Spherical roller bearing
By improving the axial circumferential jump and perpendicularity of the inner and outer rings of spherical roller bearings, as well as the radial clearance between the roller and the outer ring, the problem of uneven thickness in the copper foil manufacturing process is solved, and the thickness is significantly improved The operation accuracy of the bearing and the thickness uniformity of the copper foil.
Patent Information
- Application Number
- CN202421047453.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-14
AI Technical Summary
In the copper foil manufacturing process, especially when 3-6 μm thin copper foil is produced, there is often a problem of uneven thickness of the copper foil, which affects the quality of the copper foil.
By improving the axial circumferential jump and perpendicularity of the inner and outer rings of the spherical roller bearings, as well as the radial clearance between the roller and the outer ring, the bearing's operating accuracy is significantly improved, thereby reducing the radial jump of the cathode roller , improve the uniformity of the thickness of the copper foil.
The improved spherical roller bearing significantly improves the operating accuracy of the bearing, reduces the radial jump of the cathode roller, and thus improves the thickness uniformity of the copper foil, especially the 3-6μm thin copper foil.
Smart Images
Figure CN222479231U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a spherical roller bearing. Background Art
[0002] Various types of bearings are used in various equipment and systems. For example, spherical roller bearings are often used in equipment that manufactures copper foil. Figure 1 As shown, the device generally includes an electrolytic cell 2 powered by a power source 1, and a copper plate 3 is placed in the electrolytic cell 2 and serves as an anode of the electrolytic reaction, and a cathode roller 4 is placed above the copper plate 3 and serves as a cathode of the electrolytic reaction, with a certain gap 5 between the two. Furthermore, by supplying power to the electrolyte in the electrolytic cell, copper ions are deposited on the surface of the cathode roller 4, and as the cathode roller 4 rotates and cooperates with other stripping rollers, the copper foil 6 is stripped from the cathode roller 4 and collected.
[0003] In the copper foil manufacturing process, the problem of uneven copper foil thickness often occurs. Especially in the case of manufacturing 3-6μm thin copper foil, uneven thickness will be a serious copper foil quality problem.
[0004] Therefore, an improved technical solution is desired in the art to solve the problem of uneven thickness of copper foil, especially 3-6 μm thin copper foil. Utility Model Content
[0005] In response to the above-mentioned problems and needs, the present disclosure proposes a new technical solution, which solves the above-mentioned problems and brings other technical effects by adopting the following technical features.
[0006] The utility model provides a spherical roller bearing, comprising an inner ring, an outer ring, and a roller arranged between the inner ring and the outer ring, wherein the spherical roller bearing satisfies at least one of the following conditions:
[0007] a) In the circumferential direction, the first axial circumferential runout t of the first axial end face of the inner ring relative to the axis determined by the inner circumferential surface of the inner ring Sd1 is 2.647×10 -5 ×d±2μm, where d is the nominal inner diameter of the inner ring and the unit is mm;
[0008] b) in the circumferential direction, a first perpendicularity t of the inner ring of a first selected position on the inner circumferential surface at the first axial end of the inner ring relative to a second axial end surface of the inner ring Sdr1 is 4.412×10 -5 ×d±2μm, where d is the nominal inner diameter of the inner ring and the unit is mm;
[0009] c) in the circumferential direction, a first perpendicularity t of the outer ring of a first selected position on the outer circumferential surface of the outer ring at the first axial end relative to the second axial end surface of the outer ring SD11.25×10 -5 ×D±2μm, where D is the nominal outer diameter of the outer ring and the unit is mm;
[0010] d) The radial clearance C between the roller and the inner surface of the outer ring is:
[0011] 5.588×10 -4 ×d≤C≤7.941×10 -4 ×d, where d is the nominal inside diameter of the inner ring and the unit is mm.
