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Heald 272 Internal Grinder, 22" Swing Over Table, 16" Swing Inside Guards, Cross Sliding Workhead
| Swing | 22" | 558.8 mm |
| Size Capacity | 22" | 22" |
| Max Grinding Bore | 21" | 533.4 mm |
| Travel-Long | 30.25" | 768.35 mm |
| Workhead Power | 1.8 hp | 1.3 kW |
| Wheel Power | 5 hp | 3.7 kW |
| Workhead Speed | 1,800 RPM | 1,800 RPM |
| Dresser | Yes | Yes |
| Dimensions | 123" x 74" | 123" x 74" |
| Weight | 7600 lbs. | 7600 lbs. |
272 HEALD SIZEMATIC INTERNAL GRINDER
S/N 48820A Year: 1980
STANDARD CATALOG SPECIFICATIONS
Swing over table................................... 22"
Swing inside standard guard........................ 16"
Maximum length of hole............................. 12"
Maximum diameter of hole........................... 21"
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.
Sizematic feed box.
Single point diamond dresser.
Facing stop.
Timers.
Cross sliding workhead.
Variable speed workhead.
Workhead jog.
Attached electrical.
Specifications are deemed accurate, however, subject to verification or prior sale.
