JP2000220648A - Lubricant feeding type bearing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lubricant feeding type bearing capable of quickly and easily cleaning the bearing, and feeding a lubricant without disassembling the bearing when the lubricant such as grease and a lubricating oil is to be injected into a bearing chamber. SOLUTION: An annular groove 7 is provided for the inner surface of an outer race 1 at a position coming in contact with a bearing ball or roller 4, a grease feeding port 8 and a discharging port 9, communicated with the annular groove, are provided so as to allow a lubricant to be fed to a bearing chamber through the grease feeding port.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating grease bearing capable of cleaning or lubricating a lubricant such as grease or lubricating oil without cleaning the inside.

[0002]

2. Description of the Related Art Mechanical bearings are widely used as components for supporting rotating components, and are of various types. Typical bearings are ball bearings and roller bearings, and are usually filled with a lubricant such as grease or lubricating oil to facilitate the bearing function. However, over time of use of the bearing, the lubricant may degrade and lose its ability to effectively lubricate the bearing elements.

In such a case, conventionally, it has been necessary to remove the bearing from the machine or the like, disassemble and clean the bearing, and then supply lubricant to the bearing. Such a series of operations requires skill, and when performing such operations, oils and fats may adhere to hands and clothes, resulting in very poor workability.

The present invention has been made to solve such a problem, and provides a lubricating and lubricating type bearing capable of quickly and easily cleaning and lubricating without disassembling the bearing. It is in.

[0005]

According to the present invention, a ball or a roller held by a retainer is interposed between an outer ring and an inner ring to form a bearing chamber between the outer ring and the inner ring. Between the outer ring and the inner ring, a side seal plate held by the outer ring is located.In the bearing, at a position in contact with the ball or roller, an annular groove is provided on the inner surface of the outer ring,
A lubrication port and a discharge port communicating with the annular groove are provided in the outer race so that a lubricant such as grease or lubricating oil can be filled into the bearing chamber from the lubrication port. Provide a grease bearing. In a preferred mode of use of the present invention, the greasing port and the discharge port provided on the outer race are also used for cleaning the bearing chamber with a cleaning agent before filling the bearing chamber with the lubricant.

When cleaning the bearing, a cleaning liquid is injected from a greasing port, and after cleaning, a waste liquid is discharged from a lower discharge port. Next, when a lubricant such as grease or lubricating oil is injected from the greasing port, the lubricant is lubricated to the ball or roller through the annular groove, and almost 1/3 to 2/3 of the lubricant is supplied to the bearing chamber.
Is filled so that Of course, after the greasing, the greasing port and the discharge port are closed with a stopper.

[0006]

Referring to the drawings, the bearing according to the present invention, like the conventional one, has an outer ring 1, an inner ring 2, and a ball or ball interposed between the outer ring and the inner ring and held by a retainer 3. It has a roller 4. In order to form a bearing chamber 5 between the outer ring 1 and the inner ring 2, side seal plates 6, 6 held by the outer ring are positioned. An annular groove 7 is formed on the inner surface of the outer race 1, and the annular groove 7 is desirably located at a position in contact with the ball or the roller 4. A greasing port 8 and a discharging port 9 are formed on the side surface of the outer ring 1 at upper and lower positions. The greasing port and the discharging port communicate with the annular groove of the outer ring, and are usually closed with screw plugs 10 and 10. Have been.

[0007] Generally, a lubricant such as grease or lubricating oil is injected into the bearing to make its function smooth, and the injection amount is approximately 1/3 to 2/3 of the bearing chamber. I have. When the grease or lubricating oil is deteriorated or reduced due to long-term use of the bearing, the screw stoppers 10 and 10 are removed, and if necessary, a tube filled with the cleaning liquid is attached to the greasing port 8, and the cleaning liquid is discharged from the tube. Inject into greasing port 8. Then, the cleaning liquid travels through the annular groove 7 to reach the ball or roller, and the inside of the bearing is cleaned more efficiently by rotating the bearing several times. After the washing, the waste liquid is discharged from the lower discharge port 9. Next, the tube filled with crease or lubricating oil is supplied to the greasing port 8.
And grease or lubricating oil is injected into greasing port 8,
The fluid flows along the annular groove 7. At this time, the grease or the lubricating oil is spread over the entire inside of the bearing by rotating the bearing several times. As described above, the injection amount is almost 1 /
When 3 to 2/3 is reached, stop lubrication and stop tap 10, 1
0 is screwed into the greasing port 8 and the discharging port 9, respectively, and these ports are closed. In the above example, the use of the tube as the grease supply means has been described. However, it is obvious that the grease may be supplied using a grease gun or the like. In addition, the greasing port and the discharge port are made to protrude from the side surface of the outer ring, but it is not limited to such a form. Obviously, it may be one of the following. As described above, according to the present invention, cleaning with a cleaning agent and lubrication with a lubricant can be performed on the spot without disassembling the bearing. It is very convenient without soiling with a lubricant such as grease or lubricating oil.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of a bearing according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer ring 2 Inner ring 3 Cage 4 Ball or roller 5 Bearing room 6 Side seal plate 7 Annular groove 8 Greasing port 9 Discharge port 10 Plug

Claims (2)

[Claims] 1. A ball or a roller held by a retainer is interposed between an outer ring and an inner ring, and a bearing chamber is formed between the outer ring and the inner ring. In the bearing having the held side seal plate positioned, an annular groove is provided on the inner surface of the outer ring at a position in contact with the ball or the roller, and a greasing port and a discharge port communicating with the annular groove are provided on the outer ring. A lubricant such as grease or lubricating oil can be filled into the bearing chamber through the greasing port. 2. The lubricant supply system according to claim 1, wherein the greasing port and the discharge port are also used to clean the bearing chamber with a cleaning agent prior to filling the bearing chamber with the lubricant. bearing.