KR0159907B1 - Roller bearing for industrial machine - Google Patents
Roller bearing for industrial machine Download PDFInfo
- Publication number
- KR0159907B1 KR0159907B1 KR1019950023665A KR19950023665A KR0159907B1 KR 0159907 B1 KR0159907 B1 KR 0159907B1 KR 1019950023665 A KR1019950023665 A KR 1019950023665A KR 19950023665 A KR19950023665 A KR 19950023665A KR 0159907 B1 KR0159907 B1 KR 0159907B1
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- South Korea
- Prior art keywords
- oil seal
- circumferential surface
- roller
- shaft
- insertion groove
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
- F16C19/26—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/44—Needle bearings
- F16C19/46—Needle bearings with one row or needles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Of Bearings (AREA)
- Rolling Contact Bearings (AREA)
Abstract
본 발명은 산업기계에 널리 사용되는 롤러 베어링에 관한 것으로서, 종래의 롤러 베어링은 롤러의 오일씰 삽지홈이형이어서 가공작업이 까다롭고 샤프트나 고정링을 결합할 때 오일씰의 얇은 내측단 날개 부위가 말려 들어감에 따라 작업능률이 상당히 떨어져서 생산능률의 저하와 원가상승의 주요인이 되었으며, 약간만 사용해도 오일씰의 얇은 내측단 부위가 쉽게 늘어나거나 퍼져버려서 기밀작용이 떨어짐에 따라 소비자 불만이 가중되는 등 품질상의 문제점이 제기되었다.The present invention relates to a roller bearing widely used in industrial machinery, the conventional roller bearing is the oil seal insertion groove of the roller As it is a type, it is difficult to process and the work efficiency is considerably decreased as the inner edge of the oil seal is rolled up when joining the shaft or the retaining ring. Quality problems have been raised, such as increased consumer dissatisfaction as the medial end portion easily stretches or spreads, resulting in less airtightness.
이에따라 본 발명은 롤러(10)의 내주면 영측단에는 경사형의 삽지홈(11)을 형성하여 가공이 용이하면서도 삽지홈(11)에 끼워지는 오일씰(20)은 상하 내주면이 평형상태를 이루도록 형성하고, 샤프트(30)와 고정링(40)은 외주면중 먼저 끼워지는 선단부에 돌턱(31)(41)을 돌출 형성하여 오일씰(20)의 내주면과 접면될 때 상기 돌턱(31)(41)부위가 오일씰(20)의 내주면과 밀착되게 하여 롤러 베어링의 샤프트와 고정링의 외주면을 밀폐하는 오일씰의 기밀성과 내마모성을 향상시키면서도 오일씰과 샤프트 및 고정링의 조립성을 높혀서 생산성 향상 및 품질 향상을 이루도록 한 것이다.Accordingly, the present invention forms an inclined insertion groove 11 at the inner circumferential surface of the roller 10 so that the oil seal 20 fitted into the insertion groove 11 is formed so that the upper and lower inner peripheral surfaces have an equilibrium state. The shaft 30 and the fixing ring 40 protrude from the outer circumferential surface so as to contact the inner circumferential surface of the oil seal 20 by protruding the protrusions 31 and 41 at the tip end of the outer circumferential surface. The oil seal 20 is in close contact with the inner circumferential surface of the oil seal sealing the shaft and the outer ring of the fixing ring while improving the airtightness and wear resistance of the oil seal, while improving the assembly of the oil seal, shaft and fixing ring to improve productivity and quality. .
Description
제1도(a)는 종래의 롤러 베어링을 보인 분해 사시도이고, (b)는 (a)의 롤러 베어링을 조립한 상태의 횡단면도임.1 (a) is an exploded perspective view showing a conventional roller bearing, (b) is a cross-sectional view of the assembled state of the roller bearing (a).
제2도는 본 발명의 롤러 베어링을 예시한 일부 분해 사시도.2 is a partially exploded perspective view illustrating the roller bearing of the present invention.
