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HEALD MODEL 271 SIZEMATIC INTERNAL GRINDING MACHINE

GRINDER INTERNAL
Manufacturer:
MISC.
Model:
271 SIZEMATIC
Year:
1961
Stock #:
3497
HEALD MODEL 271 SIZEMATIC INTERNAL GRINDING MACHINE

Swing over table, straight work 18"
Swing inside standard chuck guard 12"
Maximum length of hole that can be ground 5.5"
Diameter of hole that can be ground 1/8" - 5 1/2"
Maximum included angle taper 60 degrees
Table travel 16"
Table speed rapid traverse 35 FPM
Table speed grinding 0 to 20 FPM
One turn of cross feed handwheel .060" on diameter
Wheel wear compensation on diameter 0 to .004"
Maximum power cross feed .042" on diameter
Floor space 93" x 85"
Approximate net weight 7,400 lbs.

MOTOR SPECIFICATIONS

5 HP 3/60/220/440 Wheelhead motor
2 HP 3/60/220/440 Oil pump motor
1/2 HP 3/60/208-220/380-440 Coolant pump motor
1/4 HP 3/60/208-220/440 Barnesdrill magnetic filtering system
motor

Hydraulically operated 8" hollow spindle workhead assembly
25,000 RPM Heald Red Head spindle, unit #5-3A-0M-U-510, s/n
97023
Spindle dresser
Coolant system

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