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When your project demands a reliable right-angle drive — whether you're building a CNC axis, a robotic joint, or a custom gearbox — mismatched or imprecise bevel gears cause backlash, noise, and premature wear. These 1.5 modulus bevel gears are engineered for makers, mechanical engineers, and DIY builders who need accurate 90° torque transfer without compromise.
Each set consists of a matched 15T pinion gear and a 30T ring gear forming a 1:2 ratio pair, machined from steel for durability. Bore options range from 5 mm (0.20 in) to 15 mm (0.59 in), covering the most common shaft diameters used in hobby and light-industrial applications. The 1.5 modulus tooth profile ensures smooth meshing and consistent load distribution across the gear face.
Typical use cases include right-angle gearbox assemblies for CNC router Z-axes, servo-driven robotic arm joints requiring 1:2 speed reduction, and custom differential drive mechanisms in RC vehicles or automation rigs. Long-tail search terms like "1.5 mod 90 degree bevel gear pair" and "15T 30T steel bevel gear set" reflect exactly what this product delivers.
Pinion and ring gear are matched at a precise 90° shaft angle, enabling clean right-angle power transmission with minimal backlash in your drivetrain.
The 15T/30T tooth count pairing delivers a fixed 1:2 ratio — ideal for torque multiplication in servo-driven or motor-driven mechanical assemblies.
Six bore sizes (5, 6, 8, 10, 12, 15 mm) accommodate the most common shaft diameters used in hobby motors, stepper shafts, and light-industrial drives.
Machined from steel, these gears handle continuous rotational loads without deforming under torque — suitable for both intermittent and sustained drive cycles.
The 1.5 mod tooth geometry provides a balance between tooth strength and compact gear diameter, fitting tightly spaced mechanical enclosures without sacrificing load capacity.
Pinion (15T) and ring gear (30T) are supplied together as a pre-matched set, eliminating the guesswork of sourcing compatible mating gears separately.
| Modulus | 1.5 |
|---|---|
| Tooth Count (Pinion / Ring) | 15T / 30T |
| Gear Ratio | 1:2 |
| Shaft Angle | 90° |
| Bore Diameter Options | 5 mm / 6 mm / 8 mm / 10 mm / 12 mm / 15 mm |
| Material | Steel |
| Pitch Diameter (15T) | 22.5 mm (0.89 in) |
| Pitch Diameter (30T) | 45 mm (1.77 in) |
| Pressure Angle | See variant options |
| Face Width | See variant options |
| Surface Finish | See variant options |
| Quantity per Set | 1 pair (1× 15T + 1× 30T) |
Measure your motor or drive shaft diameter with a caliper. Select the bore option that matches exactly — for example, a NEMA 17 stepper typically uses a 5 mm shaft, while larger servo motors often use 8–12 mm shafts. A bore that is too large will require a setscrew or keyway adapter to prevent slipping.
They are sold as a matched pair. Each order includes one 15T pinion gear and one 30T ring gear, pre-matched for 90° mesh. You do not need to purchase them separately.
The 15T/30T pairing produces a 1:2 ratio — for every two rotations of the input (pinion) shaft, the output (ring gear) shaft completes one rotation. This halves the speed and doubles the torque at the output, which is useful for servo-driven joints or motor-driven axes where you need more torque at lower RPM.
These gears are machined from steel, which provides good mechanical strength but has moderate corrosion resistance. For outdoor or high-humidity applications, we recommend applying a light machine oil or grease coating, or considering a stainless steel alternative if long-term corrosion resistance is critical.
Exact torque and RPM ratings depend on the specific bore variant, lubrication, and operating conditions. As a general guideline for 1.5 modulus steel bevel gears of this size, they are suited for light-to-medium duty applications — typically hobby CNC, robotics, and small automation rigs. Contact us to confirm suitability for high-load or high-speed applications.
These gears are designed and matched as a 1:2 pair. While the 1.5 modulus tooth profile is a standard, mixing with gears from different manufacturers may result in mesh errors or backlash due to slight variations in pressure angle and tooth geometry. For best results, use the matched pair as supplied.
These 1.5 modulus bevel gears are well-suited for CNC machine right-angle drives, robotic arm joints, RC vehicle differentials, custom gearbox assemblies, and any DIY mechanical project requiring a 90° change in shaft direction with a 1:2 speed reduction.
