Heald 272

272 HEALD SIZEMATIC INTERNAL GRINDER
Year: 1956


STANDARD CATALOG SPECIFICATIONS
Swing over table................................... 18"
Swing inside standard guard........................ 12"
Maximum length of hole............................. 12"
Maximum diameter of hole........................... 5 1/2"
Minimum diameter of hole........................... 1/8"
Maximum included angle (size matic only)........... 60 degrees
Center of chuck spindle from floor................. 42"
Diameter of work head spindle flange............... 9 5/8"
Table travel....................................... 30 1/4"
Capacity of oil tank............................... 15 gallons
Capacity of coolant tank........................... 55 gallons

SPEEDS & FEEDS
Table speeds: Rapid traverse...................... 35 FPM
Grinding............................ 0 20 FPM
Work head speeds................................... Variable
One turn of cross feed hand wheel.................. .060" on dia.
Wheel wear compensation on dia..................... 0 to .004"
Maximum Power cross feed........................... .042" on dia.

DRIVE
Work head motor....................... hydraulic driven variable
Oil pump motor......................... 2 HP, 1800 RPM
Wheel head motor....................... 5 HP, 3600 RPM
Coolant pump motor..................... 1/2 HP, 1800 RPM

GENERAL DATA
Floor space without coolant tank................... 123" x 74"
Net weight of machine (approximate)................ 7,600 lbs.
Gross weight, crated (approximate)................. 8,700 lbs.
Gross weight, boxed (approximate).................. 11,250 lbs.

EQUIPMENT & FEATURES
Sizematic feed box.
Hydraulic single point diamond dresser.
Facing stop.
Rough & finish timers.
27,000 R.P.M. Red Head spindle.