Core Product Function
DZ9112340097 is an exclusive rear brake back plate for SHACMAN F3000 series heavy-duty trucks, serving as the core load-bearing and positioning component of the vehicle rear axle drum brake system. It bears and distributes the braking force generated during braking, provides fixed mounting positions for brake shoes, wheel cylinders, return springs and other brake components, and ensures the precise movement and stable meshing of the entire brake assembly. The product features high structural strength and excellent impact resistance, effectively maintains the integrity of the brake system under heavy-load braking and complex road vibration, and adapts to harsh working conditions such as heavy-duty transportation, frequent braking, long downhill driving and construction site operation of heavy-duty trucks.
Adaptability and Compatibility
Applicable Vehicles: SHACMAN F3000 series heavy-duty trucks (tractors, dump trucks, cargo transport vehicles, special-purpose engineering vehicles)
Adaptable Systems: Original factory rear axle drum brake system, matching with brake shoe assembly, wheel cylinder, brake drum, brake shoe roller with pin and return spring
OE Reference Number: DZ9112340097
Interchangeability: Direct replacement of original factory rear brake back plate, precise matching of mounting holes, positioning slots and component installation positions, no need to modify the brake axle housing or brake system structure
Value-added Service: Support vehicle VIN code-based configuration verification, provide professional matching suggestions for rear brake system assembly and maintenance specifications
Key Technical Parameters
Main Dimensions: Overall size 420±3mm×380±3mm, thickness 12±0.5mm; mounting hole quantity 8 pcs, hole diameter 18±0.2mm, positioning slot width 25±0.1mm; wheel cylinder mounting hole center distance 160±0.5mm, brake shoe shaft mounting hole diameter 20±0.2mm
Material Specification: Q345B high-strength structural steel, one-piece stamping forming, overall anti-corrosion treatment
Rated Bearing Capacity: ≥ 120kN (adapts to heavy-load braking force bearing and distribution needs)
Yield Strength: ≥ 345MPa (no deformation under extreme braking force)
Tensile Strength: 470-630MPa (resists fracture under sudden impact and heavy load)
Operating Temperature Range: -40℃~200℃ (adapts to high temperature generated by continuous braking and extreme low temperature in different regions)
Flatness Tolerance: ≤ 0.5mm/m (ensures tight fit of brake components and stable movement)
Anti-corrosion Performance: Passes 1000-hour neutral salt spray test, no obvious rust or coating peeling
Materials and Processes
Core Materials: Q345B high-strength structural steel (excellent comprehensive mechanical properties, high strength and good impact toughness), high-strength mounting bolts (matching fasteners, anti-loosening and anti-fatigue)
Surface Treatment: Shot blasting (eliminates internal stress, improves surface hardness and fatigue life), electrophoretic coating (30-40μm thick uniform anti-corrosion layer, strong adhesion), finish powder coating (secondary anti-rust and anti-aging, resistant to chassis oil and mud erosion)
Production Process: Precision blanking (steel plate cutting), one-piece stamping forming (CNC large stamping machine, no welding seam, high structural integrity), CNC machining (mounting holes and positioning slots, high dimensional accuracy), shot blasting treatment, electrophoretic + powder double coating, 100% dimensional and flatness inspection before leaving the factory
Production Line Capacity: Equipped with automatic stamping and machining production lines, monthly output ≥ 6000 pieces; self-owned precision molds ensure consistent product size and precision
Quality Grade and Inspection
Quality Grade: High-quality aftermarket parts, fully compliant with SHACMAN original factory technical standards and GB/T 1591-2018 high-strength low-alloy structural steel specifications
Inspection Items: Dimensional accuracy test (CNC coordinate measuring), flatness test, bearing capacity pressure test, impact toughness test, anti-corrosion salt spray test, mounting hole position degree test
Quality System: IATF16949, ISO9001 certified, strict implementation of quality control from raw material incoming inspection, stamping process to finished product delivery
Batch Tracking: Support full batch traceability, each back plate is laser-marked with batch number, production date and OE number on the non-contact surface; complete production and inspection records are retained for 5 years
Service Life and Performance
Average Service Life: ≥ 10 years (or 800,000 kilometers) under normal working conditions and regular maintenance
Performance Improvement: Q345B high-strength steel one-piece stamping, no welding seam, avoids cracking at welds under heavy load; double anti-corrosion coating effectively resists chassis mud, oil and salt spray corrosion, extends service life; high-precision machining ensures precise positioning of brake components, avoids abnormal wear and brake deviation; high flatness ensures smooth movement of brake shoes, improves braking response speed
Harsh Environment Adaptation: Resists -40℃ extreme low temperature without brittle fracture; withstands 200℃ high temperature generated by long downhill continuous braking without coating aging and structural deformation; adapts to dusty construction sites, muddy rural roads and coastal salt spray areas; no deformation, cracking or rust under long-term heavy-load braking and vehicle chassis vibration
Fault Improvement and Replacement Value
Common Fault Improvement: Solves the problems of the original rear brake back plate such as deformation under heavy load, welding seam cracking, coating peeling and rust, mounting hole wear and positioning deviation caused by low material strength and poor process
Maintenance Value: Direct assembly replacement without disassembling the entire rear axle brake system, reducing maintenance time by 35%; long service life reduces replacement frequency and maintenance costs; high structural strength ensures the stability of the brake system, avoids secondary damage to brake components caused by back plate deformation, and improves driving safety
