Custom Lift Arm Manufacturer

China Simis Company is a specialized OEM custom manufacturer of high-performance Lift Arms, Booms, and Lifting Links. These components are the core structural elements of cranes, forklifts, excavators, and other material handling equipment. Due to the extreme static and dynamic bending moments they endure, Lift Arms are considered safety-critical components where failure is unacceptable.

We utilize Precision Forging to maximize material strength and grain flow at high-stress hinge points, and Casting (Steel, Ductile Iron) to cost-effectively integrate complex features like mounting bosses and curved profiles. Our focus is on certified structural integrity, superior fatigue resistance, and precise dimensional control of all connection points.

What Are the Manufacturing Processes for Lift Arm?

The manufacturing process is chosen to ensure the maximum possible structural integrity, particularly at the connection points subject to cyclical stress. We mainly adopt 5 core processes including Precision Closed Die Forging, Sand Casting/Shell Mold Casting, Lost Foam Casting, Welding Preparation and Precision Boring to meet different lift arm production needs.

How to Select Lift Arm Materials?

Material selection balances high yield strength (to support load) with impact toughness (to resist brittle fracture) and weldability (for assembly). We provide 4 main material types including Alloy Steel, Carbon Steel, Ductile Iron and Stainless Steel for lift arm production, each with specific performance advantages matching different application requirements.

What Measures Ensure Lift Arm Quality Assurance and Safety-Critical Testing?

Given the safety-critical nature of Lift Arms, comprehensive testing is mandatory to certify structural integrity and material properties. Our core quality assurance measures include Nondestructive Testing, Internal Soundness Verification, Mechanical Testing and Dimensional Certification to guarantee each lift arm meets strict safety standards.

·Nondestructive Testing (NDT): 

MPI (Magnetic Particle Inspection) and LPI (Liquid Penetrant Inspection) are routinely performed on all stress concentration areas (fillets, bores, weld prep areas) to detect surface or near-surface flaws that could initiate fatigue cracks.

·Internal Soundness Verification: 

UT (Ultrasonic Testing) or RT (Radiographic Testing) is required for critical cast steel components to verify the internal structure is free from damaging porosity or shrinkage defects.

·Mechanical Testing: 

Mandatory destructive testing for Tensile Strength, Yield Strength, and Impact Toughness (Charpy V-Notch) is performed per heat lot, ensuring compliance with specified mechanical properties.

·Dimensional Certification: 

CMM (Coordinate Measuring Machine) verification of all pin bores, boss faces, and overall length is performed to guarantee proper fit and function in the final assembly.

What Are the Key Applications for Simis Custom Lift Arms?

Our cast and forged lift arms are essential for systems that rely on precise, powerful, and safe lifting and positioning, covering lifting & crane equipment, construction machinery, material handling and specialized equipment fields.

·Lifting & Crane Equipment: 

Jib arms, boom extensions, and structural links for mobile and tower cranes.

·Construction Machinery: 

Linkages, buckets arms, and connecting rods for excavators, loaders, and backhoes.

·Material Handling: 

Mast components, tilt cylinders, and fork arms for forklifts and industrial trucks.

·Specialized Equipment: 

Lifting mechanisms for agricultural machinery, access platforms, and precise positioning systems in medical/logistics fields.

What Are the Advantages of Simis OEM Custom Lift Arm Manufacturing?

Partnering with Simis ensures certified structural integrity, high fatigue life, and compliance in demanding heavy equipment environments:

·Fatigue Resistance via Forging: 

We maximize the fatigue life of critical pivot points by using controlled Precision Forging, a method proven to enhance durability under constant cyclical loading far better than traditional casting.

·Certified Structural Integrity: 

We provide full documentation covering chemical analysis, mechanical property verification, and multi-level NDT compliance to meet the strict safety standards of the lifting industry.

·Weld Joint Optimization: 

We specialize in casting/forging parts with chemistry and geometry optimized for high-integrity welding, ensuring the final fabricated assembly maintains full strength.

·Precision Pin Fitment: 

Our final machining processes focus on the tight geometric tolerances required for pin bores, which is critical to smooth operation and prevention of localized wear and failure.

How to Get a Quote for Custom Lift Arms?

China Simis Company is your expert global partner for custom forged and cast lift arms, engineered for superior load capacity, certified structural integrity, and exceptional fatigue resistance.

Please submit your 2D technical drawings, CAD models, and specific requirements for the maximum design load (bending moment), safety factor, NDT level, required impact toughness (Joules at specified temperature), and target ASTM material grade to our engineering department for a consultation and detailed quotation.