JPH0128883Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a unit-type shafted roller having a rolling bearing such as a cylindrical roller bearing or a tapered roller bearing interposed in the shaft.

Conventional technology For example, in the back-up roll of a rolling mill or other various mechanical devices, a shafted roller with a rolling bearing interposed in the shaft is used. When used as a roll, in particular, improved lubricity is required, an excellent sealing device is required, and furthermore, ease of maintenance is required.

Problems to be Solved by the Invention The object of this invention is to provide a shafted roller as described above that significantly facilitates its disassembly and assembly, improves its sealing function, and provides appropriate lubrication. With the goal.

Means for Solving the Problems The shafted roller of this invention has a flange 5 formed at one end of the shaft, and one roller guide flange provided at the inner ring end of a rolling bearing fitted to the shaft. 22 and the end ring 8 fitted on the other end of the shaft is brought into contact with the end surface of the other roller guide collar 22 provided at the end of the inner ring, thereby fixing the inner ring 4 to the shaft 1. A part of a cylindrical portion is fitted and fixed to each roller guide collar 22, 22 of the inner ring, and the cylindrical portion is extended to the outer diameter surface of the collar portion 5 of the shaft and the outer diameter surface of the end ring 8. Flingers 10, 10 with L-shaped cross section
A retaining ring 14 is fitted and fixed to the inner circumferential surface of both ends of the outer ring 12 of the rolling bearing inside the flange 13 of the flinger, and an oil seal 15 is arranged on the inner circumferential surface of each retaining ring 14. , each of its seal lips is in sliding contact with a finger.

Embodiment Hereinafter, an embodiment of this invention will be described in detail with reference to the drawings. In a shafted roller in which a rolling bearing such as a cylindrical roller bearing 3 is interposed on the shaft 1, one end of the shaft 1, especially A flange 5 is formed on the shoulder of the part where the bearing inner ring 4 is fitted, and the end surface of the inner ring 4 fitted to the shaft 1 is brought into contact with the flange 5, and the other end of the inner ring 4 is attached to the shaft 1. The inner ring 4 is fixed onto the shaft 1 by means of fixing means such as a snap spring 7 which is engaged with the circumferential groove 6 of the inner ring 4. This fixing means is not limited to the snap ring 7; for example, an end ring 8, which will be described later, may be screwed onto the shaft 1 and the inner ring 4 may be fixed between it and the flange 5, or the inner ring 4 may be fixed to the shaft 1. Alternatively, they may be fitted and fixed with a tight fit.

The end ring 8 that comes into contact with the other end surface of the inner ring 4 as described above is fitted onto the other end of the shaft 1, and a portion of the cylindrical portion 9 is fitted onto the outer diameter of both axial ends of the inner ring 4. A fitted and fixed flinger 10 having an L-shaped cross section is provided, and the inner diameter surface of the cylindrical portion 9 is brought close to or lightly in contact with the outer diameter surface of the collar portion 5 and the outer diameter surface of the end ring 8, and A sealing member such as an O-ring 11 fitted into a circumferential groove provided on each outer diameter surface of the collar portion 5 and end ring 8 is interposed between the radial surfaces.

Retaining rings 14 placed inside the flanges 13 of the flingers 10 are fitted onto the inner diameters of both ends of the outer ring 12 of the rolling bearing, and oil seals 15 are fixedly installed on the inner diameters of each retaining ring 14. The seal lip 16 is brought into sliding contact with the outer diameter surface of the cylindrical portion 9 of the finger 10, and the dust lip 17 is brought into sliding contact with the outer diameter surface of the cylindrical portion 9 of the finger 10.
It is brought into sliding contact with the inner surface of the flange 13 of 0. The dust strip 17 is preferably brought into sliding contact with the inner surface of the flange portion with its tip curved toward the outer diameter side as shown in the figure. Note that the oil seal 15 is not limited to the one having the above-mentioned configuration, and other suitable configurations may be used.

