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Lubricating grease as well as bearing and gear using the same

A grease composition and technology of vulcanized grease, applied in the field of self-extinguishing grease, can solve the problems of disappearance of flame retardancy, blockage of piping and distribution valves, volatilization of water, etc., and achieve excellent extreme pressure and wear resistance. Effect

Active Publication Date: 2011-07-20
KYODO YUSHI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In Japanese Patent No. 2999553, it is disclosed that the composition of oxides and carbonates of alkali metals and alkaline earth metals has been added to lithium soap grease. There is a possibility of clogging in piping and distribution valves
In Japanese Patent No. 4-202497, a flame retardant grease composition with calcium carbonate and platinum compounds added to silicon grease is disclosed. Blockage of piping and distribution valves
In Japanese Patent No. 2002-146376, a flame retardant grease composition is disclosed in which the grease contains a water-absorbing polymer and moisture, but if the grease is placed in a high temperature environment exceeding 100°C for a long time, Will be volatile and may make flame retardancy disappear
If the centralized grease supply method is used, the added powder may cause blockage of piping and distribution valves

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The composition of the self-extinguishing lubricating grease is as follows: base oil A is 88wt%, thickener A is 10wt%, and load-resistant additive A is 2wt%. The data obtained are: kinematic viscosity of base oil 440, phosphorus (ppm)<1, thermal viscosity load (N) 1961, burning time (seconds) 54, load resistance and self-extinguishing performance.

Embodiment 2

[0042] The composition of the self-extinguishing lubricating grease is as follows: base oil A is 88wt%, thickener A is 10wt%, and load-resistant additive B is 2wt%. The obtained data are: the kinematic viscosity of the base oil is 440, phosphorus (ppm)<1, thermal viscosity load (N) is 1961, burning time (second) is 41, load resistance is good, and self-extinguishing performance is good.

Embodiment 3

[0044] The composition of the self-extinguishing lubricating grease is as follows: base oil A is 86wt%, thickener A is 10wt%, load-resistant additive A is 1wt%, and load-resistant additive B is 3wt%. The obtained data are: kinematic viscosity of base oil 440, phosphorus (ppm)<1, thermal viscosity load (N) 2452, burning time (second) 49, load resistance, and self-extinguishing performance.

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PUM

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Abstract

The present invention relates to an excellent fire-proof (fire safety) grease lubricant composition, and a bearing and a gear which are sealed in the fire-proof grease lubricant composition. The fire proof grease lubricant composition consists of base oil, a thickening agent and a load resistance additive, wherein, the kinematic coefficient of viscosity of the base oil at 40 DEG C is more than 300mm<2> / s, and the phosphorus (represented by P element) density is less than 100 ppm. The flame retardancy grease lubricant of the invention is characterized by fire prevention, excellent extreme pressure and wearing resistance. The bearing and the gear (gearbox, gear device) sealed inside the grease lubricant composition is particularly applicable for the bearing or the gear in ironmaking equipment, forging equipment and other plastic processing equipments.

Description

technical field [0001] The present invention relates to lubricating grease and the use of the lubricating grease. Especially a self-extinguishing grease and bearings and gears using this grease. Background technique [0002] Grease is a kind of viscous lubricant, which consists of three parts: base oil (liquid lubricant), thickener and additives. It is composed of thickener dispersed in base oil (liquid lubricant) A stable solid or semi-solid product. Grease can adhere well to the surface of friction parts of mechanical equipment, and it is not easy to run off and slip off. Especially when the thermal or mechanical action gradually decreases or even disappears, the grease gradually thickens and returns to a certain consistency. Therefore, the selection of grease lubrication does not require frequent replenishment, and has a certain protective effect, which can be applied to some industries. condition. For example, bearings with higher or lower temperature, heavy load and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/00C10M119/24C10M135/18C10M135/02C10N40/02C10N40/04
Inventor 半沢隆
Owner KYODO YUSHI CO LTD