摘要:
A grease for a rolling bearing of an information recording and reproducing apparatus contains a base oil, a thickener, and at least one kind of an antioxidant selected from an amine-based antioxidant expressed by the General Formula (1), and a phenol-based antioxidant expressed by the General Formula (2). The base oil contains a refined mineral oil classified as Group III in a base oil category defined by the American Petroleum Institute, and the flash point of the refined mineral oil is 240° C. or higher.
摘要:
A grease composition includes a base oil, a thickener and at least one kind of an antioxidant selected from an amine-based antioxidant and a phenol-based antioxidant expressed by the following respective general formulas (1) and 2: The base oil contains a poly-α-olefin and a mineral oil. A mass ratio of poly-α-olefin/mineral oil is 1.25 to 9.
摘要:
Grease comprises a base oil and a thickener. The base oil contains mineral oil and poly-α-olefin, the proportion of the mineral oil is 10% by mass to 40% by mass in 100% by mass of the base oil, and a kinematic viscosity v1 of the mineral oil at 40° C. is higher than a kinematic viscosity v2 of the poly-α-olefin at 40° C. The base oil comprises a refined mineral oil that is classified as Group III in a base oil category defined by the American Petroleum Institute, and the flash point of the refined mineral oil is 240° C. or higher. A rolling bearing contains the grease, a rolling bearing device includes a shaft supported by the rolling bearing device, and an information recording and reproducing apparatus includes the rolling bearing device.
摘要:
Provided are grease containing a base oil and a thickener, a rolling bearing including the grease, a rolling device 6, and an information recording and reproducing apparatus 1. The base oil contains mineral oil and poly-α-olefin, a proportion of the mineral oil is 10% by mass to 40% by mass in 100% by mass of the base oil, and a kinematic viscosity ν1 of the mineral oil at 40° C. is higher than a kinematic viscosity ν2 of the poly-α-olefin at 40° C.