CN2226498Y - Internal retaining dust-proof cover type rolling guide bearing - Google Patents

Abstract

The utility model provides an internal retaining dust-proof cover type rolling guide bearing, suitable for rolling mills and other high speed rolling wheels. Grooves are arranged on the capped edge of the inner ring of the utility model, the dust cover formed through punching whose inner diameter has buckles is tightly buckled in the grooves, and a certain clearance is arranged between an external diameter and an outer ring. When operating, the dust-proof cover prevents exterior impurities such as water, oxide scale and fly ash from into the bearing. When a small amount of dirt enter into the bearing, the dirt is exhausted out from the clearance under the action of high speed rotating centrifugal force of rolling wheels after the bearing is lubricated with high pressure oil mist, which cleans the bearing and prolongs the service life thereof.

Description

Interior card dust cap formula is rolled and is led a bearing

The utility model relates to a kind of bearing, particularly a kind of in card dust cap formula roll and lead a bearing, be applicable to that rolling mill rolls to lead on position and other high speed runners.

All have on the existing domestic and international rolling mill guiding entered by rolled piece roll type hole guider---milling train is led the position, generally be to lead the position on the low speed milling train with the slip of toroidal, what then adopt on fast mill is one to form right roller type and roll and lead the position, the bearing of upward using the position is led in this rolling to be had: the 6202-Z that Sweden state Aktiebolaget SKF produces (seeing " record of SKF bearings synthesis " that Shanghai scientific and technical literature publishing house publishes in April, 1991) bearing, as shown in Figure 1.The 6202E-Z bearing (seeing Luoyang Beaving Factory's product sample " LYC rolling bearing " in 1993 book) that other has Chinese Luoyang Beaving Factory to produce, as shown in Figure 2, more than the structure type of two kinds of bearings basic identical, its installation form as shown in Figure 3, the rotating speed of roller is greater than per minute 10,000 commentaries on classics, it is at the two ends of scroll wheel the deep groove ball bearing that has one-sided dust cap to be installed that bit architecture is led in rolling, the dust cap that is installed on the bearing outer ring ball track rib is positioned at roller outer end one side, in order to prevent extraneous water, oxide skin, impurity such as powder (ash) dirt enter bearing, this bearing inner race is fixed on the back shaft, the hole of leading to the bearing inboard is arranged in the back shaft, and the gas that contains mist of oil from then on through hole enters the bearing lubrication of roller internal feed.Roller is by being driven by rolled piece and rotating.It is to be beneficial to the outer ring to fix that dust cap is arranged on the bearing outer ring, and the pattern of inner ring rotation also is in order to prevent that lubricant leaks when rotating at a high speed.But, it is different with it that the working condition of a bearing is led in rolling, it is fixedly outer ring rotation of inner ring, because bearing seal condition restriction, the water of working site, oxide skin, impurity such as dust are a lot of, the unavoidable intrusion adheres in the bearing, like this, because bearing rotating speed height, action of centrifugal force can make impurity accumulate on the bearing outer ring ball track, the dust cap that is fixed on the rib of outer ring just can detention be lived these impurity, and make it poly-more many more, be difficult for discharging, so that the loss bearing, reduced bearing life, general bearing life is a class, even the SKF bearing life of import also had only about 5 days, causes steel rolling mill will frequently change rolling to this and leads a bearing, cause on the production cost and lift, improved product price.

The purpose of this utility model provides a kind of rolling that can release dirt in the bearing and leads a bearing, changes the structure between dust cap and the bearing outer ring, and automatic pollution discharge is led the life-span of a bearing to improve to roll when reaching work, reduces cost.

The utility model be achieved in that a kind of in the rolling of card dust cap formula lead a deep groove ball bearing, form by outer ring 1, steel ball 2, retainer 3, inner ring 4 and dust cap 5, through hole for high pressure mist of oil gaseous mixture lubricating bearings is arranged in the back shaft of bearing, this bearing is to make the groove that clamps dust cap 5 on the outer rib of inner ring 4, dust cap 5 internal diameters of drawing have buckle, buckle is fixed tightly in the groove of inner ring 4 outer rib one sides, there is the gap between dust cap 5 external diameters and the outer ring rib, when 1 rotation of outer ring, can not has any interference to exist with dust cap 5.

The utility model has the advantages that: bearing is led when working on the position in rolling, the gases at high pressure that contain mist of oil flow to bearing in the roller not to be had dust cap one side and is lubricated, driving bearing at runner rotates under the centrifugal action that is produced at a high speed, lubricious mist of oil orders about down at high pressure again, from dust cap and the ejection of outer ring gap location that dust cap one side is arranged, so just take away the dirt that accumulates on the bearing outer ring ball track or stoped dirt to invade bearing inside, thereby the cleannes of bearing had both been guaranteed, bearing is run well under kilter, and its working life is greatly enhanced.

Below in conjunction with accompanying drawing the utility model is further described:

Fig. 1 is the bearing arrangement figure that Aktiebolaget SKF produces.

Fig. 2 is the bearing arrangement figure of Chinese Luoyang Beaving Factory.

Fig. 3 rolls to lead a upper bearing (metal) installation diagram.

Fig. 4 is a structure chart of the present utility model.

Referring to Fig. 4, a kind of be used to roll lead deep groove ball bearing on the position, its code name is compiled and is 6020ZA, internal diameter 15mm, external diameter is 35mm, width is the bearing of 11mm, by 1, the one group of steel ball 2 in an outer ring, one secondary retainer 3,4, one dust caps of inner ring 5 that have groove on outer rib are formed, and dust cap 5 adopts the steel plate drawing of 0.3 millimeters thick, dust cap 5 internal diameter limits are buckle shape, just in time clamp in the groove that is fixed tightly in inner ring 4, inner ring 4 is contained in the rotating shaft, has through hole to enter bearing lubrication for high-pressure atomization lubricating oil gas in the rotating shaft.Roller rotates at a high speed during work, bearing outer ring thereupon, action of centrifugal force washes away atomized lubrication oil gas body to take away dirt behind steel ball 2 bearings discharges from the gap location between dust cap 5 and the outer ring 1, thereby it is lubricated and cleaned bearing, get rid of the dirt that environment causes to bearing, improve bearing life, reduced the rolling mill job costs.

Claims (1)

1, a deep groove ball bearing is led in a kind of rolling of interior card dust cap formula, by outer ring (1), steel ball (2), retainer (3), inner ring (4), and dust cap (5) form, this bearing bore diameter is 15mm, external diameter is 35mm, width is 11mm, it is characterized in that: be made into the groove that clamps dust cap (5) on the rib of bearing inner race (4), the internal diameter buckle of dust cap (5) clamps in the groove that is fixed tightly in inner ring (4) one sides, does not interfere the gap when leaving work between external diameter and the bearing outer ring (1).

Images