CN112431857B - Linear bearing applicable to square tube - Google Patents

Linear bearing applicable to square tube Download PDF

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Publication number
CN112431857B
CN112431857B CN202011084295.7A CN202011084295A CN112431857B CN 112431857 B CN112431857 B CN 112431857B CN 202011084295 A CN202011084295 A CN 202011084295A CN 112431857 B CN112431857 B CN 112431857B
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China
Prior art keywords
frame body
limiting
ring
inner ring
rolling
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CN202011084295.7A
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CN112431857A (en
Inventor
王民豪
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Ningbo Meiyate Precision Transfers Component Co ltd
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Ningbo Meiyate Precision Transfers Component Co ltd
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Publication of CN112431857A publication Critical patent/CN112431857A/en
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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
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/007—Hybrid linear bearings, i.e. including more than one bearing type, e.g. sliding contact bearings as well as rolling contact bearings
    • 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
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0602—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
    • 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
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0602—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
    • F16C29/0611—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the return passages, i.e. the passages where the rolling elements do not carry load
    • 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
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/068—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with the bearing body fully encircling the guide rail or track
    • F16C29/0692—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with the bearing body fully encircling the guide rail or track the bearing body encircles a guide rail or track of non-circular cross-section, e.g. with grooves or protrusions, i.e. the linear bearing is suited to transmit torque
    • F16C29/0695—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with the bearing body fully encircling the guide rail or track the bearing body encircles a guide rail or track of non-circular cross-section, e.g. with grooves or protrusions, i.e. the linear bearing is suited to transmit torque with balls
    • F16C29/0697—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with the bearing body fully encircling the guide rail or track the bearing body encircles a guide rail or track of non-circular cross-section, e.g. with grooves or protrusions, i.e. the linear bearing is suited to transmit torque with balls with polygonal guide rail or track
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/3837—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bearings For Parts Moving Linearly (AREA)

Abstract

The invention relates to the field of bearings and discloses a linear bearing applicable to a square tube, which comprises a bearing outer sleeve, a retainer I and a plurality of rolling bodies I, wherein the retainer I is provided with a plurality of spaced circulating raceways, the rolling bodies I are connected in the circulating raceways in a rolling manner, the first retainer comprises a first frame body and a second frame body sleeved outside the first frame body, the circulating roller path comprises a first roller path arranged on the first frame body and a second roller path arranged on the second frame body, the first frame body is provided with a sliding hole which is used for sleeving a square pipe along the axis direction, the first roller path is communicated with the sliding hole of the first frame body to form a first split groove, the second roller path is communicated with the outer side of the second frame body to form a second split groove, the first split groove and the second split groove are both arranged along the axis direction of the bearing outer sleeve and have widths smaller than the diameter of the first rolling body, the first rolling body in the first split groove is abutted against the square pipe, and the first rolling body in the second split groove is abutted against the inner wall of the bearing outer sleeve.

