Heald 171 SIZEMATIC INTERNAL GRINDER

171 HEALD SIZEMATIC INTERNAL GRINDER
Year: 1967

Maximum swing, straight work on center line........ 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 workhead spindle flange................ 6"
Table travel....................................... 12"

SPEEDS & FEEDS
Table speed, rapid traverse....................... 35 FPM
Table speeds for grinding unlimited between....... 0 ‑ 20 FPM
Workhead speed, two step sheave................... 960 or 1360 RPM
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)............. 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
Red Head Heald grinding spindle
Electric single point diamond dresser
All trip dogs
Rough & finish timers
Positive stop
Coolant tank and pump