Packaging and Marking
Packaging Configuration: Individual EPE anti-collision foam wrapping + moisture-proof plastic film + corrugated carton; bulk orders are packed with wooden pallets (fixed with steel straps) to prevent extrusion deformation and coating damage during transportation
Outer Carton Marking: OE number, product name (F3000 Rear Brake Back Plate), applicable vehicle models, quantity, batch number, production date, gross weight, net weight, anti-collision and moisture-proof warning signs
Product Marking: Laser marking of OE number, material grade, rated bearing capacity, batch number and production date on the non-contact surface (clear and wear-resistant, not easy to fall off)
Customization Service: Support neutral packaging or customized packaging with customer brand logo; support customized mounting hole positions and thickness for modified heavy-duty truck models
Supply Capacity
Inventory Status: In-stock supply for SHACMAN F3000 series mainstream models
Minimum Order Quantity (MOQ): 5 pieces (sample order acceptable with MOQ 1 piece)
Delivery Cycle: 3 working days for spot goods; 8-15 working days for bulk customized orders (depending on processing requirements)
Supply Stability: Monthly output ≥ 6000 pieces, stable supply of Q345B steel raw materials, mature production process ensures no delivery delay; sufficient safety stock for emergency maintenance orders
Certification and After-sales Guarantee
Certification Qualifications: IATF16949, ISO9001 certified; compliant with GB/T 1591-2018 national standard; can provide third-party test reports (bearing capacity, anti-corrosion, impact toughness)
Quality Guarantee Policy: 36-month warranty, 7-day free replacement and return for non-human damage (such as natural deformation, coating peeling, rust without external impact and improper use)
Technical Support: 24-hour online technical response, providing installation guidance, component assembly sequence, torque specifications and brake system fault diagnosis solutions
Return and Exchange Policy: Accept return and replacement for non-human damage, freight borne by the supplier; provide fast replenishment service for defective products to minimize vehicle downtime and operation loss
Scenario Cases
Northern China Long-haul Transportation: Applied to SHACMAN F3000 tractors operating in Inner Mongolia and Heilongjiang, withstood -35℃ extreme low temperature and long downhill heavy-load braking, no deformation or rust, service life exceeding 850,000 kilometers
Northwest Construction Site: Used in SHACMAN F3000 dump trucks in Xinjiang and Gansu, resistant to sand and dust erosion, mud impact and extreme temperature difference, no coating peeling and structural cracking, stable braking performance under 50-ton heavy-load operation
Southern China Coastal Area: Adapted to SHACMAN F3000 cargo trucks in Guangdong and Fujian, double anti-corrosion treatment effectively resists salt spray and humid air corrosion, no rust after 7 years of use, brake component positioning remains precise, no brake deviation phenomenon
Maintenance and Precautions
Installation: Clean the contact surface of the rear axle housing and the back plate before installation to remove rust, oil and debris; use new high-strength mounting bolts and lock washers; tighten the bolts in diagonal order according to the specified torque (100-110N·m); ensure the positioning slots are aligned with the brake components, and check the flexible movement of brake shoes after assembly.
Inspection: Check the back plate for deformation, cracking and coating peeling every 40,000 kilometers; check the wear of mounting holes and positioning slots, and re-tighten the loose bolts; clean the surface dirt and mud regularly to avoid scratching the anti-corrosion coating.
Storage: Store in a dry, ventilated and rainproof warehouse, avoid contact with water, oil, acid and alkali corrosive substances; place horizontally on wooden pallets, do not stack heavy objects to prevent extrusion deformation; keep the packaging intact to protect the anti-corrosion coating.
Replacement: Replace the back plate with the same model and specification; replace the left and right rear brake back plates in pairs if necessary to ensure consistent braking performance; after replacement, perform a road test to confirm normal braking, no brake deviation, abnormal noise or slow release.
Frequently Asked Questions (FAQ)
Q1: How to confirm that this rear brake back plate matches my SHACMAN F3000 truck?
A1: You can provide the vehicle VIN code, rear axle model or original brake back plate OE number, and we will verify the compatibility of the back plate's overall size, mounting hole position, positioning slot size with your brake system to ensure perfect fit.
Q2: Why is Q345B steel chosen for this brake back plate instead of ordinary steel?
A2: Q345B high-strength structural steel has much higher yield strength and impact toughness than ordinary carbon steel, which can bear the huge braking force generated by heavy-duty trucks during heavy-load braking without deformation and cracking, and is the OE-specified material for SHACMAN heavy-duty truck brake back plates, fully meeting the harsh working condition requirements.
Q3: Can samples be provided for installation and performance testing?
A3: Yes, sample supply is supported. The sample fee can be fully deducted from the subsequent formal order, and the sample delivery cycle is 2-3 working days.
Q4: What are the key points for installing the rear brake back plate?
A4: The key points are to ensure the flatness of the contact surface between the back plate and the axle housing, tighten the mounting bolts in diagonal order according to the specified torque, and check the free movement of the brake shoes after assembly to ensure no jamming caused by incorrect positioning.
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