Product Introduction

This hub reduction gear is a key component of the rear axle’s hub reduction system, designed to mesh with the driven gear in the hub housing, further reducing rotational speed and increasing torque delivered to the wheel.

Structure & Material

• Material: High-strength alloy steel, heat-treated (carburized & quenched) for high surface hardness and core impact resistance.

• Design: A spur gear with external teeth (for meshing with the hub reduction driven gear) and internal splines (for connecting to the axle shaft extension). Precision-machined teeth ensure efficient power transfer.

Performance

• Torque Multiplication: Works with the hub reduction driven gear to increase torque (via gear ratio) at the wheel.

• Speed Reduction: Reduces rotational speed from the axle shaft to the wheel, optimizing heavy-load performance.

• Smooth Meshing: Precision teeth minimize noise and wear during operation.

Durability

• Heat-treated alloy steel resists tooth wear, pitting, and deformation under high torque loads.

• Corrosion-resistant coating protects against environmental damage (moisture, road debris).

Core Function

1. Secondary Torque Boost: Provides additional torque at the wheel via the hub reduction gear set.

2. Speed Optimization: Reduces wheel speed for improved heavy-load traction.

3. Power Transfer: Transmits torque from the axle shaft to the hub’s driven gear.

Rear Axle Hub Reduction 81.35113.0044 for Shacman Trucks – OEM-Quality Planetary Gear Assembly

When your Shacman heavy-duty truck demands reliable torque multiplication at the wheel end, the Rear Axle Hub Reduction 81.35113.0044 delivers exactly that. Engineered to match OEM specifications, this planetary hub reduction assembly reduces speed while amplifying torque — giving your vehicle the traction it needs to haul heavy loads across demanding terrain. Whether you’re maintaining a fleet or sourcing parts for resale, this component keeps your Shacman trucks moving with confidence.

At Mettlead, we supply this genuine-spec hub reduction unit directly from our factory in China, which means you get competitive pricing without sacrificing quality. As a dedicated supplier of Shacman truck parts and other leading Chinese commercial vehicle brands, we understand what procurement managers need: accurate parts, fair prices, and fast delivery.

Key Features and Benefits of the 81.35113.0044 Hub Reduction

This rear axle hub reduction isn’t just a replacement part — it’s a performance-critical component that directly affects your truck’s pulling power and drivetrain longevity. Here’s what makes it stand out:

• Precision Torque Multiplication: The internal planetary gear set multiplies torque at the wheel end, effectively reducing stress on the main differential and half shafts. This translates to longer drivetrain life and smoother power delivery under load.
• OEM-Matched Dimensions: Manufactured to match the original 81.35113.0044 specification, so installation is straightforward with no modifications required. It bolts right in, saving your workshop valuable time.
• Heat-Treated Gears: The sun gear, planet gears, and ring gear undergo carburizing and hardening processes to resist pitting, spalling, and premature wear — even under sustained heavy-load conditions.
• Enhanced Traction Output: By reducing rotational speed and increasing torque at the hub, this assembly significantly improves traction. That’s especially critical for trucks operating on unpaved roads, steep grades, or in mining and construction environments.
• Sealed Bearing Design: High-quality bearings within the assembly are sealed to prevent contamination from dust, water, and debris, extending service intervals and reducing maintenance costs.
• Cost-Effective Factory-Direct Pricing: Because Mettlead sources directly from certified manufacturers, you avoid middleman markups while still receiving parts that pass strict quality control inspections.

Application and Compatible Vehicle Models

The Rear Axle Hub Reduction 81.35113.0044 is specifically designed for Shacman (SHAANXI) heavy-duty trucks. It serves as the wheel-end planetary reduction unit in the rear axle assembly, where its primary function is speed reduction and torque amplification — ultimately enhancing the vehicle’s traction force for demanding hauling operations.

