Customization:
With corrosion-resistant steel and protective coating, ensure durability in harsh environments*
With adjustable mounting holes and slots, easily customize suspension tension for optimal performance*
With a 45mm width, handle heavy loads up to [X tons]* while maintaining structural integrity*
Designed for DAF F 3300 trucks, providing smooth ride quality and reliability in rugged commercial environments*
With a curved shape and rounded ends, reduce stress concentrations and extend lifespan compared to traditional leaf springs*
The Steel Leaf Spring Mini Sw4b Double Eye Width 45mm is a robust suspension component designed for DAF F 3300 trucks. Crafted from high-carbon steel with a corrosion-resistant coating, it offers superior durability and shock absorption. Its curved shape, rounded ends, and strategically placed mounting holes ensure seamless integration into heavy-duty applications while enabling precise adjustments for optimal performance.
Feature | Specification | Application Scenario |
---|---|---|
Material | High-carbon steel with black oxide coating | Heavy-duty trucks in harsh environments |
Design | Curved leaf shape with double eye width (45mm) | Absorbing shocks in off-road or loaded conditions |
Load Capacity | 5,000 kg (Base Model) to 7,000 kg (Pro) | Supporting payloads in commercial vehicles |
Adjustability | 3–7 adjustable mounting holes | Customizing suspension stiffness |
Corrosion Resistance | Meets ISO 12944-C5-M standard | Prolonged use in humid or corrosive areas |
Adjustable parameters include spring rate, mounting hole spacing, and eye width to meet specific load requirements or suspension geometry needs. For example, increasing the number of mounting holes enhances fine-tuning capabilities for uneven terrain.
Enhance your truck’s suspension with these precision-engineered leaf springs. Whether you need to upgrade for heavy payloads or replace worn components, their rugged design and corrosion-resistant finish ensure reliability in even the toughest conditions.
Parameter | Base Model | Advanced Model | Pro Model |
---|---|---|---|
Corrosion Resistance | ISO 12944-C3 | +20% ISO 12944-C4 | +40% ISO 12944-C5 |
Load Capacity | 5,000 kg | 6,000 kg | +40% 7,000 kg |
Adjustment Holes | 3 positions | 5 positions | 7 positions |
Technical Breakthroughs:
Version Selection Guide:
With the Pro Model’s triple-certified corrosion resistance and enhanced load capacity, you can safely handle abrasive materials like gravel or chemicals. Pair this with its 7-position adjustability to optimize ride height for rugged terrain, ensuring both durability and comfort.
Category | Usage Scenarios | Characteristics | Advantages | Disadvantages |
---|---|---|---|---|
Material Composition | Heavy-duty trucks in corrosive environments | Industry Standard: Steel (ASTM A36) Our Base: Steel (ASTM A36) Our Advanced: Galvanized Steel (ASTM A123) (▲15% corrosion resistance) | Base: Cost-effective, industry-compliant. Advanced: Resists saltwater and chemicals. | Advanced: 20% higher cost due to galvanization. |
Shock Absorption | Off-road vehicles and rough terrain | Industry Standard: 50 dBA Our Base: 43 dBA (▲14% quieter) Our Advanced: 38 dBA (▲12% quieter than Base) | Base: Quieter than standard (quieter than a refrigerator at 45 dBA). Advanced: Smoothest ride for passenger comfort. | Advanced: Slightly heavier, affecting payload capacity. |
Load Capacity | Heavy cargo transport (e.g., trucks) | Industry Standard: 2.5 tons Our Base: 3.0 tons (▲20%) Our Advanced: 3.5 tons (▲16.7% vs Base) | Base: Supports 30% more load than industry norms. Advanced: Handles extreme payloads. | Advanced: Requires reinforced mounting hardware. |
Durability (Corrosion) | Marine or industrial vehicles | Industry Standard: 500 hours salt spray (ASTM B117) Our Base: 800 hours (▲60%) Our Advanced: 1,200 hours (▲50% vs Base) | Base: Outlasts competitors by 1.6x. Advanced: 2.4x longer lifespan in corrosive conditions. | Base: Standard coating may degrade in extreme saltwater. |
Adjustability | Custom suspension setups | Industry Standard: 2 adjustment points Our Base: 4 points (▲100%) Our Advanced: 6 points (▲50% vs Base) | Base: Easy tuning for uneven loads. Advanced: Precision adjustments for off-road handling. | Advanced: Requires advanced installation skills. |
Fatigue Life | Long-haul trucks | Industry Standard: 500,000 cycles Our Base: 750,000 cycles (▲50%) Our Advanced: 1,000,000 cycles (▲33% vs Base) | Base: 1.5x more durable under constant stress. Advanced: 2x industry standard for longevity. | Advanced: Heavier design adds 8% to vehicle weight. |
⭐⭐⭐⭐⭐ James Whitaker - Logistics Fleet Manager
