High-temperature-resistant long-service-life thin-wall deep groove ball bearing

Abstract

The invention relates to the technical field of bearings, and discloses a high-temperature-resistant long-service-life thin-wall deep groove ball bearing which comprises an outer ring, an inner ring, grooves formed in the inner ring side of the outer ring and the outer ring side of the inner ring, balls arranged in the grooves and distributed in an annular array, and a sealing piece arranged in a gap between the outer ring and the inner ring. And the retainer is arranged between the gaps of the outer ring and the inner ring and specifically comprises limiting rings arranged on the two sides of the balls and annular plates arranged on the opposite sides of the two limiting rings. According to the high-temperature-resistant long-service-life thin-wall deep groove ball bearing, by arranging the annular plates and the heat dissipation plates, when a large amount of heat is generated by friction between the balls and the inner walls of the grooves, part of the heat can be rapidly transmitted to the heat dissipation plates and is radiated outwards through the heat dissipation plates, so that the heat generated by friction between the grooves can be rapidly guided out, and the heat dissipated by the heat dissipation plates can also be transmitted to the outer ring and the inner ring; therefore, the internal temperature of the bearing is effectively reduced, and the service life of the bearing is prolonged.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of bearings, in particular to a high-temperature-resistant long-service-life thin-wall deep-groove ball bearing. BACKGROUND

[0002] The thin-wall deep-groove ball bearing has become a core supporting component for the miniaturization and integration design of high-end equipment such as electric tool motors, new energy vehicle drive motors, aerospace accessories and metallurgical equipment roller systems, due to the advantages of compact structure, small radial size, lightweight and convenient assembly. In these application scenarios, the harshness of the device operating environment puts forward extremely high requirements for the high-temperature resistance of the bearing: when the electric tool motor operates at high speed (the rotating speed often reaches 15000-30000 RPM), the bearing friction heat and the motor winding heat dissipation are superimposed, and the working temperature can reach 150-250 DEG C; the bearing cabin temperature of the new energy vehicle drive motor under continuous high load working condition is easy to break through 200 DEG C; the bearings in the aerospace accessories and the metallurgical equipment need to operate stably in the extreme high-temperature environment of 250-350 DEG C.

[0003] In order to adapt to complex working conditions such as dust and water vapor, the thin-wall deep-groove ball bearings used in the above-mentioned scenarios generally adopt a sealing structure (contact or non-contact sealing) to prevent leakage of lubricating medium and invasion of external impurities. However, the existence of the sealing structure aggravates the high-temperature problem of the bearing, which becomes the core bottleneck restricting the service life and reliability of the bearing: the existing sealed thin-wall deep-groove ball bearings generally have problems such as service life reduction (less than 800 hours), lubrication failure and sealing element aging under the working condition of 180 DEG C or above, which cannot meet the use demand of high-end equipment on the bearing "long service life of more than 1500 hours", and the specific technical defects and high-temperature causes are as follows: The sealing structure blocks the heat dissipation path, resulting in the accumulation of friction heat. The thermal conductivity of the sealing element (such as fluororubber and nitrile rubber) is extremely low, much lower than that of bearing steel, forming a "thermal barrier layer": on the one hand, the sealing structure completely seals the internal space of the bearing, and the external air cannot enter to form convection heat dissipation, but can only rely on the single heat conduction path of "friction area -> raceway -> inner / outer ring -> device shell", and the heat dissipation efficiency is reduced by more than 60% compared with the open bearing. Data shows that the internal temperature of the sealed thin-wall deep-groove ball bearing is 30-50 DEG C higher than that of the open bearing under the same working condition, and the internal temperature of the sealed bearing can reach 220 DEG C at a rotating speed of 15000 RPM, while the internal temperature of the open bearing is only 170 DEG C. SUMMARY

[0004] In view of the problem that the bearing sealing structure hinders air convection and aggravates the high-temperature problem of the bearing in the prior art, a high-temperature-resistant long-service-life thin-wall deep-groove ball bearing is provided.

[0005] The application provides a high-temperature-resistant long-service-life thin-wall deep-groove ball bearing, which aims to rebuild the heat dissipation path and improve the heat dissipation effect of the bearing.

