(1 votes, average: 5.00 out of 5)Hanging spot welding machine CRUXWELD AeroSpot 35 is engineered for fabrication shops, automobile body lines and sheet-metal industries where the workpiece is large, heavy or fixed — and the welder must come to the work.
Suspended from a precision spring balancer, the complete welding unit feels light at the operator’s fingertips and moves freely in every direction. Accurate spot welds can be placed on panels, frames, cabinets and vehicle bodies in virtually any working position — shift after shift, with less handling and reduced operator fatigue.
A hanging spot welding machine — also called a suspension spot welding machine or suspended spot welder — is a resistance welding system in which the welding transformer, welding tong, and pneumatic cylinder are integrated into one compact unit that hangs from an overhead balancer. Instead of bringing the workpiece to a fixed machine, the operator glides the welding gun to the workpiece.
The welding principle remains classic resistance spot welding: two copper alloy electrodes clamp the sheets under pressure, a controlled high current passes through the contact point, resistance heat melts a small nugget of metal, and the joint solidifies into a strong, clean spot weld — no filler wire, no flux, no shielding gas, no spatter.
What makes the suspension design special is freedom of movement. The balancer supports the full weight of the machine, so a single operator can move it up, down, left, right, forward, and backward, and rotate the tong through X, Y, and Z axes. Every corner of a bus body, container panel, or steel cabinet becomes reachable.
Bus bodies, truck cabins, machine enclosures, and large panels cannot be lifted onto a pedestal welder table. With the AeroSpot 35, the job stays on the fixture or conveyor and the machine travels — saving handling time, crane usage, and manpower on every single weld.
The spring balancer makes the 55 kg machine feel almost weightless. The operator positions the tong with one hand, squeezes the trigger, and the pneumatic cylinder applies uniform electrode force automatically. Weld quality no longer depends on how tired the worker’s arm is at 5 PM.
A spot weld completes in a fraction of a second. There is no electrode changing, no slag chipping, no grinding, and no post-weld cleanup. For panel joining, a suspension spot welder can outpace MIG tacking many times over, with a cleaner finish on both sides of the sheet.
Because heating is instant and highly localized, sheets do not warp the way they can with arc processes. Coated and galvanized sheets weld neatly with proper parameter settings. There are no fumes from filler wire and no arc flash across your bay.
The same integrated transgun concept used in the AeroSpot 35 is the foundation of robotic spot welding worldwide. As your line grows, your welding process and operator skills carry forward naturally.
| Requirement | AeroSpot 35 Hanging Welder | Stationary Spot Welder |
|---|---|---|
| Large component handling | Excellent | Component must be moved |
| Welding gun movement | Gun moves around job | Gun remains fixed |
| Floor-space requirement | Requires overhead support | Requires floor-mounted machine |
| Operator effort | Reduced through balancer | Job handling may be demanding |
| Access to assembled panels | Better flexibility | Limited by machine throat |
| Production style | Large and fabricated assemblies | Small and medium components |
| Electrode pressure | Pneumatic | Pneumatic or pedal operated |
| Cooling | Water-cooled | Model dependent |
| Best applications | Cabinets, vehicles, panels and enclosures | Small parts and repetitive components |
| Parameter | Specification |
|---|---|
| Brand | CRUXWELD |
| Product series | AeroSpot |
| Model | AeroSpot 35 |
| Product type | Pneumatic hanging spot welding machine |
| Welding-gun type | C-Type |
| Rated capacity | 35 kVA |
| Rated input voltage | 380 V AC |
| Power at 50% load duration | 25 kVA* |
| Power at 25% load duration | 30 kVA* |
| Maximum secondary short-circuit current | 14 kA* |
| Standard arm length | 300 mm |
| Distance between arms | 160 mm |
| Maximum stated welding thickness | 2.5 + 2.5 mm |
| Cooling-water flow | 4 L/min |
| Compressed-air consumption | Approximately 5.4 m³/h* |
| Transformer insulation class | Class F |
| Welding-gun weight | Approximately 55 kg |
| Overall dimensions | Approximately 850 × 470 × 320 mm |
| Utility cable and hose length | 10 metres |
| Gun operation | Pneumatic |
| Cooling system | Water-cooled |
| Suspension | Spring balancer |
| Welding controller | Separate control box |
| Welding process | Resistance spot welding |
The welding transformer is mounted as part of the suspended welding-gun assembly. This integrated construction keeps the transformer closer to the electrodes and reduces the need for long, high-current secondary cables.
Shorter secondary electrical paths can help reduce unnecessary power losses and provide a compact working arrangement.
