Product Introduction

• Structure: One-piece forgingof high-strength 20CrMnTi alloy steel, the input shaft and 1st gear are integrated without any press-fit structure. The clutch connection end is designed with small-spec external involute splines, the transmission end is integrated with 1st gear teeth, and the middle journal is precision-machined for matching with the front small bearing of the 10-speed transmission. No reserved press-fit positions for other gears on the shaft body.

• Key Specifications:

• Material: 20CrMnTi carburized steel (monoblock forging, non-split)

• Surface treatment: Carburizing + quenching + precision gear grinding (1st gear teeth); ordinary grinding (journal)

Core Function

1. Medium-load power input: Transmits engine torque from the medium-light load clutch to the main box of the HW19710 10-speed transmission, the only power input channel for the 10-speed transmission system.

2. 1st gear exclusive torque transfer: The integrated 1st gear meshes with the countershaft 1st gear of the 10-speed transmission to achieve the highest torque multiplication ratio for the starting and low-speed climbing of medium-light load trucks (30t below).

3. Simplified shaft support: The precision-machined small journal matches the dedicated bearing of the 10-speed transmission, maintaining the coaxiality of the input shaft during rotation and avoiding radial runout in medium-load scenarios.

Input Shaft AZ2210020105 – SINOTRUK HW Series Gearbox Replacement Part

Premium Input Shaft AZ2210020105 for SINOTRUK HW Series Gearbox – Built for Demanding Operations

When your fleet depends on uninterrupted power transfer, every component inside the gearbox matters. The Input Shaft AZ2210020105 serves as the critical link between the clutch assembly and the transmission gears in the SINOTRUK HW Series Gearbox. Engineered to handle extreme torque loads and high rotational speeds, this input shaft ensures smooth power delivery from the engine to the drivetrain — mile after mile, load after load.

At Mettlead, we supply this genuine-spec input shaft directly from our manufacturing base in China. As a dedicated global supplier of SINOTRUK, HOWO, SHACMAN, FAW, WEICHAI, DONGFENG, and FOTON truck parts, we understand that wholesale buyers and distribution agents need reliable components at competitive factory-direct prices. That is exactly what we deliver.

Whether you are restocking your warehouse or fulfilling an urgent client order, the Input Shaft AZ2210020105 for SINOTRUK HW Series Gearbox is ready to ship with flexible MOQ options and secure international payment methods.

Key Features and Benefits of Input Shaft AZ2210020105

Choosing the right input shaft is not just about fitment — it is about long-term performance, reduced downtime, and lower total cost of ownership for your end customers. Here is why this component stands out:

• Precision-Machined Splines: The spline profiles on this input shaft are manufactured to OEM dimensional tolerances, guaranteeing a perfect mesh with mating gears and the clutch disc hub. This eliminates premature wear and gear noise.
• High-Grade Alloy Steel Construction: Forged from carburized alloy steel, the shaft undergoes heat treatment to achieve a hardened surface with a tough core. As a result, it resists fatigue cracking even under continuous heavy-load conditions.
• Optimized Surface Finish: The bearing journals and sealing surfaces are ground to a mirror-like finish, which reduces friction, minimizes heat generation, and extends bearing service life.
• Direct OEM Replacement: The AZ2210020105 input shaft is a drop-in replacement for the original SINOTRUK HW gearbox part number. Therefore, installation requires no modifications, saving your customers time and labor costs.
• Strict Quality Control: Every shaft undergoes dimensional inspection, hardness testing, and surface defect analysis before it leaves our facility. We hold ourselves to the same standards your customers expect from original equipment.
• Factory-Direct Wholesale Pricing: By sourcing directly from Mettlead, you bypass multiple intermediaries. Consequently, you gain healthier profit margins while offering competitive pricing in your local market.

Technical Specifications – Input Shaft AZ2210020105

Accurate specifications matter when you are matching parts to specific gearbox assemblies. The table below provides the essential parameters for the SINOTRUK HW Series Gearbox Input Shaft AZ2210020105:

Application Scenarios – Where Input Shaft AZ2210020105 Fits

The Input Shaft AZ2210020105 is specifically designed for the SINOTRUK HW Series Gearbox, which powers a wide range of heavy-duty commercial vehicles. If your customers operate any of the following, this part belongs on your shelf:

• SINOTRUK HOWO A7 / T7H Tractor Trucks: Long-haul logistics operators rely on the HW gearbox for reliable shifting performance over hundreds of thousands of kilometers. A worn input shaft leads to gear clash and power loss — this replacement restores factory-level operation.
• SINOTRUK SITRAK C7H Heavy-Duty Trucks: Premium long-distance transport vehicles equipped with HW19710 transmissions depend on a precisely manufactured input shaft for smooth engagement under high torque.
• HOWO Dump Trucks and Mining Vehicles: In construction and mining environments, extreme shock loads punish gearbox internals. The hardened surface of this input shaft withstands repeated impact loading that would fatigue lesser components.
• HOWO Concrete Mixer Trucks: Frequent stop-start cycles and PTO-driven operations demand a gearbox input shaft that handles constant engagement and disengagement without developing excessive backlash.

In short, any vehicle running a SINOTRUK HW series transmission that requires input shaft replacement is a candidate for the AZ2210020105. For more SINOTRUK gearbox components, browse our complete Gearbox Parts category or visit our dedicated SINOTRUK HOWO Gearbox Parts page.

