OilLess Bearings and Non-Feroous Bush-Bearings, Liners, Wear Plates, Self Lubricating Bush-Bearings, High Temperature Bearings, Graphite Embedded Bearings, Non-Ferrous and Ferrous Castings, Bearings, Liners, Wear Pads, Split Bearings, White Metal Linining / Relining, Various Non-Ferrous [Phos. Bronze, Gun Metal, Aluminium Bronze, Manganese Bronze, Leaded Bronze, Leaded Tin Bronze, etc, etc]  and Ferrous [EN-31, En-24, Cast Iron Grade-1, S.G. Iron, etc, etc] Castings as per standard and required composition, etc, etc

Handling instructions for OilLess bearings

Installation Instruction for OilLess Bearings

In most cases, OilLess Bearings are used with a press fit in the same manner as general sleeve Bearings. Fit the Bearings into housings using mandrels or press. In case of a relatively large interference, provide both the ID of the housing and the OD of the Bearing with chamfers, and fit the Bearing into the housing with mandrel for easy installation.

Break-in Instruction for OilLess Bearings

At the on start of the operations, contact surfaces of shafts and Bearing are smooth, however, microscopic irregularities are inevitable to develop after continued use. A deviation from true center alignment may also exist. Thus the initial contact between sliding surfaces could be local.

Do not immediately start a regular loaded operation. It may result in damaging the bearing surfaces, leading to a shorter service life. Instead, gradually break-in operations so to smooth out the microscopic irregularities, and allow the entire pressure support area to slowly come in contact without causing damage. This is called a “break-in for familiarity”.

The performance of OILES bearings can be greatly affected by surface roughness, the use of plated or non-plated surfaces and mating materials which form the friction between two solids.

Surface Roughness

In case of solid lubricant Bearings, like OilLess LB#500, OilLess LB#2000, OilLess LB#1000 and OilLess LB#300 their Bearing lives are determined by whether or not a lubricating film of solid lubricants can be formed on sliding surfaces of either mating materials or the Bearings. Surface roughness of mating materials within 3 ~ 12 micron meter is sufficient for proper performance of the Bearings. A mirror finish, as in the cases of oil lubricating Bearings and plastic Bearings, is not necessary.

Surface Treatment

The three main reasons for treating mating surfaces are:

1.      To improve corrosion resistance.

2.      To improve surface hardness.

3.      To improve surface smoothness for better lubricity.

When plating is employed to attain purpose 1 above, hard chrome plating is highly recommended, because it prevents mating materials from rusting and abrasive wear from developing. hard chrome plating also contributes considerably to the lubricity improvement .For slight oscillating motions under high loads, nitriding treatment  on shaft materials is effective. When used under highly corrosive environments such as in seawater, double or triple layered chromium plating is necessary. 

Role of Oiling
        Periodical Oiling is suggested for OilLess Bearing because it will reduce co-efficient of friction and the Bearing temperature, thus improving the Bearing life. Oiling also facilitates performance under high load conditions and secures safety. Other advantages of Oiling include: removal of wear particles, sealing effect against foreign matters, prevention of rust on the shaft material, etc.

Lubricating Oil: In general, motor oil is used. However, grease is recommended for conditions where considerable vibration occurs which scatters oil, or a low speed operation under a high load, which disrupts a lubricating, oil film.

Grease: Grease is superior to lubricating oil in sealing effect, water proof ness and adhesiveness but is inferior in its cooling effect. Grease is often applied when Bearings are frequently splashed with water or where there is considerable vibrating or textile machine. 

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