SCIENTIFIC SUMMARY AND USE OF SCIENTIFIC SUMMARY

摘要

Provided is a grease composition which contains (A) a mixed base oil containing (A1) a low-viscosity base oil having a kinematic viscosity at 40°C of 10 to 50 mm2/s and (A2) a high-viscosity base oil having a kinematic viscosity at 40°C of 200 to 700 mm2/s, (B) a lithium-based thickener and (C) a polymer having a kinematic viscosity at 100°C of 1,000 to 100,000 mm2/s, and has an apparent viscosity at -10°C, as measured according to JIS K2220:2013 and at a shear rate of 10 s-1, of 50 to 250 mPa·s. The grease composition is excellent in pumpability and is also excellent in wear resistance under poor lubrication conditions.