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01/09/2007

Dry bearings offer good wear, friction performance


GGB, formerly Glacier Garlock Bearings, now offers its DP4™ B dry bearing material for good wear and friction performance over a wide range of speed, load and temperature conditions in a variety of applications. It also performs well with lubrication.


Potential applications include lifting, pneumatic, medical, agricultural, scientific and office equipment; hydraulic pumps and motors; textile machinery; and drying ovens. The new bearings are also suitable for use in weir chains, marine hoists, automotive wipers and other outdoor applications, as well as data transmission systems, food processing equipment, and packaging machinery.


DP4 ™B features a metal-polymer composite sliding layer overlaid and impregnated into a bronze sinter layer, which in turn is bonded to an antimagnetic solid bronze backing for superior resistance to seawater and corrosion.


Specifications
































































Properties

Unit Values

Dry

Max. sliding speed U

2.5 m/s

Max. PU factor

1.0 N/mm2 * m/s = W/ mm2

Coefficient of friction

0.04-0.25

Oil Lubrication

Max. sliding speed U

5.0 m/s

Max. PU factor

1.0 N/mm2 * m/s = W/ mm2

Coefficient of friction

0.02-0.08

General

Max. temperature Tmax

+280°C

Min. temperature Tmin

-200°C

Max. load P static

140 N/ mm2

Max. load dynamic

140 N/ mm2

Shaft surface finish Ra

≤0.4 μm

Shaft hardness

>200 HB



DP4™ B is available in standard cylindrical bearings, flanged bearings and strip material, as well as custom thrust and flange washers and other non-standard parts. For more information, contact germany@ggbearings.com. Web site: www.ggbearings.com.