Heald 273A

273A HEALD UNIVERSAL INTERNAL GRINDER
Year: 1975


STANDARD CATALOG SPECIFICATIONS
Maximum swing over table...................... 24 1/2"
Swing work head swiveled...................... 90 degrees 12"
Swing inside standard chuck guard............. 16"
Angular adjustment of work head............... 90 degrees
Work head cross slide travel.................. 11 1/2" Rear
4" Front
Maximum table travel.......................... 20"
Wheel head cross slide travel................. 1 1/2"
Center of work head spindle to floor.......... 43 1/2"
Diameter of work head spindle flange.......... 9 5/8"

SPEEDS & FEEDS
Table speed for grinding...................... 0 18 FPM
Work head speeds Variable
Rapid traverse of table....................... 18 FPM
One turn of cross feed hand wheel............. .050 on dia.
Cross feed in increments: (adj.)
At 1 or both ends of table stroke........ .0001" .0005" on dia.
Minimum stroke................................ .125"
One turn of work slide hand wheel............. .100"
*One turn of table hand wheel................. 3 3/4"

DRIVE
Pump motor, 60 Cycles a c..................... 1 1/2 HP, 1800 RPM
Work head motor, 60 Cycles a c................ 1 1/2 HP, 1200 RPM
Wheel head motor, 60 Cycles a c............... 5 HP, 3600 RPM

GENERAL
Capacity of oil tank.......................... 11 gallons
Length & width of base on floor............... 73 3/4" x 37 7/8"
Net weight (approximately).................... 9,500 lbs.

EQUIPMENT & FEATURES
Cross sliding work head.
Single point manual dresser.
12" Extended bed.
Attached electrical.