JP3738484B2 - Linear motion guide bearing device with lubricant supply device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a linear motion guide bearing device, and in particular, a large number of rolling elements in a rolling linear motion guide bearing device, rolling grooves in which the rolling elements roll, or a sliding guide surface of a guide shaft in a sliding linear motion guide bearing device. The present invention relates to a linear motion guide bearing device with a lubricant supply device that can automatically supply a lubricant over a long period of time.
[0002]
[Prior art]
Conventionally, linear motion guide bearing devices generally used include rolling linear motion guide bearing devices and sliding linear motion guide bearing devices. The former, for example, FIG. 14, there is a linear guide apparatus as shown in FIG. 15. This is provided with a guide rail 1 as a guide shaft extending in the axial direction and having a rolling element rolling groove 3 on the outer surface, and a slider 2 as a guided member assembled across the guide rail 1. It has been known.
The slider 2 comprises a slider main body 2A and end caps 2B attached to both ends thereof. The slider main body 2A is provided on the inner side surfaces of both sleeve portions 4 with the load rolling element rolling facing the rolling element rolling groove 3 of the guide rail 1. The moving groove 5 is formed, and a rolling element return path that penetrates the thick portion of the sleeve portion in the axial direction is provided.
On the other hand, the end cap 2B has a curved path that connects the rolling element rolling groove of the slider body 2A and the rolling element return path parallel to the rolling element rolling path. A rolling element circulation path is formed. A large number of steel balls B, which are rolling elements, are loaded in the rolling element circulation path and the load rolling element rolling grooves 5.
[0003]
The slider 2 assembled to the guide rail 1 moves smoothly along the guide rail 1 through the rolling of the rolling elements B in the opposing rolling element rolling grooves 3 and 5, and during the movement, the rolling element B Circulates infinitely through the rolling element circulation path in the slider. The slider 2 is provided with side seals 6 on both ends and an under seal 7 on the lower surface for dust prevention.
[0004]
By the way, regarding lubrication of such a conventional linear guide device, a grease nipple 9 or an oil supply pipe is usually attached to the oil supply joint 8 formed on the end cap 2B of the slider 2 (or the side surface of the slider body 2A). Accordingly, the rolling elements are lubricated by supplying grease and lubricating oil to the rolling element circulation circuit using an external device such as a grease gun and an oil supply pump.
[0005]
[Problems to be solved by the invention]
However, the lubrication method using the lubricating oil or grease directly as described above has the following various problems.
[0006]
In particular, when the linear guide bearing device is used in a high temperature environment, the lubricant filled in the device flows and flows out to the outside. I must.
[0007]
Further, in the case of use in an environment with a large amount of foreign matter, for example, in a wood dust or powdery foreign matter, the filled lubricant may be sucked out by the foreign matter, resulting in poor lubrication.
[0008]
In many cases, the linear guide bearing device is used inside a mechanical device where it is difficult to replenish the lubricant from the outside.
In the case of grease, it is easy to forget to replenish regularly. In the case of oil, an oil supply pump and piping are required, resulting in high costs, and it is difficult to collect used oil.
[0009]
Therefore, the present invention has been made paying attention to such a conventional unsolved problem, and instead of supplying a lubricant from the outside of the linear motion guide bearing device, a lubricant-containing rubber or synthetic resin material is provided. The lubricant supply member is formed by the above, and this is incorporated into the oil supply passage in the device constituent member, so that the sliding guide surface of the guide shaft in the rolling element, the rolling member rolling groove, or the sliding linear guide bearing device in the device In contrast, an object of the present invention is to provide a long-life linear motion guide bearing device with a lubricant supply device that can automatically supply a lubricant stably over a long period of time.
[0010]
[Means for Solving the Problems]
In the invention according to claim 1 of the present invention for achieving the above object, a guided member is assembled to a guide shaft that has a rolling element rolling groove on an outer surface and extends in the axial direction, and the guided member is provided inside. the rolling element facing the rolling groove load rolling element rolling grooves and Rutotomoni comprising a rolling element circulating path communicating with the load rolling element rolling groove, and a right and left sleeves and the connecting portion connecting the both sleeves In the linear motion guide bearing device in which a large number of rolling elements are slidably loaded in the load rolling element rolling groove and the rolling element circulation path, the guided member includes the rolling element circulation path and / or the load. It has an oil supply passage that communicates with the rolling element rolling groove, has a housing hole that communicates with the oil supply passage and extends in the axial direction, and a housing hole that communicates with the oil supply passage and extends in the axial direction. has, on the storage hole, the lubricant supply member made of lubricant-containing rubber or synthetic resin Type, characterized in that the lubricant supply member was repression state by the elastic member.
