Training

Basic lessons about greases

What do we need to control?

To know the performance of greases under certain conditions, there are some tests that help us out:

PHISICAL:

	TEMPERATURE
	Drop point, ASTM D-566 y 2265. Dynamic drop point, Creusot-Loire Machine. Life Performance, ASTM D-3527.

	MECHANICAL
	Consistency / Penetration, ASTM D-217. Worked penetration, ASTM D-217. Shell Roll Test, ASTM D-1831.

	WATER
	Water washout test, ASTM D-1264.

	PUMPABILITY
	Pumping at low temperature, ASTM D-1478. Grease fluidity, DIN 51805.

CHEMICAL :

	OXIDATION
	Offman Pump, ASTM D-942.

	CORROSION
	Copper strip, ASTM D-130. Protection against corrosion, ASTM D-1743. Corrosion EMCOR, DIN 51802, IP-220.

	FRETTING CORROSION

SEPARATION:

	TEMPERATURE
	Oil separation, IP-121 Oil separation Federal Test Std. 791-322 T. Car Wheel Bearing, ASTM D-1263.

	PRESSURE
	Oil separation during storage, ASTM D-1742.

	EVAPORATION
	Evaporation in lubricating greases, ASTM D-972. Evaporation in clock glass, FIAT 50511.

LIMIT LUBRICATION:

Four Ball machine, IP-239, DIN 51350, ASTM D-2596 y 2266. Timken machine, ASTM D-2509. Falex machine, ASTM D-3704.