[0012] Furthermore, the spherical roller bearing also satisfies at least one of the following conditions:
[0013] e) In the circumferential direction, the second axial circumferential runout t of the second axial end face of the inner ring relative to the axis determined by the inner circumferential surface of the inner ring Sd2 is 2.647×10 -5 ×d±2μm, where d is the nominal inner diameter of the inner ring and the unit is mm;
[0014] f) in the circumferential direction, a second perpendicularity t of the inner ring of a second selected position of the inner ring on the inner circumferential surface at the second axial end of the inner ring relative to the first axial end surface of the inner ring Sdr2 is 4.412×10 -5 ×d±2μm, where d is the nominal inner diameter of the inner ring and the unit is mm;
[0015] g) in the circumferential direction, a second perpendicularity t of the outer ring of a second selected position on the outer circumferential surface of the outer ring at the second axial end of the outer ring relative to the first axial end surface of the outer ring SD2 1.25×10 -5 ×D±2μm, where D is the nominal outer diameter of the outer ring and the unit is mm.
[0016] Preferably, in condition b), the first selected position of the inner ring is any position on the inner circumferential surface from the first axial end face of the inner ring to a distance of 0.05-0.15w from the first axial end face, wherein w is the axial width of the inner ring.
[0017] Preferably, in condition f), the second selected position of the inner ring is any position on the inner circumferential surface from the second axial end face of the inner ring to a distance of 0.05-0.15w from the second axial end face, wherein w is the axial width of the inner ring.
[0018] Preferably, in condition c), the first selected position of the outer ring is any position on the outer circumferential surface from the first axial end face of the outer ring to a distance of 0.05-0.15W from the first axial end face, wherein W is the axial width of the outer ring.
[0019] Preferably, in condition g), the second selected position of the outer ring is any position on the outer circumferential surface from the second axial end face of the outer ring to a distance of 0.05-0.15W from the second axial end face, wherein W is the axial width of the outer ring.
[0020] Preferably, the inner ring has a conical inner circumferential surface.
[0021] Preferably, the spherical roller bearing comprises two rows of rollers arranged between the inner ring and the outer ring, and there is no guide ring between the two rows of rollers.
[0022] Preferably, the opposite end surfaces of each roller in the two rows of rollers are formed as flat surfaces.
[0023] Preferably, the spherical roller bearing runs at a rotation speed of 5 to 40 rpm.
[0024] According to the utility model, the above-mentioned improvements are carried out on any one or any combination of the first and second axial circumferential runouts of the inner ring, the first and second perpendicularities of the inner ring, and the first and second perpendicularities of the outer ring, so as to achieve a significant improvement in the bearing running accuracy, and further improve the radial runout of the cathode roller and the thickness uniformity of the copper foil (especially 3-6μm thin copper foil). BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 A schematic diagram of a copper foil manufacturing device;
[0026] Figure 2 is a schematic diagram of a spherical roller bearing;
[0027] Figure 3 It is a schematic diagram of the first preferred embodiment of the utility model;
[0028] Figure 4 It is a schematic diagram of a second preferred embodiment of the utility model;
[0029] Figure 5 It is a schematic diagram of a third preferred embodiment of the utility model;
[0030] Figure 6a and Figure 6b is a schematic diagram of the contact between the roller and the guide ring when the guide ring is included;
[0031] Figure 7 It is a schematic diagram of a roller according to a preferred embodiment of the utility model. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solution and advantages of the technical solution of the present disclosure clearer, the technical solution of the embodiment of the present disclosure will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present disclosure. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.
[0033] Compared to the embodiments shown in the drawings, feasible implementations within the scope of the present disclosure may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.
[0034] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present disclosure belongs. The words "first", "second" and similar words used in the patent specification and claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. When the number of components is not specified, the number of components may be one or more; similarly, words such as "one", "the", "said" and the like do not necessarily indicate a quantity limitation. Words such as "include" or "comprise" and the like mean that the element or object appearing before the word includes the element or object listed after the word and its equivalent, without excluding other elements or objects. Words such as "install", "set", "connect" or "connected" and the like are not limited to physical or mechanical installation, setting, connection, but may include electrical installation, setting, connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate the relative position relationship when the device is in use or the position relationship shown in the drawings. When the absolute position of the described object changes, the relative position relationship may also change accordingly.