[0011]
According to a second aspect of the present invention, a guided member is assembled to a guide shaft that has a sliding guide surface on the outer surface and extends in the axial direction, and the guided member connects the left and right sleeve portions with both sleeve portions. in the linear guide bearing apparatus provided with a section, the guided member and has a supply passage communicating with the sliding guide surface, it has a storage hole extending axially through the fuel supply passage and communicating with the connecting portion In addition , a lubricant supply member made of a lubricant-containing rubber or synthetic resin is inserted into the housing hole, and the lubricant supply member is elastically pressed by an elastic member .
[0013]
The invention according to claim 1 of the present invention is preliminarily contained from a lubricant supply member made of a lubricant-containing rubber or synthetic resin inserted into a storage hole provided in a guided member of a rolling linear motion guide bearing device. A certain lubricant gradually oozes out over time, flows from the oil supply passage through which the storage hole communicates to the rolling element circulation passage and / or the load rolling element rolling groove, and is uniformly supplied to the surface of the rolling element. Therefore, stable lubrication is performed for a long time without supplying grease or lubricating oil from the outside.
[0014]
Further, the invention according to claim 2 of the present invention is preliminarily contained from a lubricant supply member made of a lubricant-containing rubber or synthetic resin inserted into a storage hole provided in a guided member of a sliding linear motion guide bearing device. The lubricant gradually oozes out over time, and is uniformly supplied from the oil supply passage through which the storage hole communicates to the sliding guide surface of the guide shaft and the sliding surface of the guided member facing the guide shaft. Therefore, stable lubrication is performed over a long period of time even in a high temperature adverse environment without supplying grease or lubricating oil from the outside.
[0015]
According to the first and second aspects of the present invention, the lubricant supply member inserted into the storage hole of the rolling linear motion guide bearing device or the sliding linear motion guide bearing device is elastically pressed by the elastic member. due to the stuff, the lubricant supply member is pressed by the elastic member, it is supplied to the lubricant GaJun Sawa containing. Further, it is possible to squeezed most of containing lubricant from the lubricant supply member, to supply without wasting.
[0016]
The lubricant-containing rubber or synthetic resin member of the present invention will be described in detail below.
The lubricant-containing rubber or synthetic resin member of the present invention is a rubber or synthetic resin selected from the group of polyolefin-based rubber or synthetic resin having basically the same chemical structure such as polyethylene, polypropylene, polybutylene, polymethylpentene, etc. , Paraffinic hydrocarbon oil such as poly α-olefin oil, naphthenic hydrocarbon oil, mineral oil, ether oil such as dialkyldiphenyl ether oil, ester oil such as phthalate ester, trimellitic acid ester, etc. After mixing and heating and melting any of them, it is injected into a predetermined mold and solidified by cooling while being pressed, and is pre-oxidized, anti-rust, anti-wear, anti-foam, extreme pressure agent What added various additives, such as, may be sufficient.
[0017]
The composition ratio of the above-mentioned lubricant-containing rubber or synthetic resin member is 20 to 90% by weight of polyolefin-based rubber or synthetic resin and 80 to 10% by weight of lubricant with respect to the total weight. When the polyolefin rubber or synthetic resin is less than 20% by weight, the hardness and strength necessary for a seal cannot be obtained. When the polyolefin rubber or synthetic resin exceeds 90% by weight (when the lubricant is less than 10% by weight), the supply of the lubricant is reduced, resulting in poor lubrication of the linear guide device itself.
[0018]
The above rubber or synthetic resin group has the same basic structure but different average molecular weights, ranging from 1 × 10 ^{3 to} 5 × 10 ⁶ . Among them, those having a relatively low molecular weight of 1 × 10 ³ to 1 × 10 ⁶ and an ultrahigh molecular weight of 1 × 10 ^{6 to} 5 × 10 ⁶ are mixed singly or as necessary. Use.
[0019]
In order to improve the mechanical strength of the lubricant-containing rubber or synthetic resin member of the present invention, the following thermoplastic resin and thermosetting resin may be added to the polyolefin rubber or synthetic resin described above. .
