Product Introduction

• Structure: A fully integrated preassembled assembly. The main shaft is forged from thickened 20CrMnTi alloy steel, with multi-section external splines to match synchronizer hubs and gears. The rear end is integrated with a precision ball joint, which replaces the traditional flange connection to accommodate angular displacement between the transmission and drive shaft.

• Performance: The integrated ball joint allows for angular displacement between the transmission and drive shaft, reducing vibration and wear in uneven road conditions. The thickened shaft and multi-section splines ensure stable power transmission under ultra-heavy loads, while the high-frequency quenched surface resists spline wear during long-term operation.

Core Function

1. Ultra-heavy load power output: Transmits torque from the transmission main box to the drive shaft, supporting the highest load capacity of the HW25712 transmission.

2. Angular displacement compensation: The ball joint accommodates up to ±15° of angular misalignment between the transmission and drive shaft, reducing stress on driveline components.

3. Stable spline engagement: Multi-section precision splines ensure secure engagement with synchronizer hubs and gears, preventing slippage under high torque.

Input Shaft With Ball Joint Assy WG2203040009 – SINOTRUK HW Series Gearbox

When your SINOTRUK HW series gearbox demands a reliable replacement, the Input Shaft With Ball Joint Assy WG2203040009 delivers the precision-engineered performance you need. This critical transmission component ensures smooth power transfer from the clutch assembly to the gearbox internals, keeping your heavy-duty trucks running at peak efficiency. At Mettlead, we supply this genuine-spec gearbox input shaft directly from our factory in China, which means you get unbeatable pricing without compromising on quality.

Why Choose the WG2203040009 Input Shaft With Ball Joint Assembly?

The input shaft with ball joint assembly sits at the heart of your SINOTRUK HW gearbox. It bears the full rotational force coming from the engine and transfers it into the gear train. Over time, wear and fatigue can degrade the ball joint connection and shaft splines, leading to gear engagement issues, abnormal noise, and even complete transmission failure. Replacing with a high-quality Input Shaft With Ball Joint Assy WG2203040009 restores smooth shifting and extends the service life of your entire gearbox system.

Key Features and Benefits

• OE-Spec Precision: Manufactured to match SINOTRUK original equipment dimensions and tolerances, ensuring a perfect fit within the HW series gearbox housing.
• Integrated Ball Joint Design: The pre-assembled ball joint reduces installation time and eliminates alignment errors that can occur with separate components.
• High-Strength Alloy Steel: Forged from premium alloy steel and heat-treated for superior wear resistance, fatigue strength, and long-term durability under heavy loads.
• Precision-Ground Splines: CNC-machined spline profiles ensure tight meshing with mating gears, minimizing backlash and vibration during operation.
• Corrosion-Resistant Surface Treatment: Advanced surface hardening protects against moisture and contaminants commonly found in harsh operating environments.
• Plug-and-Play Replacement: Directly replaces the original WG2203040009 part without modifications, saving workshop time and labor costs.

Technical Specifications – WG2203040009 Input Shaft With Ball Joint Assy

Application Scenarios – Compatible Vehicles and Systems

The Input Shaft With Ball Joint Assy WG2203040009 is specifically designed for the SINOTRUK HW series manual gearbox. This gearbox platform is widely used across multiple heavy-duty truck models, making this input shaft assembly a high-demand component in global aftermarkets. Below are the primary applications where this part performs flawlessly:

• SINOTRUK HOWO A7 / T7H Heavy-Duty Trucks – Long-haul logistics and construction site transport.
• SINOTRUK SITRAK C7H / T7H Series – Premium tractor heads used in international freight corridors.
• SINOTRUK HOWO Dump Trucks – Mining and earthmoving applications requiring frequent gear changes under extreme torque.
• SINOTRUK Concrete Mixer Trucks – Continuous operation where gearbox reliability is non-negotiable.
• Adapted HW Gearbox Platforms – Some FAW and SHACMAN models utilizing the HW-series transmission architecture.

In essence, wherever the SINOTRUK HW gearbox is installed and the input shaft assembly needs replacement, part number WG2203040009 is your go-to solution. Explore more SINOTRUK HOWO gearbox parts in our dedicated catalog, or browse our full gearbox parts category for related components.

