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When a misaligned drive shaft kills your project timeline, the culprit is almost always an undersized or poorly matched gear set. Engineers, robotics builders, and hands-on DIYers who need reliable 90° power redirection without custom machining will find this paired bevel gear set a direct solution — sold as a matched pair, ready to mesh straight out of the box.
Each set consists of two C45 medium-carbon steel bevel gears machined to a 1.5 modulus with a fixed 1:2 tooth ratio (pinion + wheel). Available tooth combinations range from 15T+30T to 20T+40T, covering shaft diameters typically from 6 mm to 12 mm (approx. 0.24″ to 0.47″). The 90° mesh angle is held to standard bevel gear geometry for smooth, low-backlash engagement.
Typical applications include DIY gearbox builds requiring a 2:1 speed reduction, small CNC axis drives needing a right-angle transmission, and robotics joint assemblies where compact 90° torque transfer is critical. Long-tail use cases: replacement bevel gear set for RC crawler differentials, custom lathe cross-slide drives, and educational gear-train demonstration kits.
Sold as a pinion + wheel set in a fixed 1:2 tooth ratio — no separate sourcing or pairing guesswork required.
Standard bevel geometry ensures correct tooth contact and smooth torque transfer between perpendicular shafts.
Consistent modulus across the pair guarantees proper mesh depth and minimizes backlash in your drive train.
C45 steel offers a solid balance of machinability and load-bearing strength, suitable for moderate-duty mechanical drives.
Choose from 15T+30T, 16T+32T, 18T+36T, or 20T+40T combinations to match your shaft size and torque requirements.
Fits DIY gearboxes, robotics joints, CNC axis drives, and educational gear-train assemblies requiring a 2:1 reduction at 90°.
| Modulus | 1.5 |
|---|---|
| Gear Ratio | 1:2 |
| Mesh Angle | 90° |
| Material | C45 Medium-Carbon Steel |
| Tooth Combinations | 15T+30T / 16T+32T / 18T+36T / 20T+40T |
| Bore Diameter | See variant options |
| Keyway | See variant options |
| Surface Finish | See variant options |
| Quantity per Set | 1 Pair (Pinion + Wheel) |
| Weight per Set | See variant options |
Select based on your required shaft diameter and available space. Larger tooth counts (e.g., 20T+40T) generally suit larger shaft bores and higher torque loads, while smaller counts (15T+30T) fit compact assemblies. All options maintain the same 1:2 ratio and 1.5 modulus — check the bore diameter spec for your specific variant before ordering.
C45 steel bevel gears at 1.5 modulus are rated for moderate-duty applications. Exact load ratings depend on tooth count, RPM, and lubrication conditions. For heavy industrial loads or continuous high-speed operation, consult an engineer to verify suitability. These are well-suited for DIY machinery, robotics, and light-to-medium mechanical drives.
C45 steel is not inherently corrosion-resistant. For outdoor or humid environments, apply a light machine oil or grease coating during installation and re-lubricate periodically. If corrosion resistance is a primary requirement, consider stainless steel alternatives.
Yes — as long as the mating gear shares the same modulus (1.5), the same 90° pressure angle geometry, and a compatible tooth count for your desired ratio. Always verify the pitch cone angle and bore dimensions match your existing assembly before mixing gear sets from different sources.
Bore dimensions vary by variant — check the specific tooth count option you select for the pre-machined bore size. Many variants come with a standard bore that may require a keyway or set-screw modification to fit your shaft. If your shaft diameter differs, a local machine shop can bore to size.
Both maintain the same 1:2 gear ratio and 1.5 modulus. The 20T+40T set has physically larger gears, which typically means a larger bore diameter, greater tooth contact area, and higher torque capacity. The 15T+30T set is more compact and lighter — ideal for space-constrained builds. Choose based on your shaft size and torque requirements.
Yes, lubrication is recommended for all metal bevel gear applications. A light gear oil (ISO VG 68–150) or lithium-based grease applied to the tooth flanks at installation will reduce wear and noise. Re-lubricate at regular service intervals based on your duty cycle.
