57 results about "Ceramic bearing" patented technology

The utility model discloses a kind of silicon nitride ceramic bearing dynamic balance test tool, belong to dynamic balance test field.A kind of silicon nitride ceramic bearing dynamic balance test tool, including rack and the positioning frame of detachable installation on rack, further include: rotation is installed on the rack gas expansion shaft, wherein, the gas expansion shaft is provided with the driving part for driving gas expansion shaft rotation;At least two groups of laser vibration meter, the laser vibration meter is set on gas expansion shaft upper end, wherein, the laser vibration meter is provided with adjusting member;Positioning frame of sliding connection on the rack;The utility model can realize the quick positioning of multiple silicon nitride ceramic bearings by using gas expansion shaft, subsequently under the driving of driving part, make multiple silicon nitride ceramic bearings rotate, and the position adjustment of multiple laser vibration meters using adjusting member, can realize one-to-one monitoring, to improve silicon nitride ceramic bearing dynamic balance detection quality and efficiency.

This invention relates to an apparatus and method for preparing magnesium alloy wire for arc additive manufacturing by pulsed current-assisted hot drawing with a roller die, belonging to the field of magnesium alloy wire preparation technology. The apparatus includes a pay-off frame, a straightener, a tubular heating furnace, a pulse power supply, a roller die, and a drawing machine. The roller die includes a roller die frame and roller sets. The roller die frame includes an elliptical roller die frame and a circular roller die frame. The elliptical roller die frame contains an elliptical roller set, and the circular roller die frame contains a circular roller set. The rollers of the elliptical and circular roller sets are fixed to the elliptical and circular roller die frames by high-temperature resistant ceramic bearings. This method uses a pulsed current to connect the electrodes to the rollers and the pulse power supply, transmitting the pulsed current to the wire through the rollers. Furthermore, the rollers and wire maintain close contact at all times, avoiding or even eliminating the adverse effects of friction and arcing between the electrodes and wire on the surface quality of the wire during conventional electroplastic drawing.

The application relates to the field of bearing ball preparation, and discloses a forming die and a preparation process of a thermal shock-resistant silicon nitride ceramic bearing ball, which comprises a die base, a DC motor is installed at the top of the die base, a transmission rod is rotationally connected to the top of the die base, a guide rod is fixedly connected to the top of the die base, the output end of the DC motor is fixedly connected with one end of the transmission rod, a guide screw is fixedly connected to one end of the transmission rod, and a sliding frame is threadedly connected to the outside of the guide screw. The die plate is arranged to slide on the top of the mounting base through the sliding T block, and is limited through the limiting block; when the user pushes the push block, the limiting block can be retracted into the limiting body, the die plate can be conveniently disassembled, disassembled and installed, the die plate can be conveniently disassembled, replaced and cleaned, and the problem of inconvenient disassembly and installation of the die plate is solved.

Disclosed is a production process for a ceramic bearing component part (1), in which the process comprises the steps of: providing (S1) a ceramic bearing component part (1) having a naturally generated oxide layer (4) having a first thickness (d1), and at least partially modifying (S2, S3, S4, S5) the naturally generated oxide layer (4) on the surface of the ceramic component (1) and / or of the ceramic material.

This application relates to the field of ceramic bearings, and in particular to a corrosion-resistant, high-hardness sapphire bearing. A corrosion-resistant, high-hardness sapphire bearing includes a sapphire inner ring, a sapphire outer ring, a cage, ceramic balls, and a dust cover. The cage has a plurality of ball-retaining grooves; the ceramic balls are disposed within the ball-retaining grooves; a grease channel communicating with the ball-retaining grooves is formed on the surface of the cage; the dust cover has an injection hole; and a rubber plug is fixedly connected to the injection hole of the dust cover. In this application, the corrosion-resistant, high-hardness sapphire bearing allows grease to be injected into the surface of the ceramic balls through the injection hole of the dust cover. Specifically, the grease sequentially passes through the injection hole of the dust cover and the grease channel formed by the cage to adhere to the surface of the ceramic balls. Rotating the sapphire bearing evenly disperses the grease across the surface of the ceramic balls, effectively simplifying the grease replenishment process for sapphire bearings.

