Pneumatic Projection Spot Welding Machine 250KVA Stainless Steel Shock Absorber Welder

Product Overview

This pneumatic projection spot welding machine is purpose-built for high-volume welding of stainless steel shock absorber oil storage cylinder convex rings. Engineered with a rigid tree-style frame and pneumatic transmission, it delivers consistent, repeatable projection welds critical for automotive and industrial suspension component manufacturing.

Available in 100-250 KVA models, this resistance welder integrates a horizontal welding mechanism, fully water-cooled transformer, and precision secondary circuit to support demanding production schedules. The modular design ensures easy integration into existing production lines for shock absorber, bracket, and inner plate welding applications.

Key Technical Advantages

Impact-Resistant High-Rigidity Frame

The unique tree-style body with internal reinforcing ribs is machined to precise tolerances, minimizing deformation during continuous welding. This ensures stable weld quality and extends equipment service life, reducing maintenance downtime and total cost of ownership.

Precision Linear Guide Electrode Movement

The upper electrode travels vertically in a linear guide with high repeat positioning accuracy, guaranteeing accurate weld point placement on every cycle. This precision translates to fewer rejected parts and improved first-pass yield for high-tolerance shock absorber assemblies.

Fast-Response Pneumatic Pressurization

An aluminum alloy cylinder with low-damping seals and a pilot high-flow solenoid directional valve enables smooth, rapid electrode movement with sensitive follow-up performance. The result is faster cycle times and higher production throughput without compromising weld integrity.

Adjustable Welding Pressure with Proportional Valve

An electrical proportional valve provides precise, adjustable welding pressure to accommodate varying material thickness and workpiece geometries. This feature enables process flexibility and consistent weld nugget formation, improving overall weld quality for stainless steel applications.

Energy-Efficient Fully Water-Cooled Transformer

The fully water-cooled resistance welding transformer and rectifier deliver strong output while minimizing energy consumption. Lower electrical demand and efficient cooling reduce operating costs and ensure stable performance during extended production runs.

Safety Monitoring with Alarm Protection

Air pressure and water pressure switches with audible alarms prevent operation under unsafe conditions, protecting both the equipment and operators. This safety layer reduces the risk of machine damage and unplanned downtime, supporting continuous production schedules.

Applications

Working Principle

Technical Specifications

After-Sales and Support

• Warranty Coverage — 1-year comprehensive warranty covering manufacturing defects and workmanship issues.
• Field Installation and Commissioning — On-site installation, setup, and operator training provided to ensure smooth production startup.
• Video Technical Support — Remote video assistance for troubleshooting, maintenance guidance, and operational optimization.
• Online Support and Spare Parts — Dedicated online support channel with guaranteed availability of genuine spare parts for minimal downtime.
• Customization Service — Factory customization available based on your specific workpiece drawings and production requirements.

Frequently Asked Questions

What is the maximum welding thickness this machine can handle?

The maximum welding capacity varies by model: the DN(B)-100 handles up to 3.0+3.0mm, DN(B)-160 up to 4.0+4.0mm, DN(B)-200 up to 5.0+5.0mm, and the DN(B)-250 up to 6.0+6.0mm for mild steel.

What power supply options are available?

Standard configuration is 3-phase AC 380V. Alternative voltage options such as 220V and 440V can be arranged upon request to match your facility's electrical infrastructure.

Can the machine be customized for specific workpieces?

Yes, our factory can customize the machine based on your workpiece drawings. We have experience welding parts with protrusions on brackets and inner plates up to 4.5mm+2.5mm thick with multiple welding protrusions.

What is the delivery time for this welding machine?

Delivery time depends on configuration and customization requirements. Standard models are typically available within 30-45 days after order confirmation. Contact our sales team for a precise schedule based on your requirements.

What after-sales training and support do you provide?

We provide field installation, commissioning, and operator training. After-sales support includes video technical assistance, online support, and reliable spare parts supply to keep your production running.

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