Reliable Plant July August 2008
Reliable Plant July August 2008
Reliable Plant July August 2008
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PRODUCT<br />
SPOTLIGHT<br />
SKF CYLINDRICAL<br />
ROLLER BEARINGS<br />
SKF cylindrical roller bearings feature unique logarithmically<br />
“crowned” rollers which provide improved contact geometry<br />
between roller and raceway. This roller profile reduces stresses under<br />
high loads, enables excellent performance even under misaligned<br />
conditions, and promotes cooler running to allow for high-speed<br />
operation and longer bearing life. Their precision-honed inner and<br />
outer ring, raceways, and rollers additionally improve lubricant<br />
effectiveness to contribute quieter, cooler and reliable service. The<br />
bearings are offered in single-, double- and multiple-row designs<br />
that differ in the arrangement, design and construction of retaining<br />
flanges. Available bore sizes range in diameter<br />
from 25 to 1,000 millimeters<br />
(0.9843 to 39.3701 inches).<br />
SKF USA Inc.<br />
www.skfusa.com<br />
800-440-4753<br />
TIMKEN TAPERED<br />
ROLLER BEARINGS<br />
Timken tapered roller bearings consist of a cone assembly and a cup.<br />
They are usually fitted as one of an opposing pair. During equipment<br />
assembly, single-row bearings can be set to the required clearance<br />
(endplay) or preload condition to optimize performance. Single-row<br />
tapered roller bearings have positive roller alignment that ensures true<br />
rolling motion and generates a “seating force” that pushes the roller<br />
against the cone large rib. This seating force prevents the rollers from<br />
skewing off apex, thereby keeping them positively aligned and located<br />
against the cone large rib. Products are available<br />
with inside diameters ranging from 7.937<br />
to 863.6 millimeters (0.31225 to 34<br />
inches) and outside diameters<br />
ranging from 31.991 to 1,060<br />
mm (1.2595 to 41.7323<br />
inches).<br />
The Timken Company<br />
www.timken.com<br />
330-438-3000<br />
MRC MARATHON BEARING UNITS<br />
MRC brand Marathon series prelubricated mounted bearing units<br />
offer sustained maintenance benefits by eliminating the need for<br />
regreasing. The USDA H1-approved high-quality synthetic grease is<br />
odorless, tasteless and approved for use in all food processing and<br />
beverage industry applications. Among other benefits, the grease<br />
imparts excellent internal and external bearing protection, high aging<br />
resistance for extended lubricant life, and high load-carrying capacity,<br />
which helps to prevent premature bearing wear. The Marathon series<br />
includes heavy-duty, extreme-duty and composite versions incorporating<br />
high-quality, corrosion-resistant insert bearings (coated or<br />
stainless). Available in a range of sizes, standard housing styles<br />
include pillow block, two- or four-bolt flange, or tapped base.<br />
SKF / MRC<br />
www.skfusa.com/mrc<br />
800-440-4753<br />
IGUS SLEWING RING BEARINGS<br />
Slewing ring bearings from igus use two self-lubricating, low-friction<br />
polymer sliding elements in place of ball bearings. The cost-effective,<br />
low-noise “PRT” modules are highly wear resistant, easy to install<br />
and completely maintenance-free. The slewing rings are also robust<br />
and have a high load capacity. The PRT slewing rings have aluminum<br />
housings and use stainless steel screws. The polymer sliding elements<br />
are made from igus’ high-performance iglide J, which contains a<br />
solid lubricant. This material also boasts a low coefficient of friction,<br />
chemical resistance, low moisture absorption and good vibration<br />
dampening properties. These slewing ring bearings are suitable for<br />
all environments, in particular semiconductor and cleanroom applications,<br />
assembly lines, production facilities and robots.<br />
igus Inc.<br />
www.igus.com<br />
800-521-2747<br />
www.reliableplant.com <strong>July</strong> - <strong>August</strong> <strong>2008</strong> 29