The application discloses a kind of preparation methods of high wear-resistant ceramic composite bearing, comprising the following steps: S1, raw material gradient premix preparation;S2, gradient green compact forming and furnace loading;S3, magnetron sputtering (SPS) collaborative sintering;S4, ceramic body interface activation treatment;S5, / hydroxyapatite gradient transition layer preparation;S6, precision post-processing and performance detection.The application solves the problem that traditional ceramic bearing causes inner and outer layer performance homogenization due to raw material homogenization mixing, sintering density is insufficient, interface treatment is simple, coating adhesion is weak and easy to fall off, and post-processing precision is low, which makes it difficult to meet the demand of high wear-resistant, high stability and severe working condition.

The invention discloses a bias voltage introduction and vacuum ionization prevention all-dimensional coating tool, and belongs to the technical field of vacuum coating. The tool is mainly composed of a track, a walking mechanism, a planetary workpiece disc assembly, a bias voltage wiring and leading-in mechanism and the like, and the core of the tool is that bias voltage output by a bias voltage power supply can be safely applied to a sample to be plated which is completely isolated from a grounded vacuum chamber in an atmospheric state. Through multiple insulation designs (such as an insulation sleeve and a ceramic bearing), reliable insulation between key components such as a planetary workpiece disc, a fixed rod and a self-rotating rod and a cavity is realized, and vacuum ionization sparking is effectively prevented. The bias voltage is finally applied to the sample through a series of transmission of the bias voltage wiring assembly, the entering mechanism, the introducing autorotation rod mechanism and the like. The traveling mechanism enables the tool to enter and exit the cavity along the track, and bias connection can be automatically switched on and off along with the traveling mechanism. In addition, the planetary workpiece disc adopts a wear-resistant and high-temperature-resistant full-bead bearing steel thrust bearing, so that the height of revolution and rotation parts is reduced, and the utilization rate of a coating space is improved. The coating quality and the automation degree are improved, and high reliability and large load capacity are achieved.

This invention discloses a corrosion-resistant circulating pump with a quick-change seal structure, comprising a base, a pump housing, a motor, and an integrated sealing assembly connecting the pump housing and the motor. An impeller shaft is supported within the pump housing by a ceramic bearing. One end of the impeller shaft is fixed to the impeller, and the other end has a first connecting portion. The integrated sealing assembly includes a sealing housing, an intermediate drive shaft passing through the sealing housing, and a mechanical seal installed between the two. One end of the intermediate drive shaft has a second connecting portion that inserts into the first connecting portion, and the other end is connected to the motor via a coupling. When the mechanical seal needs to be replaced, the integrated sealing assembly along with the intermediate drive shaft can be pulled out as a whole, separating the second connecting portion from the first connecting portion. This invention achieves rapid replacement of the entire sealing assembly. During the replacement process, the impeller shaft and impeller remain stationary, eliminating the need for realignment, significantly shortening maintenance time and improving repair efficiency.

The invention relates to the technical field of dismounting tools, in particular to a ceramic bearing dismounting device which comprises a first clamping assembly and a second clamping assembly. The second clamping assembly can move relative to the first clamping assembly in the axial direction of the main shaft; the second clamping assembly comprises a fixing base, a first clamping jaw, a second clamping jaw, a first connecting rod, a second connecting rod and a driving mechanism. The first connecting rod and the second connecting rod are rotationally connected with the fixing base, the two ends of the first connecting rod are connected with the first clamping jaw and the driving mechanism correspondingly, and the two ends of the second connecting rod are connected with the second clamping jaw and the driving mechanism correspondingly. When the driving mechanism drives the first connecting rod and the second connecting rod to rotate, the first clamping jaw and the second clamping jaw are driven to move oppositely so as to clamp the ceramic bearing, or the first clamping jaw and the second clamping jaw are driven to move oppositely so as to loosen the ceramic bearing. Clamping grooves matched with the ceramic bearing are formed in the first clamping jaw and the second clamping jaw; and the displacement driving assembly is connected with the second clamping assembly. The device can reduce the damage risk when the ceramic bearing is disassembled.

