Product Introduction

• Structure: Precision monoblock forging from 20CrMnTi alloy steel, with an integrated 1st gear at the transmission end (no press-fit components). The clutch end features 10-tooth external involute splines (φ42mm), and the middle journal is precision-ground to match the front deep groove ball bearing of the HW19710 transmission. Key Specifications:

• Material: 20CrMnTi carburized steel (monoblock forging)

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

• Spline specification: 10 teeth × φ42mm (HW19710 clutch exclusive)

• Torque rating: Max input torque 1900N·m

• Matching bearing: Deep groove ball bearing (6209 type)

• Operating temperature: -40°C to +150°C

Core Function

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

2. 1st gear torque transfer: The integrated 1st gear meshes with the countershaft 1st gear, providing the highest torque ratio for starting and low-speed climbing of 30t-rated vehicles.

3. Shaft positioning & support: The precision journal matches the front bearing, maintaining input shaft coaxiality during rotation and avoiding radial runout.

Input Shaft WG2210020101 – SINOTRUK HW Series Gearbox Replacement Part

Premium Input Shaft WG2210020101 for SINOTRUK HW Series Gearbox – Built to Keep Your Fleet Moving

When your heavy-duty trucks depend on smooth, reliable power transmission, every single component inside the gearbox matters. The Input Shaft WG2210020101 is a critical rotating component engineered specifically for the SINOTRUK HW Series Gearbox. It serves as the primary link between the clutch assembly and the gearbox internals, transferring torque from the engine into the transmission system with precision and durability.

At Mettlead, we supply this genuine-spec input shaft directly from our factory in China, which means you get OEM-matching quality at a competitive wholesale price — without middlemen inflating your costs. Whether you are managing a fleet maintenance workshop in Africa, a parts distribution warehouse in the Middle East, or a truck assembly line in Southeast Asia, this input shaft is ready to ship to your door quickly and reliably.

If you are sourcing SINOTRUK HW Series Gearbox parts in bulk, you have come to the right place. Explore our full range of SINOTRUK HOWO Gearbox Parts or browse our complete Gearbox Parts Category to find everything you need in one order.

Key Features and Benefits of Input Shaft WG2210020101

So, what makes this particular input shaft a smart choice for your procurement list? Let us walk you through the advantages:

• Exact OEM Specification: The Input Shaft WG2210020101 is manufactured to match original SINOTRUK HW Series Gearbox dimensions and tolerances, ensuring a perfect fit without any modifications.
• High-Strength Alloy Steel: Forged from premium-grade alloy steel and heat-treated to achieve optimal surface hardness, this shaft resists wear, fatigue, and torsional stress even under extreme loads.
• Precision Spline Machining: The splines are CNC-machined to tight tolerances, guaranteeing smooth engagement with mating gears and minimizing power loss during torque transfer.
• Extended Service Life: Thanks to advanced surface treatment processes, this input shaft delivers a significantly longer lifespan compared to inferior aftermarket alternatives, reducing your clients’ downtime and replacement frequency.
• Factory-Direct Pricing: By sourcing directly from Mettlead, you eliminate unnecessary distribution markups. This keeps your landed cost competitive and your profit margins healthy.
• Strict Quality Control: Every shaft goes through dimensional inspection, hardness testing, and surface finish verification before leaving our facility — so you receive parts that work right the first time.

In short, the Input Shaft WG2210020101 gives you the performance of a genuine part at a price point that makes business sense for bulk purchasing.

Technical Specifications – Input Shaft WG2210020101

Accurate specs are essential when you are matching parts to specific gearbox models. Here is a detailed breakdown of this SINOTRUK HW Series Gearbox input shaft:

Need more specific dimensional data or a cross-reference against another part number? Do not hesitate to contact us directly — our technical team responds within 24 hours.

Application Scenarios – Where Does Input Shaft WG2210020101 Fit?

Understanding exactly where this part belongs helps you recommend the right solution to your customers. Here is how the Input Shaft WG2210020101 fits into the bigger picture:

Compatible Vehicle Models

• SINOTRUK HOWO A7 heavy-duty tractor trucks
• SINOTRUK HOWO 371HP / 375HP / 420HP dump trucks
• SINOTRUK SITRAK C7H series trucks
• SINOTRUK HOWO T7H logistics vehicles
• Other models equipped with SINOTRUK HW Series Gearbox (HW19710, HW15710, HW19712 transmission variants)

Typical Use Cases

Fleet maintenance teams commonly replace the Input Shaft WG2210020101 when they encounter symptoms like abnormal gearbox noise, difficulty shifting, or vibration during acceleration. Because this shaft is the first point of torque entry into the transmission, any wear on its splines or bearing surfaces directly affects the entire drivetrain’s smoothness and reliability.

Additionally, truck overhaul workshops performing full gearbox rebuilds on SINOTRUK HW transmissions regularly order this input shaft as a standard replacement item alongside synchronizer rings, countershaft gears, and bearing kits.

