HEALD #272 Plain Internal Grinder, with an 18" x 12" size capacity. Features include Red Head spindle, single point diamond dresser, and 5 HP wheel head motor.
| Swing | 18" | 457.2 mm |
| Size Capacity | 18" x 12" | 18" x 12" |
| Max Grinding Bore | 21.75" | 552.45 mm |
| Travel-Long | 30.25" | 768.35 mm |
| Workhead Swivel | 60 | 60 |
| Workhead Power | 1.8 hp | 1.3 kW |
| Wheel Power | 5 hp | 3.7 kW |
| Workhead Speed | 400,266,000,000 RPM | 400,266,000,000 RPM |
| Dresser | Yes | Yes |
| Dimensions | 123 x 74 | 123 x 74 |
| Weight | 7600 lbs. | 7600 lbs. |
272 HEALD PLAIN INTERNAL GRINDER
S/N 37194 Year: 1958
STANDARD CATALOG SPECIFICATIONS
Swing inside standard guard........................ 18"
Maximum length of hole............................. 12"
Maximum diameter of hole........................... 21 3/4"
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..................... 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 – electric.
Facing stop.
Timers - rough & finish.
Specifications are deemed accurate, however, subject to verification or prior sale.