| abstract |
Provided is a grease composition that contains (A) a mixed base oil which contains (A1) a low viscosity base oil that has a kinematic viscosity of 10-50 mm 2 /s at 40°C and (A2) a high viscosity base oil that has a kinematic viscosity of 200-700 mm 2 /s at 40°C, (B) a lithium-based thickening agent and (C) a polymer that has a kinematic viscosity of 1,000-100,000 mm 2 /s at 100°C. This grease composition has an apparent viscosity of 50-250 mPa·s at -10°C as measured at a shear rate of 10 s -1 in accordance with JIS K2220 (2013). Consequently, this grease composition has excellent pressure feed properties, while exhibiting excellent wear resistance under poor lubrication conditions. |