[0020]
As the thermoplastic resin, resins such as polyamide, polycarbonate, polybutylene terephthalate, polyphenylene sulfide, polyethersulfone, polyetheretherketone, polyamideimide, polystyrene, and ABS resin can be used.
[0021]
As the thermosetting resin, each resin such as unsaturated polyester resin, urea resin, melamine resin, phenol resin, polyimide resin, and epoxy resin can be used.
[0022]
These resins may be used alone or in combination.
Furthermore, in order to disperse the polyolefin rubber or synthetic resin and other resins in a more uniform state, an appropriate compatibilizing agent may be added as necessary.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same thru | or an equivalent part, and the overlapping description is abbreviate | omitted.
[0024]
First, as an embodiment of the linear motion guide bearing device of the present invention, the entire structure of a linear guide device that is a rolling linear motion guide bearing device will be described.
1 and 2, a slider 2 having a substantially U-shaped cross section as a guided member is straddled on a rectangular guide rail 1 as a guide shaft so as to be relatively movable in the axial direction. End caps 2B are detachably fixed to both end portions of the main body 2A of the slider 2 in the axial direction. In the case of this embodiment, two rolling element rolling grooves 3 each consisting of an axially concave groove having a substantially semicircular cross section are formed on both side surfaces 1 b of the guide rail 1.
[0025]
On the other hand, a load rolling element rolling groove 5 having a substantially semicircular cross section facing the rolling element rolling groove 3 of the guide rail 1 is formed on the inner surface of both sleeve portions 4 of the main body 2A of the slider 2. . Reference numeral 10 denotes a screw hole into which a screw for attaching the end cap 2B is screwed.
[0026]
Further, a rolling element return path 11 formed of a through hole having a circular cross section in the axial direction parallel to the load rolling element rolling groove 5 is formed in two upper and lower stages in the thick part of the sleeve portion 4 of the slider body 2A.
[0027]
The end cap 2B is an injection-molded product of a synthetic resin material, and has a substantially U-shaped cross section. Then, as shown in FIG. 3, the semicircular recess 12 is formed in the upper and lower two stages on both sleeve portions on the joint surface (back surface) 2B _b with the slider body 2A, and each semicircular recess A semi-cylindrical concave groove 13 is provided across the center of 12. A semi-cylindrical return guide 14 shown in FIGS. 4 and 5 is fitted into the semi-cylindrical concave groove 13. On the outer diameter surface of the return guide 14, a concave groove 15 having an arcuate cross section serving as a guide surface for the rolling element B is formed in two stages, upper and lower, at a position corresponding to the semicircular concave portion 12. A recess on the inner diameter side of the return guide 14 is a lubricant passage 17, and a through hole extending from the lubricant passage 17 to the concave groove 15 on the outer diameter side is formed as an oil supply hole 14 </ b> A.
[0028]
The return guide 14 of this embodiment is an injection molded product of a synthetic resin material.
By incorporating such a return guide 14 into the semicircular recess 12 on the back surface of the end cap, a semi-doughnut-shaped curved path 19 having a circular cross section is formed in two steps on the back surface 2B _b of the end cap 2B. The end cap 2B is attached to the slider body 2A, and the load rolling element rolling groove 5 and the rolling element return path 11 of the slider body 2A are similarly communicated with each other in the upper and lower stages through the curved path 19 as shown in FIG.
[0029]
The rolling element return path 11 and the curved paths 19 and 19 at both ends thereof constitute a rolling element circulation path, and a large number of rolling elements B are inserted into the path and the load rolling element rolling groove 5 in a freely rolling manner. ing.
[0030]
Then, the oil supply structure of said linear guide apparatus is described.
To explain the details of the oil supply path End cap 2B, the surface 2B _a of the end cap 2B, the center of the connecting portion connecting the left and right sleeves, oil supply hole 21 for grease or oil supply is provided with the back surface 2B penetrates _b . An internal thread 8 as an oil supply joint is formed on the inlet side of the oil supply hole 21. Conventionally, a grease nipple or an oil supply pipe joint is screwed onto the oil screw hole.
