초록 ▼

In sliding bearing, wherein an overlay, which consists of at least one solid lubricant and a binder resin, covers an aluminum-alloy bearing layer bonded on backing metal, the overlay consists of an upper layer, which contains the solid lubricant essentially consisting of MoS2, and a lower layer, whi

In sliding bearing, wherein an overlay, which consists of at least one solid lubricant and a binder resin, covers an aluminum-alloy bearing layer bonded on backing metal, the overlay consists of an upper layer, which contains the solid lubricant essentially consisting of MoS2, and a lower layer, which contains one or both of solid lubricant and hard additive. The solid lubricant of the lower layer is MoS2and its content is relatively lower than in the upper layer.

대표청구항 ▼

1. A sliding bearing comprising an overlay, consisting of at least one solid lubricant and a binder resin, said overlay covers an aluminum-alloy bearing layer bonded on backing metal, and said overlay consists of an upper layer comprising said solid lubricant consisting essentially of MoS2, and a lo

1. A sliding bearing comprising an overlay, consisting of at least one solid lubricant and a binder resin, said overlay covers an aluminum-alloy bearing layer bonded on backing metal, and said overlay consists of an upper layer comprising said solid lubricant consisting essentially of MoS2, and a lower layer, consisting of one or both of at least one solid lubricant and at least one hard additive, wherein when said solid lubricant of said lower layer is MoS2, its content is relatively lower than that of said upper layer. 2. A sliding bearing according to claim 1, wherein the MoS2content of the upper layer is from 40 to 95 mass %. 3. A sliding bearing according to claim 2, wherein the content of the solid lubricant and hard additive of said lower layer is from 30 to 85 mass %. 4. A sliding bearing according to claim 3, wherein said lower layer contains only the solid lubricant. 5. A sliding bearing according to claim 4, wherein said solid lubricant is MoS2. 6. A sliding bearing according to claim 5, wherein the MoS2content of said upper layer is more than the MoS2content of said lower layer by 10 mass % or more. 7. A sliding bearing according to any one of claims1 through6, wherein the hard additive of said lower layer is at least one selected from the group consisting of Si2N4, SiO2, SiC and Al2O3. 8. A sliding bearing according to any one of claims1 through6, wherein said upper layer consists of two or more sub-layers having different MoS2content of the upper sub-layer is more than the MoS2content of the lower sub-layer. 9. A sliding bearing according to anyone of claims1 through6, wherein said lower layer consists of two or more sub-layers having different additive amount.