Die Head

1/4" to 1" (Threading Capacity)3/8" to 11/2" (Threading Capacity)1/2" to 21/2" (Threading Capacity)1" to 4" (Threading Capacity)21/2" to 6" (Threading Capacity) Lathe Machine Saw Machine Power Press Nipple Threading Machine Bolt Threading Machine Other Machines 4" to 8" (Threading Capacity) MTT heat treated Lanco type Die Heads are revolving type for the application to the hand operated semiautomatic threading machines. The Die Heads provide accurate trouble free operations for long productions run. Constructed of specially-selected alloy steel (EN 24 and EN 48) the MTT Die Heads are recommended for threading up to class 3 tolerances. They have wide range coverage, permit rapid set up, give trouble free operation, are easy to adjust and of sturdy construction. The initial investment in the Heat Treated MTT Die Head is relatively small, repair are few and with use of MTT chasers, tool inventories and tool cost remain low. These are feature that provided the basis for economical threading operation with the MTT Thread Cutting Die Head as comparison to Coventry type self opening Die Head.Excellent for providing US, BSF, Whitworth and Metric Straight threads, NPT, NPTF, NPSM, BSPP and pipe threads.Unequalled for producing Acme and similar coarse pitch threads requiring heavy metal removal.Face mounted chaser holder sets provide wide range and oversize capacities. Special chaser holders are required to thread special diameter and pitch combinations, to cut Acme and similar threads or when close tolerances must be held.Heads are locked in the close position by hardened pins engaged in hardened bushings.Self-opening action or yoke movement, depending upon model of die head used, withdraws pins from bushings to take effect opening.When the pins withdraw the bushings, the closing ring rotates snapping the chaser holders radially outward to clear the chasers from finished threads. Pins and bushings are replaceable when worn.A worn screw mechanism maintains size while allowing infinite adjustment for any diameter within the range of the head.Chasers are securely held in the cutting position by dovetailed clamps and backed-up with an abutting screw. They are easily set by loosening the clamps and turning the abutting screw with a hex wrench until the appropriate size graduation lines on the setting gage and chaser holder agree.Chasers are adjustable and can be nominally moved ahead or back of center changing tool clearance until best performance is obtained.