Mod 1.5 Worm Gear Wheel Brass 22 Tooth Worm Shaft Steel C45 Bore 8 mm - 15 mm

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Mod 1.5 Worm Gear Wheel Brass 22 Tooth Worm Shaft Steel C45 Bore 8 mm - 15 mm

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By HomeDIYer®

Types: 1.5 Mod - 22 Teeth Worm Gear

Bore: 8 mm

Material & Amount: Brass & 1 PCS

Price:

$45.55 USD

Stock:

In stock (500 units), ready to be shipped

Quantity:

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Mod 1.5 Worm Gear Set — Brass Wheel & C45 Steel Shaft for Reliable Speed Reduction

When your project demands a compact, low-backlash speed-reduction solution and you can't afford slop or noise, finding a matched worm gear set with the right bore and keyway can be a real headache. Engineers, robotics builders, and small-batch manufacturers who need a drop-in Mod 1.5 worm drive will find this set covers the most common shaft sizes in one listing.

This listing includes two component types sold separately or together: a 22-tooth worm gear wheel machined from brass, and worm shafts (A-type, B-type, or C-type) machined from C45 medium-carbon steel. The gear wheel bore ranges from 8 mm to 15 mm (approx. 0.31″–0.59″); optional keyway cuts are available in 3×1.4 mm, 4×1.8 mm, and 5×2.3 mm profiles. Quantities of 1, 2, 3, 5, or 10 pieces are available per variant.

Typical use cases include DIY rotary indexing tables requiring a Mod 1.5 worm drive, small conveyor or actuator builds needing a brass worm gear wheel with keyway bore, and robotics joint assemblies where a matched C45 steel worm shaft and brass wheel reduce backlash in compact enclosures.

⚙️ Compatibility: Designed for Mod 1.5 (Module 1.5) worm drive systems. Gear wheel and worm shaft must share the same module to mesh correctly. Verify bore diameter and keyway dimensions against your shaft before ordering.

✅ Key Features of These Mod 1.5 Worm Gear Sets

🟡Brass Worm Gear Wheel — 22 Teeth: The wheel is machined from brass, offering good corrosion resistance, low friction against steel, and quiet meshing — well-suited for moderate-load, low-speed applications.
🔩C45 Steel Worm Shafts (A / B / C Type): Three shaft configurations cover different overall lengths and thread engagement zones, letting you match the shaft to your housing depth without custom machining.
📐Bore Range 8–15 mm with Optional Keyway: Plain bores (8, 10, 12, 14, 15 mm) and keyed bores (3×1.4 mm, 4×1.8 mm, 5×2.3 mm) are available, enabling positive torque transmission without set-screw slippage.
📦Flexible Pack Quantities (1–10 PCS): Order a single piece for prototyping or up to 10 pieces for small-batch production — all from the same variant selector, with per-unit pricing that scales with quantity.
🔄Matched Mod 1.5 Module: Wheel and shaft share the same Mod 1.5 specification, ensuring correct tooth geometry, proper contact ratio, and predictable gear ratio (typically 22:1 when paired with a single-start worm).
🛠️Ready for Direct Assembly: Bores are finished to standard tolerances; keyway slots are cut to DIN 6885 proportions, compatible with standard parallel keys available from most fastener suppliers.

📐 Technical Specifications — Mod 1.5 Worm Gear Set

Module	1.5
Gear Type	Worm Gear Wheel + Worm Shaft (sold as matched set or individually)
Number of Teeth (Wheel)	22
Gear Ratio (single-start worm)	22:1
Wheel Material	Brass
Shaft Material	C45 Medium-Carbon Steel
Shaft Types Available	A-Type, B-Type, C-Type
Bore Diameter Range	8 mm / 10 mm / 12 mm / 14 mm / 15 mm (0.31″–0.59″)
Keyway Options	Plain bore; 3×1.4 mm; 4×1.8 mm; 5×2.3 mm
Pressure Angle	See variant options
Lead Angle	See variant options
Overall Shaft Length	See variant options
Pack Quantity	1 / 2 / 3 / 5 / 10 PCS
Surface Finish	Machined, natural (no coating)

❓ Frequently Asked Questions

How do I choose between the A-Type, B-Type, and C-Type worm shaft?

The A, B, and C designations refer to different overall shaft lengths and thread (worm) engagement zone positions. A-Type is the shortest configuration, B-Type is mid-length, and C-Type is the longest. Choose based on the axial depth of your housing and where the worm needs to sit relative to bearings or couplings. If you are unsure, measure your housing bore depth and compare it to the shaft drawings, or contact us to confirm before ordering.

What gear ratio does this worm set produce?

The worm gear wheel has 22 teeth. When paired with a single-start worm shaft (one thread start), the gear ratio is 22:1 — meaning the output shaft turns once for every 22 revolutions of the worm. This ratio is fixed by the tooth count and cannot be changed without replacing the wheel.

Can I use the brass wheel with a steel shaft in a wet or outdoor environment?

Brass has moderate corrosion resistance and performs well in dry or lightly humid indoor environments. The C45 steel shaft is susceptible to surface rust if exposed to moisture without lubrication or protective coating. For outdoor or wet environments, we recommend applying a suitable gear grease and considering a sealed housing. If long-term corrosion resistance is critical, contact us to discuss alternative material options.

What keyway standard do the keyed bores follow?

The keyway slots are proportioned to DIN 6885 (parallel key) dimensions: 3×1.4 mm for 8 mm bore, 4×1.8 mm for 10–12 mm bore, and 5×2.3 mm for 14–15 mm bore. Standard parallel keys (feather keys) of the matching size are widely available from fastener suppliers and are not included with this product.

Is the brass wheel compatible with other Mod 1.5 worm shafts I already have?

Yes — as long as your existing worm shaft is also Mod 1.5 and the pressure angle matches (typically 20°), the brass wheel will mesh correctly. Module and pressure angle must both match for proper tooth engagement. If you are sourcing the shaft separately, verify both parameters before assembly.

How do I select the right bore size and quantity?

Use the Types selector to choose the component (worm gear wheel or worm shaft type), the Bore selector to match your shaft or housing diameter (with or without keyway), and the Material & Amount selector to choose material and pack quantity (1, 2, 3, 5, or 10 PCS). If you need a bore size not listed, contact us before ordering.

What load capacity can this Mod 1.5 worm set handle?

Mod 1.5 worm gears are suited for light-to-moderate torque applications. Brass wheels are softer than steel and will wear preferentially against the steel shaft — this is intentional, as the wheel is the sacrificial component. Exact load ratings depend on operating speed, lubrication, and duty cycle. For high-cycle or high-torque applications, consult a mechanical engineer to verify suitability.

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