The invention relates to the field of bearings, in particular to a light ceramic bearing and a manufacturing method thereof.The light ceramic bearing comprises an inner ring, an outer ring, a retainer and ceramic balls, the inner ring and the outer ring are both made of C / C-SiC ceramic materials, and the C / C-SiC ceramic materials comprise hyperbranched polycarbosilane, divinyl benzene, xylene, carbon fibers, phenolic resin and silicon powder; the C / C-SiC ceramic material has a skeleton network structure formed by carbon fibers and a SiC matrix wrapping fiber bundles of the skeleton network structure, the SiC matrix is obtained by reaction and conversion of hyperbranched polycarbosilane and silicon powder permeating into the skeleton network structure and carbon, and pores of the SiC matrix are filled with free carbon; the manufacturing method comprises the following steps: preparing the bearing ring from the hyperbranched polycarbosilane, the divinyl benzene, the xylene, the carbon fiber and the silicon powder, and assembling the bearing by a cold charging method. The inner ring and the outer ring are made of C / C-SiC ceramic composite materials, the ceramic balls are made of Si3N4 ceramic materials, the retainer is made of polytetrafluoroethylene materials, and a bearing structure with complementary performance is formed.

The impeller comprises a hub, a rear cover plate and a plurality of blades, the hub is coaxially arranged on the rear cover plate, and the blades are evenly distributed on the rear cover plate around the axis of the hub; the front ends of the blades are close to the axis of the hub, the rear ends of the blades are far away from the axis of the hub, the rear half sections of the blades are provided with flow guide wings, and the flow guide wings incline downwards in the rotating direction of the impeller. According to the embodiment of the utility model, the inclined flow guide wings are arranged on the blades, so that when the impeller rotates for air intake, an inclined outward resistance is generated to air sucked into the impeller, meanwhile, the air forms a counter-acting force opposite to the resistance to the flow guide wings, and the counter-acting forces of all the flow guide wings are superposed; therefore, force which can push the impeller inwards along the axial direction of the impeller is formed, so that the effect of reducing or offsetting the axial force borne by the motor main shaft is achieved, the abrasion of the ceramic bearing is reduced, and the service life of the bearing is prolonged.

This invention discloses a dual-function cage structure for ultra-high temperature, high-speed all-ceramic ball bearings, belonging to the field of all-ceramic bearing technology. The cage is made of silicon nitride, silicon carbide, or zirconium oxide and includes a guiding structure and a lubrication and protection structure. The guiding structure is an arc-shaped fitting pocket for high-precision guidance. The lubrication and protection structure consists of an annular lubrication storage cavity, a gradient aperture slow-release channel, and a capillary transport structure connected in sequence to form a synergistic lubrication system, which can suppress high-temperature volatilization, overcome centrifugal oil spillage, provide quantitative slow release, and ensure precise oil supply. This invention achieves dual-function coupling of guidance and lubrication, reducing the friction coefficient by ≥35% and increasing service life by ≥60%. It is suitable for ultra-high temperature, high-speed, and extreme operating conditions in aerospace, high-end equipment, and other fields, and has high engineering application value.

The invention discloses a cable plugging member, which comprises an insulating shell integrated with a plastic insulating member and a conductive core, the conductive core part located in the insulating shell is arranged to be a twisted section, and the twisted section forms movable push-pull on the two end parts of the conductive core through twisting. An insulating rod is fixedly connected to the insulating block on the twisted section, and the middle part of the insulating rod is assembled with a ceramic bearing on the plastic insulator. The beneficial effects of the invention are that the twisting section connected by the insulating rod and the insulating block is twisted by twisting the insulating rotating handle in the forward or reverse direction to form backward pulling of the two ends of the conductive core, and the two ends of the conductive core are automatically reset by means of the elastic reset of the twisting section after loosening, so that the effect of pushing and pulling the plugging elements at the two ends of the conductive core is achieved; according to the utility model, the compensation acting force can be applied to the plugging part, the firmness of the plugging part is ensured, the conduction can be conveniently cut off when the two ends of the cable plugging part are not pulled out, and the safety of the plugging operation is improved.

