Heald 171 SIZEMATIC INTERNAL GRINDER Year:

171 HEALD SIZEMATIC INTERNAL GRINDER
Year: 1971

CAPACITIES
Maximum swing, straight work, on center line dia... 13-3/4"
Maximum swing over table........................... 11-3/4"
Swing inside standard guard diameter............... 8"
Maximum length of hole............................. 3"
Maximum diameter of hole........................... 2"
Minimum diameter of hole........................... 1/8"
Maximum included angle (sizematic only)............ 60 degrees
Center of chuck spindle from floor................. 44"
Diameter of work head spindle flange............... 6"
Table travel....................................... 12"

SPEEDS & FEEDS
Table speed - rapid traverse...................... 35 FPM
Table speeds for grinding unlimited between....... 0-20 FPM
Work head speed - two step sheave................. 960 or 1360 FPM
One turn of cross feed hand wheel................. .060" on dia.
Maximum power cross feed.......................... .042" on dia.
Wheel wear compensation on diameter............... 0 - .004"

DRIVE
Work head motor -
Std. Voltages.................. 60 cycle a-c 1 HP - 1800 RPM
Oil pump motor................. 60 cycle a-c 1-1/2 HP - 1800 RPM
Wheel head motor............... 60 cycle a-c 5 HP - 3600 RPM
Coolant pump motor............. 60 cycle a-c 1/4 HP - 1800 RPM

GENERAL DATA
Capacity of oil tank............................... 10 gallons
Capacity of coolant tank........................... 55 gallons
Net weight of machine (approx.).................... 5,400 lbs.

EQUIPMENT & FEATURES
Sizematic feed box.
Electric single point dresser.
Rough/finish timers.
Trip dogs.