Looking for other SINOTRUK drivetrain components? Browse our full SINOTRUK HOWO Truck Parts catalog for a one-stop sourcing experience.

OEM/ODM Capability – Custom Solutions for Your Market

Every market has different preferences when it comes to packaging, branding, and specifications. That is why Mettlead offers flexible OEM and ODM services tailored to professional buyers:

• White-Label Packaging: Want to sell under your own brand? We provide neutral or custom-branded packaging with your logo, part numbers, and language preferences printed directly on the box.
• Custom Packaging Design: From individual poly bags to branded carton boxes with QR codes linking to your own product pages, we accommodate your packaging workflow.
• Batch Consistency: Our production lines maintain strict dimensional and material consistency across every batch, so your customers always receive the same reliable quality regardless of order size.
• Technical Support: Our engineering team can assist with part cross-referencing, fitment verification, and even customized dimensional adjustments if your application requires slight modifications.

Whether you need 50 pieces or 5,000 pieces of Input Shaft WG2210020101, our factory scales to meet your demand without sacrificing lead time or quality.

Customer Case Study – Input Shaft WG2210020101 Bulk Order Success

Earlier this year, a heavy truck parts distributor based in Nigeria reached out to Mettlead with an urgent requirement. They needed 200 pieces of Input Shaft WG2210020101 for their workshop network servicing SINOTRUK HOWO fleets across West Africa. Their previous supplier had delivered inconsistent quality — some shafts showed premature spline wear within just 20,000 kilometers of operation.

After receiving our product samples and verifying the hardness test reports, the client placed their first bulk order. We delivered all 200 input shafts within 18 days, packed in moisture-proof neutral boxes ready for redistribution. Three months later, not a single warranty claim came back. The client has since reordered twice, expanding their order to include other SINOTRUK HW Series Gearbox components such as countershafts, synchronizer assemblies, and output flanges.

This is exactly the kind of long-term partnership we build at Mettlead — reliable parts, honest communication, and consistent quality that makes your business grow.

Frequently Asked Questions – Input Shaft WG2210020101

What gearbox models does Input Shaft WG2210020101 fit?

The Input Shaft WG2210020101 is designed for the SINOTRUK HW Series Gearbox family, including the HW19710, HW15710, and HW19712 transmission models. These gearboxes are widely used in HOWO, SITRAK, and other SINOTRUK heavy-duty truck platforms.

How can I verify that WG2210020101 is the correct part number for my gearbox?

You can verify by checking the nameplate on your gearbox housing or consulting the original parts catalog for your specific truck model. If you are unsure, send us your gearbox model number and VIN — our technical team will confirm the correct input shaft part number for you within hours.

What material is this input shaft made from, and how is it treated?

This input shaft is forged from high-strength alloy steel. It then undergoes carburizing and quenching heat treatment, which produces a hard, wear-resistant surface (HRC 58–62) while maintaining a tough, impact-resistant core (HRC 30–38). This combination ensures the shaft handles high torque loads without cracking or premature wear.

What are common signs that the input shaft needs replacement?

Typical symptoms include abnormal rattling or whining noises from the gearbox at idle, difficulty engaging first or reverse gear, excessive vibration during acceleration, and visible wear or pitting on the spline teeth during inspection. If these symptoms appear, inspecting and replacing the Input Shaft WG2210020101 early prevents more expensive damage to surrounding gears and bearings.

Can I order Input Shaft WG2210020101 with custom branding on the packaging?

Absolutely. Mettlead offers white-label and custom packaging for all our gearbox components. You can provide your own brand name, logo, and part numbering system, and we will print everything on professional-grade packaging that is ready for retail or wholesale distribution.

What is the typical lead time for bulk orders?

For standard stocked items like the Input Shaft WG2210020101, lead time is typically 7 to 15 business days depending on order quantity. Larger custom orders may require 20 to 25 days. We always confirm the exact timeline before you place your order.

Ready to Source Input Shaft WG2210020101? Let Us Talk.

You have read the specs, seen the quality standards, and understand exactly how this input shaft fits your SINOTRUK HW Series Gearbox applications. Now it is time to take the next step.

Here is what happens when you reach out:

1. You send us your inquiry with quantity, destination country, and any packaging requirements.
2. Our sales team replies within 12 hours with a detailed quotation including FOB/CIF pricing.
3. We confirm production timeline and arrange secure payment through flexible methods (T/T, L/C, Trade Assurance).
4. Your Input Shaft WG2210020101 order ships on schedule, fully inspected and professionally packed.

It really is that straightforward. No hidden fees, no quality surprises, no communication delays.

Contact Mettlead now to request your quotation for Input Shaft WG2210020101 — and discover why procurement managers across 30+ countries trust us as their go-to source for SINOTRUK gearbox parts.

We also welcome factory visits at our China facility. Come see our production lines, quality testing equipment, and warehousing operations firsthand. Your confidence is our priority.