HEALD TOOL ROOM INTERNAL GRINDING MACHINE Quote # 37-26

Model No. 272 AGE: (Mid 1960s)

SPECIFICATIONS AND DESCRIPTION:
Swing over table (workhead parallel to table) 22"
Swing inside of standard coolant guard 16"
Max. length of hole that can be ground 14" stroke
Max. dia. of hole 21-3/4" Max included angle of taper: 60 deg
ee
Center of chuck spindle from floor: 44"
Work head spindle flange 8" (Nominal D1)
Equipped w/magnetic chuck 9-5/8" (Flange)
Hole through work-head spindle 1 -15/16"
Cross Sliding Table - travel: 30-1/4"
Work-head cross slide travel: Front 6" / Rear 11-1/2"

Speeds and Feeds:
Table speeds for grinding unlimited between 0-15 FPM
Rapid traverse of table: 35 fpm
Work-head speeds, approximately 400-266-133 RPM
One turn of cross feed hand-wheel 0.050" on dia.
Roughing cross feed adjustable 0.0001 - .0006" dia.
Finishing cross feed non-adjustable 0.0001" on dia.
One turn of work-slide hand-wheel 0.100"

Machine capacities and dimensions:
Oil tank capacity - 15 gallon Capacity of standard
oolant tank - 55 gallon
Length and width of base on floor - 78-1/4" x 28-1/8" Floor space /approx: 123" x 35"
Machine weight 8700 #, crated approx. 9700#

ELECTRICS: 1-1/2 HP Hydraulic pump motor 5 HP Wheel-head motor
1/4 HP Coolant Pump
220/440 volt 3 phase 60 Hz.

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