MOLUB-ALLOY® BRB 572
Bearing grease
DESCRIPTION
MOLUB-ALLOY® BRB 572 is a bearing grease, applicable for normal and elevated temperature (max.120°C) and for
long service intervals.
Work and shear stability matches the service life of rolling bearings. Controlled mobility under “full pack” conditions act
as a seal against contamination without excess churning and heat generation.
· The base oils used in MOLUB-ALLOY® BRB 572 are high-quality mineral oils, containing inhibitors against rust
and corrosion, and they are fortified against oxidation.
· This unique grease is outstanding in shear stability and in controlled mobility under shear. This results from the
selection of a most stable lithium thickening system and special manufacturing techniques.
· Load carrying and antiwear properties beyond those of conventional greases result from chemical additives
working synergistically with select MOLUB-ALLOY® lubricating solids, blended uniformly throughout the grease.
The lubricating solids are most effective in protecting the machined surfaces of new bearings in critical runningin
periods. Good bearing surfaces are essential to extended service life.
APPLICATIONS
· MOLUB-ALLOY® BRB 572 is an outstanding grease for all types of bearings (rolling, ball, roller bearings),
including precision built. It is also used in general application, including journal bearings.
· “Full Pack Concept”: customarily, bearing manufacturers recommend packing bearings only 1/3 to ½ full to
avoid churning, shear loss of consistency and overheating. In bearings with minimal grease capacity, MOLUBALLOY
® BRB 572 can occupy effectively 60 % of this capacity.
· The bulk grease surrounding the action zone remains undisturbed, sealing out contaminants and minimizing
“breathing” as a source of oxidation, water vapor and fine dust.
· In industrial operations the good sealing effect prevents dirt from entering the bearing.
· The outstanding physical and chemical stability of MOLUB -ALLOY® BRB 572 allows to extent relubrication
intervals of bearings in inaccessible places.
ADVANTAGES
· Excellent sealing from hazardous environments, including dust, water and water vapor.
· Overall savings are derived from the above, reduced maintenance costs and downtime, smoother and more
efficient operation with extended part life and extended lubricating cycles.
NOTES FOR USE
· MOLUB-ALLOY® BRB 572 is not compatible with sodium or inorganic base greases. Lubrication intervals
should be increased gradually, to ensure effective removal of previous lubricants and the formation of MOLUBALLOY
® solid lubricants on the bearing surfaces.
· MOLUB-ALLOY® BRB 572 may be applied by automatic dispensing systems designed for NLGI 2 consistency.
Castrol International
Pipers Way
Swindon
SN3 1RE
United Kingdom
Tel +44 (0)1793 452111
Fax +44 (0)1703 486083
Molub-Alloy BRB 572
23/12/2003
Product Data
Technical data
Unit Value Test method
MOLUB-ALLOY - BRB 572 -
DIN classification - KPF 2 K – 30 DIN 51502
NLGI grade - 2 DIN 51818
Thickener - Lithium soap -
Worked penetration 0.1 mm 265 - 295 ISO 2137
Dropping point °C > 180 DIN ISO 2176
Penetration drop after 100,000 strokes - Max.25 -
Base oil properties
Viscosity at + 40°C
Viscosity at + 100°C
Flash point
mm²/s
°C
143
13.5
< 230
DIN 51366
ISO 2592
Behavior in the presence of water at + 90°C - 1 DIN 51807/1
Emcor test - 0/0 DIN 51802
Copper corrosion (+ 100°C) - 1 DIN 51811
Roll stability % change 3 ASTM D 1831
Timken EP test, OK load kg 16 ASTM D 2509
Four ball wear test
Wear scar diameter
mm 0.52 ASTM D 2266
Four ball wear test
Wear scar diameter
mm < 0.9 DIN 51350-05-E
SKF-R2F test
Test A
Test B at 120°C
- -
11
DIN 51806
FAG-FE 9 test - passed DIN 51821-02-A/
1500/6000-150
Flow pressure at - 20°C hPa < 600 DIN 51805
1 mm²/s ^ 1cSt
