1 Modulus 15-60T Brass Worm Wheel Gear Pitch 3.14mm Transmission Gear,Worm Rod

The tooth count of the worm wheel determines the gear ratio when paired with a single-start worm rod. For example, a 30-tooth wheel with a 1-start worm gives a 30:1 reduction ratio. Choose a higher tooth count for more torque and lower output speed, or a lower tooth count for faster output with less torque multiplication. Match your selection to your motor speed and required output torque.

Select the bore diameter that matches your motor shaft or drive shaft diameter. Available bore sizes for the worm wheel are 5 mm, 6 mm, 8 mm, 10 mm, and 12 mm. For the worm rod, bore options are 5 mm, 6 mm, 8 mm, and 10 mm. If your shaft is metric, measure it directly with calipers before ordering. A bore that is too large will require a set screw or keyway adapter.

Yes, at typical lead angles for a 1-modulus single-start worm, the drive is inherently self-locking — meaning the output shaft cannot back-drive the worm rod under static load. This makes it suitable for applications like camera pan-tilt heads, lifting mechanisms, and positioning stages where holding position without power is required. Note that self-locking behavior can be reduced at very high speeds or with lubrication that significantly lowers friction.

B-Type worm rods have a shorter overall length and are suited for compact drive assemblies where axial space is limited. L-Type worm rods are longer, providing more engagement length and are better suited for applications requiring higher load capacity or where the rod must span a wider housing. Check your housing dimensions before selecting a rod type.

Brass worm wheels are well-suited for light to moderate loads in robotics, automation, and DIY applications. Brass offers good machinability, natural lubricity against steel worm rods, and adequate corrosion resistance in typical indoor environments. For heavy industrial loads or continuous high-torque operation, consider consulting a mechanical engineer to verify the gear's rated load capacity against your application requirements.

For best performance and longevity, applying a light gear grease or worm gear oil to the mesh contact area is recommended, especially under continuous or high-cycle operation. Brass-on-steel worm drives have some inherent lubricity, but lubrication reduces heat buildup and wear at the tooth contact zone. For intermittent or low-speed DIY use, dry operation is possible but will reduce service life over time.

Yes. This gear set follows the 1-modulus standard, which means the worm wheel is dimensionally compatible with other 1-modulus worm rods and drive components that share the same pitch (3.14 mm) and pressure angle (20°). Always verify the module, pitch, and pressure angle of any mating component before assembly to ensure proper mesh and load sharing.