Rolling bearings are one of the most commonly used machine components – and the choice of lubricant is critical to bearing service life and wear. In the converging lubrication gap, the speed and viscosity of the lubricant determine the thickness of the lubricating film. If it is too thin, the rubbing surfaces are not adequately separated. If it is too thick, rolling resistance and heat generation increase.
Filter
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 60 mm²/s
Base oil: mineral oil, ester oil
slide bearing, chains, guides, curves
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 60 mm²/s
Base oil: mineral oil, ester oil
slide bearing, chains, guides, curves
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 68 mm²/s
Base oil: white oil
slide bearing, chains, pneumatics, valves, guides, curves
Operating temperature: -20 °C to 130 °C
Viscosity at 40°C (active ingredient): 165 mm²/s
Base oil: white oil
slide bearing, open gears, racks, guides, curves
Operating temperature: -20 °C to 130 °C
Viscosity at 40°C (active ingredient): 155 mm²/s
Base oil: white oil
slide bearing, racks, guides, curves, open gears
Operating temperature: -30 °C to 300 °C
Viscosity at 40°C (active ingredient): 390 mm²/s
Base oil: PFPE
slide bearing, valves, assembly grease / fittings / o-rings
Operating temperature: -35 °C to 180 °C
Viscosity at 40°C (active ingredient): 160 mm²/s
Base oil: ester oil
Thickener: polyurea
slide bearing, guides, curves
Operating temperature: -35 °C to 180 °C
Viscosity at 40°C (active ingredient): 160 mm²/s
Base oil: ester oil
Thickener: polyurea
slide bearing, guides, curves
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 120 mm²/s
Base oil: mineral oil, ester oil
Thickener: polyurea
slide bearing, chains, open gears, racks, guides, curves, fittings & joints
Operating temperature: °C to °C
Viscosity at 40°C (active ingredient): mm²/s
gearboxes & gearing, slide bearing, chains, assembly grease / fittings / o-rings, open gears, racks, linear guides, ball screws, pneumatics, valves, guides, curves, hydraulics, worm gear, bed ways, schmitz rings, fittings & joints, gearboxes & gearing
Operating temperature: -35 °C to 160 °C
Viscosity at 40°C (active ingredient): 220 mm²/s
Base oil: poly-alpha-olefin
slide bearing, chains, guides, curves, bed ways
Operating temperature: -40 °C to 160 °C
Viscosity at 40°C (active ingredient): 58 mm²/s
Base oil: poly-alpha-olefin
slide bearing, guides, curves, bed ways
sliding
Operating temperature: -30 °C to 170 °C
Viscosity at 40°C (active ingredient): 400 mm²/s
Base oil: poly-alpha-olefin
Thickener: polyurea
slide bearing, chains, open gears, racks, guides, curves
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 272 mm²/s
Base oil: mineral oil
Thickener: lithium (complex)
slide bearing, open gears, racks, guides, curves
sliding, rolling, oscillating
Operating temperature: -15 °C to 100 °C
Viscosity at 40°C (active ingredient): 272 mm²/s
Base oil: mineral oil
Thickener: lithium (complex)
roller bearing, slide bearing, open gears, racks
sliding, rolling
Operating temperature: -15 °C to 100 °C
Viscosity at 40°C (active ingredient): 272 mm²/s
Base oil: mineral oil
Thickener: lithium (complex)
roller bearing, slide bearing, open gears, racks
sliding, rolling
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 97 mm²/s
Base oil: mineral oil
Thickener: lithium (complex)
roller bearing, slide bearing
sliding, rolling
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 97 mm²/s
Base oil: mineral oil
Thickener: lithium (complex)
roller bearing, slide bearing, racks
sliding, rolling
Operating temperature: -20 °C to 130 °C
Viscosity at 40°C (active ingredient): 320 mm²/s
