Heald 273A

HEALD "UNIVERSAL" INTERNAL GRINDER
Model 273A

Face Grinding Attachment (4-Position Turret Type)
SWING-AWAY Dresser
38000 RPM Cincinnati-Milacron/Heald
"Red-Head" Grinding Spindle (S/N 120815(
12" 4-Jaw Chuck w/Jaws
Coolant System (Tank & Pump)

CATALOG SPECIFICATIONS:
Swing Over Table, Workhead Parallel 24.5"
Swing Inside Coolant Splash Guard 20"
Swing w/Workhead @ 90-Degrees 13"
Bore Length Ground, Maximum 16"
Grinding Stroke, Minimum .125"
Grinding Stroke, Maximum 16"
Table Longitudinal Travel 20"
Wheelhead Cross-Slide Travel 1.5"
Workhead-Slide Travel, Positioning 17.5"
Workhead Swivel Angle, Maximum 90-DEGREES
Workhead Spindle Speeds, Range 0 to 500 RPM
Internal Grinding Spindle Speeds 17500 RPM
Grinding Table Speeds, Infinite 0 to 18 FPM
Power Rapid Table Traverse 18 FPM
Grinding Spindle Motor, Horsepower 5 HP/3500 RPM
Workhead Chuck Motor, Horsepower 1.5 HP
Workhead Chuck Motor, RPM 0 to 3600 RPM
Electrical System 220-440/3/60
Overall Dimensions, W x D 8'0" x 7'7"
Weight, Approximately 6200 LBS

OPERATION: With the FACE GRINDING Attachment this
Machine is in Effect THREE MACHINES-IN-ONE...
1) INTERNAL Grinder
2) EXTERNAL Grinder
3) FACE or ROTARY SURFACE Grinder