Heald 272 PLAIN INTERNAL GRINDER

272 HEALD PLAIN INTERNAL GRINDER
Year: 1958

STANDARD CATALOG SPECIFICATIONS
Swing inside standard guard........................ 18"
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 workhead 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
Workhead speeds..................... 400, 266, 200, 133 FPM
One turn of cross feed handwheel................... .060" on dia.
Wheel wear compensation on dia..................... 0 to .004"
Maximum power cross feed........................... .042" on dia.
DRIVE
Workhead motor, Standard 60 Cycles a‑c........ 1 1/2‑1‑3/4‑1/2 HP
....................................... 1800, 1200, 900, 600 RPM
Oil pump motor................................ 2 HP, 1800 RPM
Wheelhead 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
Red Head spindle, your choice RPM
Plain feed box
Single point diamond dresser - electric
Facing stop
Timers - rough & finish