제3도(a)는 본 발명에서 오일씰이 마모되기 전 상태의 요부단면도이고,Figure 3 (a) is a cross-sectional view of the main portion of the state before the oil seal is worn in the present invention,
(b)는 (a)에서 오일씰이 마모되어 샤프트나 고정링의 외주면 전체가 오일씰을 압박하는 상태의 요부단면도임.(b) is a sectional view of the main part in which the oil seal is worn in (a) and the entire outer circumferential surface of the shaft or the retaining ring presses the oil seal.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 롤러 11 : 삽지홈10: roller 11: insertion groove
12 : 중공부 20 : 오일씰12: hollow part 20: oil seal
21 : 선단 30 : 샤프트21: tip 30: shaft
40 : 고정링 31,41 : 단턱40: retaining ring 31, 41: step
본 발명은 자동화장치나 주차장, 엘리베이터 등의 산업기계에 널리 사용되는 롤러 베어링(또는 니이들 롤러 베어링)에 관한 것으로, 특히 롤러 베어링의 샤프트와 고정링의 주연에 설치되는 오일씰의 마모됨을 최대한 방지하여 수명연장과 기밀성의 향상을 이룰 수 있으면서도 생산성이 높은 산업기계용 롤러 베어링에 관한 것이다.The present invention relates to a roller bearing (or needle roller bearing) widely used in industrial machines such as automation devices, parking lots, elevators, and the like, in particular, to prevent the wear of oil seals installed at the periphery of the shaft and the fixing ring of the roller bearing to the maximum. The present invention relates to a roller bearing for an industrial machine with high productivity while achieving extended life and improved airtightness.
일반적으로 자동화장치나 주차기, 엘리베이터, 자동차 등의 각종 산업기기에 널리 사용되는 롤러 베어링은 고도의 정밀한 롤러와 샤프트 사이에 니이들 볼을 설치한 원통형의 롤러 베어링으로서, 직선 및 축선 회전운동에 적합한 베어링이며, 높은 경도와 내마모성, 내식성이 좋은 정밀도가 우수한 부품으 조립체이다.In general, roller bearings widely used in various industrial equipment such as automation devices, parking lots, elevators, automobiles, etc. are cylindrical roller bearings with needle balls installed between highly precise rollers and shafts, and are suitable for linear and axial rotational movements. It is a bearing, and is an assembly of parts with high precision, high hardness, high wear resistance, and good corrosion resistance.
그리고 상기의 롤러 베어링은 내부의 니이들볼과 외부 롤러의 접촉 회전운동에 의해 작동되며 저속 및 중고속에 위격하중과 단하중 및 중하중에 적합한 베어링인데, 이러한 롤러 베어링 중에는 샤프트의 취부 축부와 볼트 두부가 0.25㎜~1.0㎜ 정도 편심되어 볼트를 돌리면 간단히 중심축의 위치를 미세 조절할 수 있는 외경마모 보완기능을 갖춘 편심 캠형의 롤러 베어링도 있다.In addition, the roller bearing is operated by the contact rotary motion of the inner needle ball and the outer roller, and is suitable for the low load, the medium speed, the short load and the heavy load. Among these roller bearings, the shaft mounting part of the shaft and the head of the bolt There is also an eccentric cam-type roller bearing with an external wear compensation function that allows for simple adjustment of the position of the central axis simply by turning the bolt by eccentric 0.25mm ~ 1.0mm.
