24 SPINDLE NATCO MODEL 3BL MULTIPLE SPINDLE DRILL

Drilling capacities Single drill in mild
steel @ 60' per min.3" Dia. of drill
Speed76 RPM
Feed per rev..017"
Multiple drilling in mild steel @ 60' per min. 10-5/8" No. &
diameter of drills
Speed 367 RPM
Feed per rev..0061"
Single drill in cast iron @ 70' per min.3" Dia. of drill
Speed89 RPM
Feed per rev..043"
Multiple drilling in cast iron @ 70' per min. 10-3/4" No. & dia.
of drills
Speed357 RPM
Feed per rev..012"
Overall height of machine147"
Height of working surface of low base7-1/4"
Size of working surface of high base,
L to R and F to B36" X 28"
Height of working surface of adjustable
table - Minimum29-1/4"
Maximum39-1/3"
Total vertical adjustment of adjustable table 10"
Size of working surface of adjustable table,
L to R and F to B40" X 23"
Top of adjustable table to bottom of slide,
head up and table down40-3/4"
Top of adjustable table to bottom of slide,
head down and table up12-3/4"
Top of adj. table to bottom of adj. head
flange, head up, table down40-3/4"
Top of adj. table to bottom of adj. head
flange, head down, table up12-3/4"

(CONTINUED)
Maximum standard stroke of head or head slide 18"
Maximum drilling area24" F to B
Bored, number of spindles24
Size of upper joints1-1/2"
Ways to center line of head15"
Ways to center line of drive shaft14"
Available drive shaft speeds, RPM High Min.195 - 78
Low Max.793 - 318
30 Changes of speed are available
between these limits
Feeds Range of feeding rate, inches per min. 1" t0 10"
Rapid traverse rate, inches per minute 225"
Maximum feeding pressure 10000#
Diameter of hydraulic feeding cylinder 5"
Maximum standard stroke of head or head slide 18"

MOTOR SPECIFICATIONS

7-1/2 HP Main drive motor