Description

Linear bearing applicable to square tube
Technical Field
The invention relates to the field of bearings, in particular to a linear bearing applicable to a square tube.
Background
The linear bearing on the market at present comprises a bearing outer sleeve, a retainer positioned in the bearing outer sleeve and a rolling body positioned in the retainer, the retainers on the market are all annular and used for penetrating a cylindrical guide rail, the linear bearing used for penetrating a square tube is not designed on the market at present, the square tube is frequently applied in different fields, and the linear bearing of the annular retainer on the market at present cannot be suitable for the square tube.
Disclosure of Invention
The invention provides a linear bearing applicable to a square tube, aiming at the defect that the conventional common linear bearing on the market cannot be applicable to the square tube.
In order to solve the technical problems, the invention is solved by the following technical scheme: a linear bearing suitable for a square tube comprises a bearing outer sleeve, a retainer I and a plurality of rolling bodies I, wherein the retainer I is provided with a plurality of spaced circulating raceways, the rolling bodies I are connected in the circulating raceways in a rolling manner, the first retainer comprises a first frame body and a second frame body sleeved outside the first frame body, the circulating roller path comprises a first roller path arranged on the first frame body and a second roller path arranged on the second frame body, the first frame body is provided with a sliding hole which is used for sleeving a square pipe along the axis direction, the first roller path is communicated with the sliding hole of the first frame body to form a first split groove, the second roller path is communicated with the outer side of the second frame body to form a second split groove, the first split groove and the second split groove are both arranged along the axis direction of the bearing outer sleeve and have widths smaller than the diameter of the first rolling body, the first rolling body in the first split groove is abutted against the square pipe, and the first rolling body in the second split groove is abutted against the inner wall of the bearing outer sleeve.
Adopt above-mentioned scheme, first holder includes first support body and second support body, the first and the second both sides face inside and outside that is located first holder of crack groove respectively, a plurality of rolling elements of circulation raceway are one, a plurality of rolling elements are one to carry out the butt through crack groove and square pipe, a plurality of rolling elements are one to pass through crack groove two and bearing housing inner circle butt, first holder has the benefit that two parts are constituteed to reduce the processing degree of difficulty, the rolling element of being convenient for is put into first holder, still can guarantee that the rolling element moves smoothly in circulation raceway, make first holder can be at bearing housing internal circumferential direction, thereby can follow bearing housing axis direction and remove when square pipe circumferential direction, first holder can be along with square pipe circumferential direction, and the bearing housing can remain stationary in linear bearing's mounting hole.
Preferably, the sliding hole is in a square hole shape, and each side surface of the sliding hole is provided with a first crack groove.
By adopting the scheme, the advantage that the first split groove is formed in each side face of the sliding hole is that the stress is more uniform.
Preferably, the second frame bodies are in a multi-piece annular array shape, the number of the second frame bodies is consistent with the number of the edges of the sliding holes, each second frame body is provided with a second split groove, and the first split grooves are respectively opposite to the second split grooves.
By adopting the scheme, the first cracking grooves and the second cracking grooves are consistent in number, so that the installation is more convenient.
Preferably, the first support body is provided with a first limiting strip in an upward protruding mode, the first limiting strip and the first rolling way are in a track shape, the second support body is provided with a second limiting strip in an upward protruding mode, the second limiting strip and the second rolling way form a track shape, the first limiting strip is connected with the second rolling way in a clamping mode, the second limiting strip is connected with the first rolling way in a clamping mode, and the first limiting strip and the second limiting strip are provided with bead returning grooves.
By adopting the scheme, the first limiting strip and the second limiting strip have the effects of reducing the processing difficulty, facilitating the one-step molding during injection molding, and realizing certain fixing effect by clamping the first limiting strip in the second raceway and clamping the second limiting strip in the first raceway.
Preferably, a first limiting inner ring is convexly arranged at one end of the first frame body, a second limiting inner ring is arranged at one end, far away from the first limiting inner ring, of the second frame body, the central axes of the first limiting inner ring and the second limiting inner ring coincide with the central axis of the bearing outer sleeve, a second rolling body is arranged between the first limiting inner ring and the bearing outer sleeve, and a second rolling body is arranged between the second limiting inner ring and the bearing outer sleeve.
By adopting the scheme, the two rolling bodies are respectively provided with one group at two ends of the linear bearing, and the second rolling body has the function that when the first rolling body is abutted against the bearing outer sleeve and the first retainer rotates circumferentially relative to the bearing outer sleeve, the second rolling body can bear the pressure of the first rolling body, so that the service life of the linear bearing is prolonged.