Base oil: mineral oil
Thickener: lithium (complex)
roller bearing, slide bearing, guides, curves
sliding, rolling
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 100 mm²/s
Base oil: mineral oil, ester oil
Thickener: lithium (complex)
roller bearing, slide bearing, linear guides, ball screws, guides, curves
sliding, rolling
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 100 mm²/s
Base oil: mineral oil, ester oil
Thickener: lithium (complex)
roller bearing, slide bearing, linear guides, ball screws, guides, curves
sliding, rolling
Operating temperature: -20 °C to 130 °C
Viscosity at 40°C (active ingredient): 100 mm²/s
Base oil: mineral oil
Thickener: polyurea, solid lubricant
roller bearing, slide bearing, open gears, racks
rolling, oscillating
Operating temperature: -25 °C to 120 °C
Viscosity at 40°C (active ingredient): 150 mm²/s
Base oil: white oil, ester oil
Thickener: other, inorganic
roller bearing
rolling
Operating temperature: -10 °C to 120 °C
Viscosity at 40°C (active ingredient): 72 mm²/s
Base oil: white oil
Thickener: polyurea
roller bearing, slide bearing, guides, curves
Operating temperature: -10 °C to 130 °C
Viscosity at 40°C (active ingredient): 165 mm²/s
Base oil: other, white oil
Thickener: inorganic
roller bearing, slide bearing, racks, linear guides, ball screws, valves, fittings & joints
rotating, sliding, rolling, oscillating
Operating temperature: -10 °C to 130 °C
Viscosity at 40°C (active ingredient): 155 mm²/s
Base oil: other, white oil
Thickener: inorganic
roller bearing, slide bearing, racks, linear guides, ball screws, valves, fittings & joints
rotating, sliding, rolling, oscillating
Operating temperature: -30 °C to 180 °C
Viscosity at 40°C (active ingredient): 370 mm²/s
Base oil: silicone
Thickener: solid lubricant
slide bearing, assembly grease / fittings / o-rings, valves, guides, curves
sliding
Operating temperature: -40 °C to 250 °C
Viscosity at 40°C (active ingredient): 360 mm²/s
Base oil: PFPE
Thickener: solid lubricant
roller bearing, slide bearing, assembly grease / fittings / o-rings, valves
rolling
Operating temperature: -40 °C to 250 °C
Viscosity at 40°C (active ingredient): 360 mm²/s
Base oil: PFPE
Thickener: solid lubricant
roller bearing, valves, assembly grease / fittings / o-rings
rolling
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 97 mm²/s
Base oil: mineral oil
Thickener: lithium (complex)
roller bearing, slide bearing
sliding, rolling
Operating temperature: -20 °C to 180 °C
Viscosity at 40°C (active ingredient): 3800 mm²/s
Base oil: silicone
Thickener: inorganic, polyurea
slide bearing, assembly grease / fittings / o-rings
sliding
Operating temperature: -40 °C to 220 °C
Viscosity at 40°C (active ingredient): 80 mm²/s
Base oil: silicone
Thickener: polyurea
roller bearing, slide bearing
sliding, rolling
Operating temperature: -30 °C to 120 °C
Viscosity at 40°C (active ingredient): 180 mm²/s
Base oil: polyglycol
Thickener: inorganic
roller bearing, slide bearing, assembly grease / fittings / o-rings
sliding, rolling
Operating temperature: -40 °C to 120 °C
Viscosity at 40°C (active ingredient): 150 mm²/s
Base oil: poly-alpha-olefin, ester oil
Thickener: solid lubricant, lithium (complex)
gearboxes & gearing, roller bearing, slide bearing, linear guides, ball screws, gearboxes & gearing
sliding, rolling
Operating temperature: -50 °C to 120 °C
Viscosity at 40°C (active ingredient): 46 mm²/s
Base oil: poly-alpha-olefin, ester oil
Thickener: solid lubricant, lithium (complex)
gearboxes & gearing, roller bearing, slide bearing, gearboxes & gearing
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 30 mm²/s
Base oil: poly-alpha-olefin, ester oil
Thickener: lithium (complex)