[0035] For ease of explanation, the direction of the rotation axis of the bearing is referred to as the axial direction, and the direction perpendicular to the axial direction is referred to as the radial direction. The term "inward" refers to the direction toward the inside of the bearing, whereas the term "outward" refers to the direction toward the outside of the bearing.
[0036] As mentioned above, when manufacturing copper foil, especially when manufacturing very thin copper foil (such as 3-6μm), the problem of uneven thickness often occurs. However, the causes of this problem are complex and varied, such as poor electrolysis process, poor cathode roller accuracy and size, poor cathode roller operation status, etc.
[0037] See again Figure 1 According to the inventors' research, an important factor affecting the thickness of copper foil is the gap 5 between the cathode roller 4 and the copper plate 3. If the gap 5 undergoes uncontrollable changes 7 during the copper foil manufacturing process, it will significantly affect the thickness of the copper foil 6. The gap change 7 is related to the radial runout 8 of the cathode roller 4. Therefore, if the radial runout 8 of the cathode roller can be improved, the thickness uniformity of the copper foil, especially the 3-6 μm thin copper foil, can be effectively improved.
[0038] The inventors have found that the radial runout 8 of the cathode roller 4 is also related to various factors. The cathode roller 4 is usually mounted on a shaft 9, which is supported by a spherical roller bearing 10. Therefore, if the running accuracy of the bearing 10 can be improved, the radial runout of the cathode roller 4 can be improved. The running accuracy of the bearing can be improved in many aspects, such as improving the installation accuracy of the bearing, improving the lubrication conditions of the bearing, etc.
[0039] In addition to the above-mentioned improvements, the utility model proposes to improve the axial circumferential runout / verticality of the inner ring / outer ring of the bearing supporting the cathode roller shaft, and / or improve the radial clearance between the roller and the outer ring, thereby reducing or even avoiding the radial runout of the cathode roller to improve the uniformity of the copper foil thickness.
[0040] The utility model can be used for various types of spherical roller bearings, for example, can be used for spherical roller bearings whose inner rings have conical inner peripheral surfaces.
[0041] Figure 2 The schematic diagram of the spherical roller bearing according to the present invention is shown, which comprises an inner ring 11, an outer ring 12 and rollers 13 arranged between the inner ring 11 and the outer ring 12. The spherical roller bearing comprises two rows of rollers 13, for example.
[0042] See also Figure 3 According to the first preferred embodiment of the utility model, the utility model proposes to improve the axial circumferential runout of the axial end face of the inner ring of the spherical roller bearing. By making a targeted design for the axial circumferential runout of the axial end face of the inner ring, the running accuracy of the bearing can be significantly improved, thereby improving the radial runout of the cathode roller and improving the uniformity of the copper foil thickness. Such targeted improvement does not exist in the prior art. The inner ring of the spherical roller bearing in the prior art only meets conventional technical standards (such as ISO standards), and these standards do not put forward design requirements for the axial circumferential runout of the axial end face of the inner ring.
[0043] Specifically, see Figure 3 In the circumferential direction, the first axial end face 111 of the inner ring 11 relative to the axis determined by the inner ring inner circumferential surface 110 (also referred to as the inner ring inner circumferential surface K) has a first axial circumferential runout t Sd1 is 2.647×10-5 ×d±2μm, where d is the nominal inner diameter of the inner ring and the unit is mm. Thus, for example, for a spherical roller bearing with an inner ring nominal inner diameter d of 340 mm, the first axial circumferential runout t Sd1 It is 7-11 μm, more preferably 9 μm.
[0044] Further preferably, in the circumferential direction, the second axial end face 112 of the inner ring 11 has a second axial circumferential runout t of the axis defined by the inner circumferential surface 110 of the inner ring 11. Sd2 is 2.647×10 -5 ×d±2μm, where d is the nominal inner diameter of the inner ring and the unit is mm. Thus, for example, for a spherical roller bearing with an inner ring nominal inner diameter d of 340 mm, the second axial circumferential runout t Sd2 It is 7-11 μm, more preferably 9 μm.