Preferably, an annular abutting ring I is arranged between the first frame body and the limiting inner ring I, and the rolling bodies II and the second frame body are respectively abutted against two sides of the abutting ring I.
By adopting the scheme, the first abutting ring has the functions of limiting the axial movement of the second rolling body and limiting the positioning of one end of the second frame body.
Preferably, an annular abutting ring II is arranged between the second frame body and the limiting inner ring II, and the rolling body II and the first frame body are respectively abutted against two sides of the abutting ring II.
By adopting the scheme, the second abutting ring has the functions of limiting the axial movement of the second rolling body and limiting the positioning of one end of the first frame body, and the first abutting ring and the second abutting ring form the mutual positioning function.
Preferably, one end of the bearing outer sleeve is provided with a first annular limiting ring, the first limiting inner ring is abutted against the first limiting ring, the other end of the bearing outer sleeve is clamped with a second annular limiting ring, and the second limiting inner ring is abutted against the second limiting ring.
By adopting the scheme, the first limiting ring and the second limiting ring have the function of limiting the axis of the second rolling body to be limited.
Preferably, the first limiting inner ring and the second limiting inner ring are both clamped with sealing rings, and the sealing rings are annular, and inner holes of the sealing rings are square holes.
By adopting the scheme, the sealing ring has a sealing effect, when the square pipe is positioned in the sliding hole of the linear bearing, the sealing ring is abutted against the square pipe, and dust or impurities can be prevented from entering the sliding hole.
Preferably, the corners of the sliding holes are provided with avoidance grooves.
Adopt above-mentioned scheme, the effect of dodging the groove lies in increasing machining error, prevents to mould plastics after accomplishing, and it has the error in the department of arriving of sliding hole, leads to the unable problem of installing of square pipe.
Due to the adoption of the technical scheme, the invention has the remarkable technical effects that: the first retainer comprises a first retainer body and a second retainer body, a first crack groove and a second crack groove are respectively arranged on the inner side surface and the outer side surface of the first retainer, a plurality of rolling bodies I in a circulating raceway are abutted with a square pipe through the first crack groove, and a plurality of rolling bodies I are abutted with an inner ring of a bearing outer sleeve through the second crack groove, the first retainer has two parts, and the first retainer has the advantages of reducing the processing difficulty, facilitating the rolling bodies to be placed in the first retainer, ensuring the rolling bodies to smoothly move in the circulating raceway, enabling the first retainer to circumferentially rotate in the bearing outer sleeve, enabling the square pipe to move along the axis direction of the bearing outer sleeve, enabling the first retainer to circumferentially rotate along with the square pipe when the square pipe circumferentially rotates, enabling the bearing outer sleeve to be fixedly kept in a mounting hole of a linear bearing, and enabling a first limit strip and a second limit strip to have the effects of reducing the processing difficulty and facilitating one-step molding during injection molding, the first limiting strip is clamped in the second rolling path, the second limiting strip is clamped in the first rolling path to play a certain fixing role, and the pressure of the pair of bearing sleeves of the rolling body can be reduced under the action of the second rolling body, so that the service life of the bearing is prolonged.
Drawings
FIG. 1 is a schematic view of an overall structure of a linear bearing applicable to a square tube;
FIG. 2 is an exploded view of a linear bearing assembly for square tubes;
FIG. 3 is a sectional view of a linear bearing for a square tube in the axial direction;
FIG. 4 is a sectional view of a linear bearing for a square tube in a top view;
fig. 5 is a structural schematic view of a single second frame body.
The names of the parts designated by the numerical references in the above figures are as follows: 1. a bearing housing; 2. a first retainer; 3. a first rolling body; 4. a circulating raceway; 5. a first frame body; 6. a second frame body; 7. a sliding hole; 8. a first raceway; 9. a second raceway; 10. cracking the first groove; 12. cracking a second groove; 13. a first limiting strip; 14. a second limiting strip; 15. a bead returning groove; 16. a first butting ring; 17. a first limiting inner ring; 18. a second butting ring; 19. a second limiting inner ring; 20. a second retainer; 21. a second rolling body; 22. a seal ring; 23. an avoidance groove; 24. a first limiting ring; 25. and a second limiting ring.
Detailed Description
The invention is described in further detail below with reference to the figures and examples.
The embodiment is as follows:
