Pratt & Whitney, No. 4E-M3021, GE 550 NC Control, 44" x 22"W, Retrofit, 1970s   Our stock number: 5117

Pratt & Whitney, No. 4E-M3021, GE 550 NC Control, 44 x 22 W, Retrofit, 1970s

MODEL/TYPE: #4E / M3021 - Precision Hole/Jig Grinder
AGE: 1970's
NC - Retrofit

SPECIFICATIONS & DESCRIPTION:
Table Dimensions: 44" x 22"
Table movement / travel range: 36" (X) x 22" (Y)
Vertical Head travel on column: 16-1/2"
Spindle travel / quill: 4-1/2"
Spindle Angular Adjustment for taper hole gringing: 3 degrees
Table top to wheel spindle end max (type 'B' head): 21-1/2"
Grinding Spindle speed - Precise Spindle/electronic type: 20,000 RPM
Spindle center to column way guide distance: 12-3/4"
Spindle center to column throat: 24-1/2"
Ht of column throat above table: 16-1/2"
Siatance - floor to top of table: 36"
Maximum hole dia capacity w/type 'B' head: 6-1/2" dia
Wheel offset - maximum radius: 3"
Feed dia graduations: Fine feed: 0.0001"
Coarse feed: 0.002"

Equipment - tooling included:
Way covers
Coolant System
20,000 RPM electronic spindle
Electronic NC control on X & Y axis (GE Model 550 NC control)

ELECTRICS: 220v - 3 Ph - 60 Hz

CONDITION: Machine is in very good condition. Currently in plant, not
in operation.

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