New British Federal – Stronghold Spot Welder
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British Federal - Stronghold Spot Welder
Part Number: 304
Total reliability is provided by British Federal BF450 type electronic welding control using ‘state of the art’ technology providing all electronic fully synchronous welding control and solid-state thyristor switching.
ADAPTABILITY - Infinitely adjustable reach from 500 -800mm.
HIGH QUALITY WELDING - Choice of state-of-the-art microprocessor weld control.
PRODUCTIVITY - Welding speeds up to 250 spots per minute.
RELIABILITY - 50% duty cycle encapsulated transformer.
VERSATILITY - Simple adaption to projection welding
OPTIONAL EXTRAS
High lift system.
Soft Touch Safety system.
Water-cooled lower arm.
Reversible arms for angled electrodes.
Closed circuit water-cooled system.
Analogue PV valve.
MFDC Transformer / Weld Control.
Serra controls with optional Colour Touchscreen HMI.
MFDC OFFERS THE FOLLOWING 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.
| 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.
