I.C.E. BMA-136 HBR - Manual (Page 14)

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BEARING INSTALLATION AND MAINTENANCE
NOTE: To prevent premature failure – please ensure greasing instructions below are applied. As well,
tighten bearing set screws, collars, and wheel lugs every four to six months.
ENGINEERING – BALL & ROLLER BEARINGS LUBRICATION
For bearings that are equipped with a hydraulic grease fitting threaded into the housing for ease of lubrication, the proper
amount of lubricant in the bearing is important. Both excessive and inadequate lubrication may cause failure. The bearings
should be re-lubricated while they are rotating (if it is safe to do so); the grease should be pumped in slowly until a slight bead
forms around the seals. The bead in addition to acting as an indicator of adequate re-lubrication provides additional protection
against the entry of foreign matter and helps flush out contaminates in the bearing.
By the time the slight bead is formed, it will be noticed that the bearing temperature will rise. It is not uncommon for the
temperature to rise as much as 30 degrees Fahrenheit after re-lubrication. If necessary to re-lubricate while the bearing is idle,
refer to the recommended re-lubrication grease chart tables on the following page for various sizes of the bearings.
Lubricant-Standard Bearings:
All bearing units are pre-lubricated at the factory with a lithium soap grease which is compatible with multi-purpose grease
readily available from local suppliers. The lubricant selected for factory lubrication uses a highly refined mineral oil with a
high viscosity index, thickened with lithium soap to conform to NLGI grade 2 consistency. A suitable additive package is
added to protect the highly polished rolling contact surfaces from corrosion and oxidation of the lubricant. The lubricant is
satisfactory for an operating temperature range of –30 F to +250 F.
Select standard industrial grade greases that conform to the following specification for optimum bearing performance:
General Duty Ball & Roller;
58-75 SUS @ 210 F
450-750 SUS @ 100 F
Premium Duty Ball & Roller;
68-75 SUS @ 210 F
600-750 SUS @ 100 F
Heavy Duty Roller Bearing;
82 SUS @ 210 F
886 SUS @ 100 F
NOTE: For heavy loaded roller bearing applications, grease with EP additives are often recommended for optimum
performance.