그런데 종래의 롤러 베어링은 제1도(a)에서와 같이 링형의 롤러 내부에 샤프트와 니이들볼을 설치할 때 내부의 오일이나 그리스가 외부로 유출됨을 방지하기 위해 롤러(1)의 내주면 양측에 삽지홈(a)을 형성한 후 상기 삽지홈(1a)에 오일씰(2)을 끼워 설치하고 있으며, 또한 오일씰(2)의 형상도 샤프트(3)나 고정링(4)의 외주면과 밀착되는 내측단(2a) 부위를 얇은 날개처럼 외측으로 경사지면서 돌출되는 형태로 구성하였다.However, the conventional roller bearing is inserted on both sides of the inner circumferential surface of the roller 1 to prevent the oil or grease from leaking out when installing the shaft and the needle ball inside the ring-shaped roller as shown in FIG. After the groove (a) is formed, the oil seal (2) is inserted into the insertion groove (1a), and the shape of the oil seal (2) is also the inner end in close contact with the outer peripheral surface of the shaft (3) or the fixing ring (4) (2a) the site was configured to protrude while inclining outward like a thin wing.
상기한 종래의 롤러 베어링은 롤러(1)의 내주면 양측에 오일씰(2)의 삽지홈(1a)을형으로 가공하여야 되므로 작업이 까다롭고 시간이 오래 걸렸으며, 롤러(1)의 양측 삽지홈(1a)에 오일씰(2)을 끼운 상태에서 양측에서 샤프트(3)와 고정링(4)을 결합할 때 제1도(b)에서와 같이 오일씰의 얇은 날개 형태인 내측단(2a) 부위가 삽입되는 샤프트(3)나 고정링(4)의 내면에 걸리면서 쉽게 말려 들어감에 따라 작업능률이 상당히 떨어졌으며, 이로인해 생산능률이 상당히 떨어져서 원가상승의 주 요인이 되었다.In the conventional roller bearing, the insertion groove 1a of the oil seal 2 is formed on both sides of the inner circumferential surface of the roller 1. Since the process is difficult, it takes a long time, and the shaft (3) and the fixing ring (4) can be combined at both sides with the oil seal (2) inserted in the insertion groove (1a) on both sides of the roller (1). When the inner end (2a) portion of the thin seal of the oil seal is inserted into the inner surface of the shaft (3) or the holding ring (4) is inserted as shown in FIG. As a result, the production efficiency dropped considerably, which led to cost increase.
그리고 조립된 롤러 베어링을 어느정도 사용하다 보면 샤프트(3)나 고정링(4)의 외주면과 접촉되는 오일씰(2)의 내측단(2a)이 쉽게 늘어나거나 퍼져버림에 따라 내부로 불순물이 유입됨은 물론 회전되는 롤러(1)와 마찰되어 열을 많이 받는 니이들볼(5)의 윤활작용을 위해 주입된 오일이나 그리스가 외부로 흘러나와 유출되므로 소비자들의 불만이 가중되는 등 품질에 있어서도 경쟁력이 상당히 떨어지는 문제점이 있었다.In addition, when the assembled roller bearing is used to some extent, as the inner end 2a of the oil seal 2 in contact with the outer circumferential surface of the shaft 3 or the fixing ring 4 is easily stretched or spread, impurities are introduced into the inside. The oil or grease that is injected for lubrication of the needle ball 5, which is rubbed with the rotating roller 1 and receives a lot of heat, flows out and flows to the outside, which leads to an increase in customer dissatisfaction. There was a problem.
이에따라 본 발명은 롤러에 오일씰의 삽지홈 형태를 가공이 용이한 구조로 하고, 샤프트와 고정링의 조립을 용이하게 하여 생산성을 높히면서도 롤러 베어링을 사용하면 할 수록 오일씰의 밀봉작용이 상승되도록 하여 품질향을 이룰 수 있는 롤러 베어링을 제공하는데 그 목적이 있다.Accordingly, the present invention has a structure in which the insert groove of the oil seal on the roller is easy to process, the assembly of the shaft and the retaining ring to facilitate the assembly, while increasing the productivity, the more the roller bearing is used, the higher the sealing action of the oil seal quality The object is to provide a roller bearing that can achieve incense.
