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Help CenterSpur Helical Gear 42CrMo4 Nitrided 60-65HRC Module 2-12 for 3000rpm High Speed Applications
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As a professional manufacturer from Henan San Kuang Machinery Technology Co., Ltd., we are proud to present our Spur Helical Gear made of premium 42CrMo4 alloy steel, surface nitrided to achieve a hardness of 60-65HRC. This gear is designed for high-speed applications up to 3000 rpm with module range from 2 to 12, offering exceptional durability and precision for demanding industrial environments. Our factory, spanning 10,000-30,000 square meters with over 50 skilled employees, ensures strict quality control from raw material selection to final inspection.
The combination of spur and helical tooth profiles delivers superior load distribution, reduced noise, and higher torque capacity compared to standard spur gears. The nitriding process creates a hard, wear-resistant surface while maintaining a tough core, making it ideal for applications requiring both strength and fatigue resistance. Below are key features and technical specifications:
- Material & Heat Treatment: 42CrMo4 steel with gas nitriding, case depth 0.3-0.5mm, surface hardness 60-65HRC, core hardness 30-35HRC.
- Precision Grade: Available in DIN 6 to DIN 8, ensuring low backlash and smooth operation at high speeds.
- Module Range: 2, 3, 4, 5, 6, 8, 10, 12 – customizable upon request.
- Speed Capability: Tested for continuous operation at 3000 rpm with balanced dynamic load.
- Tooth Profile: Optimized for minimal vibration and noise, suitable for gearboxes, pumps, and compressors.
- Surface Finish: Ra ≤ 0.8 μm on tooth flanks, reducing friction and heat generation.
| Parameter | Value |
|---|---|
| Material | 42CrMo4 (AISI 4140 equivalent) |
| Hardness (Surface) | 60-65 HRC |
| Module | 2 – 12 |
| Max Operating Speed | 3000 rpm |
| Case Depth | 0.3 – 0.5 mm |
| Precision Grade | DIN 6 – DIN 8 |
| Weight (per piece) | Customizable by size |
Our spur helical gears are extensively used in high-speed transmission systems such as wind turbine gearboxes, industrial compressors, marine propulsion, and heavy-duty pumps. The nitrided surface provides excellent resistance to pitting and scuffing, extending service life significantly. Customers benefit from reduced maintenance costs, improved energy efficiency, and reliable performance under cyclic loads.
We are committed to providing customized solutions – gears can be manufactured with specific bore sizes, keyways, or special tooth modifications to meet your exact requirements. Each gear undergoes rigorous testing including magnetic particle inspection, hardness testing, and runout measurement to ensure compliance with international standards.
Trust and Reliability – Henan San Kuang Machinery Technology Co., Ltd. has been a trusted supplier since 2022, with an annual export value of US$2.5 Million – US$5 Million and products shipped to over 15 countries including North America, Europe, and Southeast Asia. We hold multiple certifications such as ISO9001, ISO14000, OHSAS18001, and others, reflecting our dedication to quality management and environmental responsibility. Our factory is located in Luoyang, Henan – a major industrial hub with convenient access to ports (Shanghai, Qingdao, Tianjin, Lianyungang).
We invite you to contact us for a quote or technical consultation. Our experienced engineers are ready to assist you in selecting the optimal gear solution for your high-speed application. Choose San Kuang – where precision meets performance.
Frequently Asked Questions
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Q: What is the maximum operating temperature for this gear?
A: The nitrided 42CrMo4 gear can operate continuously up to 180°C. For higher temperatures, alternative materials or coatings can be discussed. -
Q: Can you provide gears with custom bore diameter and keyway?
A: Yes, we offer fully customizable bore sizes, keyways, and set screw holes based on your drawings or specifications. -
Q: How do you ensure the gear teeth are balanced for 3000 rpm?
A: We perform dynamic balancing for each gear above 1500 rpm, typically achieving G2.5 balance grade as standard. -
Q: What is the typical lead time for a batch of 10 gears?
A: For standard modules (2-6), lead time is 15-20 working days. Larger modules may require 25-30 days. Rush orders are possible with prior arrangement. -
Q: Do you offer a warranty against manufacturing defects?
A: Yes, we provide a 12-month warranty from the date of shipment covering material and workmanship defects. -
Q: Can these gears be used in reverse rotation?
A: Absolutely, the symmetrical tooth profile allows bidirectional operation without performance loss. -
Q: What packing method do you use for export?
A: Each gear is individually wrapped with anti-rust paper, foam protected, and packed in plywood crates suitable for sea freight. -
Q: Do you have certificates for material traceability?
A: Yes, we provide mill certificates for 42CrMo4 raw material and heat treatment reports upon request.
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