British Federal – Stronghold Spot-Welder – 75 Stronghold / 100 Stronghold / 150 Stronghold

Stronghold welding machines set the standard for multi-purpose resistance welding equipment, having adjustable reach for spot welding. They are easily adapted for projection welding and are available as a seam welding version.

Standard Features for spot welding include:-

>    ADAPTABILITY - Infinitely adjustable reach from 500-800mm.
>    HIGH QUALITY WELDING - Choice of weld control.
>    PRODUCTIVITY - Welding speeds up to 250 spots per minute.
>    RELIABILITY - 50% duty cycle encapsulated transformer.
>    VERSATILITY - Simple adaption to projection welding.

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).
> Manual or Inline versions available
> Linear Transducer for Head Travel position
> Closed circuit water cooled system.
> Integration of automatic nut and bolt feed machines.