The transformer is specified with Class F insulation, offering suitable thermal resistance for industrial operating environments when the prescribed duty cycle and cooling conditions are maintained.
AeroSpot 35 provides a stated maximum secondary short-circuit current of up to 14 kA. Resistance spot welding requires very high current at low secondary voltage. This concentrated current generates heat rapidly at the interface between the overlapping sheets.
Actual usable welding current depends on several factors, including:
The welding parameters should always be established through sample trials and destructive peel or chisel testing before beginning continuous production.
The C-type welding gun provides a direct and rigid clamping arrangement. The upper and lower copper electrodes approach the material from opposite sides and concentrate force at the selected welding point.
Pneumatic operation improves repeatability by reducing variation caused by manual hand pressure. The gun is suitable for applications where both sides of the overlapped workpiece are accessible and the component can fit within the available arm opening.
AeroSpot 35 is supplied with a standard arm length of 300 mm. This provides useful reach for cabinets, panels, channels, doors, frames and automotive components while maintaining a relatively compact welding-gun profile.
Longer or specially shaped welding arms may be possible for specific applications, but any increase in arm length can affect secondary impedance, mechanical rigidity, electrode force and available welding current. Custom arms should therefore be evaluated against the material thickness and required production speed.
The stated distance between the welding arms is 160 mm. This clearance determines the maximum component profile that can enter between the upper and lower arms.
Buyers should compare the 160 mm clearance with their actual panel depth, flange geometry, reinforcement position and fixture arrangement. A component drawing or physical sample is recommended when arm accessibility is critical.
The welding transformer, electrode holders, arms and copper electrode tips generate considerable heat during repeated welding cycles. AeroSpot 35 requires approximately 4 litres per minute of cooling-water flow. Continuous and correctly directed water circulation helps:
For regular industrial use, a closed-loop industrial water chiller is preferable to uncontrolled tap-water cooling. The cooling system should provide clean water, suitable pressure, stable temperature and a visible flow indication. A low-flow alarm or water-flow interlock is strongly recommended for production installations.
The welding-gun assembly weighs approximately 55 kg, making direct manual handling impractical. AeroSpot 35 is supplied with an industrial spring balancer that supports the gun from above. When correctly adjusted, the balancer allows the welding gun to remain nearly weightless within its designed working travel.
The operator can pull the gun downward, position it around the component and allow it to return smoothly after welding. The suspension system should be installed on a structurally suitable overhead beam, jib arm, monorail or fabricated support. A secondary safety cable or chain must also be installed independently of the main suspension point.
The machine includes a separate welding control box for operating and adjusting the spot welding cycle. Depending on the final controller configuration, adjustable functions may include:
The exact controller functions should be confirmed from the approved electrical specification supplied with the machine. A correctly adjusted controller helps reproduce the same welding cycle across multiple joints, operators and production batches.
The standard scope includes approximately 10 metres of power cable, cooling-water hose and pneumatic-air hose. This extended connection gives the suspended gun a useful working radius around large components and fabrication fixtures.
The hoses and cables should be supported by suitable cable carriers, trolleys or overhead guides. They must not drag across sharp sheet edges or become twisted around the suspension assembly.
AeroSpot 35 is suitable for spot welding overlapping automotive and transportation components. Resistance spot welding is widely associated with automotive sheet-metal assembly because it provides fast, repeatable joints without adding filler material.
The hanging welding gun is particularly convenient when the enclosure is too large to handle comfortably on a stationary spot welder.
CRUXWELD already provides portable and flexible spot welding solutions for workpieces that are difficult to move, including almirah production.
AeroSpot 35 can be evaluated for a wide range of appliance and consumer product assemblies.
Beyond dedicated production lines, AeroSpot 35 serves general fabrication shops handling varied sheet-metal work.
AeroSpot 35 is primarily intended for the resistance spot welding of mild steel, low-carbon steel, CRCA sheet, cold-rolled steel, pickled and oiled steel, galvanised sheet (after welding trials), stainless-steel sheet (after parameter trials) and compatible coated steel sheets.
Low-carbon steel is generally the most straightforward material for resistance spot welding because it offers a practical combination of electrical resistance, weldability and mechanical performance.
Galvanised sheet can be spot welded, but the zinc coating affects electrical contact, heat generation and electrode life. Higher maintenance frequency, suitable electrode material and optimised welding settings may be required.
Stainless steel can be evaluated using appropriate electrode force, current, time and electrode-tip geometry. Sample testing is essential before finalising production parameters.
The standard AeroSpot 35 configuration should not be selected for aluminium or copper without successful application trials. These metals conduct heat and electricity efficiently and normally require specialised power sources, higher welding current, precise control and application-specific electrodes.