[0045] The above-mentioned axial circumferential runout can be measured in the following manner: the inner ring 11 is set on a rotating shaft, and while the inner ring 11 is rotated in the circumferential direction by the rotating shaft, measurement is performed through an instrument at any position on the first axial end face 111 / the second axial end face 112; if the measured position of the corresponding axial end face in the circumferential direction is not completely perpendicular to the axis, the instrument will show a changing reading, which reflects the axial circumferential runout of the corresponding axial end face.
[0046] It should be understood that the above-mentioned improvements on one or both of the first axial circumferential run-out and the second axial circumferential run-out of the inner ring can improve the bearing running accuracy, and when both are subjected to the above-mentioned optimization design, the bearing running accuracy will be better improved, and then the uniformity of the copper foil thickness will be improved.
[0047] See also Figure 4 According to the second preferred embodiment of the utility model, the utility model proposes to improve the verticality of the axial end face of the inner ring of the spherical roller bearing. By making a targeted design for the verticality of the axial end face of the inner ring, the running accuracy of the bearing can be significantly improved, thereby improving the radial runout of the cathode roller and improving the uniformity of the copper foil thickness. Such targeted improvement does not exist in the prior art. The inner ring of the spherical roller bearing in the prior art only meets conventional technical standards (such as ISO standards), and these standards do not put forward design requirements for the verticality of the axial end face of the inner ring.
[0048] Specifically, in the circumferential direction, the inner ring first selected position A on the inner circumferential surface 110 at the first axial end of the inner ring 11 relative to the second axial end surface 112 (reference plane D) of the inner ring 11 is t Sdr1 is 4.412×10 -5×d±2μm, where d is the nominal inner diameter of the inner ring and the unit is mm. Thus, for example, for a spherical roller bearing with an inner ring nominal inner diameter d of 340 mm, the first perpendicularity of the inner ring t Sdr1 It is 13-17μm, more preferably 15μm.
[0049] The first verticality of the inner ring is t Sdr1 The measurement can be carried out in the following manner: the second axial end face 112 of the inner ring 11 is placed on a plane, i.e. the second axial end face 112 is used as the reference plane D; the inner ring 11 is rotated in the circumferential direction, and at the same time, the instrument is used to measure at the selected position A. If the selected position A in the circumferential direction is not completely perpendicular to the reference plane D, the instrument will show a variable reading, which reflects the first perpendicularity t of the inner ring. Sdr1 .
[0050] Preferably, the first selected position A of the inner ring is any position on the inner circumferential surface 110, from the first axial end face 111 of the inner ring 11 to a range of 0.05-0.15w (preferably 0.1w) from the first axial end face, where w is the axial width of the inner ring. According to the research of the inventors, compared with designing the verticality at other positions, designing the verticality at a position within the above range can better improve the running accuracy of the bearing.
[0051] Further preferably, in the circumferential direction, the inner ring second perpendicularity t of the inner ring second selected position B on the inner circumferential surface 110 at the second axial end of the inner ring 11 relative to the first axial end surface 111 (reference plane E) of the inner ring 11 is Sdr2 is 4.412×10 -5 ×d±2μm, where d is the nominal inner diameter of the inner ring and the unit is mm. Thus, for example, for a spherical roller bearing with an inner ring nominal inner diameter d of 340 mm, the second perpendicularity t Sdr2 It is 13-17μm, more preferably 15μm.
[0052] The second verticality of the inner ring is t Sdr2 The measurement can be performed in the following manner: the first axial end face 111 of the inner ring 11 is placed on a plane, that is, the first axial end face 111 is used as the reference plane E; the inner ring 11 is rotated in the circumferential direction, and at the same time, the instrument is used to measure at the selected position B. If the selected position B in the circumferential direction is not completely perpendicular to the reference plane E, the instrument will have a variable reading, which reflects the second perpendicularity t of the inner ring. Sdr2 .
[0053] Preferably, the second selected position B of the inner ring is any position on the inner circumferential surface 110, from the second axial end face 112 of the inner ring 11 to a range of 0.05-0.15w (preferably 0.1w) from the second axial end face, where w is the axial width of the inner ring. According to the research of the inventors, compared with designing the verticality at other positions, designing the verticality at a position within the above range can better improve the running accuracy of the bearing.
