Pittman “8540 Series” brush-commutated DC motors compare
favorably with similarly sized conventional counterparts by exhibiting improved
power density from bonded neodymium magnets and offering higher-performance
power solutions in a compact and lightweight design. Typical applications for
this family of motors range from data storage and medical equipment to
semiconductor processing and automation machinery, among others.
These motors are available in three lengths (2.114 in.,
2.585 in., and 3.057 in.) weighing from 4.66 oz. to 7.55 oz. Depending on
model, they can achieve continuous torque from 2.5 oz-in to 8.3 oz-in without
heat sink. Speed, voltage, current, and torque characteristics can be varied
and a selection of standard windings enables optimized performance tailored to
particular application needs.
The brush system for Pittman 8540 Series motors delivers
reliable and consistent performance over a longer life due to robust brass
brush tracks that keep brushes aligned, constant-force springs that provide
optimum brush pressure, and larger brushes offered in a choice of materials
(including standard graphite).
The motors exhibit very low magnetic cogging (or reluctance
torque) due to an optimized magnetic flux profile promoting smooth operation
and precise positioning control in servo applications. They are equipped with
pre-loaded ball bearings to accommodate high speeds, radial and axial shaft
loads, and temperature extremes. A newly developed bearing support system and
related construction techniques yield inherently more balanced 7-slot armatures
and help minimize vibration and audible noise.
Complementary products include gearboxes, encoders, and
brakes, and motors can be customized with various shaft configurations,
leadwire assemblies, and transmission components (gears, pulleys, or
sprockets). All Pittman 8540 Series motors incorporate an integral header
allowing for use of a wider choice of lead connection configurations and easier
installation.
