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Help CenterPrecision Ground Helical Gears 20CrMnTi Hardness HRC58-62 for High Torque Transmission
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Precision Ground Helical Gears manufactured by Henan San Kuang Machinery Technology Co., Ltd. are engineered for demanding high torque transmission applications. With over a decade of experience since 2014, our facility spanning 10,000–30,000 square meters houses 51–100 skilled professionals dedicated to producing gears that meet rigorous industrial standards. Using premium 20CrMnTi alloy steel and achieving a hardness of HRC58–62, these gears offer exceptional wear resistance and load capacity. Our certified quality management systems (including ISO9001, ISO14000, and others) ensure every gear delivers consistent performance and reliability in the toughest environments.
Our helical gears are precision-ground to achieve superior surface finish and dimensional accuracy, reducing noise and vibration during operation. The helical tooth design provides gradual load engagement, enabling smoother power transmission and higher torque capacity compared to spur gears. Whether used in automotive transmissions, industrial machinery, or heavy equipment, these gears excel in transferring power efficiently while minimizing backlash and heat generation.
Key Features & Technical Specifications
- Material: 20CrMnTi case-hardened alloy steel for core toughness and surface wear resistance.
- Hardness: HRC58–62 after carburizing and quenching, ensuring long service life under heavy loads.
- Tooth Profile: Helical with optimized helix angle for quiet operation and high torque transmission.
- Surface Finish: Precision ground to Ra ≤ 0.8 μm, reducing friction and improving gear lifespan.
- Gear Accuracy: Achievable DIN 6–7 grade (customizable to higher grades upon request).
- Heat Treatment: Carburizing, quenching, and tempering for case depth of 0.8–1.2 mm.
- Application: Ideal for high torque, high speed, and heavy-duty transmissions in mining, construction, and automotive sectors.
| Parameter | Value |
| Module (M) | 1–12 (custom) |
| Number of Teeth | 10–150 (custom) |
| Helix Angle | 15°–30° (custom) |
| Face Width | 10–200 mm (custom) |
| Pressure Angle | 20° |
| Hardness | HRC58–62 |
| Surface Roughness | Ra ≤ 0.8 μm |
| Accuracy Grade | DIN 6–7 (higher available) |
The combination of 20CrMnTi material and carburizing heat treatment yields a hard outer case (HRC58–62) with a tough core, providing excellent resistance to pitting, bending fatigue, and impact loading. This makes our gears particularly suitable for applications where sudden torque spikes and continuous heavy loads are common. The precision grinding process ensures consistent tooth geometry across the entire gear, minimizing contact stress and maximizing power transmission efficiency – often exceeding 98% in well-lubricated systems.
Each gear undergoes rigorous quality inspection including hardness testing, tooth profile measurement, and runout verification. We also offer customized solutions such as keyways, splines, and special bore sizes to match your specific shaft and mounting requirements. Our engineering team can assist with design optimization for your unique torque and speed parameters.
Why Choose Henan San Kuang Machinery?
With annual export value between USD 2.5–5 million and customers across global markets including North America, Europe, Southeast Asia, and Oceania, we have established a solid reputation for delivering reliable power transmission components. Our factory spans over 10,000 square meters and is equipped with advanced CNC gear hobbing, grinding, and heat treatment facilities. We hold multiple certification standards such as ISO9001, ISO14000, OHSAS18001, and others, reflecting our commitment to quality, environmental responsibility, and occupational health.
Our skilled team of 51–100 employees includes experienced engineers and technicians who specialize in gear manufacturing. We use strict incoming material inspection and in-process quality control to ensure every batch meets your specifications. We also offer flexible shipping from major ports including Shanghai, Lianyungang, Qingdao, and Tianjin, ensuring timely delivery to your location.
Contact us today to discuss your helical gear requirements and request a custom quotation. We are committed to providing high-quality Precision Ground Helical Gears that deliver reliable high torque transmission for your most demanding applications. Let us be your trusted partner in power transmission solutions.
Frequently Asked Questions (FAQ)
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Q: What is the maximum torque capacity of these helical gears?
A: The torque capacity depends on gear dimensions, module, face width, and operating conditions. For specific values, please provide your application parameters; we can calculate and design accordingly. Typically, our gears can handle torque up to several thousand Nm depending on size. -
Q: Can you supply gears with custom bore sizes or keyways?
A: Yes, we offer full customization including bore diameter, keyway dimensions, and spline profiles. Please provide your shaft specifications when placing an order. -
Q: What is the typical lead time for these gears?
A: Lead time varies by complexity and quantity. Standard sizes (non-custom) may ship within 15–25 working days. Custom designs typically require 25–40 working days. Please contact us for a precise schedule. -
Q: Are these gears suitable for high-speed applications?
A: Yes, the precision ground surface and balanced design allow operation at moderate to high speeds. For very high RPM (above 5000 RPM), we recommend additional dynamic balancing. Our team can advise. -
Q: Do you provide sample testing before mass production?
A: Absolutely. We can produce prototype samples for your testing and approval. Sample cost and lead time depend on your specific requirements. -
Q: Can you achieve DIN 5 accuracy or higher?
A: Yes, we can achieve DIN 5 grade or better upon request. Such higher precision may involve additional cost and longer processing time. Please discuss your requirements. -
Q: What packaging do you use for export?
A: Each gear is individually wrapped in anti-rust paper, then packed in wooden crates or cartons with foam padding to prevent damage during transit. We can also customize packaging according to your specifications. -
Q: What payment terms do you accept?
A: We accept T/T, L/C, and other negotiable terms. Standard terms are 30% deposit with 70% balance before shipment. For established customers, credit terms may be available.
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