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When your motor drive system demands reliable torque transfer at a right angle, a mismatched or low-grade bevel gear set becomes the weakest link in the chain. Engineers, robotics builders, and CNC hobbyists who need repeatable, low-backlash 90° mesh will find these 1.5/2 modulus bevel gears a dependable solution sized for real-world loads.
Each set consists of a paired pinion and wheel gear machined from 45# medium-carbon steel, heat-treated for surface hardness. Available in modulus 1.5 (typically 15–20 mm pitch diameter range) and modulus 2 (typically 20–27 mm pitch diameter range), with tooth counts of 15T/30T, 16T/32T, 18T/36T, and 20T/40T — all maintaining a 1:2 gear ratio. Bore dimensions vary by size; see variant options for exact bore specs.
Typical use cases include DIY gearbox builds requiring a 90° shaft change, small CNC router axis drives, robotics joint actuators needing a compact 1:2 reduction bevel gear set, and light industrial conveyor corner drives where a metal motor bevel gear pair replaces worn plastic components.
Machined from 45# steel with surface hardening for wear resistance under sustained rotational loads — a step up from cast or sintered alternatives in the same size class.
Ground tooth profiles maintain a true 90° shaft intersection, reducing vibration and noise in right-angle drive applications compared to non-ground bevel gears.
All size variants deliver a consistent 1:2 speed reduction ratio (pinion to wheel), making torque calculations and system design straightforward for engineers and makers alike.
Each order includes both the pinion (driver) and the wheel (driven) gear as a factory-matched set, ensuring correct tooth contact pattern out of the box.
Choose from modulus 1.5 or 2, with four tooth-count combinations (15T/30T, 16T/32T, 18T/36T, 20T/40T) to match your torque, speed, and envelope requirements.
The steel surface treatment provides baseline protection against oxidation during storage and light-duty indoor operation; apply additional lubrication for extended service life.
| Material | 45# Medium-Carbon Steel |
|---|---|
| Modulus | 1.5 / 2 (see variant options) |
| Gear Ratio | 1:2 |
| Mesh Angle | 90° |
| Tooth Count (Pinion / Wheel) | 15T/30T, 16T/32T, 18T/36T, 20T/40T (see variant options) |
| Pitch Diameter Range (Mod 1.5) | Typically 22.5–30 mm (0.89–1.18 in) |
| Pitch Diameter Range (Mod 2) | Typically 30–40 mm (1.18–1.57 in) |
| Bore Diameter | See variant options |
| Surface Treatment | Oxidation-resistant finish |
| Packing Quantity | 1 pcs (single pair) / 5 pcs (5 pairs) |
| Application | Right-angle power transmission, robotics, CNC, DIY gearboxes |
Modulus determines the tooth size and load capacity. Modulus 1.5 gears are smaller and suited for lighter loads and compact builds (e.g., small robotics joints, hobby CNC). Modulus 2 gears have larger teeth, handle higher torque, and are better for more demanding drive applications. Match the modulus to your existing gear housing or mating gear specification.
Bore diameter varies by tooth count and modulus. Please check the variant detail page or contact us to confirm the exact bore size before ordering, especially if you need to match a specific motor shaft diameter.
These bevel gears are machined from 45# medium-carbon steel with surface hardening, making them suitable for intermittent to moderate continuous-duty applications at the torque levels typical of small electric motors. For heavy industrial continuous-duty use, verify the rated torque against your application load before installation.
The surface treatment provides basic oxidation resistance for indoor storage and operation. For humid or outdoor environments, we recommend applying a suitable gear lubricant or grease to the tooth contact surfaces and housing to extend service life and prevent rust.
No. Gears of different modulus values are not interchangeable — the tooth pitch and profile are incompatible. Always pair a modulus 1.5 pinion with a modulus 1.5 wheel, and a modulus 2 pinion with a modulus 2 wheel. Each listing supplies a matched pair of the same modulus.
The "1 pcs" option includes one matched bevel gear pair (pinion + wheel). The "5 pcs" option includes five matched pairs of the same size, offering a lower per-pair cost for prototyping batches, spare parts stocking, or small production runs.
Mount both gears on their respective shafts so the apex of each gear's pitch cone meets at the same point. Apply a thin coat of marking compound to the teeth, rotate under light load, and check that the contact pattern is centered on the tooth face. Adjust shaft positioning as needed before final tightening.
