0.5M 52T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel
0.5M 52T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel
0.5M 52T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel
0.5M 52T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel
0.5M 52T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel
0.5M 52T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel
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0.5M 52T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel0.5M 52T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel0.5M 52T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel0.5M 52T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel0.5M 52T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel0.5M 52T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel

0.5M 52T Spur Gears Steel Pinion Gears Metal Spur Transmission Gear 45 Steel

HomeDIYer
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By HomeDIYer®

Price:
$5.33 USD
Stock:
In stock (500 units), ready to be shipped

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Description

0.5M 52T Steel Spur Gears — Reliable Pinion Transmission for Precision Motion Systems

When your DIY robot, RC drivetrain, or small automation project demands consistent torque transfer without slop or skipping, undersized or poorly machined gears become the weakest link. These 0.5M 52T spur gears are engineered for makers, hobbyists, and small-machine builders who need dependable metal pinion gears that hold tight tolerances across repeated cycles.

Each gear is machined from 45# carbon steel, offering a solid balance of hardness and machinability. The module is 0.5M with 52 teeth, and bore options range from 6mm to 12mm (approximately 0.24" to 0.47") to suit a variety of shaft diameters. Outside diameter is approximately 26.5mm (~1.04"). Available in quantities from 1 to 30 pieces per order.

These 0.5M steel spur gears are well-suited for RC car gear trains, small servo-driven mechanisms, 3D printer extruder assemblies, and light-duty conveyor or indexing systems where a compact metal spur transmission gear is required.

⚙️ Compatibility: Fits shafts of 6mm, 8mm, 10mm, or 12mm diameter. Module 0.5M — meshes with any other 0.5M module spur gear. Verify bore and keyway requirements before ordering.

✅ Key Features of These 0.5M 52T 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, 52 Teeth

Standard 0.5M pitch ensures direct mesh compatibility with any other 0.5M module gear in your drivetrain — no custom adapters needed.

🎯
Multiple Bore Sizes

Choose from 6mm, 8mm, 10mm, or 12mm bore to match your shaft diameter precisely, minimizing runout and backlash in your assembly.

📦
Flexible Quantity Options

Order from 1 to 30 pieces per variant — ideal for prototyping single units or stocking spares for production runs and repair kits.

⚡
Compact Pinion Profile

With an outside diameter of approximately 26.5mm (~1.04"), these pinion gears fit into tight chassis and enclosure designs where space is at a premium.

🔄
Smooth Spur Tooth Geometry

Straight-cut spur tooth profile delivers efficient power transmission with low noise at moderate speeds — suitable for most hobby and light industrial motion applications.

📐 Technical Specifications — 0.5M Spur Gears

Module 0.5M
Number of Teeth 52T
Material 45# Carbon Steel
Bore Diameter 6mm / 8mm / 10mm / 12mm (see variant options)
Outside Diameter Approx. 26.5mm (~1.04")
Tooth Profile Straight-cut spur
Pressure Angle 20°
Finish See variant options
Quantity per Order 1 / 5 / 10 / 15 / 20 / 25 / 30 pcs (see variant options)
Weight (per piece) See variant options

❓ Frequently Asked Questions

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

Measure your shaft diameter with a caliper. Select the bore option that matches: 6mm, 8mm, 10mm, or 12mm. The bore should be a close sliding fit on the shaft — not loose. If your shaft uses a keyway or set screw, confirm the gear hub depth is sufficient before ordering.

Will these gears mesh with my existing 0.5M gears?

Yes. Any two gears of the same module (0.5M) and pressure angle (20°) will mesh correctly regardless of tooth count. These 52T gears will pair with 0.5M pinions of any tooth count in your drivetrain.

What is the outside diameter of the 52T 0.5M gear?

The outside diameter (OD) of a 0.5M 52T spur gear is calculated as (Teeth + 2) × Module = 54 × 0.5 = 27mm nominal. Actual machined OD is approximately 26.5mm (~1.04") due to manufacturing tolerances. Always verify with your own caliper on receipt.

How strong are 45# steel spur gears compared to plastic or aluminum?

45# carbon steel is significantly harder and more fatigue-resistant than nylon or acetal plastic gears, and stronger than most aluminum alloys used in hobby gears. It is well-suited for moderate-load, moderate-speed applications. For very high-speed or high-torque industrial use, consider hardened or alloy steel alternatives.

Are these gears corrosion resistant?

45# carbon steel has moderate corrosion resistance. For outdoor or humid environments, apply a light machine oil or grease to the gear teeth and bore after installation. If corrosion resistance is a primary requirement, consider stainless steel or plastic gear alternatives.

Can I use these in a 3D printer extruder or RC car?

Yes. 0.5M module gears are commonly used in compact RC car gear trains, small robot joints, and some extruder drive systems. Confirm the bore matches your motor shaft and that the 52T tooth count gives you the gear ratio you need for your application.

Why should I order multiple pieces at once?

Ordering in packs of 5, 10, or more reduces the per-unit cost and ensures you have spares on hand for repairs or iterative prototyping. Bulk quantities are especially useful for production runs of small machines or robotics kits.

🛒 Select your Teeth–Bore size and quantity above, then add to cart.

 

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