Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
When your build demands a reliable 90-degree power transfer without backlash headaches, finding a bevel gear that fits your shaft exactly is half the battle. Whether you are a robotics hobbyist, a CNC machine builder, or a mechanical engineering student assembling a custom gearbox, a mismatched bore or imprecise tooth profile can derail hours of work. These 2.5 module bevel gears are sized and machined to give makers and DIY engineers a drop-in solution for right-angle drive applications.
Each gear is machined from carbon steel, delivering the toughness needed for continuous rotational loads. The 2.5 module tooth profile ensures smooth meshing with a matched mating gear. Two tooth-count options are available — 20 teeth and 30 teeth — both in a 1:1 ratio configuration. Bore diameters span 12 mm (0.47 in) to 35 mm (1.38 in), covering the most common shaft sizes used in hobby and light-industrial drivetrains. Overall gear diameter ranges from approximately 55 mm (2.17 in) for the 20T variant to approximately 80 mm (3.15 in) for the 30T variant.
Typical use cases include right-angle gearbox assemblies for 3D printer Z-axis drives, custom conveyor corner drives, and small robotic arm joints requiring a compact 90-degree bevel gear set. The consistent 2.5 module pitch also makes these gears interchangeable with other standard metric bevel gears of the same module, simplifying sourcing for multi-stage drivetrain projects.
Machined to standard metric module 2.5 specifications, ensuring accurate meshing with any compatible mating gear and minimizing noise and wear during operation.
Engineered for a true 1:1 speed ratio at a right angle, making them ideal for direction-change applications where rotational speed must remain constant across the drive axis.
Available in bore diameters from 12 mm (0.47 in) to 35 mm (1.38 in), covering the most common shaft sizes used in hobby CNC, robotics, and light-industrial machinery.
Choose 20 teeth for a more compact gear envelope or 30 teeth for increased load-sharing capacity and smoother torque transmission in higher-duty applications.
Manufactured from carbon steel for a strong strength-to-weight ratio, suitable for continuous rotational loads in enclosed or lightly lubricated gearbox environments.
The 2.5 module standard is widely used in metric drivetrain design, so these gears integrate directly with other standard-module components without custom adaptation.
| Module | 2.5 |
|---|---|
| Gear Ratio | 1:1 |
| Pressure Angle | 20° |
| Tooth Count Options | 20T / 30T |
| Bore Diameter Range | 12 mm – 35 mm (0.47 in – 1.38 in) |
| Pitch Diameter (20T) | Approx. 50 mm (1.97 in) |
| Pitch Diameter (30T) | Approx. 75 mm (2.95 in) |
| Material | Carbon Steel |
| Finish | See variant options |
| Shaft Angle | 90° |
| Keyway | See variant options |
| Weight | See variant options |
The 20T gear has a smaller outer diameter and is suited for compact builds where space is limited. The 30T gear distributes load across more teeth, making it a better choice for applications with higher torque or where smoother, quieter operation is a priority. Both maintain the same 1:1 ratio and 2.5 module pitch.
Select the bore diameter that matches your shaft diameter exactly. Available bores range from 12 mm to 35 mm. If your shaft uses a keyway, check the variant options or contact us to confirm keyway dimensions before ordering.
Yes. A bevel gear pair requires two matching gears — one for each shaft. Both gears must share the same module (2.5) and tooth count for a 1:1 ratio. Each listing sells individual gears; order two of the same tooth count to assemble a complete right-angle drive.
Yes, provided the mating gear shares the same module (2.5), tooth count, and pressure angle (20°). The metric module standard is internationally consistent, so these gears will mesh correctly with any conforming 2.5 module bevel gear regardless of brand.
These carbon steel bevel gears are suited for light-to-medium duty applications such as robotics, hobby CNC machines, and small conveyor drives. Maximum torque capacity depends on tooth count, bore size, and operating speed. For high-cycle or heavy industrial loads, consult a mechanical engineer to verify suitability.
For best service life, apply a light gear grease or oil to the tooth contact surfaces during assembly. In enclosed gearbox applications, a splash-lubricated environment is ideal. In open or intermittent-use setups, periodic re-greasing will extend gear life and reduce noise.
Please double-check your shaft diameter before placing your order, as bore size is a fixed dimension that cannot be modified after machining. If you receive an incorrect item due to a fulfillment error, contact us and we will arrange an exchange. For sizing questions before purchase, reach out via the contact page.
