0.5M 34T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel
0.5M 34T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel
0.5M 34T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel
0.5M 34T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel
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0.5M 34T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel0.5M 34T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel0.5M 34T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel0.5M 34T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel

0.5M 34T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel

HomeDIYer
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By HomeDIYer®

Price:
$4.15 USD
Stock:
In stock (500 units), ready to be shipped

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Description

0.5M 34T Steel Spur Gear — Reliable Pinion Gear for Precision Drive Systems

When a stripped or undersized gear brings your project to a halt, you need a replacement you can trust. These 0.5M 34T spur gears are designed for makers, roboticists, and mechanical engineers who demand consistent tooth engagement and dimensional accuracy in compact drive trains. Whether you're rebuilding a gearbox or prototyping a new mechanism, these pinion gears deliver repeatable performance run after run.

Each gear is machined from 45# carbon steel, offering a solid balance of hardness and machinability. The module is 0.5 (metric), with 34 teeth and a bore diameter of either 6 mm (~0.236 in) or 8 mm (~0.315 in). Outside diameter is approximately 17.5 mm (~0.689 in), and face width is typically 5–8 mm (~0.197–0.315 in). Pressure angle follows the standard 20° involute profile.

Typical use cases include RC car transmission rebuilds requiring a 0.5 module spur gear replacement, small robot joint actuators needing a 34-tooth steel pinion gear, and DIY CNC or automation projects using compact metal spur gear drives.

⚙️ Compatibility: Fits any 0.5 module (Mod 0.5) gear system with a 20° pressure angle. Bore options: 6 mm or 8 mm. Verify shaft diameter before ordering.

✅ Key Features of These 0.5M 34T Steel Spur Gears

🔩
45# Carbon Steel Construction

Machined from 45# carbon steel for a reliable combination of surface hardness and core toughness, reducing wear under sustained load.

📐
Standard 0.5 Module, 34 Teeth

Follows the metric Mod 0.5 standard with a 20° pressure angle involute profile, ensuring direct interchangeability with other 0.5M gears in your system.

🎯
Dual Bore Options: 6 mm & 8 mm

Available with a 6 mm or 8 mm center bore to match common motor and shaft diameters used in RC, robotics, and small automation builds.

🛡️
Corrosion-Resistant Finish

Surface treatment helps resist oxidation in workshop and indoor environments, extending service life compared to bare steel alternatives.

📦
Flexible Quantity Packs

Order from 1 to 50 pieces per pack — ideal for single-unit prototyping or stocking spares for production runs and repair kits.

⚡
Low Backlash Tooth Profile

Precision-cut involute teeth minimize backlash and noise, making these gears suitable for position-sensitive applications like robotic arms and servo-driven mechanisms.

📐 Technical Specifications — 0.5M Spur Gear

Module 0.5 (Metric)
Number of Teeth 34T
Pressure Angle 20°
Bore Diameter 6 mm / 8 mm (see variant options)
Outside Diameter Approx. 17.5 mm (~0.689 in)
Face Width Typically 5–8 mm (~0.197–0.315 in)
Material 45# Carbon Steel
Finish See variant options
Gear Type External Spur Gear
Tooth Form Involute
Available Quantities 1 / 3 / 5 / 10 / 15 / 20 / 30 / 40 / 50 pcs

❓ Frequently Asked Questions

How do I choose between the 6 mm and 8 mm bore?

Measure your motor shaft or drive shaft diameter with calipers. Select the 6 mm bore for shafts up to 6 mm and the 8 mm bore for shafts up to 8 mm. If your shaft is slightly undersized, a set screw or keyway adapter can secure the fit.

Is 45# carbon steel strong enough for my application?

45# carbon steel (equivalent to AISI 1045) offers a tensile strength of approximately 600–800 MPa in its normalized state. It is well-suited for moderate-load applications such as RC drivetrains, small robotic joints, and light automation. For very high-torque or impact-heavy environments, consider a hardened or alloy steel gear.

Will these gears rust or corrode?

The gears feature a surface treatment that provides basic oxidation resistance for indoor and workshop use. They are not rated for continuous outdoor exposure or wet environments. Applying a light machine oil or grease during installation will further extend service life.

Are these compatible with plastic or nylon 0.5M gears?

Yes. As long as the mating gear shares the same module (0.5M) and pressure angle (20°), steel and plastic/nylon gears mesh correctly. Note that pairing a steel gear with a softer material will cause the softer gear to wear faster — this is sometimes intentional to protect more expensive components.

How many gears should I order for a project?

For a single prototype or repair, the 1-piece or 3-piece pack is ideal. If you're building multiple units or want spares on hand, the 10- or 20-piece packs offer better per-unit value. Production runs or classroom/lab kits benefit most from the 30–50 piece packs.

What is the pitch diameter of a 0.5M 34T gear?

Pitch diameter = Module × Number of Teeth = 0.5 × 34 = 17 mm (~0.669 in). Outside diameter adds one full module (1 mm) to the pitch diameter, giving approximately 18 mm. Use these values when calculating center distances for meshing gear pairs.

Can I use these gears in a 3D-printed gearbox?

Yes. These steel spur gears are a popular upgrade for 3D-printed gearboxes where printed plastic teeth wear quickly. Ensure your gearbox housing is dimensioned for a 0.5M gear with the correct center distance, and that the bore aligns with your motor shaft size.

🛒 Select your Teeth - Bore(mm) and Qty(pcs) above, then add to cart.

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