On the back surface 2B _b of the end cap 2B, there is formed an oil supply passage 22 for communicating the oil supply hole 21 with a semi-cylindrical groove 13 for attaching a return guide formed on both sleeve portions. The oil supply path 22 passes from the lubricant passage 17 on the inner diameter side of the return guide 14 assembled in the semi-cylindrical groove 13 to the groove 15 on the outer diameter side through the oil supply hole 14A, and the left and right sleeves It communicates with each curved path 19 in two upper and lower stages (see FIGS. 3 and 5).
[0031]
In the present type condition, as shown in FIGS. 1 and 7, the lubricant supply member receiving hole 26 communicating with the oil supply passage 22 through the oil supply hole 21 formed from a through hole provided in the slider main body 2A is fueling The same diameter as that of the hole 21 is provided. This lubricant supply member housing hole 26, insert the lubricant supply member 23 made of a circular pillar-shaped lubricant-containing rubber or synthetic resin, which refueling elastic member 24 such as a press for example a coil spring holes 21 insert within, and a set screw 25 to secure screwed into the internal thread 8 from the further surface 2B _a side.
[0032]
The composition of the lubricant supply member 23 is, for example, 75 wt% paraffinic mineral oil (FBKRO100 manufactured by Nippon Oil Co., Ltd.), 16 wt% low molecular weight polyethylene (PZ50U manufactured by Mitsubishi Oil Chemical Co., Ltd.), ultra high molecular weight polyethylene (Mitsui Petrochemical) (Miperon XM220) is set to 9 wt%.
[0033]
Next, the operation of the first embodiment will be described.
When the slider 2 moves on the guide rail 1 fixed to the machine base, the rolling element B moves in the moving direction of the slider 2 at a speed slower than that of the slider 2 while rolling in the load rolling element rolling path 5, and on one end side. The U-turn on the curved path 19 is moved while rolling in the reverse direction in the rolling element return path 11, and the reverse U-turn is made in the curved path 19 on the other end side to return to the load rolling element rolling path 5. repeat.
[0034]
When the linear guide device is driven in this way, the lubricant that gradually oozes out with time due to the temperature rise from the lubricant supply member 23 at room temperature or due to the heat generated during travel of the slider 2 passes through the oil supply path 22 and the return guide 14. To the lubricant passage 17, and then flows out into the curved path 19 through the oil supply hole 14 </ b> A of the return guide, and is automatically supplied to the rolling element B that passes while rolling there. Furthermore, the lubricant spreads through the rolling element B that circulates and moves to the rolling element rolling path 5 and the rolling element rolling groove 3 of the guide rail. In the present embodiment, since the lubricant supply member 23 is pressed by the elastic member 24, the lubricant is easily oozed out. As the lubricant is gradually released from the lubricant supply member 23, the lubricant supply member 23 gradually contracts. However, the elastic member 24 can be pressed out more smoothly and continuously.
[0035]
Therefore, even if the lubricant is not supplied to the slider 2 from the outside, the operation of the smooth linear guide device with a low torque can be continued for a long time. According to this embodiment, even when the linear guide device is used in a high temperature environment, the lubricant contained in the lubricant supply member 23 does not flow and flows out to the outside at an early stage. There is no need to repeat supply in a short time. Further, even when used in an environment with a large amount of foreign matter, the lubricant contained in the lubricant supply member 23 is not absorbed by the foreign matter, so there is no risk of poor lubrication. Further, since it is not necessary to replenish the lubricant from the outside of the linear guide device for a long time, lubrication is easy even when the linear guide device is installed inside the mechanical device. In addition, an oil supply pump and piping are not required as in the prior art, and the cost is low.
[0036]
Further, in this embodiment, a slider on the end surface of the main body 2A, an end in correspondence with the oil supply hole 21 of the cap 2B, the oil supply hole 21 and that have a predetermined depth in the coaxial same diameter or lubricants supply member housing hole 26 Is provided . As a result, as shown in FIG. 8, as compared with the example in which the lubricant supply member 23 is accommodated only in the oil supply hole 21, the lubricant is supplied to the rolling elements B and the rolling element rolling grooves 3 of the linear guide device for a longer time. And there exists an advantage that it can continue supplying to the load rolling-element rolling path 5. FIG .
[0037]
Next, another embodiment of the present invention is shown in FIG.
