HEALD #272 Plain Internal Grinder from 1958. Features a Red Head spindle, cross sliding work head, and a single point diamond dresser. Size capacity: 123" x 74". Table speeds up to 35 FPM. Ideal for precision grinding needs.
272 HEALD PLAIN INTERNAL GRINDER
S/N 37547
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. . . . . . . . . ........... 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..................... 400, 266, 200, 133 FPM
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, 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
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
Red Head spindle, your choice RPM.
Plain feed box.
Single point diamond dresser – manual.
Facing stop.
Cross sliding work head.
4 Speed work head.
Coolant tank and pump.
Specifications are deemed accurate, however, subject to verification or prior sale.
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