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When your build demands a clean right-angle drive with zero compromise on torque transfer, a mismatched or worn bevel gear is the first thing that fails. Engineers, robotics builders, and serious DIYers working on CNC machines, conveyor systems, or custom gearboxes need a bevel gear pair they can trust to mesh perfectly from day one. These 2 module, 1:1 ratio bevel gears are machined to consistent tolerances, making them a dependable drop-in for both prototype and production applications.
Each gear is machined from steel, offering a balance of strength and machinability suited to moderate-to-high load drives. The 2 module specification defines the tooth size, with an outer diameter that scales with tooth count — approximately 54 mm (2.13 in) for the 25-tooth variant and approximately 64 mm (2.52 in) for the 30-tooth variant. Bore diameters range from 10 mm to 28 mm (0.39 in to 1.10 in) across the available size options, covering the most common shaft sizes used in DIY and light industrial applications.
Typical use cases include right-angle shaft drives in desktop CNC routers, bevel gear sets for robotics joint mechanisms, and 1:1 speed-ratio power transmission in custom automation rigs. Long-tail applications such as "2 module bevel gear pair for CNC", "90 degree gear drive DIY", and "steel bevel gear 25 tooth bore 16mm" are all served by this range.
| Module | 2 |
|---|---|
| Transmission Ratio | 1:1 |
| Tooth Count Options | 25T / 30T |
| Pressure Angle | See variant options |
| Outer Diameter (25T) | Approx. 54 mm (2.13 in) |
| Outer Diameter (30T) | Approx. 64 mm (2.52 in) |
| Bore Diameter Range | 10 mm – 28 mm (0.39 in – 1.10 in) |
| Material | Steel |
| Finish | See variant options |
| Shaft Angle | 90° |
| Weight | See variant options |
| Quantity per Order | 1 pc (single gear) |
Both maintain a 1:1 ratio when paired with an identical gear. The 25T variant has a smaller outer diameter (~54 mm) and suits compact builds with tighter space constraints. The 30T variant (~64 mm OD) distributes load across more teeth, which can reduce wear in higher-torque or continuous-duty applications. Choose based on your available space and load requirements.
Yes. Each listing sells a single gear (1 pc). For a functional 1:1 right-angle drive, you need two identical gears — one for each shaft. Select the same size (tooth count and bore) for both, or choose different bore sizes if your two shafts have different diameters.
Select the bore diameter that matches your shaft diameter exactly. Available bores range from 10 mm to 28 mm. If your shaft is metric (e.g., 12 mm, 16 mm, 20 mm), choose the matching bore. For a secure fit, a keyway or set screw is typically used — confirm your shaft and hub arrangement before ordering.
Module 2 bevel gears with the same tooth count and pressure angle will generally mesh correctly. However, minor differences in pressure angle or tooth geometry between manufacturers can affect mesh quality. For critical applications, it is advisable to use a matched pair from the same production batch.
Steel construction provides solid load-bearing capacity for DIY, robotics, and light industrial drives. Exact torque ratings depend on operating speed, lubrication, and alignment. For heavy industrial or continuous high-speed applications, consult a mechanical engineer to verify suitability. These gears are well-suited for moderate-duty intermittent and continuous drives at typical DIY and automation speeds.
Yes, lubrication is recommended for all metal bevel gear pairs to reduce wear and noise. A light gear grease or oil applied to the tooth contact surfaces at installation — and periodically during service — will extend gear life significantly. The frequency depends on load, speed, and operating environment.
Standard steel gears are not inherently corrosion-resistant. For outdoor, humid, or washdown environments, apply a protective lubricant or grease to exposed surfaces. If corrosion resistance is a primary requirement, consider stainless steel or plastic bevel gear alternatives for your application.
