1.5 Mod 60 Teeth Spur Gears Transmission Gear With Step 45# Steel Blackening

Measure your shaft diameter with a caliper. For a plain round bore, select the bore size that matches your shaft diameter exactly (e.g., 12 mm shaft → 12 mm bore). For a keyed shaft, select the keyway bore option that matches your shaft's key slot dimensions — for example, a 14 mm shaft with a 5×2.3 mm key slot would use the "14/5×2.3 mm" bore variant. If your shaft is metric and falls between listed sizes, contact us to confirm the closest fit.

The step number refers to the hub step height in millimeters — the raised cylindrical boss that extends from the gear face. Step 50 has the tallest hub (50 mm) with a tooth thickness of 15 mm, while Step 40 and Step 45 have shorter hubs with a tooth thickness of 12 mm. A taller step allows the gear to be positioned further along the shaft or to clear adjacent components in tight assemblies. Choose based on your gearbox housing depth and axial clearance requirements.

The chemical blackening (black oxide) treatment provides moderate corrosion resistance suitable for indoor, dry, or lightly oiled environments. It is not equivalent to zinc plating or stainless steel in humid or outdoor conditions. For applications exposed to moisture, we recommend applying a light coat of machine oil or grease to the gear surface after installation to extend service life.

Any spur or helical gear with a matching module of 1.5 and the same pressure angle (20°) will mesh correctly. The number of teeth on the mating gear determines the gear ratio — for example, pairing this 60T gear with a 20T pinion gives a 3:1 reduction ratio. Ensure both gears share the same module; mixing modules (e.g., Mod 1.5 with Mod 2) will result in incorrect meshing and rapid wear.

This gear is machined from 45# carbon steel, which is suitable for moderate-load, moderate-speed applications typical of DIY automation, light machinery, and robotics. For high-torque industrial drives or continuous high-speed operation, consider whether additional heat treatment (e.g., quenching and tempering) or a higher-grade alloy steel gear is required for your specific load and duty cycle. Contact us to confirm suitability for your application.

Yes — the 2-piece packing quantity option contains two identical gears of the same model and bore specification. This is useful when you need a matched pair for parallel shaft drives, want a spare on hand, or are building a symmetric drive system. The per-unit price is slightly lower in the 2-piece pack compared to buying two 1-piece packs separately.

Key dimensions to verify: (1) Outer diameter ~93 mm — ensure your housing has at least 93 mm of clearance diameter. (2) Step height (40/45/50 mm) — confirm this fits within your housing depth. (3) Bore diameter — match to your shaft. (4) Tooth thickness (12 or 15 mm) — ensure adequate face width engagement with the mating gear. If you have a technical drawing of your gearbox, compare these values before ordering.