[0006] The technical scheme of the present application is: a high-temperature-resistant long-service-life thin-wall deep-groove ball bearing, comprising an outer ring and an inner ring, a groove formed on the inner ring side of the outer ring and the outer ring side of the inner ring, a plurality of balls arranged in a ring array in the groove, a sealing sheet arranged between the gap of the outer ring and the inner ring, and a retainer arranged between the gap of the outer ring and the inner ring, the retainer comprising a limiting ring arranged on both sides of the ball, a ring plate arranged on the side opposite to the limiting ring, a limiting groove formed on the side opposite to the limiting ring in a ring array, a locking hole formed through the side surface of the ring plate, a lock bolt arranged in the locking hole, and a heat dissipation plate arranged on the side of the ring plate away from the limiting ring, and a pouring hole formed through the side surface of the ring plate. The ball is clamped in the limiting groove, the width of the ring plate is greater than the thickness of the limiting ring, and the lock bolt penetrates from the locking hole on one side of the ring plate to the locking hole on the other side of the ring plate.

[0007] Further, the lock bolt specifically comprises a main rod penetrating the locking hole, a top cap arranged at one end of the main rod, and a cavity formed at the other end of the main rod.

[0008] Further, the retainer further comprises a weight-reducing hole formed on the side opposite to the limiting ring in a ring array, and the weight-reducing hole and the limiting groove are arranged in an interval.

[0009] Further, the pouring holes are arranged in a ring array around the ring plate in groups, the pouring holes and the limiting grooves are arranged in an interval, and the pouring holes in the same group are arranged on both sides of the limiting ring.

[0010] Further, the side of the ring plate close to the limiting ring is provided with a gauze, the gauze covers the opening of the pouring hole, and the gauze specifically comprises a connecting part and a protruding part.

[0011] Further, the sealing sheet comprises a clamping part, a connecting ring and an elastic part from outside to inside, a clamping groove is formed on the edge of the inner ring side of the outer ring, and a clamping groove is formed on the edge of the outer ring side of the inner ring. The clamping part is clamped in the clamping groove, the elastic part is clamped in the clamping groove, and the elastic part is arranged in a hook shape.

[0012] Further, a pry opening is formed on the surface of the limiting ring, and the inner walls on both sides of the pry opening are pressed against each other under the action of the elastic force to form a gap.

[0013] Further, the opening of the pry opening is covered with a lip, and the lip is divided into a hard area and an elastic area.

[0014] Further, the clamping part, the connecting ring and the elastic part are integrally formed, the lip extends inwardly from the surface of the clamping part and covers the pry opening.

[0015] Further, the connecting ring and the elastic part are integrally formed, the clamping part is annularly sleeved on the outside of the connecting ring, the lip extends outward from the surface of the connecting ring, and the prying opening is shielded.

[0016] Advantages of the present application: 1. By arranging the ring plate and the heat dissipation plate, when a large amount of heat is generated by the friction between the ball and the inner wall of the groove, part of the heat is directly transmitted to the main body of the outer ring and the inner ring through the inner wall of the groove, and then radiated to the surrounding air, and part of the heat is quickly transmitted to the ring plate by the limiting ring, and then transmitted to the heat dissipation plate, and then radiated outward through the heat dissipation plate, so that the heat generated by the friction of the groove can be quickly discharged, and the heat dissipated by the heat dissipation plate is also transmitted to the outer ring and the inner ring, and then radiated to the surrounding air, which effectively reduces the internal temperature of the bearing, prolongs the service life of the bearing, and strengthens the structure of the limiting ring by the ring plate, reduces the deformation after long-time work.

[0017] 2. By arranging the lock bolt, when the lock bolt is fixed, the lock bolt penetrates the locking hole, and then abuts against the top cap, and the main rod is impacted from the other end by the "convex" punch, so that the cavity opening is turned outward and clamped at the opening of the locking hole, when disassembly is needed, the circular punch is inserted into the cavity to restore the cavity opening turning outward, so that the lock bolt is smoothly separated from the locking hole, so that the retainer can be quickly assembled and disassembled, and the damage of the limiting ring and the ring plate during disassembly and assembly can be reduced.

