Heald 271 PLAIN TOOLROOM INTERNAL GRINDER

271 HEALD PLAIN TOOLROOM INTERNAL GRINDER
Year: 1954


CAPACITIES:
Swing over table (straight work, on center line)... 22" 30" dia.
Swing inside of standard coolant guard............. 16" 24" dia.
Maximum length of hole that can be ground.......... 8" 10 1/2"
Maximum diameter of hole that can be ground........ 21 3/4"
Maximum included angle of taper.................... 60 degrees
Center of chuck spindle from floor............ 45 1/2" 49 1/2"
Workhead spindle flange.................... 8" type D1 cam lock or 9 5/8\" flange type (std)
Hole through workhead spindle..................... 1 15/16"
Table travel...................................... 16"
Workhead cross slide travel....................... Front 11 1/2"
Rear 6"

SPEEDS & FEEDS
Table speeds for grinding unlimited between........ 0 to 18 FPM
Rapid traverse of table............................ 18 FPM
Workhead speeds - approximate................. 400-266-200-133 RPM
One turn of cross feed handwheel.................. .050" on dia.
Roughing cross feed - adjustable......... .0001" to .0006" on dia.
Finishing cross feed - non-adjustable.............. .0001" on dia.
One turn of workslide handwheel.................... .100"

DRIVE
Hydraulic pump motor, 60 cycles a-c.......... 1 1/2 HP, 1800 RPM
Workhead motor, 60 cycles a-c................ 1 1/2, 1 3/4, 1/2 HP
470-720-860-1150 rpm
Wheelhead motor, 60 cycles a-c............... 5 HP, 3600 RPM
Coolant pump motor, 60 cycles a-c............ 1/2 HP, 1800 RPM

GENERAL DATA
Capacity of oil tank............................... 15 gallons
Capacity of standard coolant tank.................. 55 gallons
Length and width of base of floor............. 66 1/4" x 28 1/8"
Floor space (total) with or without coolant tank... 91" x 87"
Weight of machine net (approx.).................... 8,200 lbs.

EQUIPMENT & FEATURES
Plain feed box
Cross sliding work head
4 Speed work head
4 Position positive stop
Manual and power table
Mechanical dresser