CN2369027Y

CN2369027Y - Roller bearing with internal one direction locating

Info

Publication number: CN2369027Y
Application number: CN 99223719
Authority: CN
Inventors: 李景荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-05-10
Filing date: 1999-05-10
Publication date: 2000-03-15
Anticipated expiration: 2009-05-10

Abstract

The utility model relates to a high-speed railway bus bearing-a cylindrical roller bearing with an inner ring single block edge, which is composed of an outer ring, an inner ring, a retainer, and a rolling body. The utility model is characterized in that the inner ring, the outer ring and the rolling body are made of YB (T) 1-80 or YJZ84 standard vacuum degassed steel; the retainer is made of QT50-20 nodular cast iron and forms a small round-angle square window-hole structure without rivets; a rolling track of the outer ring is provided with convexity. The utility model has the advantages of high tensile strength, high rigidity, good toughness, good vibration damping performance, good abrasive resistance, long service life, etc., has a self-lubrication function and the function of automatic adjustment center, solves the defect that the retainer is easy to brake, and improves the service life of the bearing.

Description

Inner ring single block border roller bearing

The utility model relates to a kind of high-speed railway passenger bearing---inner ring single block border roller bearing.

Bearing be the late 1830s phase by the traditional industry product that imports China abroad into, it is divided into slides and the two big classes of rolling, belonging to spare part in common use is again easily damaged parts, carries out international the unified standard.It serves fields such as industry, agricultural, national defence, railway, traffic, mine, metallurgy, machinery.Communications and transportation is the artery of the national economic development, and international train of China and special express are added up annual requirement according to investigations and reached 10,004 over thousands of covers from external import with annual need of bearing at present, and imported bearing needs a large amount of foreign exchanges.China Railway is for adapting to needs of economic development, and raising carrying capacity changed bearing shell from 1981 be rolling bearing, is the revolution on the railway transport history.At present, according to incompletely statistics, China's different kinds of railways passenger vehicle is carried out maintain and replace system by force, year consumption bearing 300,000 covers.Owing to railway speed increase, imported bearing pours in Chinese market, has impacted the development of national industry in recent years, and country has increased the foreign exchange expenditure again.Therefore passenger vehicle bearing production domesticization, it is imperative to produce homemade high-speed railway passenger bearing.

The purpose of this utility model provides that a kind of selection is good, rational in infrastructure, the life-span improves safe and reliable high-speed railway passenger bearing--the inner ring single block border roller bearing that is applicable to, is used for substituting the German FAG bearing products of Japanese KOYO.

The utility model inner ring single block border roller bearing content Description:

The utility model inner ring single block border roller bearing, form by outer ring, inner ring, retainer and rolling element four parts, it is characterized in that: inner ring, outer ring, rolling element adopt the vacuum-degassed steel of YB (T) 1-80 or YJZ84 standard to make, and retainer adopts QT50-20 spheroidal graphite cast iron to make; Retainer is a no rivet roundlet angle square window hole structure; The raceway of outer ring has convexity, and its convexity is δ=0-0.005mm; Employing has the rolling element of convexity, and its convexity is δ=0.015-0.025mm.

The good employing vacuum-degassed steel of the utility model inner ring single block border roller bearing selection, material purity height, air content is few, can improve the bearing rated load, prolongs bearing working life; Adopt spheroidal graphite cast iron not have rivet roundlet angle square fenestra retainer and have tensile strength height, hardness height, good toughness, damping property is good, wear resistance is good characteristics, and has a self-lubricating function, its wear resistance is higher than 17 times of brass retainers, and the rating life of bearing can be enhanced about more than once; Reasonable in design has been cancelled the stress of inner ring, outer ring and has been concentrated circle to improve the working life of intensity and bearing and have the function of self-aligning; The square fenestra retainer in roundlet angle has solved the drawback of retainer fracture, and the convexity of bearing outer ring ball track has cushioning effect.

Embodiment:

Fig. 1 is an inner ring single block border roller bearing structural representation

The utility model inner ring single block border roller bearing is to realize like this, see that Fig. 1 the utility model is made up of outer ring 1, inner ring 2, rolling element 3, retainer 4 four parts, outer ring 1, inner ring 2 and rolling element 3 adopt the vacuum-degassed steel of YB (T) 1-80 or YJZ84 standard to make, material purity height, air content is few, can improve bearing rated load ability, increase the service life, the outer ring raceway of outer ring 1 has the convexity of δ=0-0.005mm, cushioning effect is arranged, cancel stress and concentrated circle, improved intensity and working life; Retainer 4 is no rivet roundlet angle square window hole structure, increased tensile strength, solved the drawback of retainer fracture, adopt QT50-20 spheroidal graphite cast iron to make, its tensile strength, hardness height, toughness, damping property, wear resistance are good, have self-lubricating function, and wear resistance exceeds 17 times of brass retainers; Rolling element 3 carries out convexity and repaiies type processing, and having convexity is δ=0.015-0.025mm, has high wear resistance and damping property.

Claims

1. high-speed railway passenger inner ring single block border roller bearing, form by outer ring, inner ring, retainer and rolling element four parts, it is characterized in that: inner ring, outer ring, rolling element adopt the vacuum-degassed steel of YB (T) 1-80 or YJZ84 standard to make, and retainer adopts QT50-20 spheroidal graphite cast iron to make; Retainer is a no rivet roundlet angle square window hole structure; The raceway of outer ring has convexity, and its convexity is δ=0-0.005mm; Employing has the rolling element of convexity, and its convexity is δ=0.015-0.025mm.