Implementation form of this, the length of the lubricant supplying member receiving hole 26 in the embodiment shown in FIG. 7 (depth) the longer is and those larger inner diameter. A lubricant supply member 23B having a larger length and diameter size is inserted into the lubricant supply member housing hole 26 and covered with a spacer 28. Thereafter, after the end cap 2B is assembled, the elastic member 24 and the set screw 25 are inserted into the oil supply hole 21, and the lubricant supply member 23 is pressed and fixed through the spacer 28 in the same manner as described above.
[0038]
The amount of the contained lubricant increases as the lubricant supply member 23 is enlarged, and the lubricant is supplied to the rolling element B, the rolling element rolling groove 3 and the load rolling element rolling path 5 of the linear guide device for a longer time. There is an advantage that you can continue. Other functions and effects are the same as in the example of FIG.
[0039]
Next, another embodiment of the present invention is shown in FIG.
Implementation form of this is to further extend the lubricant supply member receiving hole 26 in the embodiment of FIG. 9 is penetrated at the opposite end side of the slider body 2A, substantially spans the entire length the length of the lubricant supply of the through hole After inserting the member 23, the elastic member 24 and the set screw 25 are inserted and fixed to the oil supply holes 21 of the end cap 2B assembled to both ends of the slider body 2A, respectively. A spacer 28 is used as necessary.
[0040]
The amount of lubricant contained in the lubricant supply member 23 is further increased, and automatic lubrication for a longer time becomes possible. Other functions and effects are the same as those of the embodiment shown in FIG .
[0048]
In addition, the rolling linear motion guide bearing device to which the present invention can be applied is not limited to the type of the embodiment example. For example, the linear guide device may have a load rolling element rolling groove other than two on one side, and the rolling element is a ball. There may be no time.
[0049]
Subsequently, another embodiment of the present invention shown in FIG. 1. 1 to FIG. 1 3.
Implementation form of this is applied to a linear guide apparatus slip rather than a linear guide rolling lubricant supply device of the present invention.
[0050]
That is, the sliding guide shaft 50 includes a sliding guide surface 51 on the upper surface and guide slopes 52 on both side surfaces. On the sliding guide shaft 50, a guided member 53 having a substantially U-shaped cross section is straddled so as to be capable of relative sliding movement in the axial direction. In the upper part of the guided member 53, a long lubricant supply member accommodation hole 54 in the axial direction is provided at the center position in the width direction. An oil supply passage 55 communicating with the sliding guide surface 51 on the upper surface of the sliding guide shaft 50 is branched and formed in the lubricant supply member accommodation hole 54. A lubricant supply member 23 made of a cylindrical lubricant-containing rubber or synthetic resin and an elastic member 24 such as a coil spring that presses the lubricant supply member are inserted into the lubricant supply member housing hole 54, and the set screw 25 is inserted into the female screw. 8 is fixed by screwing.
[0051]
The lubricant Y that oozes out from the lubricant supply member 23 flows down the oil supply passage 55, reaches the sliding guide surface 51 on the upper surface of the sliding guide shaft 50, and lubricates.
Also in this case, in order to increase the lubricant supply member 23 and increase the amount of lubricant retained, the diameter of the lubricant supply member storage hole 54 for storing the lubricant supply member 23 is increased, or the length thereof is increased. it can be.
[0052]
【The invention's effect】
As described above, according to the first aspect of the present invention, the guided member guided by the guide shaft and linearly moves communicates with the internal rolling element circulation path and / or the load rolling element rolling groove. A storage hole that communicates with the oil supply passage and extends in the axial direction is provided in a connecting portion that connects both sleeves, and a lubricant supply member made of a lubricant-containing rubber or synthetic resin is inserted into the storage hole. Since it is a dynamic guide bearing, the lubricant gradually oozes out over time from the lubricant supply member and is automatically supplied to the rolling element surface, and the rolling element rolls evenly across the rolling element rolling path. As a result, there is an effect that stable self-lubrication is performed over a long period of time.
[0053]
More specifically, even if the lubricant is not supplied to the guided member from the outside, a stable and smooth operation can be continued at a low torque for a long time, and the linear guide bearing device can be used in a high temperature environment. Even in such a case, the lubricant contained in the lubricant supply member does not flow and flow out to the outside at an early stage, so there is no need to repeat replenishment in a short period of time, Even in use, the lubricant contained in the lubricant supply member will not absorb oil due to foreign matter, so there is no risk of poor lubrication. Lubrication is not required, so lubrication is easy even when a linear motion guide bearing device is installed inside the machine, and an oil supply pump and piping are not required as in the conventional case, and the cost is low. Etc., various effects It is obtained.
