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When your drivetrain needs to change direction without losing torque, a mismatched or imprecise bevel gear set becomes the weakest link in your build. Whether you're a robotics engineer, automation hobbyist, or mechanical DIYer, these bevel gear pairs deliver consistent 90° power transmission across a wide range of gear ratios — from compact 1:3 reductions all the way to 1:8 — so you can dial in exactly the speed and torque your project demands.
Each set consists of a matched pinion and ring gear pair machined from 45# medium-carbon steel, known for its balanced hardness and toughness. Tooth profiles follow standard metric module (Mod) specifications ranging from 0.8 to 3, with tooth counts spanning 13T to 160T. Gear outer diameters vary by module and tooth count — consult the variant selector for exact dimensions in your chosen configuration.
These bevel gear pairs are well-suited for right-angle gearbox assemblies in CNC router axis drives, RC vehicle differentials, and custom speed-reduction stages in maker projects requiring a compact 90° angle drive gear set with a precise gear ratio for torque multiplication.
Machined from 45# steel for a reliable balance of surface hardness and core toughness, resisting tooth deformation under sustained load in angle-drive applications.
Gear pairs are manufactured to a precise 90° shaft angle, enabling clean right-angle power transfer without shimming or angular correction in your gearbox housing.
Choose from gear ratios including 1:3, 1:4, 1:5, 1:6, 1:7, and 1:8 to match your torque multiplication and output speed requirements without custom machining.
Nine module sizes from 0.8 to 3 cover everything from fine-pitch miniature mechanisms to heavier-duty industrial-style drives, all within standard metric tooth profiles.
Every order ships as a pre-matched set — pinion and ring gear lapped to the same module and ratio — eliminating the guesswork of sourcing compatible mating gears separately.
Bores are left unfinished so you can machine or ream to your exact shaft diameter, keyway, or set-screw spec — giving you full control over the final fit in your assembly.
| Product Type | Straight Bevel Gear Pair (Pinion + Ring Gear) |
|---|---|
| Material | 45# Medium-Carbon Steel |
| Mesh Angle | 90° |
| Module (Mod) | 0.8 / 1 / 1.25 / 1.5 / 1.75 / 2 / 2.25 / 2.5 / 3 |
| Tooth Count (Pinion + Ring) | See variant options |
| Gear Ratio | 1:3 / 1:4 / 1:5 / 1:6 / 1:7 / 1:8 |
| Outer Diameter | See variant options |
| Bore Diameter | Unfinished — machine to shaft size |
| Tooth Profile | Standard Metric Module (straight bevel) |
| Surface Finish | Natural steel (uncoated) |
| Quantity per Order | 1 Pair (1 pinion + 1 ring gear) |
| Weight | See variant options |
Module (Mod) determines tooth size and load capacity. Smaller modules (0.8–1.25) suit light-duty or compact mechanisms such as instrument drives and small robotics. Larger modules (2–3) handle heavier torque loads in power transmission and automation equipment. Match the module to the torque and space constraints of your application — both the pinion and ring gear must share the same module.
The gear ratio determines how much the output speed is reduced (and torque multiplied) relative to the input. A 1:3 ratio triples the torque while reducing speed to one-third. Higher ratios like 1:6 or 1:8 provide greater torque multiplication at lower output speeds. Select based on your motor's RPM and the output speed or torque your application requires.
These gears are machined from 45# medium-carbon steel, which provides a solid balance of surface hardness and core toughness for intermittent to moderate continuous-duty applications such as robotics, automation rigs, and DIY gearboxes. For high-cycle industrial applications with heavy shock loads, consider specifying a hardened or alloy steel grade.
The gears are supplied with a natural steel finish and are not coated or plated. For corrosion resistance in humid or outdoor environments, apply a light machine oil or grease during assembly and re-lubricate periodically. If long-term corrosion resistance is critical, consider applying a zinc-phosphate coating or storing in a dry environment.
The bore is left unfinished (blank bore) so you can machine or ream it to your exact shaft diameter, add a keyway, or drill and tap for a set screw. This gives you full flexibility to fit the gear to your specific shaft size. If you need a pre-bored option, contact us with your shaft diameter before ordering.
Each order ships as a pre-matched pair. Mixing gears from different orders is not recommended unless both share the identical module, tooth count, and pressure angle — even small manufacturing tolerances between batches can affect mesh quality and noise. For best results, always use the pinion and ring gear supplied together as a set.
These gear pairs are commonly used in right-angle gearbox assemblies, CNC axis drives, RC vehicle differentials, conveyor direction-change mechanisms, custom speed reducers, and maker/robotics projects requiring a compact 90° angle drive. They are not intended for high-speed spindle applications or environments with continuous exposure to liquids.
