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When your motion-control build demands reliable torque transfer in a compact footprint, a poorly matched worm gear set becomes the weakest link in the entire drivetrain. Engineers, robotics hobbyists, and automation makers who need a corrosion-resistant, dimensionally consistent worm gear set will find this 1 module stainless steel worm wheel gear and worm shaft combination purpose-built for the task.
This listing covers a complete range of 1 module (Mod 1) worm gears and matching worm shafts machined from stainless steel. Worm wheel gears are available in 15T, 20T, 25T, 30T, 35T, 40T, 50T, and 60T tooth counts; worm shafts are offered in A-Type and B-Type configurations. Bore diameters span 5 mm (0.197 in) to 12 mm (0.472 in), accommodating a wide range of motor and shaft sizes. Gear outer diameters scale with tooth count, typically ranging from approximately 17 mm (0.67 in) for 15T up to approximately 62 mm (2.44 in) for 60T.
Typical use cases include low-speed high-torque actuators for CNC axis drives, compact worm-drive gearboxes for robotic arm joints, motorized camera pan-tilt rigs requiring self-locking behavior, and conveyor indexing mechanisms in light industrial automation. The stainless steel construction makes these gears well-suited for environments with moisture exposure, such as food-adjacent equipment or outdoor robotics platforms.
| Module | 1 (Mod 1) |
|---|---|
| Material | Stainless Steel |
| Worm Wheel Tooth Counts | 15T, 20T, 25T, 30T, 35T, 40T, 50T, 60T |
| Worm Shaft Types | A-Type, B-Type |
| Bore Diameter Options | 5 mm / 6 mm / 8 mm / 10 mm / 12 mm |
| Worm Wheel Outer Diameter | See variant options |
| Worm Wheel Face Width | See variant options |
| Worm Shaft Length | See variant options |
| Pressure Angle | 20° |
| Surface Finish | Natural stainless (uncoated) |
| Quantity per Order | 1 PCS |
The gear ratio of a worm drive equals the number of teeth on the worm wheel divided by the number of starts on the worm shaft (typically 1 for single-start worms). A 15T worm wheel paired with a single-start worm gives a 15:1 ratio; a 60T wheel gives 60:1. Choose a higher tooth count for more torque and lower output speed, or a lower tooth count for faster output with less torque multiplication.
Stainless steel worm gears offer good tensile strength and are suitable for light-to-medium duty motorized applications such as robotics joints, camera rigs, and small actuators. For heavy industrial loads or continuous high-torque duty cycles, verify the specific load ratings against your application requirements. Contact us to confirm suitability for demanding use cases.
Yes. Stainless steel provides inherent oxidation and corrosion resistance without requiring additional plating or coating. These gears are well-suited for environments with moisture exposure, including outdoor robotics, marine-adjacent projects, and food-adjacent equipment where mild washdown conditions may occur. For highly aggressive chemical environments, confirm compatibility with your specific media.
Yes — all worm wheels and worm shafts in this listing share the same 1 module standard, so any worm wheel variant will mesh correctly with either the A-Type or B-Type worm shaft variant. Select your preferred tooth count and shaft type, then match the bore diameter to your motor or drive shaft.
A-Type and B-Type worm shafts differ in their shaft end geometry and overall length, which affects how they mount in a housing or bearing block. A-Type shafts typically feature a plain cylindrical end, while B-Type shafts may include a stepped or flanged profile. Review the product images for dimensional details, or contact us if you need specific dimensional drawings before ordering.
Measure your motor output shaft diameter with a caliper. Available bore sizes are 5 mm, 6 mm, 8 mm, 10 mm, and 12 mm. Select the bore that matches your shaft diameter exactly — a loose fit will require a setscrew or keyway arrangement, while an interference fit may require light pressing. If your shaft uses a key, confirm the gear hub has a compatible keyway or plan to use a setscrew.
Worm drives with a low lead angle (common in single-start, low-module worms) exhibit back-drive resistance, meaning the output shaft cannot easily back-drive the worm when no motor torque is applied. This is useful for holding a load in position without a separate brake. However, self-locking is not absolute and depends on friction conditions; do not rely on it as a safety-critical holding mechanism without independent verification.
