Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
When your project demands a reliable 90° power transfer and off-the-shelf gears just don't fit, you need a bevel gear that's dimensionally consistent and tough enough to handle repeated load cycles. These 20-tooth metal bevel gears are designed for makers, robotics enthusiasts, RC builders, and mechanical model hobbyists who need precise right-angle drive transmission without custom machining.
Each set contains 2 pieces of 20T (20-tooth) bevel gears with an 8mm bore diameter, manufactured to Modulus 1 (M1) specification. The gears are machined from metal (typically steel or zinc alloy, depending on variant) with a tooth profile optimized for smooth meshing at 90°. Overall gear outer diameter is typically 22–24mm (~0.87–0.94 in), with a face width of approximately 8–12mm (~0.31–0.47 in).
Typical use cases include DIY robotic arm joints requiring right-angle torque redirection, RC car differential and steering assemblies, and mechanical scale model transmissions where compact 90° drives are essential for authentic motion replication.
| Number of Teeth | 20T (20 teeth) |
|---|---|
| Bore Diameter | 8mm (0.31 in) |
| Module (Modulus) | M1 (Modulus 1) |
| Drive Angle | 90° (right angle bevel) |
| Gear Ratio (pair) | 1:1 |
| Outer Diameter | Typically 22–24mm (~0.87–0.94 in) |
| Face Width | Typically 8–12mm (~0.31–0.47 in) |
| Material | See variant options |
| Finish / Coating | See variant options |
| Quantity per Order | 2 pieces (1 matched pair) |
| Pressure Angle | 20° |
| Application | DIY robotics, RC models, mechanical scale models |
These gears have an 8mm bore diameter, designed to fit standard 8mm round shafts. If your motor or drive shaft is a different diameter, you will need a bushing or a different bore size variant. Always measure your shaft before ordering.
For a functional 90° right-angle drive, you need a matched pair — one gear on each shaft. This listing includes 2 pieces, giving you a complete bevel gear set. Both gears are 20T M1, so they mesh together at a 1:1 ratio.
Yes. These gears follow the standard Modulus 1 (M1) tooth profile, which means they will mesh correctly with any other M1 20T bevel gear of the same pressure angle (20°). Always confirm the module and tooth count match before mixing gear brands.
Metal bevel gears offer significantly better load capacity and wear resistance than plastic equivalents. They are well-suited for light-to-medium duty robotics, RC drivetrains, and model mechanisms. For heavy industrial torque loads, consult the specific material variant and verify torque ratings against your application requirements.
Corrosion resistance depends on the material variant. Steel gears may benefit from a light coating of machine oil for long-term storage or outdoor use. Zinc alloy variants offer moderate natural corrosion resistance. For high-humidity or wet environments, periodic lubrication is recommended.
The module (M) defines the tooth size — M1 means 1mm per tooth pitch diameter unit. M1 gears have smaller, finer teeth compared to M2 or M3. They are ideal for compact, low-to-medium torque applications like hobby robotics and scale models. Gears of different modules cannot mesh together.
Yes. The compact M1 20T bevel gear dimensions make them a popular choice for 3D-printed robot frames and mechanical model kits. Ensure your printed gear housing is designed for an 8mm shaft bore and allows proper gear mesh clearance for smooth operation.
