78" SUMMIT MODEL DC-80-R VERTICAL BORING MILL

Max. diameter swing with either of the vertical heads 86"
Max. diameter swing of the side head 82"
Max. machining height above the table 59"
Max. weight of workpiece 26,500 lbs.
Diameter of table 78"
Thickness of table 10-1/4"
Number of T-slots (radial & parallel) 24
Table dirve thru helical cut steel gears YES
T-slot size 1-1/8"
Table speeds - number Infinitely variabl
e
Table speed - range 1.55 to 140 RPM
Table drive motor (DC) 75
Table bearings (types) Precision tapered
roller
Number of vertical heads 2
Type of vertical head - LH 1 Plain vertical
Type of vertical head - RH 1 Pentagonal turre
t
Swivel of each vertical head 35 R to 35 L
Travel of left hand plain vertical head 47-1/4"
Travel of right hand pentagonal turret head 30"
Hole diameter in faces of pentagonal turret 3-1/8"
Size of left hand vertical ram 9-1/4" square
Size of right hand pentagonal turret slide 17" x 8-1/2"
Vertical feed of the side head 59"
Horizontal feed of the side head 27-1/2"
Size of side head ram 7-1/2" square
Vertical travel of cross rail 49"
Min. from rail to top of the table 12-1/2"
Max. from rail to top of the table 59"
Number of feeds vertical and side heads 16
Feed range per table revolution .00197 to .1968 IP
M
(CONT.)
Rapid traverse for all three heads 98 IPM
Feed of cross rail on uprights 15-3/4 IPM
Both vertical heads have constant feed w/variable speeds
Overall length 169"
Overall front to back 165"
Overall height 181"
Weight (approx.) 69,000 lbs

MOTOR SPECIFICATIONS

Main drive motor (DC) 75 HP
Rail elevating motor 10 HP
Rapid traverse motor power 4 HP