[0018] 3. By arranging the gauze, when the solid lubricating oil is added, the syringe is used to synchronously pour the lubricating oil into multiple pouring holes, the solid lubricating oil is first filled in the gauze, and then penetrates out from the connecting part and the protruding part, so that the distribution of the solid lubricating oil between the two ring plates is more uniform, the lubricating effect during the rolling of the ball is improved, and part of the lubricating oil is wrapped in the gauze and cannot enter the groove, so that excessive lubricating oil does not generate large resistance, and when part of the solid lubricating oil is lost due to decomposition, pollution and evaporation, the temperature in the bearing is increased, the lubricating oil in the gauze flows out from the gauze due to the increase of the temperature and the increase of the fluidity, and the lubricating effect is prolonged.

[0019] 4. By arranging the prying opening and the lip, when the sealing piece needs to be disassembled, the flat tool is used to push away the lip, and then the tool is inserted into the prying opening, the tool is moved, the clamping part is deformed, and the clamping part is separated from the clamping groove, so that the disassembly of the sealing piece is completed, the force point of the clamping part is located in the prying opening, the force is not applied from the edge of the clamping part, the edge of the clamping part is not damaged and deformed, the stability of installation is not affected, and the prying opening is always in a sealed state through the lip. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a perspective view of the present application; Figure 2Partial exploded view of the present application; Figure 3 Schematic view of the cage of the present application; Figure 4 Schematic view of the present application Figure 3 Schematic view of the inner cage; Figure 5 Partial exploded view of the cage of the present application; Figure 6 Schematic view of the gauze of the present application; Figure 7 Plan view of the present application; Figure 8 Schematic view of the present application Figure 7 Sectional view at A-A of the present application; Figure 9 Schematic view of the present application Figure 7 Sectional view at B-B of the present application; Figure 10 Schematic view of the present application Figure 8 Sectional view of the present application; Figure 11 Schematic view of the present application Figure 9 Sectional view of the present application; Figure 12 Schematic view of the sealing piece in Example Two of the present application; Figure 13 Sectional view of the sealing piece in Example Three of the present application; Figure 14 Schematic view of the sealing piece in Example Four of the present application; Figure 15 Sectional view of the sealing piece in Example Four of the present application.

[0021] In the figure: 1, outer ring; 11, clamping slot; 2, inner ring; 21, clamping slot; 3, groove; 4, ball; 5, sealing piece; 51, clamping part; 52, connecting ring; 53, elastic part; 54, prying opening; 55, lip; 56, ring opening; 6, cage; 61, limiting ring; 62, ring plate; 63, limiting groove; 64, locking hole; 65, lock; 651, main rod; 652, top cap; 653, cavity; 66, heat sink; 67, pouring hole; 68, gauze; 681, connecting part; 682, protruding part; 69, weight-reducing hole. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0023] Example 1, refer to Figures 1-11For the first embodiment of the present application, a high-temperature-resistant long-life thin-wall deep-groove ball bearing is provided, which comprises an outer ring 1 and an inner ring 2, a groove 3 opened on the inner ring side of the outer ring 1 and the outer ring side of the inner ring 2, a plurality of balls 4 arranged in an annular array in the groove 3, a sealing sheet 5 arranged between the gap of the outer ring 1 and the inner ring 2, and a retainer 6 arranged between the gap of the outer ring 1 and the inner ring 2. The retainer 6 specifically comprises a limiting ring 61 arranged on both sides of the ball 4, a ring plate 62 arranged on the side opposite to the limiting ring 61, a limiting groove 63 opened on the side of the limiting ring 61 in an annular array, a locking hole 64 opened through the side surface of the ring plate 62, a lock bolt 65 arranged in the locking hole 64, and a heat sink plate 66 arranged on the side of the ring plate 62 away from the limiting ring 61. A pouring hole 67 is also opened through the side surface of the ring plate 62.

