Lubricant composition and rolling unit

A technology of lubricant composition and lubricating oil, applied in the direction of lubricating composition, thickener, petroleum industry, etc., can solve problems such as poor lubrication, detachment, and worn balls, and achieve improved sound characteristics, reduced rolling torque, and improved friction The effect of the characteristic

Inactive Publication Date: 2002-07-03
NSK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0011] Reducing the amount of lubricating oil can reduce the torque, but poor lubrication can easily cause wear or ball separation

Method used

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  • Lubricant composition and rolling unit
  • Lubricant composition and rolling unit
  • Lubricant composition and rolling unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0064] Embodiment 1-5, comparative example 1-5

[0065] Table 1 and Table 2 show the lubricant compositions and properties of Examples 1-5 and Comparative Examples 1-5. The total amount of lithium soap and base oil is 950g, and 50g of antioxidant, antirust agent and metal deactivator are added thereto to form a lubricant composition with a total amount of 1000g. The dynamic viscosity (40°C) of the base oil (mixed oil of a polar base lubricating oil and a non-polar lubricating oil) is described in the same table. The preparation method is to dissolve hydroxystearic acid in various non-polar lubricating oils, react with lithium oxide to form lithium soap, heat it to higher than 210°C, and dissolve the lithium soap in lubricating oil with polar groups, Hold at 200°C for 60 minutes, then cool down to 140°C at a rate of 1°C / min, and add additional base oil (synthetic hydrocarbon oil + polar base lubricating oil) heated to 140°C when it is lower than 140°C , into a three-stage rol...

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Abstract

A grease composition is disclosed, wherein a metallic soap-base thickener containing a long-fiber material having a major axis part length of at least 3 mum is blended with a base oil obtained by mixing a lubricating oil having a polar group within the molecule structure and a non-polar lubricating oil, which can improve the initial sound (cage sound) of bearing at the starting of operation in a low-temperature environment and is effective on the reduction of fretting damage (abrasion) or torque, and also a rolling bearing and a linear acting apparatus each obtained by packing the grease composition are disclosed, which exhibit excellent low-temperature acoustic property and are reduced in the fretting damage (abrasion) or torque.

Description

technical field [0001] The present invention relates to various motor rolling bearings, linear guides, ball screw devices and other linear motion devices used in general industries, and lubricant compositions enclosed in rolling devices of these devices. Small fretting wear (friction) and bearing torque technology Background technique [0002] Take the driving motor of an air conditioner (hereinafter referred to as "air conditioner") used in general industries as an example. In recent years, this kind of air conditioner has been developed in the direction of high performance or multifunctionality. For example, through frequency conversion control, high-speed operation is used for rapid cooling to reduce the indoor temperature in a short time, and low-speed operation is used to maintain the indoor temperature at a certain level. degree. Along with this, during low-speed operation, low-noise operation is required to suppress the sound of blowing air,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M117/04C10M169/02C10M169/06C10M171/06
CPCC10M117/04C10N2230/12C10M2207/2805C10N2210/01C10M2207/0406C10M2207/1285C10M169/02C10N2220/086C10N2240/06C10M2207/2835F16C33/6633C10N2230/10C10M169/06C10N2230/06C10M171/06C10N2230/14C10M2203/1006C10N2250/10C10N2220/022C10N2010/02C10N2020/02C10N2030/06C10N2030/10C10N2030/12C10N2030/14C10N2040/06C10N2050/10C10N2020/063
Inventor 杉森庸一郎横内敦住谷寿夫中道治
Owner NSK LTD
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