Product Introduction

This rear brake camshaft DZ9112340139 is a precision-forged OEM rear brake camshaft for heavy duty trucks, engineered to actuate brake shoes in commercial vehicle drum brake systems. It features a high-strength alloy steel core, precision-machined cam profile, and corrosion-resistant black finish, built to deliver reliable, consistent braking force in heavy-load operations.

Performance

• High-Strength Forging: This heavy duty rear brake camshaftis forged from high-grade alloy steel, offering exceptional resistance to bending, torsion, and fatigue under extreme braking forces as a high performance rear brake camshaft.

• Precision Machining: The precision-ground cam profile ensures smooth, uniform actuation of brake shoes, eliminating uneven wear and maintaining consistent braking performance.

• Corrosion Resistance: The black finish provides excellent protection against rust, road salt, and moisture, extending service life in harsh undercarriage environments and making it a reliable replacement rear brake camshaft.

• Wide Compatibility: Designed to fit most heavy-duty truck rear brake systems, it is ideal as a rear brake camshaft for commercial vehicles.

Core Function

1. Converts rotational motion from the slack adjuster into linear force to actuate brake shoes, a critical part of heavy duty truck brake parts.

2. Ensures uniform force distribution across brake shoes, preventing uneven wear and maintaining consistent braking performance under heavy loads.

3. Resists fatigue and deformation, ensuring reliable operation over millions of braking cycles.

4. Fully OEM-compatible for seamless replacement, restoring the actuation function of the rear brake system.

Rear Brake Camshaft DZ9112340139 for SHACMAN Heavy Duty Trucks

When your fleet depends on reliable stopping power under extreme loads, every component in the braking system matters. The Rear Brake Camshaft DZ9112340139 is a precision-forged OEM replacement part engineered specifically for SHACMAN heavy duty trucks. Built from high-strength alloy steel with a corrosion-resistant black finish, this camshaft actuates brake shoes with consistent force and accuracy — ensuring your drum brake system performs exactly as it should, load after load, mile after mile.

At Mettlead, we supply this genuine-spec rear brake camshaft directly from our factory in China, which means you get OEM-quality performance at a competitive factory-direct price. Whether you’re managing a fleet maintenance schedule or sourcing brake system components for your workshop, this camshaft delivers the durability and dimensional precision that heavy commercial vehicles demand.

Key Features and Benefits of the DZ9112340139 Rear Brake Camshaft

Precision-Engineered for Consistent Braking Performance

This rear brake camshaft isn’t just a metal rod — it’s the critical link between your brake actuator and brake shoes. The cam profile is precision-machined to ensure uniform shoe expansion across the entire drum surface. As a result, you get even wear distribution and predictable braking force every single time the driver hits the pedal.

• High-Strength Alloy Steel Core — Resists bending and fatigue under repeated high-torque braking cycles, extending service life significantly compared to inferior aftermarket alternatives.
• Precision-Machined Cam Profile — Guarantees accurate brake shoe actuation, which translates directly into shorter stopping distances and smoother brake engagement.
• Corrosion-Resistant Black Finish — Protects against rust and environmental degradation, particularly important for trucks operating in humid, coastal, or salt-road conditions.
• OEM Dimensional Accuracy — Manufactured to original equipment specifications, so installation is straightforward with no modifications required.
• Heavy-Load Rated — Designed to handle the braking demands of fully loaded SHACMAN trucks operating in mining, construction, and long-haul logistics.

Why Procurement Managers Choose This Camshaft

For purchasing professionals managing fleet parts budgets, this component offers an ideal balance of cost efficiency and reliability. Because we ship factory-direct, you eliminate middleman markups without sacrificing quality. Moreover, our strict quality control process means fewer warranty claims and less unplanned downtime for your vehicles.

Technical Specifications

Application Scenarios

Compatible Vehicles

This Rear Brake Camshaft DZ9112340139 is specifically designed for SHACMAN heavy duty truck models equipped with rear drum brake systems. It serves as a direct-fit replacement for the original camshaft in the rear braking assembly.