이와같은 본 발명의 목적은 롤러의 내주면 양측단에 형성하는 오일씰의 삽지홈을 안으로 갈수록 넓어지는 경사형으로 형성하고 오일씰은 외주면 선단이 상기 삽지홈의 경사면과 같은 경사각도를 이루도록 형성하며, 샤프트와 고정링은 외주면중 먼저 끼워지는 선단부위가 약간 돌출되게 단턱을 형성한 롤러 베어링으로 구성함으로써 달성되는 것이다.The object of the present invention as described above is formed in the inclined shape of the insertion groove of the oil seal formed on both sides of the inner circumferential surface of the roller toward the wider and the oil seal is formed so that the tip of the outer circumferential surface to form the same inclination angle as the inclined surface of the insertion groove, The retaining ring is achieved by constructing a roller bearing in which a stepped portion is formed so that the leading end portion of the outer circumferential surface is slightly protruded.
이하 본 발명의 목적을 효과적으로 달성할 수 있는 바람직한 실시예로서 그 기술구성 및 작용효과를 첨부한 별첨의 도면에 의해 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings, in which technical constitutions and effects are attached as preferred embodiments of the present invention.
제2도는 본 발명이 실시된 롤러 베어링의 일부 분해 사시도로서, 롤러(10)의 내주면 양측단에 내측으로 갈수록 구경이 넓어지는 경사형의 삽지홈(11)을 형성하고 상기 삽지홈(11)에 끼워지는 오일씰(20)은 일자형으로서 몸체의 상하 내주면이 평형상태를 이루도록 형성하되 외주면 선단(21)이 상기 삽지홈(11)의 경사면과 같은 각도로 경사지게 형성하고 상기 오일씰(20)을 삽지홈(11)에 끼웠을 때 오일씰(20) 이면에 중공부(12)가 형성되게 한다.2 is a partially exploded perspective view of the roller bearing according to the present invention, the inclined insertion groove 11 is formed in both sides of the inner circumferential surface of the roller 10 toward the inner side of the roller bearing 10 to the insertion groove 11 The oil seal 20 to be fitted is formed in a straight shape so that the upper and lower inner circumferential surfaces of the body are in an equilibrium state, but the outer circumferential front end 21 is formed to be inclined at the same angle as the inclined surface of the insertion groove 11 and the oil seal 20 is inserted into the groove ( 11) when the hollow portion 12 is formed on the back surface of the oil seal (20).
그리고, 샤프트(30)와 고정링(40)은 외주면중 먼저 끼워지는 선단부에 돌턱(31)(41)을 돌출 형성하여 오일씰(20)의 내주면과 접면될 때 샤프트(30)와 고정링(40) 선단의 돌턱(31)(41)은 오일씰(20)의 내주면과 밀착되고 그 후미는 오일씰(20)의 내주면과 약간의 간격이 유지되도록 한 것으로서, 도면중 미설명 부호(50)은 니이들볼 이다.In addition, the shaft 30 and the fixing ring 40 protrude from the outer circumferential surface of the front end to be fitted with the protrusions 31 and 41 so that the shaft 30 and the fixing ring 40 are in contact with the inner circumferential surface of the oil seal 20. ) The stepped protrusions 31 and 41 are in close contact with the inner circumferential surface of the oil seal 20, and the rear end thereof is such that a slight distance from the inner circumferential surface of the oil seal 20 is maintained. It is a ball.
이와같이 형성된 본 발명은 롤러(10)를 가공할 때 그 양측 내주면에 경사형의 삽지홈(11)을 형성하는 것이므로 종래의형 삽지홈을 형성하는 것보다 가공이 용이하여 생산성을 높힐수가 있으며, 상기 삽지홈(11)에 오일씰(20)을 끼울 때에도 삽지홈(11)이 안으로 들어갈수록 넓게 경사져 있고 오일씰(20)의 외주면중 먼저 삽입되는 선단(21)이 삽지홈(11)의 경사면과 같은 각도로 경사져 있으므로 오일씰(20)의 삽입작업이 용이한 것이다.The present invention formed as described above forms a slanted insertion groove 11 on both inner peripheral surfaces thereof when machining the roller 10. Machining is easier than forming a mold inserting groove can increase the productivity, even when inserting the oil seal 20 in the insertion groove 11, the insertion groove 11 is inclined wider as it enters the outer peripheral surface of the oil seal 20 Since the tip 21 to be inserted first is inclined at the same angle as the inclined surface of the insertion groove 11 is easy to insert the oil seal 20.