a linear bearing suitable for a square tube is disclosed, firstly, referring to figures 1 to 4, comprising a bearing outer sleeve 1, a first retainer 2 and a plurality of first rolling elements 3 positioned in the first retainer 2, wherein the first retainer 2 is provided with a plurality of circulating raceways 4 arranged at intervals, the first rolling elements 3 are spherical, the plurality of first rolling elements 3 are connected in the circulating raceways 4 in a rolling manner, the first retainer 2 comprises a first frame body 5 and a second frame body 6 sleeved outside the first frame body 5, the first frame body 5 comprises a roller path I8 arranged on the first frame body 5 and a roller path II 9 arranged on the second frame body 6, the outer side surface of the first frame body 5 is also square, the four outer side surfaces of the first frame body 5 are respectively provided with a roller path I8, the first raceway 8 is communicated with a sliding hole 7 of the first frame body 5 to form a first split groove 10, four side surfaces of the sliding hole 7 are respectively provided with a first split groove 10, the number of the second frame body 6 and the number of the sliding groove holes are the same, four second frame bodies 6 are respectively attached to four outer side surfaces of the first frame body 5, in combination with the figure 5, one second raceway 9 is arranged on one side, facing the first frame body 5, of each second frame body 6, the first raceway 8 and the second raceway 9 form an annular runway shape, a circulating raceway 4 formed by the first raceway 8 and the second raceway 9 is inclined relative to the outer side surface of the first frame body 5, the first raceway 8 is communicated with one side, far away from the first frame body 5, of each second frame body 6 to form a second split groove 12, the first split grooves 10 and the second split grooves 12 are arranged along the axial direction of the first retainer 2, the widths of the first split grooves 10 and the second split grooves 12 are equal, and are smaller than the diameters of the first rolling bodies 3, part of the rolling element 3 can extend out of a first split groove 10 or a second split groove 12, the rolling element 3 in the first split groove 10 is abutted against a square tube, the rolling element 3 in the second split groove 12 is abutted against the inner wall of the bearing housing 1, a first limiting strip 13 is convexly arranged on each outer side surface of the first frame body 5 facing the second frame body 6, the first limiting strips 13 and the first rolling way 8 are in a runway shape, the first rolling way 8 is concave relative to the first frame body 5, the first limiting strips 13 are convex relative to the first frame body 5, a second limiting strip 14 is convexly arranged on one side of each second frame body 6 facing the first frame body 5, the second limiting strips 14 and the second rolling ways 9 are in a runway shape, the second rolling ways 9 is concave relative to the second frame body 6, the second limiting strips 14 are convex relative to the second frame body 6, the first limiting strips 13 are clamped in the second rolling ways 9, the second limiting strips 14 are clamped in the first rolling ways 8, a ball returning groove 15 is formed in one side, away from the first frame body 13, the second limiting strip 14 is also provided with a bead returning groove 15 at one side far away from the second frame body 6, and the bead returning groove 15 is in a semicircular groove shape.
One end of the first frame body 5 is convexly provided with a first abutting ring 16 and a first limiting inner ring 17 positioned at one side of the first abutting ring 16, which is far away from the first frame body 5, one end of the second frame body 6, which is far away from the first limiting inner ring 17, is convexly provided with a second abutting ring 18 and a second limiting inner ring 19 positioned at one side of the second abutting ring 18, which is far away from the second frame body 6, the first limiting inner ring 17 is annular, the central axis of the first limiting inner ring 17 is superposed with the central axis of the bearing outer sleeve 1, the second limiting inner ring 19 formed by four second frame bodies 6 is annular, the annular central axis of the second limiting inner ring 19 is superposed with the central axis of the bearing outer sleeve 1, a second retainer 20 is arranged between the first limiting inner ring 17 and the bearing outer sleeve 1, two retainers 20 are arranged between the second limiting inner ring 19 and the bearing outer sleeve 1, two rolling bodies 21 are arranged in the two retainer second 20, the second rolling bodies 21 in the embodiment are cylindrical, and the side surfaces of the second rolling bodies 21 positioned at the first limiting inner ring are respectively abutted against the inner side surfaces of the bearing outer sleeve 1 and the first limiting inner ring 17, the side surface of a rolling body II 21 positioned on a limiting inner ring II 19 is respectively abutted against the inner side of a bearing outer sleeve 1 and the side surface of the limiting inner ring II 19, the outer diameter of a resisting ring is larger than the outer diameter of a first frame body 5, one side of the resisting ring I16 facing the first frame body 5 is abutted against all second frame bodies 6, one side of the resisting ring I16 away from the first frame body 5 is abutted against a retainer II 20, one side of the resisting ring II 18 facing the second frame body 6 is abutted against the first frame body 5, one side of the resisting ring II 18 away from the second frame body 6 is abutted against the retainer II 20, one end of the bearing outer sleeve 1 is provided with an annular limiting ring I24, the limiting ring I24 is integrally formed with the bearing outer sleeve 1, the inner diameter of the limiting ring I24 is smaller than that of the bearing outer sleeve 1, one end of the limiting inner ring I17 away from the first frame body 5 is abutted against the limiting ring I24, the inner wall of the bearing outer sleeve 1, which is not provided with one end provided with the limiting ring I24, a ring I25 is clamped in the annular limiting ring II 25, the second limiting ring 19 and the second limiting ring 25 are abutted, the first limiting inner ring 17 and the second limiting inner ring 19 are clamped with a sealing ring 22 towards one side of the sliding hole 7, and the sealing ring 22 is annular and has a square inner hole. An avoiding groove 23 is arranged at the corner of the inner side surface of the sliding hole 7 connected with the inner side.