[0024] Specifically, the outer ring 1 is sleeved on the outside of the inner ring 2, and solid lubricating oil is filled between the outer ring 1 and the inner ring 2. The ball 4 rolls in the groove 3, and the two limiting rings 61 are spliced together. The limiting ring 61 and the outer ring 1 and the inner ring 2 are made of the same material, which is steel. The limiting ring 61 is fixedly connected with the ring plate 62, and the cross section thereof is in the shape of "T". The ball 4 is connected in the limiting groove 63. The width of the ring plate 62 is greater than the thickness of the limiting ring 61, and the thickness of the ring plate 62 is not more than one fourth of the thickness of the limiting ring 61. The inner and outer contours of the ring plate 62 extend towards the inner ring 2 and the groove 3 respectively, leaving only a narrow gap. The narrow gap is also filled with solid lubricating oil, which reduces the leakage of solid lubricating oil in the groove 3 and also does not generate excessive additional friction. The locking holes 64 on the two ring plates 62 are all through the ring plate 62 and are symmetrically arranged across the groove 3. The lock bolt 65 penetrates from the locking hole 64 on the surface of one side of the ring plate 62 to the locking hole 64 on the surface of the other side of the ring plate 62. The heat sink plate 66 is fixedly connected with the ring plate 62. The heat sink plate 66 and the ring plate 62 are made of aluminum alloy. The overall volume of the heat sink plate 66 and the ring plate 62 is smaller than the volume of the limiting ring 61. The heat sink plate 66 and the ring plate 62 are also filled with solid lubricating oil between the gap of the outer ring 1 and the inner ring 2. In this way, the heat conduction efficiency between the heat sink plate 66 and the outer ring 1 and the inner ring 2 can be improved.

[0025] Because the sealing sheet 5 is arranged on both sides of the outer ring 1 and the inner ring 2, the air convection between the outer ring 1 and the inner ring 2 is weak. The main heat dissipation relies on the heat conduction of the outer ring 1 and the inner ring 2, which accounts for 70%-85% of the overall heat dissipation. In this way: When the ball 4 and the inner wall of the groove 3 generate a large amount of heat by friction, part of the heat is directly transmitted to the main body of the outer ring 1 and the inner ring 2 through the inner wall of the groove 3, and then radiated to the surrounding air, and part of the heat is quickly transmitted to the ring plate 62 by the limiting ring 61, and then transmitted to the heat dissipation plate 66, and then radiated outward through the heat dissipation plate 66, so that the heat generated by the friction of the groove 3 can be quickly conducted out, and the heat dissipated by the heat dissipation plate 66 is also transmitted to the outer ring 1 and the inner ring 2, and then radiated to the surrounding air, which effectively reduces the internal temperature of the bearing, prolongs the service life of the bearing, and the structure of the ring plate 62 also strengthens the limiting ring 61 and reduces the deformation after long time work.

[0026] The lock bolt 65 specifically includes a main rod 651 penetrating the locking hole 64, a top cap 652 arranged at one end of the main rod 651, and a cavity 653 opened at the other end of the main rod 651.

[0027] Specifically, the top cap 652 is integrally formed with the main rod 651, and the top cap 652 is attached to the opening of the locking hole 64 on one side, and the depth of the cavity 653 exceeds one half of the length of the main rod 651, and the use of the lock bolt 65 requires a punch and two kinds of punches, one of which is cylindrical and can be inserted into the cavity 653, and the other is in the shape of a "convex" character.

[0028] By arranging the lock bolt 65, when the lock bolt 65 is fixed, the lock bolt 65 penetrates the locking hole 64, and then pushes against the top cap 652, and the "convex" shaped punch impacts the main rod 651 from the other end, causing the opening of the cavity 653 to evert and be locked in the opening of the locking hole 64, and when disassembling, the cylindrical punch is inserted into the cavity 653, causing the opening of the cavity 653 to evert and restore, and the lock bolt 65 is smoothly separated from the locking hole 64, so that the quick assembly and disassembly of the retainer 6 can be realized, and the damage to the limiting ring 61 and the ring plate 62 during disassembly can be reduced.

[0029] Specifically, the retainer 6 further includes a weight-reducing hole 69 arranged in an annular array on the opposite side of the two limiting rings 61, and the weight-reducing hole 69 and the limiting groove 63 are arranged at intervals, so that the overall weight of the limiting ring 61 is reduced, and the resistance of the retainer 6 when rotating with the groove 3 is weakened.

[0030] Specifically, the pouring hole 67 is arranged in an annular array around the ring plate 62 in groups, and the pouring hole 67 and the limiting groove 63 are arranged at intervals, and the same group of pouring holes 67 is arranged on the inner and outer sides of the limiting ring 61, so that the solid lubricating oil can be evenly distributed on the inner and outer sides of the limiting ring 61, which is conducive to improving the lubricating effect.