[0054] It should be understood that the above-mentioned improvements on one or both of the first perpendicularity of the inner ring and the second perpendicularity of the inner ring can improve the bearing running accuracy, and when both are subjected to the above-mentioned optimization design, the bearing running accuracy will be better improved, and then the thickness uniformity of the copper foil will be improved.
[0055] See also Figure 5 According to the third preferred embodiment of the utility model, the utility model proposes to improve the verticality of the axial end face of the outer ring of the spherical roller bearing. By making a targeted design for the verticality of the axial end face of the outer ring, the running accuracy of the bearing can be significantly improved, thereby improving the radial runout of the cathode roller and improving the uniformity of the copper foil thickness. Such targeted improvement does not exist in the prior art. The outer ring of the spherical roller bearing in the prior art only meets conventional technical standards (such as ISO standards), and these standards do not put forward design requirements for the verticality of the axial end face of the outer ring.
[0056] Specifically, in the circumferential direction, the outer ring first selected position A on the outer peripheral surface 120 at the first axial end of the outer ring 12 relative to the second axial end surface 122 (reference plane D) of the outer ring 12 is t SD1 1.25×10 -5 ×D±2μm, where D is the nominal outer diameter of the outer ring and the unit is mm.
[0057] The first verticality of the outer ring is t SD1 The measurement can be performed in the following manner: the second axial end face 122 of the outer ring 12 is placed on a plane, i.e., the second axial end face 122 is used as the reference plane D; the outer ring 12 is rotated in the circumferential direction, and at the same time, the instrument is used to measure at the selected position A. If the selected position A in the circumferential direction is not completely perpendicular to the reference plane D, the instrument will have a variable reading, which reflects the first perpendicularity t of the outer ring. Sdr1 .
[0058] Preferably, the first selected position A of the outer ring is any position on the outer peripheral surface 120, from the first axial end face 121 of the outer ring 12 to a range of 0.05-0.15W (preferably 0.1W) from the first axial end face, where W is the axial width of the outer ring. According to the research of the inventors, compared with designing the verticality at other positions, designing the verticality at a position within the above range can better improve the running accuracy of the bearing.
[0059] Further preferably, in the circumferential direction, the outer ring second selected position B on the outer circumferential surface 120 at the second axial end of the outer ring 12 relative to the outer ring second perpendicularity t SD2 1.25×10 -5 ×D±2μm, where D is the nominal outer diameter of the outer ring and the unit is mm.
[0060] The second verticality of the outer ring is t SD2 The measurement can be performed in the following manner: the first axial end face 121 of the outer ring 12 is placed on a plane, that is, the first axial end face 121 is used as the reference plane E; the outer ring 12 is rotated in the circumferential direction, and at the same time, the instrument is used to measure at the selected position B. If the selected position B in the circumferential direction is not completely perpendicular to the reference plane E, the instrument will have a changed reading, which reflects the second perpendicularity t of the outer ring. Sdr2 .
[0061] Preferably, the second selected position B of the outer ring is any position on the outer peripheral surface 120, from the second axial end face 122 of the outer ring 12 to a range of 0.05-0.15W (preferably 0.1W) from the second axial end face, where W is the axial width of the outer ring. According to the research of the present inventors, compared with designing the verticality at other positions, designing the verticality at a position within the above range can better improve the running accuracy of the bearing.
[0062] It should be understood that the above-mentioned improvements on one or both of the first perpendicularity of the outer ring and the second perpendicularity of the outer ring can improve the bearing running accuracy, and when both are subjected to the above-mentioned optimization design, the bearing running accuracy will be better improved, and then the uniformity of the copper foil thickness will be improved.
[0063] Return to see Figure 2 According to the fourth preferred embodiment of the utility model, the radial clearance C between the roller 13 and the inner surface 123 of the outer ring is:
[0064] 5.588×10 -4 ×d≤C≤7.941×10 -4 ×d, where d is the nominal inside diameter of the inner ring and the unit is mm.
[0065] Therefore, for example, for a spherical roller bearing with an inner ring nominal inner diameter d of 340 mm, the radial clearance C is 190 to 270 μm.
