OEM Custom CNC Machined Spur Gears & Gear Shafts - Automotive Transmission Systems | China Suppliers & Factory Manufacturer, Factories
Product Description
Product Overview
Shenzhen Sunmy Hardware Co., Ltd. specializes in the precision manufacturing of high-performance Spur Gears and Gear Shafts (Pinion Shafts) designed specifically for automotive transmission systems and heavy-duty industrial applications.
Engineered for seamless power transmission, our gears are manufactured using advanced CNC machining and gear hobbing technologies. Whether you require standard modules (M0.5–M10) or fully customized geometries, Sunmy provides OEM/ODM solutions that ensure high torque capacity, low noise operation, and exceptional durability under stress.
Process & Manufacturing Insights
At Sunmy, we control the entire lifecycle of gear production to ensure strict adherence to DIN and ISO standards. Our manufacturing process includes:
Precision CNC Turning & Milling
Creating the accurate blank geometry and shaft features (keyways, set screw holes, steps) from raw bar stock.
Gear Hobbing & Shaping
Utilizing high-speed hobbing machines to cut precise tooth profiles with pressure angles of 20° (or custom).
Heat Treatment
Critical for automotive applications. We offer carburizing, induction hardening, and quenching to harden the teeth surface while maintaining a tough core.
Precision Grinding
Post-heat treatment gear grinding to achieve high precision grades (DIN 5 – DIN 7) and superior surface finish.
Key Specifications
| Attribute | Specification Details |
| Product Name | Custom Spur Gear & Pinion Gear Shaft |
| Material Options | Stainless Steel (303/304/316), Alloy Steel (20CrMnTi, 40Cr, 8620), Carbon Steel |
| Module Range | M0.5 – M10 |
| Pressure Angle | 20° Standard (Customizable) |
| Precision Grade | DIN 5, DIN 6, DIN 7, DIN 8, DIN 10 |
| Teeth Type | Straight Spur Teeth |
| Surface Treatment | Black Oxide, Zinc Plating, Carburizing, Nitriding, High-Frequency Quenching |
| Hub/Bore Config | With/Without Hub; Bore: Pilot, Finished, Keyway, or Set Screw |
| Origin | Manufactured by Sunmy (China) |
| Warranty | 6 Months (Standard) |
Key Features & Advantages
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Custom Engineering Capable of producing complex gear shafts where the pinion is integral to the shaft, increasing strength and reducing assembly parts.
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High Load Capacity Optimized tooth geometry and material selection ensure the gears can withstand high torque loads typical in automotive transmissions.
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Surface Durability Advanced surface treatments (like Black Oxide or Zinc Plating) provide excellent corrosion resistance and extend component life.
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Tight Tolerances We maintain strict control over bore sizes and concentricity, ensuring a perfect fit with bearings and mating gears.
Applications
These gears are not limited to just one sector. They are critical components for:
Why Choose Shenzhen Sunmy Hardware?
From CAD drawing to physical sample in days.
Flexible MOQ to support both pilot runs and mass production.
Equipped with CMM and Gear Profile Testers to ensure every tooth meets the spec.
Technical FAQ
We require a 2D drawing (PDF) or 3D model (STEP/IGES). If you do not have drawings, we can reverse-engineer from a physical sample.
Samples typically take 7–10 days. Mass production lead times vary (15–25 days) depending on quantity and heat treatment requirements.
Yes, all shipments from Sunmy include material mill certificates and final inspection reports.
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