[0054]
According to the invention of claim 2 of the present invention, the present invention is applied to a sliding linear motion guide bearing having a sliding guide surface on the outer surface and having a guided member assembled to a guide shaft extending in the axial direction. A receiving hole that communicates with an oil supply passage that communicates with the sliding guide surface in the guided member and that extends in the axial direction is provided in a connecting portion that connects both sleeve portions, and a lubricant that includes a lubricant-containing rubber or synthetic resin in the receiving hole. Since the linear motion guide bearing with the lubricant supply device into which the supply member is inserted is provided, the same self-lubricating function effect as in the case of claim 1 can be obtained.
[0055]
According to the invention of claims 1 and 2 of the present invention, since the Jun lubricant supplying member was assumed to repression by the elastic member, is supplied to the lubricant GaJun Sawa contained in the lubricant supplying member, There is an effect that most of the content can be used without waste.
[Brief description of the drawings]
FIG. 1 is a front view of a linear guide device which is a linear motion guide bearing device of the present invention.
2 is an exploded perspective view of a slider that is a guided member of the linear guide device of FIG. 1;
3 is a perspective view of the back surface side of the end cap of the linear guide device of FIG. 1. FIG.
FIG. 4 is a front view of a return guide of the linear guide device of FIG.
5 is a perspective view of the back side of an end cap of the linear guide device of FIG. 1. FIG.
6 is a cross-sectional view taken along the line VI-VI in FIG.
FIG. 7 is a cross-sectional view of an essential part of an embodiment of the lubricant supply device of the present invention.
8 is a fragmentary cross-sectional view of another example of Jun lubricant supply device.
FIG. 9 is a cross-sectional view of an essential part of another embodiment of the lubricant supply device of the present invention.
FIG. 10 is a cross-sectional view of an essential part of another embodiment of the lubricant supply device of the present invention.
FIG. 11 is a perspective view of an embodiment in which the lubricant supply device of the present invention is applied to a sliding linear motion guide bearing device .
12 is a front view of the sliding linear motion guide bearing device of FIG. 11. FIG.
13 is a side view of the sliding linear motion guide bearing device of FIG . 12 with a part cut away .
FIG. 14 is a perspective view of a linear guide device which is a conventional linear motion guide bearing device .
15 is a rear perspective view of the slider shown in FIG . 14. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Guide shaft 2 Guided member 3 Rolling body rolling groove 5 Load rolling body rolling groove 11 Rolling body circulation path (rolling body return path)
19 Rolling body circulation path (curved path)
21 supply hole 23 lubricant supplying member 24 elastic member 26 or lubricants supply member housing hole B the rolling elements 50 the guide shaft (sliding guide shaft)
51 slideways 53 guided member 54 or lubricants supply member housing hole

Claims (2)

A guided member is assembled to a guide shaft that has a rolling element rolling groove on the outer surface and extends in the axial direction, and the guided member includes a loaded rolling element rolling groove facing the rolling element rolling groove and the rolling member rolling groove. load rolling element rolling groove comprises a rolling element circulation path which communicates with the Rutotomoni, and a right and left sleeves and the connecting portion connecting the two sleeves, a number of the loaded rolling member rolling groove and the rolling element circulation path In the linear motion guide bearing device in which the rolling elements are loaded so as to be freely rollable,
The guided member has an oil supply path that communicates with the rolling element circulation path and / or the load rolling element rolling groove, and has a storage hole that extends in the axial direction and communicates with the oil supply path. A linear motion guide with a lubricant supply device, characterized in that a lubricant supply member made of a rubber or synthetic resin containing a lubricant is inserted into the housing hole , and the lubricant supply member is in an elastic state by an elastic member. Bearing device. In a linear motion guide bearing device comprising a guided member having a sliding guide surface on an outer surface and extending in the axial direction, the guided member having left and right sleeve portions and a connecting portion connecting both sleeve portions . ,
The guided member, which has an oil supply path communicating with the slideway has a storage hole extending axially through the fuel supply passage and communicating with the connecting portion, to the storage hole, rubber lubricants containing Alternatively, a linear motion guide bearing device with a lubricant supply device , wherein a lubricant supply member made of a synthetic resin is inserted and the lubricant supply member is in an elastic state by an elastic member .

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