1.5 Mod 80 Teeth Spur Gears Transmission Gear With Step 45# Steel Blackening
1.5 Mod 80 Teeth Spur Gears Transmission Gear With Step 45# Steel Blackening
1.5 Mod 80 Teeth Spur Gears Transmission Gear With Step 45# Steel Blackening
1.5 Mod 80 Teeth Spur Gears Transmission Gear With Step 45# Steel Blackening
1.5 Mod 80 Teeth Spur Gears Transmission Gear With Step 45# Steel Blackening
1.5 Mod 80 Teeth Spur Gears Transmission Gear With Step 45# Steel Blackening
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1.5 Mod 80 Teeth Spur Gears Transmission Gear With Step 45# Steel Blackening1.5 Mod 80 Teeth Spur Gears Transmission Gear With Step 45# Steel Blackening1.5 Mod 80 Teeth Spur Gears Transmission Gear With Step 45# Steel Blackening1.5 Mod 80 Teeth Spur Gears Transmission Gear With Step 45# Steel Blackening1.5 Mod 80 Teeth Spur Gears Transmission Gear With Step 45# Steel Blackening1.5 Mod 80 Teeth Spur Gears Transmission Gear With Step 45# Steel Blackening

1.5 Mod 80 Teeth Spur Gears Transmission Gear With Step 45# Steel Blackening

HomeDIYer
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By HomeDIYer®

Price:
$190.66 USD
Stock:
In stock (500 units), ready to be shipped

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Description

1.5 Mod 80-Tooth Stepped Spur Gear — Precision Transmission for DIY Automation Builds

When your motion system demands exact tooth engagement and a secure shaft fit, a poorly dimensioned gear becomes the weakest link in the entire drivetrain. Makers, robotics builders, and CNC hobbyists who need a reliable 1.5 module 80-tooth spur gear with a machined step will find this component ready to drop into demanding transmission assemblies without rework.

This spur gear is machined from 45# carbon steel and finished with a blackening (oxide) surface treatment for corrosion resistance and reduced light reflection. The module is 1.5M with 80 teeth, a step hub depth of 50 mm, and a tooth thickness of 15 mm. Bore options range from 8 mm (0.31 in) to 25 mm (0.98 in), including plain round bores and keyed bores (5×2.3 mm, 6×2.8 mm, and 8×3.3 mm keyways) to suit a wide range of shaft diameters.

Typical use cases include DIY conveyor belt drives requiring a 1.5 mod stepped spur gear, open-frame CNC router axis transmission assemblies, and custom robotic arm joint reduction stages where a blackened steel spur gear minimises glare under work lighting.

⚙️ Compatibility: Designed for 1.5 module gear systems. Mates with any standard 1.5M rack, pinion, or mating gear. Verify bore diameter and keyway dimensions against your shaft before ordering.

✅ Key Features of These 1.5 Mod 80-Tooth Stepped Spur Gears

🔩
45# Carbon Steel Construction

Machined from medium-carbon 45# steel for a balance of toughness and machinability, suitable for moderate-to-high load transmission applications.

🖤
Blackening Surface Treatment

Oxide blackening provides a layer of corrosion resistance and a matte finish that reduces reflectivity — useful in optical or precision environments.

📐
Stepped Hub Design (Step 50, Tooth Thickness 15)

The integrated step hub (depth 50 mm) allows secure axial positioning on the shaft without additional spacers, simplifying assembly in tight enclosures.

🔄
Wide Bore Range — Round & Keyed Options

Available in plain round bores from 8 mm to 25 mm and keyed bores (5×2.3 mm, 6×2.8 mm, 8×3.3 mm keyways) to match standard shaft-key combinations.

⚡
Standard 1.5 Module Tooth Profile

Conforms to standard 1.5M involute tooth geometry, ensuring smooth meshing with any compatible 1.5 module rack or mating gear in your drivetrain.

🛠️
Ready for DIY & Maker Builds

Sized and finished for direct installation in open-frame CNC machines, conveyor drives, robotic joints, and other maker automation projects.

📐 Technical Specifications — 1.5 Module Spur Gear

Module 1.5M
Number of Teeth 80T
Tooth Thickness 15 mm
Step Hub Depth 50 mm
Pitch Diameter 120 mm (Module × Teeth = 1.5 × 80)
Pressure Angle 20° (standard involute)
Material 45# Carbon Steel
Surface Treatment Blackening (Oxide)
Bore Diameter See variant options (8–25 mm round; keyed options available)
Keyway Dimensions See variant options (5×2.3 mm / 6×2.8 mm / 8×3.3 mm)
Overall Weight See variant options
Packing Quantity 1 pc per order

❓ Frequently Asked Questions

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

Measure your shaft diameter with a caliper. Select the matching plain round bore (e.g., 10 mm, 12 mm, 15 mm) or a keyed bore if your shaft has a keyway. For keyed shafts, match the keyway width and depth — options include 5×2.3 mm, 6×2.8 mm, and 8×3.3 mm. When in doubt, choose the bore that matches your shaft exactly; do not use an oversized bore without a bushing.

What load can this spur gear handle?

This gear is machined from 45# carbon steel, which offers a tensile strength of approximately 600–800 MPa depending on heat treatment. It is suitable for moderate-to-high torque transmission in DIY automation, conveyor, and robotics applications. For precise load ratings, calculate based on your RPM, torque, and duty cycle using standard gear design formulas (AGMA or ISO 6336).

Does the blackening treatment prevent rust?

The oxide blackening layer provides a degree of corrosion resistance in dry or mildly humid indoor environments. For outdoor use or high-humidity conditions, we recommend applying a light coat of machine oil or grease to the gear surface after installation to extend service life.

Will this gear mesh with my existing 1.5 module rack or pinion?

Yes — this gear uses a standard 1.5M involute tooth profile with a 20° pressure angle, which is compatible with any standard 1.5 module rack, pinion, or mating spur gear of the same module and pressure angle. Always verify the module and pressure angle of your existing components before ordering.

What is the pitch diameter of this gear?

The pitch diameter is calculated as Module × Number of Teeth = 1.5 × 80 = 120 mm. The outer (tip) diameter will be approximately 123 mm (pitch diameter + 2 × module). Use these dimensions to verify clearance in your housing or frame before installation.

Can I use this gear in a vertical orientation or overhead drive?

Yes. The stepped hub design allows secure axial retention on the shaft, making it suitable for vertical or overhead installations. Ensure the set screw or keyway is properly torqued and consider adding a retaining ring or collar for additional axial security in high-vibration environments.

Is one piece included per order, and can I order multiple?

Each order includes 1 piece (1 pcs packing quantity). To order multiple gears, simply increase the quantity in your cart. All pieces are from the same production batch, ensuring consistent dimensions and surface finish across your build.

🛒 Select your bore size and model above, then add to cart.

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