BIG KAISER has launched the HMCJ, a super-slim milling chuck with peripheral coolant supply, designed to support heavy-duty and finish endmilling tasks with power and precision using Ø1/2” or Ø12mm cutters. The newest, slimmer member of the Hi-Power Milling Chuck (HMC) family features a clamping bore with fine slots surrounded by hundreds of needle bearings, which ensures concentric, precise and smooth clamping when the nut is tightened.