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Copyright © 2020 Quality Machine Tools, LLC
PM-1440GT v9 2020-10
Section 2 FEATURES & SPECIFICATIONS
MODEL PM-1440GT Lathe
PM-1440GT Floor plan: approximate dimensions (not to scale)
General information
The PM-1440GT is a high precision gap-bed lathe. With an all-up weight of 1750 lb, plus 12 spindle speeds from
50 to 2000 rpm, it is a robust heavy-duty machine designed for day-in, day-out use in production and in the larger
model shop. Two motor options are available: 2 HP (220 Vac 1Ø) or 3 HP (220 Vac 3Ø).
All major castings are in Meehanite FC-25 iron for the greatest rigidity and freedom from vibration. The spindle has
a 2-inch bore, and is unusually short — just 15-1/2 inches, ideal for through-spindle work such as gunsmithing. Long
service life is assured by high precision taper-roller spindle bearings, together with hardened and ground bed ways,
shafts and headstock gears. All gears in the machine are oil-bath lubricated.
A saddle-feed gearbox, together will a full set of external change gears, provides for a full range of U.S. threads
from 3 to 56 TPI, and metric threads from 0.4 to 7.2 mm pitch. Importantly, for inch threading there is rarely a need
to reconfigure the external gears — with just one exception (13 TPI), a single gear setup cuts all UNC and UNF
threads from 1/8” (#5) to 4” diameter (44 TPI to 4 TPI).
In addition to the thread-cutting leadscrew the saddle-feed gearbox drives an independent feed shaft that powers
both the saddle and cross-slide. A friction clutch allows the saddle to be stopped precisely at any point along the
bed. A treadle-operated drum brake stops the spindle instantly, even at the highest speeds. A circulating coolant
system is installed in the right hand stand cabinet.
