公开(公告)号：US20250101335A1

公开(公告)日：2025-03-27

申请号：US18729688

申请日：2022-06-17

Applicant: JTEKT CORPORTION

Inventor： Yurie YAMASHITA HAGINO ,  Hiroki TANAKA

IPC: C10M169/04 ,  B62D3/12 ,  C10N30/06 ,  C10N40/04 ,  C10N50/10 ,  F16H57/04

Abstract: A grease composition includes a base oil, a thickener, and an extreme pressure additive. The base oil contains trimellitate ester and poly-a-olefin. A proportion of the trimellitate ester to a total amount of the trimellitate ester and the poly-a-olefin is 10.0 mass % or more and 60.0 mass % or less. The thickener contains lithium 12-hydroxystearate and lithium stearate. A proportion of the lithium 12-hydroxystearate to a total amount of the lithium 12-hydroxystearate and the lithium stearate is 5.0 mass % or more and 95.0 mass % or less. The extreme pressure additive contains molybdenum dialkyl dithiocarbamate. A proportion of the molybdenum dialkyl dithiocarbamate to a total amount of the trimellitate ester, the poly-a-olefin, the lithium 12-hydroxystearate, the lithium stearate, and the molybdenum dialkyl dithiocarbamate is 0.6 mass % or more and 16.0 mass % or less.