The retaining ring 14 may be fixedly attached to both ends of the outer ring 12, but as shown in the figure, the retaining ring 14 is removably fitted to the inner diameter of both ends of the outer ring 12.
8, and in this case, the retaining ring 14
A circumferential groove is provided on the outer diameter surface of the outer ring 12, and a sealing member such as an O-ring 19 is attached thereto to seal the space between the inner diameter surface of the outer ring 12 and the inner diameter surface of the outer ring 12.

The flinger 10 is assembled into a labyrinth 20 by bringing the outer diameter portion of the flange 17 close to the outer surface of the retaining ring 14 and the inner diameter surface of both ends of the outer ring 12 as shown in the figure.
to form.

Further, 2 is a tire, and the outer ring 12 of the rolling bearing 3
Although the tire 2 is fitted by shrink fitting or other tight fit, the tire 2 may be omitted if necessary, and the outer ring 12 may also serve as the tire 2.

A rolling bearing is a cylindrical roller bearing 3 as shown in the figure.
In addition, various bearings such as tapered roller bearings and spherical roller bearings can be used, and when used as high-load rollers such as back-up rolls of rolling mills,
Use a double-row rolling bearing. Further, the embodiment shows a case where a double-row cylindrical bearing is used, and a guide collar 21 for two rows of rollers is provided in the axial center of the outer ring 12, and the inner ring 4 is divided into two parts in the axial direction. A guide collar 2 for each roller row is provided at the outer end of the bearing of the inner ring 4.
2 is provided, and the flinger 10 is fitted and fixed to the guide collar 22.

In the figure, 23 is a supply path for lubricant such as oil mist provided in the shaft 1, and the hole 23 in the radial direction
4. The above-mentioned lubrication is applied inside the bearing through the circumferential clearance 25 formed between the inner diameter of the inner ring 4 and the shaft 1, the radial oil supply groove 26 formed between the mating end faces of the inner ring 4, etc. as shown by the arrow. supply the agent. 27 is inner ring 4
This is an oil drain hole provided in the radial direction in the guide collar 22 of the guide collar 22, and drains waste oil through a circumferential groove 28 provided on the inner diameter surface of the inner ring 4, an oil drain passage 29 provided in the shaft 1, etc. 30
is a support member (or device) that supports the shaft 1.

This invention has the above-mentioned structure. To assemble the bearing 3 to the shaft 1, first fit the O-ring 11 into the circumferential groove of the flange 5 of the shaft 1, and then fit the O-ring 11 into the circumferential groove of the flange 5 of the shaft 1. Fit the inner ring 4 to the shaft 1, and then
rolling element, retaining ring 14 with oil seal 15,
Then, after assembling the outer ring 12 with the O-ring 19 attached thereto, and fitting the left inner ring 4 with the flinger 10 attached to the shaft 1 and fixing it with the snap spring 7, the end ring 8 with the O-ring 11 attached is attached to the shaft. 1, and disassembly is carried out in the reverse order of the above.

Effects of the invention This invention has the following effects by having the above configuration.

A flange 5 is formed at one end of the shaft, and the end surface of one roller guide flange provided at the inner ring end of the rolling bearing is in contact with this flange, so that positioning of the bearing can be reliably and easily performed. It is easy to assemble and disassemble, and even if the oil seal becomes aged, it can be easily replaced.

Moreover, one end of the inner ring of the rolling bearing is brought into contact with the flange 5, and the other end of the inner ring is also brought into contact with the shaft 1.
Since it is fixed to the roller, the shafted roller can be handled as a unit, and the inner ring can be easily removed, making disassembly and assembly easy.

Furthermore, since the rolling bearing is fixed to the shaft between the shaft flange 5 and the end ring 8 to form a unit structure, the shaft and the rolling bearing can be handled as one, and the outer ring 12 When re-polishing or repairing the outer diameter of the tire or the outer diameter of the tire if the tire is fitted, it is possible to polish the rolling bearing while it is attached to the shaft, and there is no need to remove the rolling bearing from the shaft. , maintenance such as repairs becomes significantly easier.

