0.8 Module 1:20-60 Reduction Ratio Gear Copper Worm Wheel Gear & Worm Gear Shaft

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0.8 Module 1:20-60 Reduction Ratio Gear Copper Worm Wheel Gear & Worm Gear Shaft

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By HomeDIYer®

Types: Worm Gear 0.8M20T

Bore: 5mm

Material & Amount (Pcs): Brass & 1

Price:

$11.41 USD

Stock:

In stock (500 units), ready to be shipped

Quantity:

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0.8 Module Worm Gear Set — Precise Reduction Drive for Robotics & Automation

When your project demands a compact, high-reduction drive that fits tight spaces without sacrificing torque, a mismatched or low-tolerance worm gear set becomes the weakest link in your build. Engineers, robotics hobbyists, and small-batch manufacturers who need reliable 1:20–1:60 reduction ratios in a single mesh will find this 0.8 module worm gear set a dependable solution.

This set pairs a brass worm wheel gear with a stainless steel worm rod (A-Type, B-Type, or L-Type), all machined to 0.8 module (metric). Worm wheels are available in 20T, 25T, 30T, 35T, 40T, 50T, and 60T tooth counts, with bore diameters ranging from 5 mm (~0.197 in) to 12 mm (~0.472 in). Worm rods are offered with 5 mm, 6 mm, and 8 mm shaft bores, or without a bore hole (L-Type).

Typical use cases include DIY pan-tilt camera rigs requiring smooth, self-locking rotation; small robotic arm joints where a compact worm gear reduction drive eliminates backlash; and light-duty conveyor or indexing table builds where a brass worm wheel and stainless worm shaft combination resists wear over extended cycles.

⚙️ Compatibility: Designed for 0.8 module (metric) worm gear systems. Worm wheel and worm rod must share the same module (0.8M) and lead angle for correct mesh. Verify bore diameter matches your shaft before ordering.

✅ Key Features of These 0.8 Module Worm Gear Sets

🔩Brass Worm Wheel, 7 Tooth Counts — Worm wheels available in 20T, 25T, 30T, 35T, 40T, 50T, and 60T, covering reduction ratios from 1:20 to 1:60 in a single compact mesh.
🛡️Stainless Steel Worm Rods — A-Type, B-Type, and L-Type worm rods machined from stainless steel for corrosion resistance and long service life in humid or outdoor-adjacent environments.
📐0.8 Module Metric Standard — Machined to 0.8M metric module for consistent tooth profile and reliable mesh with any standard 0.8 module mating component.
🎯Multiple Bore Options — Worm wheels offered in 5 mm, 6 mm, 8 mm, 10 mm, and 12 mm bore diameters; worm rods in 5 mm, 6 mm, 8 mm, or without hole — covering a wide range of motor and shaft sizes.
🔄Self-Locking Drive Geometry — The worm gear geometry provides inherent self-locking at low lead angles, preventing back-driving under load — useful for positioning and holding applications.
🏭Suitable for Robotics, Automation & DIY Builds — Sized for small-format drive systems including robotic joints, pan-tilt mechanisms, indexing tables, and light-duty conveyor drives.

📐 Technical Specifications — 0.8 Module Worm Gear Set

Module	0.8M (metric)
Worm Wheel Material	Brass
Worm Rod Material	Stainless Steel
Worm Wheel Tooth Counts	20T, 25T, 30T, 35T, 40T, 50T, 60T
Reduction Ratio Range	1:20 – 1:60
Worm Wheel Bore Diameter	5 mm / 6 mm / 8 mm / 10 mm / 12 mm
Worm Rod Type	A-Type, B-Type, L-Type (with or without bore)
Worm Rod Bore Diameter	5 mm / 6 mm / 8 mm / Without hole
Worm Wheel Outer Diameter	See variant options
Worm Wheel Face Width	See variant options
Worm Rod Length	See variant options
Pressure Angle	20°
Quantity per Order	1 piece (gear or rod, per selection)
Finish	Natural brass (wheel) / Brushed stainless (rod)

❓ Frequently Asked Questions

How do I choose the right tooth count (20T, 25T, 30T…) for my project?

The tooth count of the worm wheel equals the reduction ratio when paired with a single-start worm rod. A 20T wheel gives a 1:20 reduction, a 40T wheel gives 1:40, and so on. Choose a higher tooth count for more torque and slower output speed; choose a lower tooth count for faster output with less torque multiplication.

Can I buy just the worm wheel or just the worm rod separately?

Yes. The variant selector lets you choose the worm wheel (brass, 20T–60T) or the worm rod (stainless steel, A-Type / B-Type / L-Type) independently. You can purchase either component on its own or combine them in a single order.

What is the difference between A-Type, B-Type, and L-Type worm rods?

A-Type and B-Type worm rods differ in their shaft end geometry — A-Type typically has a plain shaft end while B-Type may include a keyway or stepped profile for easier coupling. L-Type is a longer rod variant offered without a bore hole, suitable for custom machining or through-shaft applications. Check the product images for dimensional details of each type.

Are these worm gears self-locking? Will the load back-drive the motor?

At the 0.8 module and typical lead angles used in this series, the worm gear geometry provides inherent self-locking behavior under static load — meaning the output shaft cannot back-drive the worm rod when the motor is unpowered. This makes them well-suited for positioning, holding, and lifting applications where you do not want the load to creep.

How do I match the bore diameter to my motor shaft?

Measure your motor or drive shaft diameter with a caliper. Select the bore option that matches: 5 mm, 6 mm, 8 mm, 10 mm, or 12 mm for worm wheels; 5 mm, 6 mm, or 8 mm for worm rods. If your shaft is slightly undersized, a set screw or locking collar can compensate. Do not select a bore smaller than your shaft diameter.

Are the brass worm wheels corrosion-resistant for outdoor or humid environments?

Brass offers moderate corrosion resistance and performs well in indoor and lightly humid environments. For more demanding outdoor or wet conditions, the stainless steel worm rods provide better corrosion resistance. If the worm wheel will be exposed to moisture long-term, consider applying a light gear lubricant to extend service life.

What lubricant should I use with these worm gears?

A light gear oil or white lithium grease applied to the worm thread and wheel teeth is recommended for smooth operation and reduced wear. Avoid dry running, especially under load, as brass-on-steel contact without lubrication will accelerate wear on the wheel teeth.

Are these compatible with other 0.8 module gears from different brands?

Yes, provided the mating component is also machined to 0.8 module metric standard with a matching pressure angle (20°). Module is a standardized metric specification, so any correctly manufactured 0.8M worm gear component should mesh correctly with these parts.

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