Spot Welding Machine
Product Code : LSK-WEAWLM-10678
Spot Welding Machine (SKU LSK-WEAWLM-10678) is a resistance welder that joins overlapping steel sheets by clamping them between two electrodes and passing a high current through a small spot. It is offered in AC and three-phase MFDC (medium-frequency direct current) versions for sheet-metal fabrication and production-oriented training. Science Lab Supplies supplies it from Ambala, India to technical institutes, engineering colleges, industrial training centres, contractors and distributors.
Specifications
The machine uses a high-efficiency encapsulated transformer and a low-loss secondary circuit to deliver the maximum welding current, with a secondary current feedback controller and a sturdy ram for high-speed operation. A safety cut-off switch monitors cooling-water flow to the transformer, thyristor and inverter.
| Parameter | Value |
|---|---|
| SKU | LSK-WEAWLM-10678 |
| Versions | AC, and three-phase MFDC |
| Rating, AC | 50 kVA to 340 kVA, AC 2 phase |
| Rating, MFDC | 100 kVA, 3 phase |
| Nominal electrode force | 350 kg to 1000 kg at 5.5 bar |
| Throat depth | 450 mm to 1200 mm |
| Control | Secondary current feedback controller |
| Safety | Water-flow cut-off switch for transformer, thyristor and inverter |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the Spot Welding Machine
A spot welder is used to join lapped sheet-metal parts quickly without filler metal, the method behind car bodies, enclosures and appliance panels. In training it shows how current, weld time and electrode force together decide the size and strength of the weld nugget.
- Sheet-metal and welding trades: resistance spot welding of lap joints.
- Automotive body courses: panel joining practice.
- B.Tech and diploma manufacturing labs: studying the effect of current and electrode force on weld quality.
The machine needs a suitable electrical supply, compressed air for the electrode force and a cooling-water feed. The electrodes close with high force, so hands must be kept clear and trainees supervised.
Standard Scope of Supply
The Spot Welding Machine is supplied as a single unit in the AC or MFDC version and rating you choose. Any optional electrodes, tooling or accessories are listed separately on the quotation, which also confirms the throat depth and electrode force of the model offered.
Packing, MOQ and Lead Time
Machines of this size are quoted individually. Tell us the version, rating and throat depth required and the quotation will state packing, delivery time and price for that quantity, together with any other vocational training equipment you add to the same enquiry.
As a registered exporter with an Importer-Exporter Code, Science Lab Supplies can ship to buyers in Oman, the Philippines, Nepal, Bangladesh, Zambia and Rwanda. Enquire via the contact page or enquiry cart; see also the lab tender page.
Frequently Asked Questions
What is the difference between the AC and MFDC versions?
The AC version is rated from 50 kVA to 340 kVA on a 2-phase AC supply. The MFDC version is rated at 100 kVA on a three-phase supply and delivers medium-frequency direct current.
What electrode force and throat depth are available?
Nominal electrode force ranges from 350 kg to 1000 kg at 5.5 bar air pressure, and throat depth from 450 mm to 1200 mm, depending on the model.
Who supplies the Spot Welding Machine?
Science Lab Supplies supplies it from Ambala, India as part of its welding and workshop machine range for training institutes and colleges.
Does the machine need cooling water?
Yes. It has a safety cut-off switch that monitors water flow to the transformer, thyristor and inverter, so a cooling-water supply is required.
Related Sheet Metal and Welding Equipment
Spot welding is one step in sheet-metal fabrication. The items below cut the sheet to size and provide arc-based alternatives for joints a spot welder cannot reach, so they are often ordered for the same fabrication shop.
- Electric Shear — handheld cutting of steel sheet.
- Manual Hand Shear — bench cutting of thin sheet.
- MIG Welding Machine — continuous seams on sheet and plate.
- TIG Welding Equipment — precise welds on thin metal.
Browse the full Welding Equipment and Workshop Lab Machine range or all TVET lab equipments.
Last updated: 25 September 2026
