooth count. All ratios are achievable within the available tooth counts (12–40 teeth) as long as both gears share the same module.
Load capacity depends on the module, tooth count, material, and operating speed. Larger modules and higher tooth counts generally support greater torque. For precise load ratings, contact us with your RPM, torque, and duty-cycle requirements so we can confirm suitability for your application.
Corrosion resistance depends on the material and surface finish of the specific variant. If your application involves moisture, chemicals, or outdoor exposure, contact us to confirm the material grade and whether a coated or stainless variant is available for your required module and tooth count.
Measure your shaft diameter with a caliper and select the matching bore size from the "Gear Bore & Amount" option. Available bores range from 5 mm to 25 mm. The bore should be a close fit to your shaft — if you need a keyway or set-screw hole, verify this is included or contact us before ordering.
Bevel gears always work in mating pairs. If you already have one gear and need its match, select the same module and a compatible tooth count. The "2 PCS" quantity option provides a matched pair in a single order — ideal for building a complete 90° drive without placing two separate orders.
These gears are well-suited for right-angle drive systems in 3D printers, CNC routers, robotic joints, RC vehicle differentials, manual indexing heads, and general DIY mechanical assemblies where a compact 90° power transfer is required. They are not recommended for high-shock or heavy-industrial applications without engineering verification.