roller bearing, slide bearing, guides, curves
sliding, rolling
Operating temperature: -40 °C to 160 °C
Viscosity at 40°C (active ingredient): 48 mm²/s
Base oil: poly-alpha-olefin
Thickener: polyurea
roller bearing
rolling
Operating temperature: -40 °C to 170 °C
Viscosity at 40°C (active ingredient): 400 mm²/s
Base oil: poly-alpha-olefin, ester oil
Thickener: polyurea
roller bearing, slide bearing, guides, curves, fittings & joints
rotating, sliding, rolling
Operating temperature: -25 °C to 130 °C
Viscosity at 40°C (active ingredient): 150 mm²/s
Base oil: white oil
Thickener: polyurea
roller bearing, slide bearing
sliding, rolling
Operating temperature: -40 °C to 170 °C
Viscosity at 40°C (active ingredient): 400 mm²/s
Base oil: poly-alpha-olefin
Thickener: polyurea, solid lubricant
roller bearing, racks, guides, curves
sliding, rolling
Operating temperature: -40 °C to 160 °C
Viscosity at 40°C (active ingredient): 150 mm²/s
Base oil: poly-alpha-olefin
Thickener: polyurea, solid lubricant
roller bearing, slide bearing, racks
sliding, rolling
Operating temperature: -15 °C to 130 °C
Viscosity at 40°C (active ingredient): 380 mm²/s
Base oil: poly-alpha-olefin, white oil, ester oil
Thickener: inorganic
roller bearing, slide bearing, guides, curves
sliding, rolling
Operating temperature: -40 °C to 140 °C
Viscosity at 40°C (active ingredient): 220 mm²/s
Base oil: poly-alpha-olefin, ester oil
Thickener: aluminum complex, solid lubricant
roller bearing, slide bearing, open gears, guides, curves
sliding, rolling
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 72 mm²/s
Base oil: poly-alpha-olefin
Thickener: aluminum complex, solid lubricant
roller bearing, slide bearing, guides, curves
sliding, rolling
Operating temperature: -40 °C to 140 °C
Viscosity at 40°C (active ingredient): 46 mm²/s
Base oil: poly-alpha-olefin
Thickener: inorganic, solid lubricant
roller bearing, slide bearing, assembly grease / fittings / o-rings, pneumatics, valves
sliding, rolling
Operating temperature: -40 °C to 150 °C
Viscosity at 40°C (active ingredient): 400 mm²/s
Base oil: poly-alpha-olefin
Thickener: inorganic
slide bearing, assembly grease / fittings / o-rings, pneumatics, valves, fittings & joints
sliding, oscillating
Operating temperature: -15 °C to 120 °C
Viscosity at 40°C (active ingredient): 46 mm²/s
Base oil: mineral oil, ester oil
gearboxes & gearing, slide bearing, open gears, hydraulics, gearboxes & gearing
Operating temperature: -10 °C to 120 °C
Viscosity at 40°C (active ingredient): 68 mm²/s
Base oil: mineral oil, ester oil
gearboxes & gearing, roller bearing, slide bearing, chains, open gears, hydraulics, bed ways, gearboxes & gearing
Operating temperature: -10 °C to 120 °C
Viscosity at 40°C (active ingredient): 100 mm²/s
Base oil: mineral oil, ester oil
gearboxes & gearing, roller bearing, slide bearing, chains, open gears, hydraulics, bed ways, gearboxes & gearing
Operating temperature: -5 °C to 120 °C
Viscosity at 40°C (active ingredient): 1000 mm²/s
Base oil: other, mineral oil, ester oil
gearboxes & gearing, roller bearing, slide bearing, gearboxes & gearing
Operating temperature: -10 °C to 120 °C
Viscosity at 40°C (active ingredient): 150 mm²/s
Base oil: mineral oil, ester oil
gearboxes & gearing, roller bearing, slide bearing, chains, open gears, hydraulics, bed ways, gearboxes & gearing
Operating temperature: -5 °C to 120 °C
Viscosity at 40°C (active ingredient): 1500 mm²/s
Base oil: other, mineral oil, ester oil
gearboxes & gearing, roller bearing, slide bearing, gearboxes & gearing
Operating temperature: -10 °C to 120 °C
Viscosity at 40°C (active ingredient): 150 mm²/s
Base oil: mineral oil, ester oil
