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.
Coolant tank & pump.
36” Face plate.
All trip dogs.
Cam facing stop.
Cross sliding work head.
Manual or hydraulic table.
All pick feeds.
Manual dresser.
Compound slide on cross feed.
Work head job.
Acu-Rite Digital read out X & Y.