Mod 1.5 Worm Gear Wheel Brass 40 Tooth Worm Shaft 45# Steel Precision Ø 8-20 mm

Roll over image to zoom in Click on image to zoom

Mod 1.5 Worm Gear Wheel Brass 40 Tooth Worm Shaft 45# Steel Precision Ø 8-20 mm

HomeDIYer

No reviews

By HomeDIYer®

Types: 1.5 Mod - 40 Teeth Worm Gear

Bore: 10 mm

Material & Amount: Brass & 1 PCS

Price:

$137.43 USD

Stock:

In stock (500 units), ready to be shipped

Quantity:

Share this product

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

DIY Expert Support

Get fitment advice & recommendations

Mon–Fri 8:30 AM – 8:00 PM

WhatsApp Email Us

24-Hour Fast Ship

Arrives in 3–14 Days

Worldwide Shipping

30-Day Returns

1 tree planted with every purchase

Mod 1.5 Worm Gear & Worm Shaft — Precision Drive Components for Robotics and Automation

When your motion control build demands reliable torque transfer and smooth speed reduction, mismatched or undersized gearing becomes the bottleneck. Engineers, robotics builders, and small-batch manufacturers working on conveyor systems, rotary actuators, and automated fixtures need worm drive components that hold tight tolerances across every cycle. This matched set of Mod 1.5 worm gear wheels and worm shafts is designed for exactly that workload.

The worm gear wheel is machined from brass with 40 teeth and a Module 1.5 tooth profile. The worm shafts are available in three configurations — A Type, B Type, and C Type — each turned from 45# carbon steel. Bore diameters range from 8 mm to 20 mm (approximately 0.31 in to 0.79 in), with plain bore and keyway options (3×1.4 mm, 4×1.8 mm, and 5×2.3 mm, 6×2.8 mm) to suit standard shaft fits.

Typical applications include low-speed high-torque rotary stages for CNC indexing tables, worm-drive actuators for robotic arm joints, and speed-reduction assemblies in automated packaging or conveyor equipment. The Mod 1.5 standard ensures interchangeability with other metric worm drive components in the same module class.

⚙️ Compatibility: Designed for Mod 1.5 (Module 1.5) worm drive systems. Worm gear wheel pairs with any Mod 1.5 single-start worm shaft. Verify bore diameter and keyway dimensions against your shaft before ordering.

✅ Key Features of These Mod 1.5 Worm Gear & Worm Shaft Components

🟡 Brass Worm Gear Wheel

40-tooth brass gear wheel with Mod 1.5 tooth profile. Brass construction provides low friction meshing against steel worm shafts and resists corrosion in lightly lubricated environments.

🔩 45# Carbon Steel Worm Shafts

A Type, B Type, and C Type shaft configurations machined from 45# carbon steel for strength and wear resistance. Each type offers a different shaft length and shoulder geometry to suit varied mounting arrangements.

📐 Wide Bore Range with Keyway Options

Bore diameters from 8 mm to 20 mm (0.31–0.79 in). Plain bore and keyway variants (3×1.4 mm up to 6×2.8 mm) available for positive torque transmission without set-screw slip.

🔄 Mod 1.5 Standard Tooth Profile

Metric Module 1.5 tooth geometry ensures dimensional interchangeability with other Mod 1.5 worm drive components. Consistent pitch and pressure angle for smooth, low-backlash engagement.

🏭 Suited for Robotics and Automation Builds

Matched gear-and-shaft sets are well-suited for CNC rotary tables, robotic joint actuators, conveyor speed reducers, and small-batch automated machinery requiring compact worm drive assemblies.

📦 Flexible Quantity Options

Available in 1 PCS or 2 PCS quantities per order. Mix gear wheel and worm shaft types to build complete drive assemblies or stock spares for ongoing production runs.

📐 Technical Specifications — Mod 1.5 Worm Gear & Worm Shaft

Module	1.5
Gear Wheel Teeth	40 Teeth
Gear Wheel Material	Brass
Worm Shaft Material	45# Carbon Steel
Worm Shaft Types	A Type, B Type, C Type
Bore Diameter Range	8 mm – 20 mm (0.31 in – 0.79 in)
Keyway Options	3×1.4 mm / 4×1.8 mm / 5×2.3 mm / 6×2.8 mm (see variant options)
Bore Type	Plain bore or keyed bore (see variant options)
Tooth Profile Standard	Metric Module (Mod 1.5)
Quantity per Order	1 PCS or 2 PCS (see variant options)
Gear Wheel OD (approx.)	See variant options
Shaft Length	See variant options

❓ Frequently Asked Questions

How do I choose between A Type, B Type, and C Type worm shafts?

The three shaft types differ in overall length and shoulder/step geometry. A Type is the shortest configuration, suited for compact housings. B Type offers a longer shaft with a stepped shoulder for bearing support on one end. C Type provides the longest shaft with shoulders on both ends for dual-bearing mounting. Select based on your housing design and bearing arrangement.

Will the Mod 1.5 worm gear wheel mesh with any Mod 1.5 worm shaft?

Yes. The Mod 1.5 tooth profile is a metric standard, so this gear wheel will mesh correctly with any single-start Mod 1.5 worm shaft of matching helix angle. The worm shafts listed in this product are designed to pair with this gear wheel. If using a third-party shaft, confirm the module, lead angle, and thread direction (right-hand) match.

Do I need a keyway, or is a plain bore sufficient?

For applications with moderate to high torque or reversing loads, a keyed bore is strongly recommended to prevent rotational slip between the shaft and gear. Plain bore variants are suitable for light-duty or low-torque applications where a set screw or interference fit is used. Check your torque requirements and shaft fit tolerance before selecting.

Is brass a suitable material for the worm gear wheel in my application?

Brass is the standard material for worm gear wheels paired with steel worm shafts. It provides a favorable friction pairing — the softer brass wears preferentially, protecting the harder steel shaft. Brass also offers good corrosion resistance in lightly lubricated or dry environments. It is well-suited for low-to-medium speed, moderate-torque applications typical of robotics and automation.

What bore diameter should I select for my shaft?

Select the bore diameter that matches your motor or gearbox output shaft diameter. Available bores range from 8 mm to 20 mm. If your shaft has a keyway, choose the matching keyed bore variant (e.g., 12 mm/4×1.8 mm keyway for a 12 mm shaft with a 4 mm wide, 1.8 mm deep keyway). Measure your shaft diameter precisely before ordering — bore-to-shaft clearance is typically H7/h6 for a standard sliding fit.

Can I use this worm gear set for a self-locking drive?

Worm drives with a low lead angle (typically below 5°) are self-locking, meaning the load cannot back-drive the worm shaft. Mod 1.5 single-start worm gears generally exhibit self-locking behavior, making them suitable for applications like lifting mechanisms or positioning stages where holding position without power is required. Confirm the specific lead angle of your shaft configuration if self-locking is a critical requirement.

Do I need to order the gear wheel and worm shaft separately?

Yes. The worm gear wheel (40 Teeth, Brass) and the worm shafts (A/B/C Type, 45# Steel) are listed as separate variant options within this product. Select your gear wheel variant and your worm shaft variant independently, or use the 2 PCS quantity option to stock multiples of the same component. A complete worm drive assembly requires one gear wheel and one matching worm shaft.

🛒 Select your Type, Bore, and Material & Amount above, then add to cart.