Bearings Products: Sintered-Bronze Bearings
NU and NX plain bearings consist of a sintered-bronze substrate plated on the OD with low-carbon steel and sealed on the ID with a polymer.
The self-lubricated PTFElead
NU bearings can hold dynamic
loads up to 20,000 psi and
static loads up to 36,000 psi. Their
maximum speed is 1,000 fpm
when self-lubricated and up to
2,000 fpm with additional lubrication.
NU bearings are rated for
continuous operation at PVs up to
50,000 psi fpm with excursions
to 100,000 psi fpm. The bearings
have a 0.02 coefficient of friction
in static and dynamic operation
and operate at 328 to 536°F.
The acetal-lined prelubricated
NX bearings carry similar loads,
but are rated for maximum speeds
of 500 fpm in oil. Continuous-use
PV is rated at 80,000 psi fpm. The
bearings have coefficients of friction
of 0.01 and 0.015 in static and
dynamic situations, respectively.
They operate at 40 to 210°F.
The NU bearings are available
in bores up to 7 in. or 300 mm.
The NX bearing bores reach 3 in.
or 300 mm. Flanged versions and
thrust washers are also available.
National Precision Bearing
Group of Mechatronics Inc.
8152
304th Ave. SE
Preston, WA 98050
(800) 426-8038
nationalprecision.com