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When a motion-transmission project demands a reliable right-angle direction change, finding bevel gears that hold tight tolerances across both the pinion and wheel can be a real challenge. These stainless steel bevel gears are designed for engineers, robotics builders, CNC hobbyists, and mechanical DIYers who need a matched 90° 1:2 ratio pair that installs without guesswork.
Each gear is machined from stainless steel, offering solid corrosion resistance and structural rigidity. Available in two module sizes — 0.5 and 0.8 — with tooth counts of 20 (pinion) and 40 (wheel) to achieve the 1:2 speed-reduction ratio. Bore diameters range from 3 mm (≈0.118 in) to 12 mm (≈0.472 in), and you can order 1, 2, or 5 pieces per variant to match your build quantity.
Typical use cases include compact gearbox assemblies for desktop CNC routers, right-angle drive shafts in 3D-printer extruder mechanisms, and custom servo-driven robotic joints where a 90° bevel gear set for stainless steel shaft is required. The 0.5 module variant suits fine-pitch, low-torque linkages, while the 0.8 module handles moderate-load mechanical drives.
Machined from stainless steel for corrosion resistance and durability in both dry and mildly humid environments — suitable for long-term mechanical assemblies.
Engineered for a precise 90-degree shaft intersection, enabling clean right-angle power transmission without additional adapters or alignment fixtures.
The 20-tooth pinion paired with the 40-tooth wheel delivers a 1:2 gear ratio, halving output speed while doubling torque — ideal for servo and motor-driven mechanisms.
Choose 0.5 module for fine-pitch, compact drives or 0.8 module for moderate-load applications. Both modules are available in the same tooth-count pairing for consistent ratio performance.
Seven bore diameter options (3, 4, 5, 6, 8, 10, 12 mm) let you match the gear directly to your shaft without custom machining in most standard builds.
Order a single piece for prototyping, a pair for a complete drive assembly, or a 5-piece pack for batch builds and spare-part inventory — all from the same variant selector.
| Material | Stainless Steel |
|---|---|
| Gear Type | Bevel Gear |
| Mesh Angle | 90° |
| Gear Ratio | 1:2 (20T pinion : 40T wheel) |
| Module | 0.5 / 0.8 (see variant options) |
| Number of Teeth | 20 Teeth (pinion) / 40 Teeth (wheel) |
| Bore Diameter | 3 / 4 / 5 / 6 / 8 / 10 / 12 mm (see variant options) |
| Quantity per Order | 1 PCS / 2 PCS / 5 PCS (see variant options) |
| Surface Finish | See variant options |
| Outer Diameter | See variant options |
| Face Width | See variant options |
| Weight (per piece) | See variant options |
Module size determines tooth size and load capacity. The 0.5 module is suited for fine-pitch, low-torque applications such as small servo linkages or compact robotic joints. The 0.8 module has larger teeth and handles moderate mechanical loads more effectively. Both modules are available in the same 20T/40T pairing, so the ratio stays 1:2 regardless of which you choose.
Yes. For a complete 90° 1:2 bevel gear set, you need one 20-tooth pinion and one 40-tooth wheel in the same module. Make sure both gears share the same module (either both 0.5 or both 0.8) — mixing modules will result in incorrect mesh and the gears will not run together properly.
Measure your shaft diameter with a caliper and select the matching bore size from the variant options (3, 4, 5, 6, 8, 10, or 12 mm). The bore should be a close fit to your shaft — typically secured with a set screw or keyway on your shaft collar. If your shaft falls between sizes, choose the next size up and use a shaft sleeve or loctite for a secure fit.
Stainless steel provides good resistance to moisture and mild corrosion, making these gears suitable for indoor humid environments, light outdoor enclosures, and applications where occasional exposure to water or cleaning agents is expected. For highly corrosive or submerged environments, additional sealing or lubrication is recommended.
Exact torque ratings depend on module size, bore diameter, shaft support, and operating speed. As a general guide, 0.5 module gears are suited for light-duty drives (small motors, servos under ~1 Nm), while 0.8 module gears handle moderate loads. For precise load calculations, contact us with your application details and we can advise on suitability.
Yes. These bevel gears are commonly used in desktop CNC right-angle drives, robotic joint assemblies, and servo-driven mechanisms. Select the bore diameter that matches your motor shaft, ensure both gears are the same module, and mount them so the shafts intersect at 90° with proper center distance for the chosen module.
Each variant specifies the quantity of that individual gear (pinion or wheel) included. Order 1 PCS for a single prototype or replacement gear, 2 PCS if you need a spare or are building two assemblies, and 5 PCS for batch production or to maintain a spare-parts inventory. A complete working pair always requires one 20T and one 40T gear of the same module.
