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Home > Industrial Equipment & Components > Shaft > Spline Shaft > Heavy Duty Gear Spline Shaft Custom Size Machining For Construction Mining Machinery

Heavy Duty Gear Spline Shaft Custom Size Machining For Construction Mining Machinery

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Product Spotlights

Precision custom heavy duty gear spline shafts designed for construction and mining machinery. Flexible material options (alloy steel), in-house heat treatment (HRC 28-62), CNC machining with tight tolerances (ISO grade 6-7), and surface protection. Backed by 10+ years of manufacturing experience, ISO9001-certified factory, and global shipping via major Chinese ports. Tailored to your drawing or sample for seamless integration and extended equipment life.

Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)

Key Specifications

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Material:

Other, Alloy Steel / Carbon Steel (e.g., 40Cr, 42CrMo, 20CrMnTi)

Surface Treatment:

Other, Blackening, Phosphating, Chrome Plating, Galvanizing (optional)

Application:

Other, Construction machinery

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Henan San Kuang Machinery Technology Co., Ltd.

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
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Material Other, Alloy Steel / Carbon Steel (e.g., 40Cr, 42CrMo, 20CrMnTi)

Surface Treatment Other, Blackening, Phosphating, Chrome Plating, Galvanizing (optional)

Application Other, Construction machinery

Custom Size Length up to 6000mm, Diameter from 50mm to 500mm

Processing Technology CNC Turning, Hobbing, Grinding, Heat Treatment

Hardness HRC 28-62 (customizable)

Tolerance Grade ISO 6-7 grade (as per customer requirement)

Packaging Wooden cases, steel pallets, or custom export packaging

Introduction to Our Heavy Duty Gear Spline Shaft Custom Machining Service
At Henan San Kuang Machinery Technology Co., Ltd., we specialize in the custom machining of heavy duty gear spline shafts designed specifically for construction and mining machinery. With over a decade of experience since our establishment in 2014, we have built a solid reputation for delivering precision components that withstand the toughest working conditions. Our factory spans 10,000 to 30,000 square meters, equipped with advanced CNC machines and heat treatment facilities, ensuring every spline shaft meets rigorous quality standards. Whether you need a single prototype or bulk production, our engineering team collaborates closely with you to tailor dimensions, materials, and heat treatment profiles to your exact specifications, maximizing the performance and lifespan of your equipment.

Key Features & Technical Specifications

Heavy Duty Load Capacity: Designed to transmit high torque and axial loads in demanding environments such as excavators, bulldozers, and mining crushers.
Custom Size Machining: We offer complete flexibility in shaft length, diameter, spline teeth profile (involute, serrated, rectangular), and keyway dimensions to match your machinery requirements.
Material Options: Choose from a range of high-strength alloy steels like 40Cr, 42CrMo, 20CrMnTi, or stainless steel for corrosion resistance. Each material is sourced from certified mills.
Precision Heat Treatment: Our in-house heat treatment processes include carburizing, induction hardening, and tempering to achieve a hardened surface (up to HRC 62) while maintaining ductile core properties.
Advanced Manufacturing: Utilizing CNC hobbing, spline rolling, gear grinding, and stress-relieving techniques to ensure tight tolerances (ISO grade 6-7) and excellent surface finish (Ra 0.8-1.6 µm).
Surface Protection: Optional anti-corrosion coatings such as black oxide, phosphating, hard chrome plating, or DLC coating to extend service life in harsh environments.
100% Inspection: Every shaft undergoes dimensional checks with CMM, hardness testing, and magnetic particle inspection to guarantee defect-free delivery.

Typical Parameters (For Reference)

Parameter	Range / Options
Shaft Length	100 mm – 6000 mm
Outer Diameter	20 mm – 500 mm
Spline Module	0.5 – 12 (standard or custom)
Hardness (Surface)	HRC 50 – 62 (case hardened)
Hardness (Core)	HRC 28 – 42 (quenched & tempered)
Tooth Profile Accuracy	DIN 5480, DIN 5465, ISO 4156, or customer standard
Surface Roughness	Ra 0.4 – 3.2 µm (depending on requirement)

Benefits for Your Construction & Mining Equipment

Extended Service Life: Optimized heat treatment and material selection reduce wear and fatigue failure, minimizing downtime and maintenance costs.
Improved Power Transmission: Precise spline teeth geometry ensures smooth engagement, lower vibration, and higher torque capacity.
Seamless Integration: Custom dimensions eliminate the need for adapters or modifications, speeding up assembly and retrofit projects.
Competitive Lead Times: Our efficient production lines and experienced workforce allow us to deliver orders within 15-30 working days for standard custom sizes.
Global Logistics: We ship via major ports (Shanghai, Qingdao, Tianjin, Lianyungang) to markets across North America, South America, Europe, Africa, and Asia.

Why Choose Henan San Kuang Machinery?
As a trusted manufacturer catering to the construction and mining industry since 2014, we have served clients in over 20 countries with an annual export value of US$2.5-5 million. Our 51-100 skilled employees operate under a comprehensive quality management system certified to ISO9001 and other industry standards (ISO14000, OHSAS18001, etc.). Every heavy duty gear spline shaft is backed by rigorous testing and our commitment to continuous improvement. We invite you to contact our sales team for a quotation or technical consultation — let us support your machinery with durable, precision-engineered components that work as hard as your equipment.

Frequently Asked Questions

Q: What is the minimum order quantity for custom spline shafts?
A: We accept both small prototypes (1-10 pcs) and mass production orders. MOQ for production runs is typically 30 pcs, but it is flexible based on material availability and complexity.
Q: Can you match existing spline profiles from OEM parts?
A: Yes. Please provide a sample or detailed drawing (including tooth profile, pitch, pressure angle, and helix angle). We can reverse-engineer and produce identical shafts.
Q: What material do you recommend for high-impact mining applications?
A: For heavy impact and abrasion resistance, we often suggest 42CrMo or 20CrMnTi with carburizing and quenching to achieve a hard case and tough core. The final selection depends on your specific load and environment.
Q: Do you offer heat treatment and surface finishing as part of the service?
A: Absolutely. We provide full in-house heat treatment (carburizing, induction hardening, tempering) as well as surface coatings like phosphating or chrome plating. These are included in the machining package or can be quoted separately.
Q: How do you ensure quality control?
A: We follow a strict QC process: incoming material inspection, in-process dimensional checks, hardness testing, spline gaging, final dimensional report, and optional non-destructive testing (UT, MT). Each shaft is individually serialized for traceability.
Q: What is the typical lead time for a custom size shaft?
A: For standard materials and simple profiles, lead time is around 20-30 working days after drawing approval. Complex designs or special heat treatment may require 35-45 working days. Urgent orders can be expedited upon request.
Q: How do you pack the shafts for export?
A: Shafts are individually wrapped with anti-rust paper, then secured in wooden crates or steel pallets with cushioning. We can also tailor packaging to your special requirements (e.g., vacuum packing, fumigated wood).
Q: Can I get a free sample before placing a large order?
A: Yes, sample orders are welcome. We charge a nominal fee for sample production and shipping, which is refundable upon bulk order placement. Contact us for details.