Custom Custom CNC Machined Spur Gears & Gear Shafts from China Factory - Quality Suppliers for Automotive Transmission Systems Supplier, Exporters
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
| 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
Capable of producing complex gear shafts where the pinion is integral to the shaft, increasing strength and reducing assembly parts.
Optimized tooth geometry and material selection ensure the gears can withstand high torque loads typical in automotive transmissions.
Advanced surface treatments (like Black Oxide or Zinc Plating) provide excellent corrosion resistance and extend component life.
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:
Transmission systems, starter motors, and drive trains.
Reduction gearboxes and conveyor systems.
Precision joint movements and power articulation.
Heavy-duty power transfer in tractors and harvesters.
Why Choose Shenzhen Sunmy Hardware?
Rapid Prototyping
From CAD drawing to physical sample in days to accelerate your R&D cycles.
Scalable Production
Flexible MOQ configurations supporting both low-volume pilot batches and high-volume runs.
Strict QC System
Equipped with advanced CMM and Gear Profile Testers to ensure every tooth strictly meets the spec.
Technical FAQ
Q1: What data do you need to provide a quote? +
Q2: What is your standard lead time for custom gear shafts? +
Q3: Can you provide material certifications and dimensional reports? +
Q4: What gear precision grades can you achieve? +
Q5: What heat treatment options are available for automotive applications? +
Q6: Can you manufacture integrated pinion shafts without separate keyways? +
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