roller bearing, slide bearing, chains, bed ways
Operating temperature: -10 °C to 120 °C
Viscosity at 40°C (active ingredient): 220 mm²/s
Base oil: mineral oil, ester oil
gearboxes & gearing, roller bearing, slide bearing, chains, gearboxes & gearing
Operating temperature: -10 °C to 120 °C
Viscosity at 40°C (active ingredient): 220 mm²/s
Base oil: mineral oil, ester oil
roller bearing, slide bearing, chains, bed ways
Operating temperature: -10 °C to 120 °C
Viscosity at 40°C (active ingredient): 320 mm²/s
Base oil: mineral oil, ester oil
gearboxes & gearing, roller bearing, slide bearing, gearboxes & gearing
Operating temperature: -10 °C to 120 °C
Viscosity at 40°C (active ingredient): 320 mm²/s
Base oil: mineral oil, ester oil
roller bearing, slide bearing, chains, bed ways
Operating temperature: -10 °C to 120 °C
Viscosity at 40°C (active ingredient): 460 mm²/s
Base oil: mineral oil, ester oil
gearboxes & gearing, roller bearing, slide bearing, chains, gearboxes & gearing
Operating temperature: -10 °C to 120 °C
Viscosity at 40°C (active ingredient): 480 mm²/s
Base oil: mineral oil, ester oil
roller bearing, slide bearing, chains
Operating temperature: -5 °C to 120 °C
Viscosity at 40°C (active ingredient): 680 mm²/s
Base oil: other, mineral oil, ester oil
gearboxes & gearing, roller bearing, slide bearing, gearboxes & gearing
Operating temperature: -10 °C to 120 °C
Viscosity at 40°C (active ingredient): 680 mm²/s
Base oil: other, mineral oil, ester oil
roller bearing, slide bearing
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 46 mm²/s
Base oil: white oil
gearboxes & gearing, roller bearing, slide bearing, hydraulics, gearboxes & gearing
Operating temperature: -15 °C to 120 °C
Viscosity at 40°C (active ingredient): 68 mm²/s
Base oil: white oil
gearboxes & gearing, roller bearing, slide bearing, chains, hydraulics, bed ways, gearboxes & gearing
Operating temperature: -15 °C to 120 °C
Viscosity at 40°C (active ingredient): 100 mm²/s
Base oil: white oil
gearboxes & gearing, roller bearing, slide bearing, chains, hydraulics, bed ways, gearboxes & gearing
Operating temperature: -15 °C to 120 °C
Viscosity at 40°C (active ingredient): 150 mm²/s
Base oil: other, white oil
gearboxes & gearing, roller bearing, slide bearing, chains, hydraulics, bed ways, gearboxes & gearing
Operating temperature: -10 °C to 120 °C
Viscosity at 40°C (active ingredient): 220 mm²/s
Base oil: other, white oil
gearboxes & gearing, roller bearing, slide bearing, chains, bed ways, gearboxes & gearing
Operating temperature: -10 °C to 120 °C
Viscosity at 40°C (active ingredient): 320 mm²/s
Base oil: other, white oil
gearboxes & gearing, roller bearing, slide bearing, chains, gearboxes & gearing
Operating temperature: -15 °C to 120 °C
Viscosity at 40°C (active ingredient): 68 mm²/s
Base oil: other, white oil, ester oil
gearboxes & gearing, roller bearing, slide bearing, chains, bed ways, gearboxes & gearing
Operating temperature: -15 °C to 120 °C
Viscosity at 40°C (active ingredient): 100 mm²/s
Base oil: other, white oil, ester oil
gearboxes & gearing, roller bearing, slide bearing, chains, bed ways, schmitz rings, gearboxes & gearing
Operating temperature: -15 °C to 120 °C
Viscosity at 40°C (active ingredient): 150 mm²/s
Base oil: other, white oil, ester oil
gearboxes & gearing, roller bearing, slide bearing, chains, bed ways, schmitz rings, gearboxes & gearing
Operating temperature: -15 °C to 120 °C
Viscosity at 40°C (active ingredient): 220 mm²/s
Base oil: other, white oil, ester oil
gearboxes & gearing, roller bearing, slide bearing, chains, bed ways, schmitz rings, gearboxes & gearing
Operating temperature: -15 °C to 120 °C
Viscosity at 40°C (active ingredient): 320 mm²/s
