The Shacman Rubber Buffer Block, identified by the OEM part number DZ93259590003, is a crucial suspension component designed to absorb impacts, reduce noise, and protect structural integrity in heavy-duty trucks. This engineered rubber block acts as a secondary suspension stop, preventing metal-to-metal contact between the axle and chassis frame during extreme compression events. By cushioning these impacts, the DZ93259590003 minimizes stress on the suspension system, enhances ride comfort, and extends the lifespan of other expensive driveline components. Specifically designed for Shacman truck models, this genuine part ensures a perfect fit and optimal performance under the most demanding operating conditions.
Constructed from high-grade, durable rubber compounds, the buffer block is engineered to withstand constant compression, shear forces, and exposure to harsh environmental elements like oil, road salt, and temperature extremes. Its primary function is to limit the upward travel of the axle, providing a controlled and resilient stop that softens the blow when a truck encounters deep potholes, uneven terrain, or carries maximum payload. The DZ93259590003 is not just a simple bumper; it is a vital safety and durability component that contributes to vehicle stability, cargo protection, and overall driving safety for fleet operators and owner-drivers.
| Parameter | Specification |
|---|---|
| OEM Part Number | DZ93259590003 |
| Component Name | Rubber Buffer Block (Jounce Bumper) |
| Brand | Shacman |
| Primary Material | High-Density, Oil-Resistant Natural/Synthetic Rubber Blend |
| Shape/Design | Cylindrical or Rectangular Block with Mounting Hole |
| Dimensions (Approx.) | Height: 80mm, Width: 100mm, Depth: 80mm (Varies) |
| Hardness (Shore A) | 70 – 80 Durometer (Balancing Flexibility & Rigidity) |
| Mounting Method | Bolts onto Chassis Frame or Suspension Bracket |
| Operating Temperature | -40°C to +100°C |
| Compatibility | Shacman F2000, F3000, X3000 Series Rear Suspension |
The DZ93259590003 serves as a critical travel limiter in the suspension system. When a truck’s springs compress fully under heavy load or impact, this buffer block contacts the axle or suspension arm, providing a cushioned stop. This prevents the metal components from colliding with excessive force.
By absorbing and dissipating impact energy, it protects the main leaf springs or air springs from over-compression damage. It also safeguards the chassis frame from cracking or deformation caused by repeated metal-to-metal pounding.
The buffer significantly reduces noise and harsh vibrations transmitted to the cabin when the suspension bottoms out. This improves driver comfort and reduces fatigue during long hauls over rough roads.
A functional buffer block helps maintain consistent suspension geometry during extreme maneuvers. By preventing uncontrolled suspension bottoming, it contributes to better tire contact with the road, aiding stability and braking performance.
It also plays a role in protecting the cargo. Sudden, jarring impacts can damage fragile loads. The cushioning effect of the DZ93259590003 helps soften these events, reducing the risk of cargo shift or damage.
The rubber compound used in the DZ93259590003 is specifically formulated for automotive suspension duty. It contains additives for resistance to ozone, oxidation, and ultraviolet (UV) radiation, preventing premature cracking and hardening.
Its oil and grease resistance is crucial due to its location near driveline components. The material will not swell or degrade when exposed to occasional splashes of hydraulic fluid, engine oil, or diesel fuel.
The block is designed with a specific hardness (Shore A) that provides an optimal balance. It is soft enough to cushion effectively but firm enough to provide a definitive stop without bottoming out too easily.
This buffer block performs reliably across a wide temperature spectrum. In freezing cold, it retains its elasticity to prevent becoming brittle and shattering. In desert heat, it resists becoming overly soft and losing its shape.
The material has excellent fatigue resistance, capable of enduring millions of compression cycles over its service life without significant loss in height or damping performance. This ensures long-term protection.
The DZ93259590003 is typically mounted on the chassis frame rail, directly above the rear axle housing or suspension lift axle. Its positioning is precise, calculated to engage the axle at the exact point of maximum safe suspension compression.
On some Shacman models, it may also be found on the front suspension or attached to the leaf spring assembly itself. The mounting is straightforward, usually involving one or two bolts through a reinforced metal insert within the rubber block.
