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Wood Yard

Whether the mill receives logs or chips, the source wood must be unloaded. Unloaders, which are sometimes called dumpers, use large hydraulic pistons (lifts) to unload chips from trailers or railcars. A log loader is used to unload whole logs from trailers or railcars.

Unloaders are exposed to the weather, heavy dirt, sawdust and other abrasives. Lithium soap-based EP greases such as 3751 and 3752 are generally acceptable for most bearings in these applications. You will find that 6520 MONOLEC® Hydraulic Oil offers tremendous versatility for the hydraulics with its multi-viscosity weight (6110 MONOLEC® Hydraulic Oil or 6802 MULTILEC®) or 20 weight (6120 MONOLEC® Hydraulic Oil or 6803 MULTILEC®).

Slasher decks operate under conditions that are similar to the other types of saws that were previously described. The saw bearings operate at high speeds and are subjected to heavy sawdust, dirt and silica. A light, premium-blended, anti-wear, high-quality paraffin hydraulic oil should meet the requirements of most oil lubricated bearing applications. A lithium EP (3751/3752 ALMAGARD®) grease that will withstand oxidation and contamination should meet the requirements of most grease-lubricated bearings. The key is to keep your eye on the operating environment and climate as a less tacky grease may be more effective such as 1275 ALMAPLEX® Industrial Lubricant.

Barkers operate under dusty, abrasive environments that are frequently exposed to the elements. Due to the slower speeds and heavy loads, a lithium soap-based EP grease that resists corrosion and contaminants is recomended for greased bearings. An industrial gear lubricant such as 1601 or 1606 DUOLEC™ Vari-Purpose Gear Lubricant is preferred for oil-lubricated bearings.

The chipper rotor is mounted on a horizontal shaft supported by bearings on either side. For most chippers where temperatures will not exceed 250oF, a lithium EP grease (3751/3752 ALMAGARD® Vari-Purpose Gear Lubricant) should be used. For applications where the bearings may exceed 250oF, a heavy-duty, high temperature grease may be required to resist softening at high temperatures, have high load-carrying capability, and resist water wash-out. A light, premium-blended, anti-wear, high-quality oil should be used for hydraulic systems associated with chippers, such as our 6801-6807 MULTILEC Industrial Oil.

Chip screens are subject to heavy shock and vibration. An industrial gear lubricating oil with excellent oxidation and thermal stability is recommended for applications that have oil-lubricated bearings. The tackiness and load bearing capabilities of the
1600 series DUOLEC™ Vari-Purpose Gear Lubricants (1601-1609) are a natural for this application. Open chains can use any Lubrication Engineers lubricant with high tackiness to minimize throw-off such as 9102A SYNTEMP® Synthetic Lubricant or 5100A PYROSHIELD® or an appropriate tacky oil like 1601 or 1605 DUOLEC ™ Vari-Purpose Gear Lubricant.

Lubrication Engineers of Canada Limited
2200 Bristol Circle, Oakville, Ontario, L6H 5R3
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