[0066] Although there are general regulations for the radial clearance of spherical roller bearings in the prior art, the conventional radial clearance is greater than the above radial clearance value. For example, in the prior art, for a spherical roller bearing with a nominal inner diameter d of 340 mm in the inner ring, the radial clearance C is usually 270 to 360 μm. Therefore, by improving the radial clearance C between the roller and the inner surface 120 of the outer ring, the running accuracy of the bearing can be significantly improved, thereby improving the radial runout of the cathode roller and improving the uniformity of the copper foil thickness.
[0067] Further, it should be understood that the first to fourth embodiments of the utility model can be combined in any way, that is, the above-mentioned improvements can be made to any one or any combination of the first and second axial circumferential run-outs of the inner ring, the first and second perpendicularities of the inner ring, and the first and second perpendicularities of the outer ring, so as to achieve a significant improvement in the bearing running accuracy, and further improve the radial run-out of the cathode roller and the thickness uniformity of the copper foil (especially 3-6μm thin copper foil).
[0068] In addition, the utility model also proposes an improved design for the roller. Figure 2 as well as Figure 6a In conventional design, between the opposite end faces of the two rows of rollers in a double-row spherical roller bearing, that is, Figure 2 There is also a guide ring (not shown) at the dotted box S. This guide ring helps to guide the roller into the correct position, thereby facilitating the operation of the spherical roller bearing.
[0069] In this conventional design, Figure 6a As shown, the roller 13 is usually designed to have a spherical end face R, with a small oblique angle γ between the axis of the roller itself and the rotation axis of the bearing, so that the spherical end face R allows the roller 13 to contact the surface of the guide ring G as little as possible. Nevertheless, there is still a certain contact between the roller 13 and the guide ring G (such as in the area M), which will cause severe wear of the guide ring G and the roller 13 and reduce the service life of the bearing. Moreover, the roller 13 and the guide ring G will wear away some material due to this contact. In particular, in the case where the guide ring G is usually made of cast iron material, this wear causes the cast iron particles of the guide ring to fall and enter the gap between the roller 13 and the raceway, and further causes wear to the roller 13 and the raceway. As a result, the geometry of the roller 13 and the raceway is difficult to maintain stable, and the radial clearance C between the roller 13 and the outer ring 12 changes unexpectedly, so that the spherical roller bearing loses its running accuracy, which will further cause the radial runout 8 of the cathode roller 4, seriously affecting the uniformity of the copper foil thickness.
[0070] In addition, machining the roller 13 with a spherical end surface R will also increase the manufacturing cost of the roller. Ideally, the end surface of the roller 13 should be a flat surface. Figure 6b As shown, in the case where the end surface of the roller 13 is a flat surface, it will have edge contact with the guide ring G, which may even cause more severe wear.
[0071] To this end, the present invention proposes to remove the guide ring G. Figure 2 As shown in the figure, at the dotted line frame S, the spherical roller bearing of the present invention does not include a guide ring. This not only solves the wear problem caused by the edge contact between the roller and the guide ring, but also makes the radial clearance C more stable, thereby improving the radial runout of the cathode roller and improving the uniformity of the copper foil thickness. At the same time, the opposite end surface 130 of each roller 13 in the two rows of rollers 13 of the present invention is formed as a flat surface, as shown in FIG. Figure 7 As shown, this further reduces the manufacturing cost of the roller. In particular, the design of the utility model allows the bearing to operate stably at a relatively low speed (eg, 5-40 rpm, in particular, 10-30 rpm).
[0072] It should also be understood that the above-mentioned design of the roller of the utility model can also be combined with any one of the first to third preferred embodiments mentioned above, so as to further improve the radial runout of the cathode roller and improve the uniformity of the copper foil thickness.
[0073] The exemplary implementation modes of the present disclosure are described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present disclosure, various modifications and variations can be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present disclosure can be combined in various ways without exceeding the protection scope of the present disclosure, which is determined by the attached claims.