OEM/ODM Capability – Custom Packaging and White-Label Solutions

At Mettlead, we understand that different markets have different branding needs. That is precisely why we offer flexible OEM and ODM options for the Input Shaft With Ball Joint Assy WG2203040009 and all our SINOTRUK gearbox components:

• White-Label Packaging: We supply parts in neutral packaging so you can apply your own brand labels, making it easy to build your local brand identity.
• Custom Packaging: Need branded boxes, holographic stickers, or specific labeling? Our team works with you to create packaging that reflects your company image.
• Bulk Order Flexibility: Whether you need 10 pieces or 10,000, we accommodate varying order volumes with competitive tiered pricing.
• Strict Quality Control: Every WG2203040009 input shaft assembly passes through multi-stage quality inspection before shipment, including dimensional checks, hardness testing, and visual inspection.

Additionally, our factory welcomes on-site visits. If you want to see our production lines and QC processes firsthand, we are happy to arrange a tour at your convenience.

Customer Case Study – WG2203040009 Input Shaft Bulk Procurement

A fleet maintenance company based in East Africa recently approached Mettlead with a recurring problem: their fleet of over 200 SINOTRUK HOWO dump trucks experienced frequent gearbox failures due to substandard aftermarket input shaft assemblies. The ball joints would wear prematurely, causing gear disengagement and costly downtime at their mining sites.

After sourcing the Input Shaft With Ball Joint Assy WG2203040009 from Mettlead, the customer reported a significant improvement. Specifically, the average service interval for the HW series gearbox extended by approximately 40%, and unplanned breakdowns related to input shaft failure dropped by over 70% within the first six months. Furthermore, our factory-direct pricing allowed them to reduce per-unit procurement cost by 25% compared to their previous supplier.

The customer now places quarterly orders for the WG2203040009 along with other SINOTRUK HOWO truck spare parts, consolidating their supply chain through a single trusted partner. This case illustrates how choosing the right supplier for your SINOTRUK HW gearbox input shaft with ball joint assembly directly impacts operational uptime and total cost of ownership.

Frequently Asked Questions – Input Shaft With Ball Joint Assy WG2203040009

What exactly does the input shaft with ball joint assembly do in the HW gearbox?

The input shaft is the first rotating component inside the gearbox that receives torque from the engine via the clutch disc. The integrated ball joint at the front end connects to the clutch release mechanism, allowing the shaft to rotate freely while maintaining axial alignment. Together, they ensure smooth torque transfer and precise gear engagement across all speed ranges.

How do I know when my WG2203040009 input shaft needs replacement?

Common symptoms include grinding noises during gear shifts, difficulty engaging specific gears, excessive vibration at the clutch pedal, and visible play or wobble at the ball joint connection. If you notice any of these signs, inspecting the input shaft assembly should be a priority before secondary damage occurs to synchro rings or the countershaft.

Is this WG2203040009 input shaft compatible with all HW gearbox models?

Yes, the WG2203040009 input shaft with ball joint assembly is designed for the standard SINOTRUK HW series gearbox platform, including HW19710, HW19712, and related variants. However, we always recommend confirming the exact gearbox model number from your vehicle nameplate to ensure a perfect match.

What material is the input shaft made from, and how does it handle heavy loads?

This input shaft is forged from high-strength alloy steel and undergoes carburizing and quenching heat treatment. This process creates a hard, wear-resistant surface layer while maintaining a tough core that absorbs shock loads. As a result, it handles the repeated high-torque cycles typical of heavy-duty trucking applications without premature fatigue failure.

Can I order just the ball joint or the shaft separately?

The WG2203040009 is supplied as a complete assembly with the ball joint pre-installed. This integrated design is intentional — it ensures precise alignment and eliminates the risk of improper assembly in the field. Installing a complete, factory-assembled unit is always more reliable than trying to replace sub-components individually.

What is the typical lead time for this part?

For standard stock orders, we typically ship within 3–7 business days. Larger bulk orders or custom-packaged shipments may take 10–15 business days depending on quantity. We provide tracking information as soon as goods leave our warehouse so you always know where your shipment is.

Ready to Source Your WG2203040009 Input Shaft With Ball Joint Assy?

Getting the right Input Shaft With Ball Joint Assy WG2203040009 for your SINOTRUK HW series gearbox is just one message away. Whether you need a single piece for urgent repair or bulk quantities for ongoing fleet maintenance, Mettlead delivers factory-direct quality at prices that protect your margins.

Here is what you can expect when you work with us:

1. Fast, professional quotation within 24 hours.
2. Transparent pricing with no hidden fees.
3. Flexible payment options that keep your transactions secure.
4. Reliable global shipping with full tracking.

Do not let gearbox downtime eat into your profits. Contact us today to request your quote for the WG2203040009 input shaft assembly, and let Mettlead become your trusted supply partner for all SINOTRUK, HOWO, SITRAK, and HW gearbox parts.