Claims (8)

1. A linear bearing suitable for a square tube comprises a bearing outer sleeve (1), a first retainer (2) and a plurality of first rolling bodies (3), wherein the first retainer (2) is provided with a plurality of spaced circulating raceways (4), the first rolling bodies (3) are connected in the circulating raceways (4) in a rolling manner, the linear bearing is characterized in that the first retainer (2) comprises a first frame body (5) and a second frame body (6) sleeved outside the first frame body (5), the circulating raceways (4) comprise first raceways (8) arranged on the first frame body (5) and second raceways (9) arranged on the second frame body (6), sliding holes (7) which are square and used for sleeving the square tube are formed in the first frame body (5) along the axial direction, the first raceways (8) are communicated with the sliding holes (7) of the first frame body (5) to form first split grooves (10), the second raceways (9) are communicated with the outer side of the second frame body (6) to form second split grooves (12), the first crack groove (10) and the second crack groove (12) are both arranged along the axis direction of the bearing outer sleeve (1) and the widths of the first crack groove (10) and the second crack groove (12) are smaller than the diameter of the first rolling element (3), the first rolling element (3) in the first crack groove (10) is abutted against a square tube, the first rolling element (3) in the second crack groove (12) is abutted against the inner wall of the bearing outer sleeve (1), a first limiting inner ring (17) is convexly arranged at one end of the first frame body (5), a second limiting inner ring (19) is arranged at one end, far away from the first limiting inner ring (17), of the second frame body (6), the central axis of the first limiting inner ring (17) and the central axis of the second limiting inner ring (19) are superposed with the central axis of the bearing outer sleeve (1), a second rolling element (21) is arranged between the first limiting inner ring (17) and the bearing outer sleeve (1), a second rolling element (21) is arranged between the second limiting inner ring (19) and the bearing outer sleeve (1), a first limiting strip (13) is convexly arranged on the first frame body (5), spacing one (13) and raceway one (8) are the runway form, and second support body (6) epirelief is equipped with spacing two (14), and spacing two (14) form the runway form with raceway two (9), and spacing one (13) joint is in raceway two (9), and spacing two (14) joint is in raceway one (8), has all seted up on spacing one (13) and spacing two (14) and has returned pearl groove (15).
2. The linear bearing suitable for the square tube according to claim 1, wherein the sliding hole (7) is square, and a first crack groove (10) is formed in each side surface of the sliding hole (7).
3. The linear bearing suitable for the square tubes as claimed in claim 2, wherein the second frame bodies (6) are in a multi-piece annular array, the number of the second frame bodies (6) is the same as the number of the edges of the sliding holes (7), each second frame body (6) is provided with a second split groove (12), and the first split grooves (10) are respectively opposite to the second split grooves (12).
4. The linear bearing suitable for the square tubes as claimed in claim 1, wherein an annular first support ring (16) is arranged between the first frame body (5) and the first limiting inner ring (17), and the second rolling body (21) and the second frame body (6) are respectively abutted against two sides of the first support ring (16).
5. The linear bearing suitable for the square tube according to claim 1, wherein a second annular abutting ring (18) is arranged between the second frame body (6) and the second limiting inner ring (19), and the rolling bodies (21) and the first frame body (5) are respectively abutted against two sides of the second abutting ring (18).
6. The linear bearing suitable for the square tube according to claim 1, wherein one end of the bearing outer sleeve (1) is provided with a first annular limiting ring (24), the first limiting inner ring (17) is abutted against the first limiting ring (24), the other end of the bearing outer sleeve (1) is clamped with a second annular limiting ring (25), and the second limiting inner ring (19) is abutted against the second limiting ring (25).
7. The linear bearing suitable for the square tubes as claimed in claim 1, wherein the first limiting inner ring (17) and the second limiting inner ring (19) are both clamped with a sealing ring (22), the sealing ring (22) is annular, and an inner hole of the sealing ring is square.
8. The linear bearing for the square tube according to claim 1, wherein the sliding hole (7) is provided with an avoiding groove (23) at a corner thereof.
CN202011084295.7A 2020-10-12 2020-10-12 Linear bearing applicable to square tube Active CN112431857B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011084295.7A CN112431857B (en) 2020-10-12 2020-10-12 Linear bearing applicable to square tube

