0.5M 35T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel
0.5M 35T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel
0.5M 35T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel
0.5M 35T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel
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0.5M 35T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel0.5M 35T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel0.5M 35T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel0.5M 35T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel

0.5M 35T 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 35T Steel Spur Gears — Reliable Pinion Transmission for Precision Motion Control

When your drive train demands consistent torque transfer and tight mesh tolerances, undersized or poorly machined gears become the weakest link. These 0.5M 35T spur gears are engineered for makers, robotics builders, and mechanical hobbyists who need dependable power transmission without the guesswork of sourcing industrial surplus.

Each gear is machined from 45# carbon steel, offering a balance of hardness and machinability suited to light-to-medium duty applications. The module is 0.5 (metric), with 35 teeth and bore options of 6 mm (~0.236 in) or 8 mm (~0.315 in) to fit common motor and shaft diameters. Gear outer diameter is approximately 18.5 mm (~0.728 in), with a face width typically in the 5–8 mm range depending on variant.

Typical use cases include RC vehicle gearboxes requiring a compact 0.5 module pinion gear, small robotic arm joints needing a 35-tooth steel spur gear for torque multiplication, and DIY CNC or automation projects using metric module gear sets for smooth, low-backlash transmission.

⚙️ Compatibility: Designed for 0.5 module gear systems. Mates with any 0.5M rack, pinion, or mating spur gear. Bore sizes 6 mm and 8 mm fit standard motor shafts and hobby-grade drive axles.

✅ Key Features of These 0.5M 35T 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 repeated load cycles.

📐
0.5 Module, 35 Teeth

Standard metric 0.5M tooth profile ensures accurate mesh with any compatible 0.5 module gear, rack, or pinion in your drivetrain.

🎯
Dual Bore Options

Available in 6 mm and 8 mm bore diameters to match common motor shaft sizes used in RC, robotics, and small automation systems.

📦
Flexible Quantity Packs

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

⚡
Low Backlash Tooth Profile

Precision-cut involute tooth form minimizes backlash and noise, supporting smooth, efficient power transfer in compact gear trains.

🔄
Versatile Application Range

Suitable for RC car gearboxes, robotic joints, small conveyor drives, and DIY CNC axis drives requiring a compact metric spur gear.

📐 Technical Specifications — 0.5M Spur Gears

Module 0.5M (Metric)
Number of Teeth 35T
Material 45# Carbon Steel
Bore Diameter 6 mm / 8 mm (see variant options)
Outer Diameter (approx.) ~18.5 mm (~0.728 in)
Face Width See variant options
Pressure Angle 20°
Finish Natural steel (uncoated)
Gear Type Spur (straight tooth)
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 or drive shaft diameter. If your shaft is 6 mm, select the 35T-6mm variant. If your shaft is 8 mm, select 35T-8mm. Using a bore that is too large will cause the gear to slip; too small and it will not fit without machining.

What is the pressure angle of these spur gears?

These gears use a standard 20° pressure angle, which is the most common metric involute tooth form. They will mesh correctly with any other 0.5M, 20° pressure angle spur gear or rack.

Are these gears strong enough for RC car drivetrains?

Yes. 45# carbon steel provides adequate strength for light-to-medium duty RC and hobby applications. For high-torque brushless motor setups running sustained full-throttle loads, consider pairing with a compatible steel pinion and checking mesh alignment carefully to maximize gear life.

Will these gears rust or corrode over time?

The gears are supplied with a natural steel finish and are not coated or plated. For outdoor or humid environments, apply a light machine oil or grease to the tooth surfaces and bore to prevent surface oxidation and extend service life.

Can I use these with a 0.5M plastic gear or rack?

Yes, these steel spur gears are compatible with any 0.5 module mating gear regardless of material — plastic, nylon, brass, or steel — as long as the module and pressure angle match. Note that steel-on-plastic pairings will wear the plastic gear faster under heavy loads.

How many gears should I order for a project?

For prototyping, a 1- or 3-piece pack is sufficient to test fit and function. For small production runs or repair kits, the 10–20 piece packs offer better per-unit value. The 30–50 piece packs are suited for batch builds or stocking workshop spares.

What is the outer diameter of a 0.5M 35T spur gear?

The theoretical outer diameter (addendum circle) of a 0.5M 35T gear is calculated as (35 + 2) × 0.5 = 18.5 mm (~0.728 in). Actual machined dimensions may vary slightly; confirm with calipers before designing tight-clearance housings.

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

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