This is a double sided vice grip with hydraulic loading on one side. Manual adjustment of the other side is provided to centralise the sample. The jaw faces are 100mm × 70mm with a 1mm pyramid cut face. Plain faces are available as an option.

The closing force of the hydraulic ram is 100kN. Because of the high closing force the grip is supplied with a hand control that requires the operator to use both hands to close the grips. The lower grip is supplied with a mechanical clamp to hold the sample in position while the hand control is operated. Both grips close together. Single valves to close the two grips independently and without the two handed operation can be supplied as an option but is not recommended.

Hydraulic pressure is supplied from an air driven power pack to a maximum of 700bar. The customer has to supply the air from a filtered, non lubricated and regulated supply. An electrically driven pump is available as an option. The pump and all hoses, valves etc. between the pump and the grips are supplied connected and bled. The grips should NOT be disconnected from the pump as this will lead to oil loss and air entrapment.