Product Introduction

Structure: Precision machined from high-strength 40Cr alloy steel, featuring an external involute tooth profile (20 teeth) designed for meshing with the oil pump internal gear ring. The inner bore has 16 splines for engagement with the transmission countershaft, which drives the gear directly.

Performance: The high-frequency quenched tooth surface resists wear during long-term meshing with the internal gear ring, maintaining consistent oil pressure for over 50,000 hours of operation. The precision-ground tooth profile ensures uniform meshing, preventing pressure fluctuations and ensuring stable lubrication flow to transmission components. The splined inner bore provides a secure drive connection to the countershaft, eliminating slippage even under peak pump loads.

Core Function

1. Oil pressure generation: As the rotating component of the gerotor pump, it meshes with the fixed internal gear ring to create variable-volume chambers, drawing oil from the sump and pressurizing it for transmission lubrication.

2. Direct countershaft drive: Driven directly by the transmission countershaft, ensuring pump speed is synchronized with transmission input for proportional oil pressure delivery.

3. Stable pressure output: The precision-machined tooth profile ensures uniform oil pressure (0.2–0.6 MPa) across all operating conditions, preventing lubrication starvation or excessive pressure.

Oil Pump Driving Gear AZ2210240001 – SINOTRUK HW Series Gearbox Parts

When your SINOTRUK HW series gearbox demands reliable lubrication, every tooth on the oil pump driving gear matters. The Oil Pump Driving Gear AZ2210240001 is engineered to deliver consistent oil pressure, ensuring that your transmission components stay protected under heavy loads. As a factory-direct supplier, Mettlead brings you this genuine-spec gearbox part at competitive wholesale pricing — so you can maintain healthy margins while keeping your customers’ fleets on the road.

Why This Oil Pump Driving Gear Matters for Your Business

The oil pump driving gear sits at the heart of the HW series gearbox lubrication system. It meshes directly with the driven gear to circulate transmission oil, preventing metal-on-metal wear and overheating. Without a properly functioning driving gear, the entire gearbox faces premature failure — and that means costly downtime for fleet operators.

For wholesale distributors and agents, stocking the AZ2210240001 oil pump driving gear means offering your customers a high-demand, fast-moving replacement part. Here is what makes this product a smart addition to your inventory:

• OEM-Spec Precision: Manufactured to match original SINOTRUK specifications, ensuring seamless fitment and reliable gear meshing within the HW transmission oil pump assembly.
• Superior Material Durability: Crafted from high-strength alloy steel with heat treatment, this driving gear resists wear, pitting, and fatigue even under continuous heavy-duty operation.
• Consistent Oil Flow Performance: The gear tooth profile is precision-machined to maintain stable oil pressure across varying RPMs, protecting bearings, synchronizers, and shaft components.
• Competitive Wholesale Pricing: Factory-direct sourcing eliminates middlemen, giving you better profit margins on every unit sold.
• Flexible MOQ and Custom Packaging: Whether you need white-label packaging for your own brand or bulk quantities for distribution, Mettlead adapts to your business needs.

Technical Specifications – Oil Pump Driving Gear AZ2210240001

Accuracy is everything when sourcing gearbox components. Below you will find the key parameters for this SINOTRUK HW series oil pump driving gear:

Application Scenario – Where Does This Oil Pump Driving Gear Fit?

The Oil Pump Driving Gear AZ2210240001 is specifically designed for the oil pump assembly inside the SINOTRUK HW series gearbox. In simple terms, it is the component that drives the oil pump to circulate lubricating oil throughout the transmission.

This part is commonly found in the following applications:

• Compatible Vehicles: SINOTRUK HOWO heavy-duty trucks, SITRAK series trucks, and other vehicles equipped with HW series transmissions.
• Compatible Gearbox Types: HW19710, HW19712, HW15710, HW20716, and related HW series manual transmissions.
• Function: The driving gear connects to the gearbox input or countershaft, transferring rotational power to the oil pump driven gear. Together, they create the pressure needed to lubricate internal gearbox components including bearings, synchronizer rings, and gear faces.

If your customers operate SINOTRUK fleets in mining, long-haul logistics, or construction, this oil pump driving gear is a routine maintenance and replacement item they will need regularly. Stocking it means fewer backorders and faster turnaround for your workshop clients.

Explore more transmission components in our Gearbox Parts Category and our dedicated SINOTRUK HOWO Gearbox Parts page for a complete product listing.

