PERMALUBEŽ BEARINGS HAVE HIGH MECHANICAL STRENGTH:
The unusually high mechanical  strength gives PermalubeŽ   Bearings many advantages over  conventional bearings. PermalubeŽ   Bearings are not poured or molded,  rather, they are precision machined  from a solid bar of PermalubeŽ   material. Because the fibers in  PermalubeŽ are not chopped up or  cut, PermalubeŽ Bearings have a  much higher shear strength, bond  strength, flexural strength and  tensile strength. PermalubeŽ   Bearings will not crack or break like carbon bearings. The high  mechanical properties enable the  bearings to withstand higher loads  and torque requirements.

PERMALUBEŽ BEARINGS CAN WITHSTAND HIGH TEMPERATURES:
PermalubeŽ Bearings can withstand extremely high flash temperatures ( 1000 Deg. F) and  continuous running temperatures of 300 degrees F. Because of this unique quality, PermalubeŽ will  not melt, get spongy or soft or seize on the shaft. Other bearing materials such as thermoplastics,  rubber and elastomers, cannot take flash temperatures and will literally melt on the shaft if they see  any dry running at all.

LONGER LIFE FOR THE ROTATING ELEMENT WITH PERMALUBEŽ BEARINGS:
Because PermalubeŽ Bearings hold the shaft more securely than conventions guide bearings, radial movement in the shaft is reduced. This increases the life of the entire rotating element, especially  bearings, mechanical seals and wear rings. When PermalubeŽ Bearings are installed with a  PermalubeŽ Impeller and PermalubeŽ Casing Rings, the length to diameter requirement of the  rotating element is substantially changed by lowering the impeller mass and by increasing the  stability (support) of the rotating element.

CORROSION, EROSION & ELECTROLYSIS PROBLEMS ARE ELIMINATED WITH PERMALUBEŽ BEARINGS:
Since PermalubeŽ is basically an inert composite, electrolysis is greatly reduced. Additionally,  PermalubeŽ Bearings seal against the casing or bearing housings, which prevents leakage and  therefore eliminates corrosion and erosion damage. This is critical because it insures that the  bearings will be secured properly in the casing or housing, eliminating the risk of severe damage to  the entire rotating element.

PERMALUBEŽ BEARINGS REDUCE SHAFT WEAR:
Wear problems can be overcome by installing PermalubeŽ Bearings. PermalubeŽ Bearings have graphite as well as PTFE which substantially reduces frictional wear on the shaft. Additionally, the structural fibers in PermalubeŽ offer extremely high anti-galling characteristics. The highly polished surface finish of PermalubeŽ Bearings reduces unnecessary wear on the shaft as well as the bearings.

ABRASION RESISTANCE:
One of the many unique features of PermalubeŽ Bearings is the outstanding resistance to abrasion and its low rate of wear even in adverse conditions. The bearing has the ability to pass abrasive particles across the surface of the bearing into the flushing grooves. The particles do not embed themselves into the bearing surface and therefore cause less shaft wear. Circular flushing grooves can also be machined into the bearings to help pass abrasive particles.

Applications:
PermalubeŽ Bearings are excellent for all applications where bearings are submerged or partially submerged in a liquid or lubricant or where liquid can be piped for lubrication.

Marine:
Propeller shaft bearings for all blue water vessels in stern- lube form or in struts, rudder bearings, or shaft bearings for all vessels with inboard engines including pleasure, fishing, general work boats, dredgers, freighters, naval vessels and icebreakers.
PermalubeŽ Bearings should be used with all  centrifugal pumps in salt-water applications.

Hydro Bearings:
Stave bearings for water turbines are available in  sheet torn, strip form and in shorter strip 

pieces  for ease of installation. These bearings can be  vertical or horizontal. The precision machining  and structural integrity of the PermalubeŽ  Bearing enables high loads to be transmitted  over the entire length of the bearing insuring  minimum deflection/wear and maximum  longevity.

Industrial:
Permalube Bearings may be used in all centrifugal pumps for main intake, river water cooling, water supply, cooling towers, circulation, irrigation, sewerage, crude oil, and water turbines. Additionally, PermalubeŽ Bearings are excellent for bearing applications in conveyors, agitators! mixers, classifiers and pulp mills.

The above vertical turbine screen wash pump is manufactured with PermalubeŽ Spider Bearings, Throttle Bushing and Guide Bearings. One of the biggest advantages of the Permalube Bearing is its ability to take dry start up until the f reaches the bearing to lubricate the surfaces. PermalubeŽ Bearings have graphite and PTFE built into the resin system
to enable these bearings to endure dry running on start-up. This pump was manufactured by the Sims Pump Company for a major power utility company in Maryland.

Bearing Sizes:
Avoid thin wall bearings. Bearings with a wall  thickness of less than 125 inches should be  avoided since thin-walled bearings have  reduced load capacity. (Approximately 50%  less load capacity than normal rated  bearings.)

Avoid long and short bearings. Bearings with  a length to diameter ratio (LID) of greater than  2.0 and less than .25 should be avoided.

Sufficient operating clearances: Proper  running clearances are critical for good  bearing performance. Dynamic applications  involving continuous rotation at higher speeds  or elevated temperature applications require  additional clearance. All Permalube bearing  clearances are set at the factory. (See  Installation Instructions)

Shaft Material:
The shaft is an equal part of the bearing assembly. The importance of proper shaft material cannot be overemphasized. Most steel alloys are acceptable as shaft materials. Hardened steel shafts offer better performance in high load applications. Surface finish is also very important. The rougher the surface finish, the shorter the bearing life. A surface finish between 8 t0 16 micro inches will insure the most effective bearing performance by assuring maximum bearing wear resistance and the lowest coefficient of friction.

Housing Material:
To insure maximum performance and longevity of the bearing, the bore of the housing should be machined and free of any burrs. It is imperative that the Bearing Housing be machined concentric. After assembly, the shaft should be properly aligned with the motor or driver. All Permalube Bearings will be pressed into the housing with an interference fit. (See Chart A)

Lubrication:
PermalubeŽ Bearings can be lubricated with water, salt water, oil, grease or the liquid being pumped. Liquid lubricants will reduce the coefficient of friction and bearing wear. To insure maximum longevity, the lubricant should be constantly maintained and kept free from abrasive contaminants if possible.

Oil lubricants and greases attract contaminating particles which may shorten bearing life. To minimize bearing contamination, the use of oil or grease seals are recommended.

Proper running clearance is a critical factor in bearing performance. Clearances are necessary to accommodate swell, thermal expansion and an adequate liquid lubrication film in the bearing. (See Chart B)