[0031] Specifically, the ring plate 62 is provided with a gauze 68 on one side close to the limiting ring 61, the gauze 68 covers the opening of the perfusion hole 67, and the gauze 68 specifically includes two parts of a connecting part 681 and a protruding part 682, the connecting part 681 and the protruding part 682 are integrally formed, the protruding part 682 is located in the gap of the ball 4, and the solid lubricating oil can penetrate the gauze 68 when being pressed.

[0032] By arranging the gauze 68, when the solid lubricating oil is added, the syringe is used to synchronously pour the lubricating oil into the plurality of perfusion holes 67, the solid lubricating oil can first fill the gauze 68, and then penetrate out from the connecting part 681 and the protruding part 682, so that the distribution of the solid lubricating oil between the two ring plates 62 is more uniform, the lubricating effect during rolling of the ball 4 is improved, meanwhile, part of the lubricating oil is wrapped in the gauze 68 and cannot enter the groove 3, so that too much lubricating oil does not generate large resistance, and when part of the solid lubricating oil is decomposed, contaminated, evaporated or lost, the temperature in the bearing rises, the lubricating oil in the gauze 68 flows out from the gauze 68 due to the increase in temperature and the increase in fluidity, and the lubricating effect is prolonged.

[0033] Embodiment 2, refer to Figures 7-12 As a second embodiment of the application, different from the first embodiment is that the sealing sheet 5 includes three parts of a clamping part 51, a connecting ring 52 and an elastic part 53 from outside to inside, the edge of the inner ring side of the outer ring 1 is provided with a clamping slot 11, and the outer ring side edge of the inner ring 2 is provided with a clamping slot 21.

[0034] Specifically, the clamping part 51 is clamped in the clamping slot 11, the elastic part 53 is clamped in the clamping slot 21, the clamping part 51, the connecting ring 52 and the elastic part 53 close the two ends of the outer ring 1 and the inner ring 2, and the elastic part 53 is arranged in a bent hook shape and can be bent.

[0035] Specifically, the surface of the limiting ring 61 is provided with a pry opening 54, the inner walls on both sides of the pry opening 54 are pressed against each other to form a gap under the action of elastic force, the pry opening 54 is distributed around the clamping part 51, and the number of the pry openings 54 is not less than three; the opening of the pry opening 54 is covered with a lip 55, the lip 55 is divided into a hard area and an elastic area, and the elastic area is covered near the opening of the pry opening 54 and is not easy to be damaged or deformed under stress.

[0036] By arranging the pry opening 54 and the lip 55, when the sealing sheet 5 needs to be disassembled, the lip 55 is pried open by using a flat tool, the tool is inserted into the pry opening 54, the tool is moved, the clamping part 51 is deformed, and the clamping part 51 is separated from the clamping slot 11, so that the disassembly of the sealing sheet 5 is completed, the force point of the clamping part 51 is located in the pry opening 54, the force is not applied from the edge of the clamping part 51, the edge of the clamping part 51 is not damaged or deformed, the stability of installation is not affected, and the pry opening 54 is always in a sealed state through the lip 55.

[0037] The rest of the structure is the same as that of Example 1.

[0038] Example 3, refer to Figures 12-13 As the third embodiment of the present application, the difference between this embodiment and the second embodiment is that the clamping portion 51, the connecting ring 52 and the elastic portion 53 are integrally formed, the lip 55 extends inwardly from the surface of the clamping portion 51 and covers the pry opening 54.

[0039] By simplifying the design of the sealing piece 5, the sealing piece 5 can be quickly processed by injection equipment, and the processing and raw material costs can be effectively controlled.

[0040] The rest of the structure is the same as that of Example 2.

[0041] Example 4, refer to Figures 14-15 As the fourth embodiment of the present application, the difference between this embodiment and the second embodiment is that the connecting ring 52 and the elastic portion 53 are integrally formed, the clamping portion 51 is annularly sleeved on the outside of the connecting ring 52, the lip 55 extends outwardly from the surface of the connecting ring 52 and covers the pry opening 54, the ring opening 56 near the opening of the groove 3 is widened to form a tapered opening, the surface of the connecting ring 52 in contact with the ring opening 56 is expanded along the tapered opening to form a tapered arc surface, and one end of the pry opening 54 penetrates into the tapered opening.

[0042] By dividing the sealing piece 5 into two parts, it is more convenient to disassemble the sealing piece 5.

