British Federal – Stronghold Projection Welder – 75 Stronghold / 100 Stronghold / 150 Stronghold
Price on Request
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Stronghold projection welding machines are designed for light to medium duty applications. Built to British Federal’s high-quality standards, they are available as dedicated projection welders, complete with custom built tooling or as conversions from the Stronghold spot welder. Standard Features for projection welding include -
> EASY TOOLING ALIGNMENT - Spherical seating for the lower platen.
> TOOLING VERSATILITY - Fully adjustable platen gap.
> RELIABILITY - 50% duty cycle encapsulated transformer.
> HIGH QUALITY WELDING - Choice of weld control and AC or MFDC versions.
Stronghold can be fitted with a range of AC Weld Transformers (100 to 150kVA) or MFDC Transformers (100 to 250kVA) as well as a choice of Weld Controls and other options.
MFDC offers the following added benefits -
> Improved weld quality.
> Reduced Power consumption costs.
> Lower peak currents providing increased electrode life.
> 3-phase even load distribution.
> Ideal for welding coated materials and Aluminium.
> Weld times reduced through increased rate of heat input to work piece.
> Reduced weld splash owing to lower peak currents.
> Can be retrofitted to existing machines.
Optional extras:
> Retract/high lift and or 160mm air cylinder.
> 100KVA , 150KVA single phase AC or 100KVA 3-phase DC Medium Frequency Transformer.
> Load Cell for Force verification
> Nut Verification System
> Water Flow Sensors
> Electro-pneumatic regulator for automatic adjustment of weld force with weld program selection. (Compatible weld control required).
> Bespoke designed tooling
> Linear Transducer for Head Travel position
> Closed circuit water cooled system.
> Integration of automatic nut and bolt feed machines.
| Technical Specifications | 75 Stronghold | 100 Stronghold | 150 Stronghold | ||
| Continous power @ 100% duty cycle | Sp | KVA | 53 | 70 | 106 |
| Max short circuit power | Scc | KVA | 300 | 330 | 580 |
| Max welding power | Smax | KVA | 240 | 350 | 460 |
| Nominal power @ 50% Duty Cycle | S50 | KVA | 75 | 100 | 150 |
| Nominal supply voltage | U1n | V | 415 | 415 | 415 |
| Continous primary current at 100% duty cycle | I1p | A | 125 | 170 | 250 |
| Supply Frequency | Hz | 50 | 50 | 50 | |
| Supply phases | 2 | 2 | 2 | ||
| Supply capacity | KVA | 180 | 200 | 350 | |
| HRC fuse size to BS88 | A | 160 | 200 | 315 | |
| Feed cable c.s.a up to 30m long | mm² | 50 | 70 | 150 | |
| Max short circuit primary current | I1cc | A | 730 | 800 | 1,400 |
| Max short circuit secondary current | I2cc | A | 34,000 | 37,000 | 46,000 |
| Max welding current | I2 max | A | 27,000 | 29,000 | 36,000 |
| Duty cycle for max welding | Xmax | % | 4.8 | 7.1 | 5.2 |
| Continous secondary current at 100% duty cycle | I2p | A | 6,000 | 7,299 | 8,900 |
| Number of taps | 3 | 3 | 3 | ||
| Secondary open circuit volts | U20 | V | 8.8 | 9.9 | 11.9 |
| Weld cylinder diameter | mm | 125 | 125 | 160 | |
| Weld force min/max with a 1.5/5.5 bar supply | kN | 1.8/6.7 | 1.8/6.7 | 3.0/11.0 | |
| Weld force min/max with a 20/80 psi supply | Ibf | 400/1,500 | 400/1,500 | 650/2,500 | |
| Weld cylinder stroke max | mm | 76 | 76 | 76 | |
| Air pressure normal | bar | 5.5 | 5.5 | 5.5 | |
| Air pressure max operating | bar | 7 | 7 | 7 | |
| Air Connection/hose size | BSP/in | 1/2″/3/8″ | 1/2″/3/4″ | 1/2″/3/8″ | |
| mm | 12/10 | 12/10 | 12/10 | ||
| Cooling water min operating pressure | bar | 3 | 3 | 3 | |
| Cooling water consumption | lit/min | 20 | 20 | 20 | |
| Cooling water max inlet temp | °C | 30 | 30 | 30 | |
| Cooling water connection/hose size | BSP/in | 1/2″/3/4″ | 1/2″/3/4″ | 1/2″/3/4″ | |
| mm | 12/19 | 12/19 | 12/19 | ||
| Shipping specification | machine weight | kg | 570 | 570 | 630 |
| machine size | mm | 590W x 1,285D x 1,685H | 590W x 1,285D x 1,685H | 590W x 1,285D x 1,685H |
All of our machines are priced and sold as ‘Machine Only’ if you wish to have us deliver, Install and/or commission your new purchase, please request prices from our Sales Team. We offer a full range of services to suit all sizes of business and budgets.