Fitment includes:

• Shacman F3000 series heavy-duty trucks
• Shacman X3000 series tractor and dump trucks
• Shacman H3000 series logistics and construction vehicles
• Other Shacman models equipped with hub-reduction rear axles

This component is ideal for trucks engaged in long-haul freight, mining transport, construction material delivery, and any application where maximum traction under heavy payloads is essential. If you need parts for other rear axle components, explore our full rear axle parts catalog for additional options.

Technical Specifications

OEM and ODM Capabilities

Mettlead doesn’t just sell parts — we partner with distributors, fleet operators, and aftermarket brands worldwide. Our flexible manufacturing and sourcing network allows us to offer:

• White-Label Packaging: Want to sell under your own brand? We provide neutral or custom-branded packaging tailored to your market requirements.
• Custom Packaging Solutions: From individual retail boxes to bulk pallet shipments, we adapt packaging to protect parts during transit and meet your branding standards.
• Strict Quality Control: Every hub reduction unit undergoes dimensional inspection, gear mesh verification, and surface hardness testing before it leaves our facility.
• Flexible Order Quantities: Whether you need a single sample for testing or a container load for your warehouse, we accommodate orders of all sizes.
• Factory Visits Welcome: We encourage serious buyers to visit our facilities in China. Seeing our quality processes firsthand builds the trust that long-term partnerships require.

Browse our complete range of Shacman brand parts to discover additional components we can supply alongside this hub reduction assembly.

Frequently Asked Questions

What exactly does a rear axle hub reduction do?

A hub reduction — also called a wheel-end planetary reducer — sits inside the wheel hub and uses a set of planetary gears to reduce rotational speed while multiplying torque. In simple terms, it makes the wheel turn slower but with much greater force. This is why hub-reduction axles are preferred on heavy-duty trucks that need maximum traction for hauling or off-road work.

How do I confirm that part number 81.35113.0044 fits my specific Shacman truck?

The most reliable method is to check your truck’s original parts catalog or the number stamped on your existing hub reduction housing. If you’re unsure, send us your vehicle’s VIN or chassis number along with a photo of the old part, and our technical team will verify compatibility for you.

What are the signs that my hub reduction needs replacement?

Common symptoms include unusual grinding or whining noises from the wheel area, excessive play or looseness in the wheel hub, oil leakage around the hub seal, and overheating at the wheel end. If left unaddressed, a failing hub reduction can damage the axle shaft, bearings, and even the brake assembly.

Is this an original Shacman part or an aftermarket replacement?

This is a brand-new aftermarket unit manufactured to OEM specifications. It matches the original 81.35113.0044 dimensions, material grades, and performance standards. Every piece passes our quality control process to ensure it performs identically to the factory-installed component.

What lubrication does the hub reduction require?

Hub reduction assemblies typically require heavy-duty gear oil (commonly GL-5 grade, 85W-90 or as specified in your Shacman service manual). Proper oil level and regular oil changes are critical — the planetary gears rely on adequate lubrication to prevent overheating and premature wear.

Can I order just the internal gear set, or must I buy the complete assembly?

We supply the complete hub reduction assembly under part number 81.35113.0044. However, if you need individual internal components such as planet gears, sun gears, or bearings, please contact us with your specific requirements and we’ll check availability.

Ready to Source Your Shacman Hub Reduction?

Getting the right part at the right price shouldn’t be complicated. At Mettlead, we make it simple: tell us what you need, and we’ll respond with pricing, lead time, and shipping options — typically within 24 hours.

Here’s how to get started:

1. Click the button below or visit our contact page to submit your inquiry.
2. Include the part number (81.35113.0044), your required quantity, and destination country.
3. Our team will reply with a competitive quote, available payment methods, and estimated delivery time.

We offer flexible and secure payment options, reliable international shipping, and dedicated support from a team that knows Chinese truck parts inside and out. Whether you’re restocking your warehouse or sourcing a single unit for an urgent repair, Mettlead is your dependable partner for Shacman truck parts and beyond.

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