OEM/ODM Capability and White-Label Service

At Mettlead, we understand that distributors and agents often need more than just parts — you need a supply partner who can support your brand growth. That is exactly what we offer:

• White-Label Packaging: We can package the Oil Pump Driving Gear AZ2210240001 under your own brand name, complete with custom labels and box printing, so your business identity stays front and center.
• Custom Packaging Solutions: Whether you prefer individual poly bags, branded cartons, or bulk pallet packaging for large orders, we accommodate your requirements.
• Strict Quality Control: Every oil pump driving gear undergoes dimensional inspection, hardness testing, and surface quality checks before shipment. We reject parts that do not meet OEM-equivalent standards — no exceptions.
• Flexible MOQ: We work with both small-volume trial orders and large container shipments, making it easy for new distributors to test the market before scaling up.
• Complete Product Range: Beyond this single gear, we supply the full spectrum of SINOTRUK HOWO Truck Parts — from engine components to chassis parts — allowing you to consolidate your sourcing with one reliable supplier.

Customer Case Study – Oil Pump Driving Gear AZ2210240001 for East African Distributor

Earlier this year, a truck parts distributor based in Kenya reached out to Mettlead looking for a reliable source of SINOTRUK HW gearbox parts. Their local market had a growing fleet of HOWO trucks used in construction and cargo transport, and gearbox oil pump failures were among the most common repair issues they encountered.

After receiving a sample batch of the Oil Pump Driving Gear AZ2210240001, their quality team confirmed that the gear met OEM dimensional tolerances and hardness requirements. They placed an initial order of 200 pieces with custom-branded packaging. Within three months, they reordered — this time doubling the quantity — because the part moved fast and generated zero warranty claims.

Today, this distributor sources over 15 different SINOTRUK HW series gearbox components from Mettlead, including oil pump driven gears, synchronizer assemblies, and bearing kits. The factory-direct pricing gives them a healthy margin, and the consistent quality has strengthened their reputation in the local aftermarket.

If you are looking to achieve similar results in your market, we would love to hear from you.

Frequently Asked Questions – Oil Pump Driving Gear AZ2210240001

What is the function of the oil pump driving gear in a SINOTRUK HW gearbox?

The oil pump driving gear is the active component that transfers rotational force from the gearbox shaft to the oil pump mechanism. As it turns, it meshes with the driven gear to create the suction and pressure necessary to circulate lubricating oil. Without it, the gearbox internals would overheat and wear prematurely due to lack of lubrication.

How do I know if the AZ2210240001 oil pump driving gear needs replacement?

Common signs include low transmission oil pressure warnings, unusual noise from the gearbox oil pump area, metal debris in the transmission oil filter, and visible wear or chipping on the gear teeth during inspection. If the gearbox temperature rises abnormally during operation, a worn driving gear could be the root cause.

Is this oil pump driving gear compatible with all SINOTRUK HW gearbox models?

The AZ2210240001 is designed for the HW series gearbox family, including models such as HW19710, HW19712, HW15710, and HW20716. However, because SINOTRUK has produced various HW sub-variants over the years, we recommend confirming the OEM part number with your customer’s gearbox nameplate before ordering.

What material is used for this driving gear, and how durable is it?

This gear is made from high-strength alloy steel and undergoes carburizing and quenching heat treatment. The tooth surface reaches a hardness of HRC 58–62, which provides excellent resistance to pitting, wear, and fatigue — comparable to OEM original parts in longevity.

Can I order this part with my own brand packaging?

Absolutely. Mettlead offers full white-label and custom packaging services. You can have the Oil Pump Driving Gear AZ2210240001 shipped with your own brand name, logo, and part number labels. Just share your packaging design requirements, and our team will handle the rest.

What is the minimum order quantity for wholesale buyers?

We offer flexible MOQs to suit different business stages. For trial orders, we can accommodate smaller quantities so you can test market demand. For established distributors placing regular orders, we offer volume-based pricing that further improves your margins. Reach out to our sales team for a tailored quotation.

Ready to Source Oil Pump Driving Gear AZ2210240001 at Factory-Direct Pricing?

Whether you are building your SINOTRUK parts inventory from scratch or looking for a more reliable supplier for your existing product line, Mettlead is here to support your growth. We combine competitive pricing, strict quality control, and flexible logistics to make your sourcing simple and profitable.

Take the next step today:

• Request a wholesale quotation for the Oil Pump Driving Gear AZ2210240001
• Ask about our full range of SINOTRUK HW gearbox parts
• Discuss white-label packaging and custom branding options
• Inquire about sample orders to verify quality before committing to volume

Contact Us Now to get your personalized quote and start building a stronger parts supply chain with Mettlead. We typically respond within 24 hours with pricing, availability, and shipping options tailored to your destination.