Base oil: other, white oil, ester oil
gearboxes & gearing, roller bearing, slide bearing, chains, gearboxes & gearing
Operating temperature: -15 °C to 120 °C
Viscosity at 40°C (active ingredient): 460 mm²/s
Base oil: other, white oil, ester oil
gearboxes & gearing, roller bearing, slide bearing, chains, gearboxes & gearing
Operating temperature: -10 °C to 120 °C
Viscosity at 40°C (active ingredient): 460 mm²/s
Base oil: other, white oil
gearboxes & gearing, roller bearing, slide bearing, chains, gearboxes & gearing
Operating temperature: -10 °C to 120 °C
Viscosity at 40°C (active ingredient): 680 mm²/s
Base oil: other, white oil
gearboxes & gearing, roller bearing, slide bearing, chains, gearboxes & gearing
Operating temperature: -35 °C to 140 °C
Viscosity at 40°C (active ingredient): 220 mm²/s
Base oil: ester oil
gearboxes & gearing, roller bearing, slide bearing, chains, compressors, gearboxes & gearing
Operating temperature: -35 °C to 140 °C
Viscosity at 40°C (active ingredient): 320 mm²/s
Base oil: ester oil
gearboxes & gearing, roller bearing, slide bearing, chains, compressors, gearboxes & gearing
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 46 mm²/s
Base oil: polyglycol
gearboxes & gearing, roller bearing, slide bearing, hydraulics, compressors, worm gear, gearboxes & gearing
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 68 mm²/s
Base oil: polyglycol
roller bearing, slide bearing, chains, hydraulics, compressors, worm gear
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 100 mm²/s
Base oil: polyglycol
gearboxes & gearing, roller bearing, slide bearing, chains, compressors, worm gear, gearboxes & gearing
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 1000 mm²/s
Base oil: polyglycol
gearboxes & gearing, roller bearing, slide bearing, worm gear, gearboxes & gearing
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 150 mm²/s
Base oil: polyglycol
gearboxes & gearing, roller bearing, slide bearing, chains, compressors, worm gear, gearboxes & gearing
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 220 mm²/s
Base oil: polyglycol
gearboxes & gearing, roller bearing, slide bearing, chains, compressors, worm gear, gearboxes & gearing
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 320 mm²/s
Base oil: polyglycol
gearboxes & gearing, roller bearing, slide bearing, chains, worm gear, gearboxes & gearing
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 460 mm²/s
Base oil: polyglycol
gearboxes & gearing, roller bearing, slide bearing, chains, worm gear, gearboxes & gearing
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 680 mm²/s
Base oil: polyglycol
gearboxes & gearing, roller bearing, slide bearing, worm gear, gearboxes & gearing
Operating temperature: -45 °C to 150 °C
Viscosity at 40°C (active ingredient): 46 mm²/s
Base oil: poly-alpha-olefin
gearboxes & gearing, roller bearing, slide bearing, chains, hydraulics, compressors, gearboxes & gearing
Operating temperature: -40 °C to 150 °C
Viscosity at 40°C (active ingredient): 68 mm²/s
Base oil: poly-alpha-olefin
gearboxes & gearing, slide bearing, chains, hydraulics, compressors, bed ways, gearboxes & gearing
Operating temperature: -40 °C to 150 °C
Viscosity at 40°C (active ingredient): 100 mm²/s
Base oil: poly-alpha-olefin
gearboxes & gearing, slide bearing, chains, hydraulics, compressors, bed ways, schmitz rings, gearboxes & gearing
Operating temperature: -40 °C to 150 °C
Viscosity at 40°C (active ingredient): 150 mm²/s
Base oil: poly-alpha-olefin
gearboxes & gearing, roller bearing, slide bearing, chains, hydraulics, compressors, bed ways, schmitz rings, gearboxes & gearing
Operating temperature: -35 °C to 150 °C
