Gewefa introduces more compact OTT-Jakob Power Check II pull force gauge

The OTT-Jakob Power Check instrument is used for checking the force at which a tool is pulled into the machine tool taper, providing precision levels of diagnostic data that could prevent a fall-off in machining quality or even complete spindle failure. The more compact Power Check II can be used in confined spaces or on machines with a smaller capacity chuck. It features a gripping channel for automatic changing and gripping of the tool magazine, and is more economical on battery power. The Power Check II stores data on up to 8,000 measurements – for example, machine ID, date, time, precise pull force details and the adjusted range – so that the operator has the individual machine's pull force status at his fingertips. Data can also be downloaded onto a USB device. The OTT Power Check is suitable for all types and marques of clamping systems. It is powered by a 9V DC battery and can be used for all tapered standards with adaptors available for HSK, SK, ANSI, BT and MAS. Two versions are available, one with a pull force of 10-75 kN and one for smaller machines, with a pull force of 2-15 kN. Gewefa UK managing director Keith Warner comments: "Establishing precise pull force has always been something of a black art. The OTT Power Check that works to an accuracy of 0.1 kN allows an engineer servicing a machine to demonstrate complete and accurate pull force status." He adds: "Frequently a fall-off in performance, such as poor surface finish, is attributed to the toolholder or insert. The OTT instrument can diagnose or eliminate spindle related causes."