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When your drivetrain needs to turn a corner without losing torque, a mismatched or low-tolerance bevel gear becomes the weakest link in the system. These Module 1 brass miter gears are engineered for hobbyists, robotics builders, and CNC enthusiasts who need a reliable 90° direction change with a 1:1 speed ratio and zero compromise on dimensional accuracy.
Each gear is machined from solid brass, offering a combination of corrosion resistance, low friction, and machinability that steel cannot match at this scale. Available in four tooth counts — 15T, 20T, 25T, and 30T — with bore sizes ranging from 4 mm (0.16 in) to 12 mm (0.47 in), including keyway variants for positive shaft locking. Gears are sold individually or in matched 2-piece pairs for immediate 90° drive assembly.
Typical applications include small-scale CNC axis drives requiring a 90° bevel gear set, robotics joint mechanisms using module 1 miter gears, and custom DIY gearbox builds where a compact brass bevel gear pair keeps weight and noise low.
Machined from brass for inherent corrosion resistance, smooth meshing, and reduced noise compared to steel alternatives at this module size.
Precisely cut at a 45° pitch cone angle to deliver an exact 1:1 speed and torque ratio when two matching gears are meshed at 90°.
Choose from 15T, 20T, 25T, or 30T to match your torque capacity and physical envelope — larger tooth counts carry higher loads.
Bore sizes from 4 mm to 12 mm cover most small-shaft applications. Select keyway variants (3 mm or 4 mm) for positive, slip-free shaft engagement.
Order 1 pc for replacement or prototyping, or select 2 pcs to receive a ready-to-mesh matched pair for immediate 90° drive assembly.
Manufactured to Module 1 (m=1) metric gear standards, ensuring interchangeability with other m1 bevel gears and straightforward design integration.
| Gear Module | Module 1 (m = 1) |
|---|---|
| Gear Type | Bevel / Miter Gear |
| Shaft Angle | 90° |
| Speed Ratio | 1:1 |
| Pitch Cone Angle | 45° |
| Available Tooth Counts | 15T / 20T / 25T / 30T |
| Bore Size Options | 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm; 8 mm+3 mm keyway, 10 mm+4 mm keyway, 12 mm+4 mm keyway |
| Material | Brass |
| Finish | Natural brass (uncoated) |
| Outer Diameter (approx.) | See variant options |
| Face Width (approx.) | See variant options |
| Quantity per Order | 1 pcs or 2 pcs (select above) |
For compact, lightweight builds with lower torque demands, the 15T or 20T gears are ideal due to their smaller physical size. If you need higher load capacity or smoother operation at moderate speeds, the 25T or 30T options provide more tooth engagement and distribute force over a larger contact area. Match the tooth count on both gears — they must be identical for a 1:1 90° mesh.
No. These are miter gears designed for a 1:1 ratio, which requires both gears to have the same tooth count. Pairing different tooth counts would change the speed ratio and alter the pitch cone geometry, preventing proper mesh. If you need a ratio other than 1:1, you would need a standard bevel gear set with different tooth counts.
Select the bore size that matches your shaft diameter exactly. For example, if your motor shaft is 6 mm, choose the 6 mm bore variant. If you need a secure, non-slip connection — especially under reversing loads — choose a keyway variant (e.g., 8 mm + 3 mm keyway) and machine a matching keyway into your shaft. Plain bore variants can be secured with a set screw if the gear hub includes one.
Brass Module 1 bevel gears are well-suited for light-to-medium duty applications such as small CNC axis drives, robotic joints, and DIY gearboxes operating at low-to-moderate speeds and torques. For heavy industrial loads or high-speed continuous operation, steel bevel gears would be more appropriate. Contact us to confirm suitability if you have specific torque or RPM requirements.
Brass is naturally corrosion-resistant in most indoor environments and does not rust. For best performance and longevity, apply a light machine oil or grease to the tooth faces during assembly. This reduces friction, minimizes wear, and keeps operating noise low — particularly important in precision instrument or robotics applications.
A plain bore is a smooth cylindrical hole that fits over a shaft and is typically secured with a set screw or press fit. A keyway bore includes a rectangular slot machined into the bore wall; a matching key inserted between the shaft and gear prevents rotational slipping under load. Keyway variants are recommended for applications with reversing torque, high starting loads, or where precise angular positioning must be maintained.
Both options are available. Select "1 pcs" if you need a single gear for replacement or prototyping. Select "2 pcs" to receive a matched pair ready for immediate 90° drive assembly — both gears will be the same tooth count and bore size as specified in your variant selection.
