Röhm Main Catalogue Clamping Technology Page 602
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Power chucks with quick jaw change system DURO-NC - central jaw unlocking APPLICATION Standard power chuck with through-hole for flexible use thanks to quick jaw change system. TYPE Power chuck available with cylindrical cenre mount. 3-jaw version. CUSTOMER BENEFITS Universal: Jaws can be offset, exchanged or turned For high speeds thanks to lightweight jaws High clamping precision and clamping force thanks to proven wedge hook system Possible to use jaw units of the DURO manual clamping chuck TECHNICAL FEATURES - - Central locking of the quick jaw change system Power transmission by means of wedge hook system Base jaws angle-serrated Note: The safety key can only be pulled out once the jaws are locked. This setup in combination with the key switch integrated in the machine also prevents the machine spindle from starting up unintentionally when the jaws are unlocked. Included in the scope of delivery: Chuck, chuck and jaw mounting screws, base jaws, safety wrench, mounting wrench NC = NC machine Gripping force / speed diagrams The loss of gripping force was determined experimentally on a chuck with matched UB top jaws. It is largely independent of the initial gripping force at zero speed. 200 180 DURO-NC 315 140 DURO-NC 250 120 DURO-NC 200 100 80 60 DURO-NC 175 DURO-NC 140 40 20 1000 To obtain the specified gripping forces, the chuck must be in a perfect condition and lubricated with F 80 lubricant recommended by RÖHM. Measuring point near chuck face. 2000 3000 4000 5000 6000 7000 Speed min -1 320 DURO-NC 630 280 240 Total gripping force kN Power chuck with quick jaw change system Lower curve: max. centrifugal force of top jaw Total gripping force kN Upper curve: min. centrifugal force of top jaw 160 DURO-NC 400 200 160 DURO-NC 500 120 80 40 500 1000 1500 Speed min -1 6088 www.eshop.roehm.biz 2000 2500 3000
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