Ningbo Fenghua Bolong Machinery Manufacturing Co., Ltd. is one of the leading manufacturers and suppliers of steel fork in China. Please feel free to buy durable steel fork made in China here from our factory. All customized products are with high quality and competitive price.
Core Advantages
High-Strength Material Options - Available in carbon steel (C45, C50), alloy steel (4140, 4340), and HSLA grades. Material selection is based on tensile strength requirements - from 500MPa for general use to 1000MPa+ for high-stress applications.
Forged or Stamped Construction - Forged steel forks provide superior grain flow and impact resistance for extreme load applications. Stamped steel forks offer cost-effective production for moderate load requirements. The selection between forging and stamping is based on load capacity, volume, and cost targets.
Impact & Fatigue Resistance - Steel's inherent toughness provides excellent resistance to impact loads encountered during off-road operation, pothole strikes, and heavy braking. Forged construction further enhances fatigue strength, providing reliable service life in demanding applications.
Heavy Load Capacity - Engineered to support vehicle weights exceeding 3.5 tonnes in commercial truck applications. Steel forks handle the high static and dynamic loads of heavy-duty suspension systems without deformation or premature failure.
Precision Machined Interfaces - Critical bushing bores and mounting faces are CNC-machined to ensure proper alignment with suspension bushings, ball joints, and chassis attachment points. Tight tolerances maintain wheel alignment and prevent uneven bushing wear.
Corrosion Protection Options - Zinc plating, phosphating, Dacromet, or e-coat finishes provide corrosion resistance for underbody exposure. Heavy-duty truck applications may specify additional coating thickness for extended service life in salt-spray environments.
Complete Dimensional Validation - Fork spacing, bore alignment, and mounting face positions are verified on CMM equipment. 100% inspection of critical dimensions ensures consistent fitment and performance across production batches.
Technical Specifications
|
Parameter |
Details |
|
Product Name |
Steel Forks - Heavy-Duty Suspension Components |
|
Materials |
Carbon steel, alloy steel (4140/4340), HSLA grades |
|
Manufacturing Process |
Forging (heavy-duty) or stamping (medium-duty) → heat treatment → CNC machining |
|
Size Range |
Custom per vehicle application |
|
Tolerances |
Bores ±0.02mm; mounting faces ±0.15mm; fork spacing ±0.25mm |
|
Tensile Strength |
500–1000+ MPa (grade dependent) |
|
Surface Treatment |
Zinc plating, phosphating, Dacromet, e-coat |
|
Quality Systems |
IATF 16949 certified manufacturing |
Manufacturing Process
|
Stage |
Key Operations |
Quality Gates |
|
Material Prep |
Bar/coil cutting → heating (for forging) |
Material certificate; chemical composition check |
|
Forming |
Forging or heavy-gauge stamping → flash trimming |
Grain flow inspection; dimensional check |
|
Heat Treatment |
Quenching + tempering (as required) |
Hardness; tensile strength; impact testing |
|
CNC Finishing |
CNC machining of bores, faces, and mounting holes |
CMM verification; surface finish; positional accuracy |
|
Coating |
Surface preparation → zinc plating/Dacromet/e-coat |
Coating thickness; salt spray testing; coverage check |
Quality Control
Application Scenarios
Heavy-Duty Truck Suspension
Steel forks in Class 6-8 truck front and rear suspensions. These components handle axle loads exceeding 10 tonnes per axle. Forged steel construction provides the impact resistance needed for pothole strikes and off-road operation.
Commercial Vehicle Control Arms
Steel control arm forks in light trucks, vans, and buses. High-strength steel delivers the load capacity required for frequent stop-start duty cycles and varying payload conditions.
Off-Highway & Industrial Equipment
Forks used in construction equipment, agricultural machinery, and material handling vehicles. Extreme impact loads and abrasive operating environments require the toughness and wear resistance that steel provides.
Material Grade Selection:
|
Grade |
Tensile Strength |
Yield Strength |
Typical Application |
|
C45 (carbon steel) |
600 MPa |
350 MPa |
Light commercial vehicles |
|
4140 (alloy steel) |
950 MPa |
650 MPa |
Heavy trucks, off-highway |
|
4340 (alloy steel) |
1100 MPa |
850 MPa |
High-stress/extreme applications |
Custom Services
Engineering consultation
Load analysis and design review based on vehicle weight, suspension geometry, and operating conditions
Forming process selection
Forging for maximum strength and impact resistance; stamping for cost-effective medium-duty applications
Custom geometry
Fork spacing, bore positions, mounting interfaces per your drawing
Material selection
Carbon steel, alloy steel, or HSLA grades tailored to your load and cost requirements
Heat treatment
Quenched and tempered per your mechanical property specifications
Surface treatment
zinc plating, phosphating, Dacromet, or e-coat per your corrosion protection requirements
Whether you need steel forks for automotive chassis applications requiring heavy load capacity, steel suspension forks for commercial vehicle durability, or steel control arm forks with high impact resistance - our engineering team delivers from material selection through forming, heat treatment, and precision finishing.
Contact Us for Your New Project
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