그리고 상기와 같이 오일씰(20)을 삽입한 상태에서 샤프트(30)나 고정링(40)을 결합할 때 오일씰(20)의 내외 주면이 샤프트(30)나 고정링(40)의 외주면과 평형상태를 이루고 있으므로 샤프트(30)나 고정링(40)의 삽입시 종래처럼 오일씰의 일측단이 말려 들어갈 우려가 전혀 없이 쉽게 조립할 수가 있는 것이며, 또한 샤프트(30)나 고정링(40)의 외주면중 선단의 돌턱(31)(41)만이 오일씰(20)의 내주면과 접면되는데 이때 상기 돌턱(31)(41)이 접면되는 오일씰(20)의 이면과 롤러(10)의 삽지홈(11) 사이에 중공부(12)가 형성되어 있으므로 샤프트(30)와 고정링(40)의 삽입이 보다 용이하게 이루어지는 것이다.When the shaft 30 or the fixing ring 40 is coupled in the state where the oil seal 20 is inserted as described above, the inner and outer main surfaces of the oil seal 20 are in equilibrium with the outer circumferential surface of the shaft 30 or the fixing ring 40. Therefore, when inserting the shaft 30 or the fixing ring 40, one end of the oil seal can be easily assembled without any risk of curling as in the prior art, and the tip of the outer peripheral surface of the shaft 30 or the fixing ring 40 Only the protrusions 31 and 41 of the oil seal 20 is in contact with the inner circumferential surface of the oil seal 20 is in contact with the back surface of the oil seal 20 and the hollow between the insertion groove 11 of the roller 10 Since the part 12 is formed, the shaft 30 and the fixing ring 40 are more easily inserted.
이러한 본 발명은 상기와 같이 샤프트(30)와 고정링(40)을 롤러(10)의 양단에 조립한 상태에서 사용할 때 처음에는 오일씰(20)의 내주면에 강하게 압착된 상태를 유지하고 있는 샤프트(30)와 고정링(40)의 돌턱(31)(41) 부위에 의해 외부에서 불순물이 유입된다거나 또는 내부에 주입된 오일이나 그리스가 외부로 누출됨을 방지할 수가 있다.The present invention, when used in the state in which the shaft 30 and the retaining ring 40 assembled to both ends of the roller 10 as described above, at first the shaft that is maintained in a strongly compressed state on the inner circumferential surface of the oil seal 20 ( 30) and the protrusions 31 and 41 portions of the fixing ring 40 can prevent impurities from flowing out or oil or grease injected into the outside from leaking to the outside.
그런데 이러한 본 발명은 롤러(10)를 장시간 사용함에 따라 샤프트(30)나 고정링(40) 외주면의 돌턱(31)(41) 부위와 접촉되는 오일씰(20) 부분이 마모되기는 하나, 이때 돌턱(31)(41)과의 접촉부위가 마모되면 될 수록 상기 돌턱(31)(41) 부위가 점점 오일씰(20)을 파고들어가 압박하면서 깊숙히 접면됨에 따라 샤프트(30)나 고정링(40)의 돌턱 후미부위 전체가 오일씰(20)의 내주면에 밀착되면서 더욱 밀폐력이 향상되는 효과가 있다.However, in the present invention, the oil seal 20 is in contact with the portion of the shaft 30 or the fixing jaw 31, 41 of the outer circumferential surface of the shaft 30 or the fixed ring 40 as the roller 10 is used for a long time. 31) (41) as the contact portion wears out, the more the stone jaw (31) (41) area is gradually dug into the oil seal 20, the deeper the fold of the shaft (30) or the fixed ring (40) As the entire rear part is in close contact with the inner circumferential surface of the oil seal 20, the sealing force is further improved.