When to Replace Your Rear Brake Camshaft

Over time, the rear brake camshaft endures thousands of braking cycles under heavy loads. Eventually, wear and fatigue take their toll. Here are the most common scenarios that call for replacement:

• Worn Cam Lobes — When the cam profile wears down, brake shoes no longer expand fully, leading to reduced braking efficiency and longer stopping distances.
• Camshaft Seizure — Corrosion or lack of lubrication can cause the camshaft to seize in its bushing, resulting in uneven braking or complete brake failure on one wheel.
• Visible Surface Damage — Pitting, scoring, or cracks on the cam surface indicate the part has reached end of life and must be replaced immediately.
• Scheduled Preventive Maintenance — Many fleet operators replace brake camshafts at defined mileage intervals to prevent unexpected failures during operation.

Explore more braking system components or browse our full range of SHACMAN truck parts to find everything you need in one place.

OEM/ODM Capability

Mettlead understands that different markets have different requirements. That’s why we offer flexible customization options alongside our standard OEM-spec parts:

• White-Label Packaging — Receive parts in neutral packaging, ready for your own branding and distribution channels.
• Custom Packaging — We can produce packaging with your company logo, part numbers, and branding guidelines for a professional market presence.
• Strict Quality Control — Every rear brake camshaft undergoes dimensional inspection, hardness testing, and surface quality checks before shipment.
• Bulk Order Support — Whether you need 50 pieces or 5,000, our production capacity scales to meet your procurement timeline.
• Factory Visits Welcome — We invite buyers to visit our facility in China to inspect production processes and quality systems firsthand.

For a comprehensive overview of all available SHACMAN components, visit our SHACMAN truck parts catalog.

Frequently Asked Questions

What is the function of the rear brake camshaft DZ9112340139?

The rear brake camshaft acts as the mechanical lever that pushes brake shoes outward against the drum when the brake is applied. Specifically, the DZ9112340139 converts the rotational input from the brake slack adjuster into the linear force needed to expand the shoes. Without a properly functioning camshaft, your rear brakes simply cannot generate adequate stopping force.

How do I know if my SHACMAN truck’s rear brake camshaft needs replacement?

Several symptoms point to a worn or failing camshaft. You might notice uneven braking between the left and right rear wheels, excessive brake pedal travel, grinding noises during braking, or one wheel locking up before the other. Additionally, if your brake adjustment keeps going out of spec quickly, a worn cam profile is often the culprit.

Is this camshaft compatible with all SHACMAN truck models?

The DZ9112340139 is designed for SHACMAN heavy duty trucks that use this specific part number in their rear drum brake assembly. To confirm fitment for your exact model and year, we recommend cross-referencing the OEM part number with your vehicle’s parts catalog or contacting our team directly.

What material is the DZ9112340139 rear brake camshaft made from?

This camshaft is forged from high-strength alloy steel, which provides excellent resistance to bending fatigue and torsional stress. The alloy composition is selected specifically to withstand the repeated high-force cycles that rear brake camshafts experience in heavy duty applications. Furthermore, the black surface finish adds a layer of corrosion protection.

Can I order this rear brake camshaft with custom packaging?

Absolutely. Mettlead offers neutral packaging, white-label options, and fully customized packaging with your brand identity. This flexibility is particularly valuable for distributors and wholesalers who want to maintain consistent branding across their product lines.

How does the precision-machined cam profile affect braking performance?

The cam profile geometry directly determines how evenly and forcefully the brake shoes press against the drum. A precisely machined profile ensures both leading and trailing shoes engage simultaneously and with equal pressure. In contrast, a poorly machined or worn profile causes uneven shoe contact, which leads to hot spots, premature drum wear, and inconsistent stopping power.

Get Your Rear Brake Camshaft DZ9112340139 — Request a Quote Today

Ready to secure competitive pricing on the Rear Brake Camshaft DZ9112340139 for SHACMAN trucks? Our team responds to inquiries quickly with detailed quotations, lead times, and shipping options tailored to your location and order volume.

Whether you need a single piece for an urgent repair or bulk quantities for inventory replenishment, Mettlead delivers factory-direct quality with the reliability your business depends on.

Contact us now to get your personalized quote, discuss volume discounts, or ask any technical questions about this rear brake camshaft. Our parts specialists are standing by to help you keep your fleet moving safely.