It is a standard component on multi-axle trucks and those with heavy-duty suspension packages designed for construction and mining applications, where extreme loads and terrain are common.
The exact dimensions and mounting style of the DZ93259590003 are tailored for specific Shacman truck series. Using the correct OEM part ensures the proper clearance and engagement point, which is critical for effective operation.
A buffer block that is too tall or too short will not function as intended, either engaging too early (restricting normal suspension travel) or too late (failing to prevent metal contact). Genuine parts guarantee the designed performance.
The rubber buffer block requires no routine maintenance but should be inspected regularly during scheduled service intervals. Technicians should look for signs of excessive wear, cracking, splitting, or permanent deformation (flattening).
Replacement is recommended if the block shows deep cracks, has lost more than 25% of its original height, or has separated from its metal mounting insert. Driving with a failed buffer block exposes the suspension to damage.
Installation of the new DZ93259590003 is simple: remove the old bolts, clean the mounting surface, position the new block, and secure it with the specified torque. No special tools or alignment is typically required.
A loud, metallic “clunk” or “bang” from the rear when hitting bumps is the most common symptom. This indicates the suspension is traveling beyond its limit and metal parts are contacting each other directly.
Increased vibration and a harsher ride quality, especially when laden, can also point to a failed buffer. Visual inspection during a service will quickly confirm its condition.
For dump trucks and tippers, the buffer block is essential during the unloading cycle. As the body lifts, the chassis frame can rise relative to the axle, and the block prevents over-extension and impact upon lowering.
In off-road and mining applications, where potholes and uneven ground are constant, the DZ93259590003 works continuously to absorb shocks, protecting the vehicle’s structure from fatigue failure.
On highways, it provides a safety margin during emergency maneuvers or when encountering sudden dips and expansion joints at high speed, ensuring suspension control is maintained.
This small, inexpensive component prevents disproportionately expensive damage. Replacing a worn DZ93259590003 costs far less than repairing cracked spring hangers, a bent axle, or a fatigued chassis frame.
By reducing stress on the suspension, it extends the service life of leaf springs, shock absorbers, and U-bolts. This leads to lower overall maintenance costs and less unscheduled downtime for the truck.
For fleet managers, proactive replacement of buffer blocks during major services is a cost-effective strategy to enhance vehicle reliability and protect the asset value of the entire truck.
A well-cushioned ride is a key factor in driver satisfaction. By eliminating harsh bottoming impacts, the buffer block contributes to a less fatiguing driving experience, which can aid in driver retention for fleets.
Reduced cabin noise and vibration also create a more professional and comfortable working environment, which is increasingly important for long-haul operations.
Every Shacman DZ93259590003 buffer block is produced under stringent quality controls. The rubber compound is mixed to precise recipes and tested for physical properties like tensile strength, elongation, and compression set.
The molding process ensures consistent density and dimensions. Each batch is subject to sample testing where blocks are compressed repeatedly to simulate years of service, verifying their durability.
The metal insert is bonded to the rubber during vulcanization, creating a permanent, inseparable connection that can withstand high shear forces without pulling out. This bond is critical for reliable performance.
Genuine Shacman parts like the DZ93259590003 are engineered as an integrated component of the suspension system. Their performance characteristics are matched to the vehicle’s weight, spring rates, and intended use.
Aftermarket buffers may use inferior rubber that hardens quickly, loses shape, or cracks. Their dimensions might also be slightly off, leading to improper engagement and reduced protection.
Investing in the genuine part ensures you receive the exact material quality, dimensional accuracy, and durability that Shacman engineers specified to protect your truck. It is a simple choice for long-term reliability.
The Shacman Rubber Buffer Block, OEM number DZ93259590003, is an unsung hero of the suspension system. Its role in absorbing impact, protecting structural components, and improving ride quality is vital for any heavy-duty truck operating under load.
Regular inspection and timely replacement of this affordable part is one of the most cost-effective maintenance practices to prevent costly collateral damage and ensure vehicle safety and longevity.
For accurate part identification, compatibility confirmation, or to source this essential component, please use the contact methods provided. Secure the foundation of your truck’s suspension with genuine Shacman quality.
