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Help CenterSpline Gear Shaft 4140 Alloy Steel Hardened HRC 58-62 DIN 6 Spline Tolerance
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Henan San Kuang Machinery Technology Co., Ltd., established in 2014 and headquartered in Luoyang, Henan, China, is a professional manufacturer of precision transmission components. Our Spline Gear Shaft made from 4140 alloy steel is engineered to deliver exceptional durability and performance in demanding industrial applications. With a hardened surface reaching HRC 58-62 and strict adherence to DIN 6 spline tolerance, this shaft ensures accurate power transmission, reduced backlash, and extended service life. Whether for heavy-duty gearboxes, agricultural machinery, or automotive drivelines, our product meets the rigorous standards of global markets.
Key Features & Technical Specifications
- Premium Material: 4140 alloy steel (AISI 4140) offers excellent toughness, wear resistance, and fatigue strength, suitable for high-stress environments.
- Controlled Hardness: Through induction hardening or carburizing, we achieve a case hardness of HRC 58-62 with a hardened depth of 1.5-2.5mm, balancing core toughness and surface wear resistance.
- Precision Spline: Manufactured to DIN 6 tolerance class (ISO 4156), ensuring minimal runout and accurate engagement with mating components.
- Surface Finish: Standard ground finish (Ra ≤ 0.8 μm) reduces friction and noise; optional polished or coated finishes available upon request.
- Customizable Dimensions: Shaft length, spline module, number of teeth, and keyway configurations can be tailored to your blueprint.
| Parameter | Value |
|---|---|
| Material | 4140 Alloy Steel |
| Hardness (Case) | HRC 58-62 |
| Spline Tolerance | DIN 6 (ISO 4156) |
| Spline Type | Involute (30° pressure angle) |
| Surface Finish | Ra ≤ 0.8 μm (ground) |
| Max Length | Up to 3000 mm (custom) |
| Straightness | ≤ 0.05 mm per 1000 mm |
Customer Benefits
- Reduced Downtime: High hardness and precise spline profile minimize wear and misalignment, extending maintenance intervals.
- Enhanced Efficiency: DIN 6 tolerance ensures smooth torque transmission with minimal energy loss.
- Versatile Application: Suitable for gearboxes, pumps, compressors, agricultural machinery, and automotive differentials.
- Cost-Effective: 4140 alloy steel offers a balance of performance and cost compared to premium tool steels.
- Global Compatibility: Spline dimensions conform to international standards, allowing easy replacement of competitors' parts.
Why Choose Henan San Kuang Machinery?
With a factory spanning 10,000–30,000 square meters and a dedicated team of 51–100 employees, we have been delivering high-quality mechanical components since 2014. Our annual export value reaches US$2.5–5 million, serving markets across North America, South America, Europe, Southeast Asia, Africa, and Oceania. We are proud to hold multiple certifications including ISO9001, ISO14000, OHSAS18001, SA8000, and others, reflecting our commitment to quality, environmental responsibility, and social accountability. Our products are shipped from major ports such as Shanghai, Lianyungang, Qingdao, and Tianjin, ensuring efficient logistics worldwide.
Frequently Asked Questions
-
Q: What is the maximum length you can produce?
A: Our standard capacity is up to 3000 mm. Longer shafts can be discussed for custom orders. -
Q: Can you provide spline shafts with different hardness levels?
A: Yes, we can adjust the hardness range (e.g., HRC 50-55, HRC 58-62) based on your application requirements. -
Q: Do you offer spline shafts with a keyway or other additional features?
A: Absolutely. Keyways, threads, cross holes, and other features are customizable as per your engineering drawings. -
Q: What is the typical lead time for a standard spline shaft?
A: For standard sizes (without special customization), lead time is approximately 15–20 working days. Custom orders may require 25–35 days. -
Q: How do you ensure the DIN 6 spline tolerance is met?
A: We use precision CNC hobbing and grinding machines, followed by 100% inspection with a coordinate measuring machine (CMM) and spline gauges. -
Q: What packaging do you use for export?
A: Shafts are individually wrapped with anti-rust oil, then packed in wooden crates or pallets suitable for sea freight. -
Q: Do you provide samples for testing?
A: Yes, sample orders are accepted. The sample cost and shipping are negotiable, and the cost will be deducted from mass production orders. -
Q: Which industries commonly use your spline gear shafts?
A: Our shafts are widely used in agricultural machinery, construction equipment, automotive transmissions, industrial gearboxes, and mining machinery.
Contact us today for a competitive quote or technical consultation. Let our experience support your next project.
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