Claims
1. A spherical roller bearing, characterized in that: The spherical roller bearing comprises an inner ring (11), an outer ring (12), and a roller (13) arranged between the inner ring (11) and the outer ring (12), wherein the spherical roller bearing satisfies at least one of the following conditions: a) In the circumferential direction, a first axial circumferential runout t of a first axial end face (111) of the inner ring (11) relative to an axis defined by an inner circumferential surface (110) of the inner ring Sd1 is 2.647×10 -5 ×d±2μm, where d is the nominal inner diameter of the inner ring and the unit is mm; b) in the circumferential direction, a first inner ring perpendicularity t of a first selected position of the inner ring on the inner circumferential surface (110) at the first axial end of the inner ring (11) relative to a second axial end surface (112) of the inner ring (11) Sdr1 is 4.412×10 -5 ×d±2μm, where d is the nominal inner diameter of the inner ring and the unit is mm; c) in the circumferential direction, a first outer ring perpendicularity t of a first selected position of the outer ring on the outer circumferential surface (120) at the first axial end of the outer ring (12) relative to a second axial end surface (122) of the outer ring (12) SD1 1.25×10 -5 ×D±2μm, where D is the nominal outer diameter of the outer ring and the unit is mm; d) The radial clearance C between the roller (13) and the inner surface of the outer ring (123) is: 5.588×10 -4 ×d≤C≤7.941×10 -4 ×d, where d is the nominal inside diameter of the inner ring and the unit is mm.
2. The spherical roller bearing according to claim 1, characterized in that: The spherical roller bearing also satisfies at least one of the following conditions: e) In the circumferential direction, a second axial circumferential runout t of the second axial end face (112) of the inner ring (11) relative to the axis defined by the inner circumferential surface (110) of the inner ring Sd2 is 2.647×10 -5 ×d±2μm, where d is the nominal inner diameter of the inner ring and the unit is mm; f) in the circumferential direction, a second inner ring perpendicularity t of a second selected position of the inner ring on the inner circumferential surface (110) at the second axial end of the inner ring (11) relative to a first axial end surface (111) of the inner ring (11) Sdr2 is 4.412×10 -5 ×d±2μm, where d is the nominal inner diameter of the inner ring and the unit is mm; g) in the circumferential direction, a second outer ring perpendicularity t of a second selected position of the outer ring on the outer circumferential surface (120) at the second axial end of the outer ring (12) relative to a first axial end surface (121) of the outer ring (12) SD2 1.25×10 -5 ×D±2μm, where D is the nominal outer diameter of the outer ring and the unit is mm.
3. The spherical roller bearing according to claim 1, characterized in that: In condition b), the first selected position of the inner ring is any position on the inner circumferential surface (110), from the first axial end face (111) of the inner ring (11) to a distance of 0.05-0.15w from the first axial end face (111), where w is the axial width of the inner ring.
4. The spherical roller bearing according to claim 2, characterized in that: In condition f), the second selected position of the inner ring is any position on the inner circumferential surface (110), from the second axial end face (112) of the inner ring (11) to a distance of 0.05-0.15w from the second axial end face (112), where w is the axial width of the inner ring.
5. The spherical roller bearing according to claim 1, characterized in that: In condition c), the first selected position of the outer ring is any position on the outer circumferential surface (120), from the first axial end face (121) of the outer ring (12) to a distance of 0.05-0.15W from the first axial end face (121), where W is the axial width of the outer ring.
6. The spherical roller bearing according to claim 2, characterized in that: In condition g), the second selected position of the outer ring is any position on the outer circumferential surface (120), from the second axial end face (122) of the outer ring (12) to a distance of 0.05-0.15W from the second axial end face (122), where W is the axial width of the outer ring.
7. The spherical roller bearing according to claim 1, characterized in that The inner ring (11) has a conical inner circumferential surface.
8. The spherical roller bearing according to any one of claims 1 to 7, characterized in that: The invention comprises two rows of rollers (13) arranged between an inner ring (11) and an outer ring (12), and no guide ring exists between the two rows of rollers (13).
9. The spherical roller bearing according to claim 8, characterized in that The opposite end surfaces (130) of each roller (13) in the two rows of rollers (13) are formed as flat surfaces.
10. The spherical roller bearing according to claim 9, characterized in that The spherical roller bearings run at a rotational speed of 5 to 40 rpm.