이러한 본 발명은 상기에서와 같이 롤러(10)의 일측에는 샤프트(30)를 조립하고 타측에는 고정링(40)을 조립하는 타입의 롤러 베어링 뿐만 아니라 롤러(10)의 양측에 다같이 고정링(40)이 조립되고 니이들볼(50)의 내주면에 내륜이 설치되는 타입의 롤러 베어링에도 적용 가능한 것이다.The present invention as described above, as well as the roller bearing of the type to assemble the shaft 30 on one side of the roller 10 and the fixing ring 40 on the other side as well as the fixing ring on both sides of the roller 10 ( 40) is assembled and can be applied to the roller bearing of the type in which the inner ring is installed on the inner circumferential surface of the needle ball (50).
이상에서와 같이 본 발명은 롤러 베어링을 구성함에 있어서 오일씰이 내설되는 롤러 몸체의 가공과 오일씰의 결합작업이 상당히 용이하면서도 종래와 같이 오일씰의 날개부분이 없고 상하내주면이 수평상태이므로 샤프트나 고정링의 조립이 신속 간편하여 생산성을 상당히 향상시켜서 원가절감의 효과가 큰 것이며, 롤러 베어링을 일정기간까지는 사용하면 할 수록 오일씰의 밀폐력이 점점 향상되어 내부로 불순물이 유입되거나 내부의 오일 또는 그리스가 외부로 누출될 우려가 없는 것이므로 품질향상에 의한 경쟁력을 보다 높힐 수 있는 매우 유용한 발명이다.As described above, in the construction of the roller bearing, the oil seal is installed in the roller body in which the oil seal is installed, and the operation of the oil seal is fairly easy. It is easy to assemble quickly and greatly improves the productivity, and the effect of cost reduction is great. The more the roller bearing is used for a certain period, the more the sealing force of the oil seal is improved, and impurities or internal oil or grease leak to the outside. It is a very useful invention that can raise the competitiveness by improving the quality, so there is no fear.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950023665A KR0159907B1 (en) | 1995-08-01 | 1995-08-01 | Roller bearing for industrial machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950023665A KR0159907B1 (en) | 1995-08-01 | 1995-08-01 | Roller bearing for industrial machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR970011463A KR970011463A (en) | 1997-03-27 |
| KR0159907B1 true KR0159907B1 (en) | 1999-03-30 |
Family
ID=19422564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950023665A KR0159907B1 (en) | 1995-08-01 | 1995-08-01 | Roller bearing for industrial machine |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR0159907B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190018380A (en) | 2017-08-14 | 2019-02-22 | (주)청호시스템 | roller assembly |
| KR20190068780A (en) | 2017-12-11 | 2019-06-19 | (주)청호시스템 | roller assembly |
| KR102243454B1 (en) | 2019-12-23 | 2021-04-23 | (주)청호시스템 | Roller Assembly |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101433233B1 (en) * | 2012-11-28 | 2014-08-22 | 롯데케미칼 주식회사 | Resin composition for preparing of porous membrane of zinc-bromine redox flow battery and preparation method for porous membrane of redox flow battery |
-
1995
- 1995-08-01 KR KR1019950023665A patent/KR0159907B1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190018380A (en) | 2017-08-14 | 2019-02-22 | (주)청호시스템 | roller assembly |
| KR20190068780A (en) | 2017-12-11 | 2019-06-19 | (주)청호시스템 | roller assembly |
| KR102243454B1 (en) | 2019-12-23 | 2021-04-23 | (주)청호시스템 | Roller Assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| KR970011463A (en) | 1997-03-27 |
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