Viscosity at 40°C (active ingredient): 220 mm²/s
Base oil: poly-alpha-olefin
gearboxes & gearing, roller bearing, slide bearing, chains, compressors, bed ways, schmitz rings, gearboxes & gearing
Operating temperature: -35 °C to 150 °C
Viscosity at 40°C (active ingredient): 320 mm²/s
Base oil: poly-alpha-olefin
gearboxes & gearing, roller bearing, slide bearing, chains, compressors, gearboxes & gearing
Operating temperature: -30 °C to 150 °C
Viscosity at 40°C (active ingredient): 460 mm²/s
Base oil: poly-alpha-olefin
gearboxes & gearing, roller bearing, slide bearing, chains, gearboxes & gearing
Operating temperature: -20 °C to 150 °C
Viscosity at 40°C (active ingredient): 680 mm²/s
Base oil: poly-alpha-olefin
gearboxes & gearing, roller bearing, slide bearing, gearboxes & gearing
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 320 mm²/s
Base oil: mineral oil
Thickener: sodium, sodium
gearboxes & gearing, roller bearing, slide bearing, gearboxes & gearing
rolling
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 340 mm²/s
Base oil: mineral oil
Thickener: sodium, sodium
gearboxes & gearing, roller bearing, slide bearing, gearboxes & gearing
rolling
Operating temperature: -20 °C to 140 °C
Viscosity at 40°C (active ingredient): 460 mm²/s
Base oil: other, white oil
Thickener: polyurea, solid lubricant
roller bearing, slide bearing, open gears, racks, guides, curves
sliding, rolling, oscillating
Operating temperature: -20 °C to 120 °C
Viscosity at 40°C (active ingredient): 150 mm²/s
Base oil: other, white oil
Thickener: polyurea
roller bearing, slide bearing, linear guides, ball screws, pneumatics
sliding, rolling
Operating temperature: -30 °C to 150 °C
Viscosity at 40°C (active ingredient): 60 mm²/s
Base oil: polyglycol
Thickener: lithium (complex)
roller bearing, slide bearing
sliding, rolling
Operating temperature: -15 °C to 130 °C
Viscosity at 40°C (active ingredient): 380 mm²/s
Base oil: poly-alpha-olefin, white oil, ester oil
Thickener: inorganic
slide bearing
sliding
Operating temperature: -40 °C to 140 °C
Viscosity at 40°C (active ingredient): 40 mm²/s
Base oil: poly-alpha-olefin, ester oil
Thickener: polyurea
roller bearing
rolling
Operating temperature: -30 °C to 120 °C
Viscosity at 40°C (active ingredient): 360 mm²/s
Base oil: poly-alpha-olefin, ester oil
Thickener: solid lubricant, lithium (complex)
gearboxes & gearing, roller bearing, slide bearing, linear guides, ball screws, valves, gearboxes & gearing
sliding, rolling
Operating temperature: -40 °C to 230 °C
Viscosity at 40°C (active ingredient): 380 mm²/s
Base oil: poly-alpha-olefin, PFPE
Thickener: polyurea, solid lubricant
roller bearing, fittings & joints
rolling
Operating temperature: -30 °C to 140 °C
Viscosity at 40°C (active ingredient): 320 mm²/s
Base oil: other, poly-alpha-olefin
Thickener: polyurea, solid lubricant
roller bearing, linear guides, ball screws
sliding, rolling
Operating temperature: -40 °C to 180 °C
Viscosity at 40°C (active ingredient): 80 mm²/s
Base oil: poly-alpha-olefin, PFPE
Thickener: polyurea
roller bearing
rolling
The required lubricant viscosity can be estimated, for example, as part of the modified service life calculation according to DIN ISO 281. In practice, however, calculations remain approximations because lubricant additives (EP/AW additives), many base oils (e.g., polyglycol or ester oils), as well as thickeners and solid lubricants in greases can only be accounted for to a limited extent. The same applies to the calculation of relubrication intervals. For this reason, empirical values, insights from comparable applications, and practical endurance tests are often more meaningful than purely mathematical models.