OEM/ODM Capability – White-Label and Custom Packaging

As a wholesale distributor or regional agent, you need more than just quality parts. You need a supply partner who supports your brand strategy. Mettlead offers flexible OEM and ODM services for the Input Shaft AZ2210020105 and our full range of SINOTRUK HOWO Truck Parts:

• White-Label Packaging: We can ship with neutral packaging or apply your own brand labels, allowing you to build equity in your market without revealing your supply chain.
• Custom Packaging Design: Need specific box dimensions, color schemes, or multilingual labels? Our packaging team accommodates custom requirements for orders meeting the agreed MOQ.
• Quality Certification Documents: We provide inspection reports, material certificates, and test data that you can pass along to your customers for added confidence.
• Flexible Order Quantities: Whether you need a trial shipment of 10 pieces or a container load of 500 units, we structure orders around your business needs — not the other way around.

Moreover, we welcome factory visits. If you want to see our production lines, quality control processes, and warehousing firsthand, our team in China is happy to arrange an on-site inspection.

Customer Case Study – Input Shaft AZ2210020105 Bulk Order for East African Market

In early 2024, a truck parts distributor based in Nairobi, Kenya approached us with a recurring challenge. Their end customers — fleet operators running SINOTRUK HOWO tractor trucks on the Mombasa–Nairobi corridor — were experiencing frequent gearbox failures after 300,000 km of service. The primary failure point? A worn Input Shaft AZ2210020105 in the HW series gearbox.

Previously, the distributor had sourced input shafts from a third-party trader, but inconsistent quality led to high return rates and unhappy customers. After discovering Mettlead through our online catalog, they requested samples of the SINOTRUK HW Series Gearbox Input Shaft AZ2210020105 for bench testing.

Our quality team provided full dimensional inspection reports alongside the samples. The distributor’s technical team confirmed that spline tolerances, hardness values, and overall fitment matched OEM specifications precisely. Consequently, they placed an initial order of 200 units with custom neutral packaging.

Six months later, the feedback was clear: zero warranty claims, improved customer satisfaction, and a 35% cost reduction compared to their previous supplier. They have since expanded their orders to include additional SINOTRUK HW gearbox components — countershafts, synchronizer assemblies, and output flanges — all sourced through Mettlead.

This is the kind of partnership we build. If you are facing similar supply challenges in your market, we are ready to help.

Frequently Asked Questions – Input Shaft AZ2210020105 SINOTRUK HW Series Gearbox

What exact gearbox models does the Input Shaft AZ2210020105 fit?

The AZ2210020105 input shaft is designed for the SINOTRUK HW series gearbox family, including the HW15710, HW19710, and HW19712 models. These transmissions are widely installed in HOWO A7, T7H, SITRAK C7H, and various HOWO dump truck configurations. However, since gearbox variants can differ by production year and vehicle specification, we always recommend confirming the OEM part number on your existing shaft before ordering.

What material is the Input Shaft AZ2210020105 made from, and how is it heat-treated?

This input shaft is forged from carburized alloy steel — typically 20CrMnTi or an equivalent grade. After forging and machining, it undergoes a carburizing process followed by quenching and tempering. This combination creates a hard, wear-resistant surface layer (HRC 58–62) while maintaining a tough, shock-absorbing core (HRC 30–42). As a result, the shaft resists both surface pitting and fatigue fracture under heavy torque loads.

How can I verify the quality of the Input Shaft AZ2210020105 before placing a bulk order?

We encourage all new wholesale partners to request samples first. Each sample ships with a dimensional inspection report and hardness test certificate. Additionally, you are welcome to visit our manufacturing facility in China to observe our quality control process in person. We conduct 100% dimensional checks, magnetic particle inspection for surface cracks, and hardness verification on every batch.

What are the common symptoms of a failing input shaft in the SINOTRUK HW gearbox?

A worn or damaged input shaft typically presents with several telltale signs. You may hear a whining or grinding noise that changes with engine RPM but disappears when the clutch is depressed. Difficulty engaging gears — especially first and reverse — is another common symptom. In severe cases, you may notice metal particles in the gearbox oil during routine maintenance. If your end customers report any of these issues, the input shaft should be inspected promptly to prevent cascading damage to other gearbox internals.

Does the Input Shaft AZ2210020105 come with a bearing or pilot bushing pre-installed?

No, the input shaft ships as a standalone component without pre-installed bearings or bushings. This is standard practice because the pilot bearing condition should be assessed independently during a gearbox rebuild. We do supply matching bearings and related HW gearbox components separately — feel free to inquire about complete rebuild kits if your customers prefer bundled solutions.

What is the typical service life of this input shaft under normal operating conditions?

Under standard highway haulage conditions with proper gearbox oil maintenance, the Input Shaft AZ2210020105 is designed to match OEM service intervals — typically 400,000 to 600,000 km before inspection is recommended. However, actual lifespan varies significantly based on operating conditions. Overloading, aggressive driving, contaminated transmission oil, or improper clutch adjustment can all accelerate wear. Educating your customers about proper maintenance extends component life and reduces warranty exposure.

Ready to Stock the Input Shaft AZ2210020105? Let’s Talk Wholesale Pricing.

You have read the specs, you understand the application, and you know the quality behind every shaft we produce. Now it is time to take the next step. Whether you need a sample shipment to validate fitment or a full container of Input Shaft AZ2210020105 for SINOTRUK HW Series Gearbox, our team is ready to provide a competitive quotation tailored to your order volume.

Here is what happens when you reach out:

1. You submit your inquiry with the required quantity and destination country.
2. We respond within 24 hours with FOB/CIF pricing, lead time, and shipping options.
3. You approve the quotation, and we begin production or ship from ready stock.
4. Your order arrives with full documentation, ready to move into your distribution channel.

No middlemen. No guesswork. Just a direct line to a factory that speaks your language and understands your business.

Contact Us Now to request your wholesale quote for the Input Shaft AZ2210020105 — or ask us about any other SINOTRUK, HOWO, SHACMAN, FAW, or WEICHAI parts you need. We are here to help your business grow.