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Application Number Priority Date Filing Date Title
CN202011084295.7A CN112431857B (en) 2020-10-12 2020-10-12 Linear bearing applicable to square tube

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CN112431857A CN112431857A (en) 2021-03-02
CN112431857B true CN112431857B (en) 2022-08-19

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB989955A (en) * 1960-10-15 1965-04-22 Erwin Schwarz Improvements in or relating to rectilinear-motion bearings
US4406502A (en) * 1981-08-06 1983-09-27 Hiroshi Teramachi Unlimited sliding ball bearing spline assembly
DE10025370A1 (en) * 2000-05-23 2001-11-29 Schaeffler Waelzlager Ohg Telescopic device for transmission of torque has means of bracing formed by running track rail for ball bearings located in space between shaft and sleeve and encompassing shaft
JP2002349563A (en) * 2001-05-24 2002-12-04 Isel Co Ltd Linear motion bearing and manufacturing method for roller retaining belt used for this
DE102010019529A1 (en) * 2010-05-06 2011-11-10 Schaeffler Technologies Gmbh & Co. Kg Bearing arrangement for rod for linear movement in direction of axis of rod and radial pivoting movement around axis, has inner cage that is provided with multiple balls, where balls interact with contour of rod and center sleeve
US10228020B1 (en) * 2017-11-22 2019-03-12 Gregory Lee Burns Linear bearing apparatus and method of use
CN109812499A (en) * 2019-01-31 2019-05-28 宁波恒力汽配轴承有限公司 A kind of dismountable linear bearing

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB989955A (en) * 1960-10-15 1965-04-22 Erwin Schwarz Improvements in or relating to rectilinear-motion bearings
DE1256489B (en) * 1960-10-15 1967-12-14 Emil Fichthorn Fa Rolling bearings for longitudinal guides
US4406502A (en) * 1981-08-06 1983-09-27 Hiroshi Teramachi Unlimited sliding ball bearing spline assembly
DE10025370A1 (en) * 2000-05-23 2001-11-29 Schaeffler Waelzlager Ohg Telescopic device for transmission of torque has means of bracing formed by running track rail for ball bearings located in space between shaft and sleeve and encompassing shaft
JP2002349563A (en) * 2001-05-24 2002-12-04 Isel Co Ltd Linear motion bearing and manufacturing method for roller retaining belt used for this
DE102010019529A1 (en) * 2010-05-06 2011-11-10 Schaeffler Technologies Gmbh & Co. Kg Bearing arrangement for rod for linear movement in direction of axis of rod and radial pivoting movement around axis, has inner cage that is provided with multiple balls, where balls interact with contour of rod and center sleeve
US10228020B1 (en) * 2017-11-22 2019-03-12 Gregory Lee Burns Linear bearing apparatus and method of use
CN109812499A (en) * 2019-01-31 2019-05-28 宁波恒力汽配轴承有限公司 A kind of dismountable linear bearing

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