From a physical standpoint, oil lubrication usually offers advantages: Low-viscosity oil reaches the contact zone quickly and promotes effective heat dissipation. In gear combinations, the gearing often determines the required oil viscosity. In addition to viscosity, additives are particularly crucial for wear protection. For highly loaded bearing locations, FE8 test results (DIN 51819) provide a reliable estimate of the lubricating oil’s performance – especially with regard to rolling element and cage wear.
Grease lubrication is always necessary when the lubricant must remain in place, such as when sealing is required or when an oil supply is not available. A proven starting point is a lithium-soap-based mineral oil grease with medium base oil viscosity (approx. 100 mm²/s) and NLGI 2.
Noise- or vibration-damping requirements often call for higher base oil viscosities or low levels of solid lubricants. Homogeneous thickener systems are crucial for low-noise bearings. At continuous temperatures above 120 °C, aging stability and oxidation resistance become key considerations; FE9 tests (DIN 51825) provide an initial assessment of suitability. The NLGI class must be appropriate for the application: NLGI 2 is typically used for manual lubrication, while NLGI 00/000 is used for automatic systems. Low temperatures generally require softer greases (NLGI 0/1), while high temperatures often require stiffer greases (NLGI 3) for better retention.
From a physical standpoint, oil is often better for rolling bearings because it lubricates more quickly and dissipates heat more efficiently. Grease is a good choice when positional stability is required or an oil supply is not available. The decisive factors are load, rotational speed, temperature, and the sealing design.
The viscosity for rolling bearings can be estimated mathematically (e.g., DIN ISO 281), but it depends heavily on operating conditions. What is relevant is the operating viscosity at bearing temperature. Additives and base oils have a significant impact in practice and are not always adequately modeled.
EP and AW additives support wear protection in rolling bearings, especially under high loads and mixed friction conditions. They work in conjunction with the appropriate viscosity and can reduce cage and rolling element wear. For high-load applications, FE8 tests aid in the evaluation.
Relubrication is important for rolling bearings when grease service life, temperature, contamination, or water ingress impair lubrication. Calculated relubrication intervals are only rough guidelines. Practical data, experience from similar applications, and endurance tests often provide a more reliable basis.
For high-speed, low-noise rolling bearings, greases with low- to medium-viscosity base oils and a particularly homogeneous thickener system are important. The ndm value helps with classification. In addition, noise tests should be conducted for each batch to ensure consistent quiet operation.
Whether roller bearings, tapered roller bearings, angular contact ball bearings, or needle roller bearings: Selecting the right lubricant involves combining the appropriate viscosity, additive package, NLGI grade, and relubrication requirements with real-world testing. Talk to ELKALUB – we’ll help you select the right lubricant for your rolling bearings and verify the design based on your actual operating data.