"We’ve retrofitted 12 DAF F 3300 trucks in our fleet with the Pro Model Steel Leaf Spring, and the difference is undeniable. The 7,000 kg load capacity has been a game-changer for our heavy freight routes, and after 7 months of constant use on rough rural roads, zero signs of fatigue or deformation. The 7-position adjustability allowed us to fine-tune suspension for varying cargo loads, improving both driver comfort and tire longevity. Installation was straightforward thanks to the pre-drilled holes and precise 45mm double eye design. Given the ISO 12944-C5 corrosion resistance, I’m confident these will outlast our previous springs by at least two years, especially in winter salt conditions."Purchase Date: February 2025 | Usage Period: 7 months
⭐⭐⭐⭐⭐ Elena Ruiz - Independent Truck Repair Shop Owner
"As someone who works on DAF trucks daily, I appreciate parts that are both durable and installer-friendly. These Advanced Model leaf springs (6,000 kg capacity) replaced a cracked OEM unit on a customer’s F 3300 used for quarry transport. The galvanized steel construction and rounded ends made installation smooth, and the 5 adjustable mounting holes gave me the flexibility to match the customer’s preferred ride height. After 5 months of heavy-duty use, the customer reports no sagging or noise—rare for aftermarket springs. The black oxide coating is holding up beautifully, even with daily mud and moisture exposure. A solid upgrade over generic brands."Purchase Date: November 2024 | Usage Period: 5 months
⭐⭐⭐⭐☆ Marcus Bell - Construction Site Transporter
"I run a small hauling business in mountainous terrain, and my DAF F 3300 takes a beating. I installed the Base Model springs six months ago as a cost-effective replacement, and they’ve performed well above expectations. The curved design really does absorb shocks better—passengers notice less jolting on rocky tracks. I especially like the adjustable tension slots; I tweaked them after a few weeks to handle heavier loads, and it made a noticeable difference in stability. Only reason I’m not giving 5 stars is that I wish it had more than 3 adjustment points like the Pro version. That said, for the price, this is one of the best aftermarket leaf springs I’ve used."Purchase Date: January 2025 | Usage Period: 6 months
⭐⭐⭐⭐⭐ Anita Patel - Plant Maintenance Lead
"Our facility uses DAF F 3300s for internal material transport across a chemical processing zone, so corrosion resistance is non-negotiable. We chose the Pro Model with ISO 12944-C5-M certification, and after 8 months of exposure to mild chemical runoff and high humidity, the springs show no rust or coating degradation. The high-carbon steel feels incredibly solid, and load distribution is even, reducing stress on other suspension components. Our maintenance logs show a 30% drop in suspension-related service calls since switching. The modular design also made installation quick—our team had it done in under two hours. Highly recommend for industrial or coastal environments."Purchase Date: April 2024 | Usage Period: 8 months
⭐⭐⭐⭐⭐ Derek Simmons - Long-Distance Truck Driver
"I drive 10,000 km a month, mostly loaded trailers through variable terrain. After my old springs started sagging, I upgraded to the Advanced Model based on a colleague’s suggestion. Now, 4 months in, the ride is noticeably smoother, especially on potholed highways. The 43 dBA shock absorption claim isn’t marketing fluff—there’s far less cabin vibration. I’ve also adjusted the tension twice depending on cargo weight, which is a huge plus. No squeaking, no cracks, and the rounded ends seem to prevent stress fractures. For any DAF F 3300 owner tired of constant suspension repairs, this is worth every penny."Purchase Date: March 2025 | Usage Period: 4 months
Average Rating: 4.9/5 ⭐ (89 Reviews)
Mark Reynolds - Automotive Suspension Specialist (15+ years)
"In my experience evaluating commercial truck components, these DAF F 3300-specific leaf springs stand out for their precision engineering and material integrity. The high-carbon steel with black oxide coating exceeds typical fatigue life benchmarks, and the 750,000 to 1,000,000 cycle durability is backed by real-world performance. I particularly recommend the Pro Model for mining, construction, or coastal fleets where corrosion and extreme loads are constant challenges."
Linda Tran - Commercial Vehicle Aftermarket Advisor
"Most aftermarket leaf springs sacrifice either strength or compatibility. This product strikes a rare balance—OEM-level fitment with enhanced performance. The adjustable mounting holes provide real customization, and the ISO 9001 certification ensures consistent quality. For workshops and fleet managers alike, this is a reliable upgrade path for aging DAF suspensions."
Posted: 2 days ago
"Installed the Pro Model last week. Immediate improvement in ride quality and confidence under load. Will be ordering for the rest of the fleet."
Posted: 10 days ago
"Replaced a damaged spring in under 90 minutes. The 45mm double eye matched perfectly. No alignment issues. Very impressed."
Posted: 3 weeks ago
"Using the Base Model for six months now. No complaints. Would love a version with rubber bushings for even smoother ride, but overall excellent."
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