Mod 1.5 Worm Gear Wheel Brass 30 Tooth Worm Shaft 45# Steel Precision Ø 8-22 mm

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Mod 1.5 Worm Gear Wheel Brass 30 Tooth Worm Shaft 45# Steel Precision Ø 8-22 mm

Name: Mod 1.5 Worm Gear Wheel Brass 30 Tooth Worm Shaft 45# Steel Precision Ø 8-22 mm
Brand: HomeDIYer
Price: 72.2 USD
Availability: InStock

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By HomeDIYer®

Types: 1.5 Mod - 30 Teeth Worm Gear

Bore: 8 mm

Material & Amount: Brass & 1 PCS

Price:

$72.20 USD

Stock:

In stock (500 units), ready to be shipped

Quantity:

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

Engineers and makers working on compact drive systems often struggle to find matched worm gear sets that combine accurate tooth profiles with reliable bore sizing. This Mod 1.5 worm gear and worm shaft set is designed for DIY builders, robotics integrators, and small-batch machine designers who need a dependable, low-backlash worm drive without custom machining.

The set includes a 30-tooth worm gear wheel machined from brass and a paired worm shaft available in A-type, B-type, or C-type configurations machined from 45# carbon steel. Bore diameters range from 8 mm to 22 mm (approximately 0.31 in to 0.87 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 various shaft retention requirements. Module (Mod) is 1.5, giving a pitch that balances torque capacity with compact envelope size.

Typical use cases include DIY CNC axis drives, robotic joint actuators requiring high reduction ratios, conveyor indexing mechanisms, and motorized camera pan-tilt rigs. The brass gear / steel shaft pairing is a classic combination for Mod 1.5 worm gear applications where self-lubrication and wear resistance are priorities.

⚙️ Compatibility: Mod 1.5 standard. Matches any Mod 1.5 worm shaft or worm gear following DIN 3975 / ISO 1122 tooth geometry. 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

30-tooth brass gear provides natural lubricity against the steel shaft, reducing wear and operating noise in continuous-duty worm drive applications.

🔩 45# Carbon Steel Worm Shaft

A-type, B-type, and C-type shaft configurations in 45# carbon steel deliver the hardness and toughness needed to drive the brass gear under load without deformation.

📐 Wide Bore Range: 8–22 mm

Plain bore and keyway variants (3×1.4 mm up to 6×2.8 mm) accommodate a broad range of motor and gearbox output shafts from 8 mm to 22 mm (0.31–0.87 in).

🔄 Mod 1.5 Standard Tooth Profile

Manufactured to Mod 1.5 geometry for predictable meshing with any standard Mod 1.5 counterpart, enabling drop-in replacement or system expansion.

📦 Flexible Quantity Options

Available in 1, 2, 3, or 5-piece quantities per order, with per-unit pricing that scales for prototyping through small-batch production runs.

🛠️ Ready for Direct Assembly

Machined bores and keyways are finished to standard tolerances, allowing direct shaft insertion without additional boring or fitting in most applications.

📐 Technical Specifications — Mod 1.5 Worm Gear & Worm Shaft

Module (Mod)	1.5
Gear Type	Worm Gear Wheel (30 Teeth) / Worm Shaft (A, B, C Type)
Number of Teeth (Gear)	30
Gear Material	Brass
Shaft Material	45# Carbon Steel
Bore Diameter Range	8 mm – 22 mm (0.31 in – 0.87 in)
Keyway Options	Plain bore / 3×1.4 mm / 4×1.8 mm / 5×2.3 mm / 6×2.8 mm
Shaft Type Options	A Type, B Type, C Type
Available Quantities	1 PCS, 2 PCS, 3 PCS, 5 PCS
Weight	See variant options
Surface Finish	See variant options

❓ Frequently Asked Questions

How do I choose the right bore diameter for my shaft?

Measure your motor or gearbox output shaft diameter with a caliper. Select the bore option that matches your shaft size exactly. If your shaft uses a key for torque transmission, also match the keyway dimension (e.g., 4×1.8 mm for a 10 mm shaft with a standard DIN 6885 key). Plain bore variants are suitable for set-screw or press-fit retention.

What is the difference between A-type, B-type, and C-type worm shafts?

The A, B, and C type designations refer to the shaft end configuration and overall length of the worm rod. A-type typically has a shorter shaft extension, B-type has a longer extension suitable for coupling, and C-type offers an intermediate configuration. Check the variant images or contact us to confirm which type suits your mounting arrangement.

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

Mod 1.5 worm drives with a single-start worm shaft typically exhibit self-locking behavior, meaning the load cannot back-drive the worm. This makes them suitable for lifting, positioning, and indexing applications where holding position without a brake is required. Confirm the lead angle of your specific shaft type if self-locking is critical to your design.

What is the corrosion resistance of brass and 45# steel?

Brass offers moderate corrosion resistance and is suitable for indoor or lightly humid environments. 45# carbon steel has lower inherent corrosion resistance and should be kept lubricated or protected with a light oil film when used in environments with moisture exposure. For outdoor or wet applications, consider adding a protective coating after installation.

Is this set compatible with other Mod 1.5 gears from different brands?

Yes. Module (Mod) is an international standard. Any Mod 1.5 worm gear or worm shaft following standard tooth geometry will mesh correctly with this set, regardless of brand, as long as the pressure angle (typically 20°) matches. Always verify the pressure angle specification if mixing components from different sources.

How do I decide between brass gear and 45# steel shaft quantities?

For single-axis prototypes, 1 PCS of each is sufficient. For multi-axis builds or small production runs, ordering 2–5 PCS reduces per-unit cost and ensures you have spares on hand. The gear (brass) and shaft (steel) are sold as separate variant selections — choose the type and bore for each component independently.

What lubrication should I use for this worm gear set?

A light application of gear grease (NLGI #1 or #2) or worm gear oil applied to the mesh contact area is recommended for initial assembly. Re-lubricate periodically based on duty cycle. Avoid dry running, as it accelerates wear on both the brass gear and steel shaft surfaces.

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