Multi-purpose mineral grease


The SF-50 multi-purpose mineral grease with ANTIFRICTION TREATMENT offers a cost/benefit ratio superior to all other similar greases on the market.

Characteristics and Benefits

The SF-50 unique formulation includes such elements as:

  • Superior quality mineral base oil;
  • Overbased calcium sulfonate complex;

Its exclusive PROLAB formula brings the SF-50 multi-purpose mineral grease to an exceptional level of performance: it reduces friction, protects against rust, corrosion and oxidation, provides exceptional load resistance as well as greater mechanical stability and excellent moisture resistance.

The exceptional properties of the SF-50 multi-purpose mineral grease bring notable benefits from regular use including less frequent lubricating jobs and substantial savings on maintenance costs.

The SF-50 multi-purpose mineral grease is safe to use as it contains no contaminants harmful to the environment.

Types of Application

The SF-50 is a must for the workshop, the car, RTV and every type of business, no matter what the size or the nature of the operations. It is best suited for greasing joints, pins, slide tracks and bearings with a rotational speed of 1500 rpm or less.

Directions for Use

Always use SF-50 multi-purpose mineral grease in reference to the equipment manufacturer's manual.


Whenever performing a grease change, make sure to validate the compatibility of the various greases used (refer to PROLAB's grease compatibility chart).

Available Sizes

SF-50-2: 435gr, 17kg, 55kg, 180kg

SF-50-0: 415gr, 17kg, 55kg, 180kg

Product Code

# 260: SF-50 Grade 0
# 289: SF-50 Grade 2



Characteristics astm test typical values
typical values
Appearence   Red Red
N.L.G.I. grade   2 0
Viscosity at 40oC D445 130-150 cSt 36,9 cSt
Viscosity at 100oC D445 12,6 cSt 6,1 cSt
Viscosity index D2270 67-87 111
Dropping point D2265 316oC 280oC
Oil separation at 25oC D1742 0,2% 0,2%
Consistency 60X D217 278 (1/10mm) 370 (1/10mm)
Shear stability 100,000X D217 4,3% 2%
Shear stability 10,000X (50/50 with water) D217 18,8% 8,5%
Roll stability D1831 2,6% n.d.
Bomb oxidation, psi drop after 100h D942 1,5 psi n.d.
Bomb oxidation, psi drop after 1000h D942 n.d. 10 psi
4-ball wear (75oC, 40 kg, 1200 t/m, 1h) D2266 0,4 mm 0,42 mm
Load wear index D2596 n.d. 55 kg
Weld load D2596 363 kg 400 kg
Timken OK load D2509 29 kg 25 kg
Rust preventing D1743 pass pass
Water spray resistance at 79oC D1264 2-5% 8%
Copper corrosion rating D4048 n.d. 1b
Torque at -40oC D4693 n.d. 5 Nm
Salt fog corossion (1 mil d.f.t.) B117 n.d. >300 h


23oC (73oF)

-18oC (0oF)

-23oC (-10oF)

-29oC (-20oF)

-34oC (-30oF)




4 gr/min






56,5 gr/min

29 gr/min

8,6 gr/min

3 gr/min