Further, a part of the cylindrical portion of the flinger 10, 10 having an L-shaped cross section is fitted and fixed to the roller guide flange 22, 22 of the inner ring, and the cylindrical portion is connected to the outer diameter surface of the flange 5 of the shaft and the end ring 8. Since it extends to the outer diameter surface, it is possible to seal between the inner diameter surface of the cylindrical part of the finger, the outer diameter surface of the shaft flange, and the outer diameter surface of the end ring, improving the sealing function. do.

Then, the flanges 13 of the flingers 10, 10
By fitting and fixing the retaining ring 14 on the inner peripheral surface of both ends of the outer ring 12 of the rolling bearing, a labyrinth is formed between the flinger, the retaining ring, and the outer ring.
Improves sealing function.

Further, an oil seal 15 is disposed on the inner circumferential surface of the retaining ring 14, and the seal lips thereof are in sliding contact with the flingers 10, 10, respectively, so that an excellent sealing function is obtained.

This results in a shafted roller with an extremely excellent sealing function.For example, in a lubricating device that supplies oil mist from the shaft 1 side, the lubrication performance is greatly improved, making it perfect for high-load, high-speed rotation rollers. Any lubrication means such as a sealing device and a lubrication device, centralized lubrication, periodic lubrication, etc. can be employed.

Furthermore, by forming a labyrinth with the flange of the finger, the seal lip of the oil seal 15, especially its dust lip, is protected, its lifespan is extended, the sealing function is prevented from deteriorating, and its structure is simplified. This makes it possible to reduce the cost of this type of shafted roller.

[Brief explanation of drawings]

The drawing is a longitudinal sectional view showing half of an embodiment of the invention. DESCRIPTION OF SYMBOLS 1... Shaft, 2... Tire, 3... Cylindrical roller bearing, 4... Inner ring, 5... Flam part, 7... Snut spring, 8... End ring, 9... Cylindrical part, 10
... Flinger, 11 ... O-ring, 12 ... Outer ring, 13 ... Flange, 14 ... Retaining ring, 15 ...
...Oil seal, 16...Main seal lip, 17
...Dust seal, 19...O ring, 20...
Labyrinth, 21, 22... Guide guard.

Claims (1)

[Claims for Utility Model Registration] (1) A flange 5 is formed at one end of the shaft, and the end face of one roller guide flange 22 provided at the inner ring end of a rolling bearing fitted to the shaft is At the same time, the end ring 8 fitted on the other end of the shaft is brought into contact with the end surface of the other roller guide collar 22 provided at the end of the inner ring to fix the inner ring 4 to the shaft 1, and the inner ring 4 is fixed to the shaft 1. A part of the cylindrical portion is fitted and fixed to each of the roller guide flanges 22, 22, and the cylindrical portion is connected to the outer diameter surface of the flanged portion 5 of the shaft and the end ring 8.
Flinger 1 with an L-shaped cross section extending to the outer diameter surface
0 and 10, and a retaining ring 1 is provided on the inner circumferential surface of the outer ring 12 of the rolling bearing on both ends of the outer ring 12 of the rolling bearing.
4 are fitted and fixed, oil seals 15 are arranged on the inner circumferential surface of each retaining ring 14, and the seal lips are brought into sliding contact with the respective flingers. (2) The shafted roller according to claim (1), wherein the oil seal has its main seal lip in sliding contact with the outer diameter surface of the cylindrical portion of the finger and its dust lip in sliding contact with the inner surface of the flange of the finger. (3) The rolling bearing is a double-row rolling bearing,
The outer ring has two rows of rolling element guide flange on the inner diameter of the axial center part, and the inner ring is axially divided into two parts, and each inner ring has a rolling element guide flange at the outer end of the bearing. Utility model registration claim (1) or (2) in which a flinger is fitted and fixed to the guide flange.
The shafted roller described in .