Heald 74 Internal Grinder

74 HEALD INTERNAL GRINDER Swing over table (straight work)........................ 29 1/4" Maximum diameter of hole that can be ground............. 20" Grinding stroke......................................... 15" Taper swivel on work head.......................... 60" inc. angle Center of chuck spindle from floor...................... 50" Diameter of work head spindle flange.................... 12" Hole through work head spindle.......................... 1 11/16" Total table travel...................................... 50" SPEEDS AND FEEDS Table speeds unlimited between............... 0 to 18 ft. per min Work head speeds adjustable from............. a-c 41-62-82-123 RPM Cross feed dial graduation represents................... .001" Power feed adjustment........................ 1 to 6 teeth Each ratchet tooth with coarse gears (standard)......... .0002" Each ratchet tooth with fine gears (optional)........... .000128" DRIVES Pump motor............................... 2 HP, ac - 1200 RPM Work head motor..1-1 1/2"-2-3 Tapered HP, ac-600-900-1200-1800 RPM Wheel head motor......................... 7 1/2 HP, ac-3600 RPM EQUIPMENT AND FEATURES Red Head spindle.