[0043] The rest of the structure is the same as that of Example 2.

[0044] It should be noted that the above examples are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A high-temperature-resistant long-life thin-wall deep-groove ball bearing, comprising an outer ring (1) and an inner ring (2), a groove (3) opened on the inner ring side of the outer ring (1) and the outer ring side of the inner ring (2), a plurality of balls (4) arranged in a ring array in the groove (3), and a sealing sheet (5) arranged between the gap of the outer ring (1) and the inner ring (2), characterized in that: The retainer (6) is arranged between the outer ring (1) and the inner ring (2) gap, and specifically includes a limiting ring (61) arranged on both sides of the ball (4), a ring plate (62) arranged on the opposite side of the two limiting rings (61), a limiting groove (63) arranged in a ring array on the opposite side of the two limiting rings (61), a locking hole (64) penetratingly arranged on the side surface of the ring plate (62), a lock bolt (65) arranged in the locking hole (64), a heat sink (66) arranged on the side of the ring plate (62) away from the limiting ring (61), and a perfusion hole (67) penetratingly arranged on the side surface of the ring plate (62). ​ The ball (4) is clamped in the limiting groove (63), the width of the ring plate (62) is greater than the thickness of the limiting ring (61), and the lock bolt (65) penetrates from the locking hole (64) on one side of the ring plate (62) to the locking hole (64) on the other side of the ring plate (62).

2. The high-temperature and long-life thin-walled deep-groove ball bearing according to claim 1, characterized in that: The lock bolt (65) specifically includes a main rod (651) penetrating the locking hole (64), a top cap (652) arranged at one end of the main rod (651), and a cavity (653) arranged at the other end of the main rod (651).

3. The high-temperature and long-life thin-walled deep-groove ball bearing according to claim 1, characterized in that: The retainer (6) further includes a weight-reducing hole (69) arranged in a ring array on the opposite side of the two limiting rings (61), and the weight-reducing hole (69) and the limiting groove (63) are arranged in an interval.

4. The high-temperature and long-life thin-walled deep-groove ball bearing of claim 1, wherein: The perfusion holes (67) are arranged in a ring array around the ring plate (62) in groups, the perfusion holes (67) and the limiting grooves (63) are arranged in an interval, and the perfusion holes (67) in the same group are arranged on the inner and outer sides of the limiting ring (61).

5. The high-temperature and long-life thin-walled deep-groove ball bearing according to claim 4, characterized in that: The ring plate (62) is provided with a gauze (68) on the side close to the limiting ring (61), the gauze (68) covers the opening of the perfusion hole (67), and the gauze (68) specifically includes a connecting part (681) and a protruding part (682).

6. The high-temperature and long-life thin-walled deep-groove ball bearing according to claim 5, characterized in that: The sealing sheet (5) sequentially includes a clamping part (51), a connecting ring (52) and an elastic part (53) from outside to inside, and the edge of the inner ring side of the outer ring (1) is provided with a clamping groove (11), and the edge of the outer ring side of the inner ring (2) is provided with a clamping groove (21). The clamping part (51) is clamped in the clamping groove (11), the elastic part (53) is clamped in the clamping groove (21), and the elastic part (53) is arranged in a hook shape.

7. The high-temperature and long-life thin-walled deep-groove ball bearing according to claim 6, characterized in that: The surface of the limiting ring (61) is provided with a pry opening (54), and the inner walls on both sides of the pry opening (54) are extruded to form a gap under the action of elastic force.

8. The high-temperature and long-life thin-walled deep-groove ball bearing according to claim 7, characterized in that: The opening of the pry opening (54) is covered with a lip (55), and the lip (55) is divided into a hard area and an elastic area.

9. The high-temperature and long-life thin-walled deep-groove ball bearing according to claim 8, characterized in that: The clamping part (51), the connecting ring (52) and the elastic part (53) are integrally formed, the lip (55) extends inwardly from the surface of the clamping part (51) and shields the pry opening (54).

10. The high-temperature and long-life thin-walled deep-groove ball bearing of claim 8, wherein: The connecting ring (52) and the elastic part (53) are integrally formed, the clamping part (51) is annularly arranged on the outer side of the connecting ring (52), and the lip (55) extends outwardly from the surface of the connecting ring (52) and shields the pry opening (54).

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