The utility model relates to the field of ceramic bearings, in particular to a ceramic bearing with a dust cover convenient to disassemble and assemble. The utility model relates to a ceramic bearing with a dust cover convenient to disassemble and assemble, which comprises a ceramic inner ring, a ceramic outer ring, a retainer arranged between the ceramic inner ring and the ceramic outer ring, a ceramic ball arranged between the ceramic inner ring and the ceramic outer ring, and a dust cover, an inner arc-shaped limiting groove is formed in the peripheral side surface of the inner ring groove of the ceramic inner ring; an outer ring groove is formed in the side face of the ceramic outer ring, and an outer arc-shaped limiting groove is formed in the circumferential side face of the outer ring groove of the ceramic outer ring. And the dustproof cover is detachably connected between the inner arc-shaped limiting groove of the ceramic inner ring and the outer arc-shaped limiting groove of the ceramic outer ring. The dustproof cover of the ceramic bearing can be quickly disassembled and assembled and is convenient to disassemble, assemble and maintain.

The invention discloses a ceramic bearing device for thin glass processing and a ceramic supporting strip preparation method, the ceramic bearing device for thin glass processing comprises a plurality of ceramic supporting strips and a supporting frame, the ceramic supporting strips are vertically arranged, and the plurality of ceramic supporting strips are arranged in parallel; the ceramic supporting strip comprises a continuous ceramic line, and the diameter of the ceramic line is 1-2 mm. The ceramic line is provided with a plurality of first arc-shaped ceramic line segments, every two adjacent first arc-shaped ceramic line segments are connected through a connecting part, and each connecting part comprises a horizontal ceramic line segment or a second arc-shaped ceramic line segment. The first arc-shaped ceramic line segment is of an arc-shaped structure; the arc-shaped ceramic line segment is of an arc-shaped structure; the ceramic support strip is prepared by integral forming; the prepared ultra-thin glass bearing device is resistant to acid and alkali corrosion and stable at high temperature, and the supporting strips used for bearing ultra-thin glass are integrally formed and long in service life.

The invention discloses a preparation method of a high-wear-resistance ceramic composite bearing. The preparation method comprises the following steps: S1, raw material gradient premixing preparation; s2, gradient green body forming and charging; s3, performing magnetic control SPS (spark plasma sintering) cooperative sintering; s4, activating the interface of the ceramic body; s5, preparing a / hydroxyapatite gradient transition layer; and S6, performing precise post-treatment and performance detection. The method solves the problems that the traditional ceramic bearing is difficult to meet the requirements of high-wear-resistance and high-stability harsh working conditions due to the fact that the inner and outer layers are homogenized due to homogenized mixing of the raw materials, the sintering compactness is insufficient, the coating is weak in binding force and easy to fall off due to simple interface treatment, and the post-treatment precision is low due to the fact that the coating cannot meet the requirements of high-wear-resistance and high-stability harsh working conditions.

The magnetic driver comprises an outer bearing seat, a machine frame and a bearing seat which are fixedly connected, a transmission shaft penetrates through the bearing seat and the machine frame, a full-ceramic bearing is arranged at the upper end in the bearing seat, a radial magnetic suspension bearing is arranged at the lower end in the bearing seat, a magnetic transmission part is arranged at the upper end of the transmission shaft, and a magnetic bearing is arranged at the lower end of the transmission shaft. The upper end of the bearing seat is provided with an inflow port, the lower end of the bearing seat is provided with an outflow port, the upper end in the bearing seat is provided with a cleaning fluid distributor, the cleaning fluid distributor is communicated with the inflow port, and a runner is arranged in the rack; through the combination of the full-ceramic bearing and the radial magnetic suspension bearing which are arranged inside and the circular arc transition design of the internal flow channel, no dead angle of the flow channel is realized, so that the cleaning and sterilization of the driver are effectively realized, the driver can adapt to special industries needing highly clean and sterile environments, and the service life of the driver is prolonged. And the practicability of the device is improved.

This utility model provides a magnetic levitation low-friction dual-hub device suitable for heavy-duty medical equipment, belonging to the technical field of hub devices. This magnetic levitation low-friction dual-hub device for heavy-duty medical equipment includes an outer load-bearing hub, an inner drive hub, radial ceramic bearings, and an axial magnetic levitation module. The outer load-bearing hub is sleeved on the outside of the inner drive hub. The radial ceramic bearings are disposed between the outer load-bearing hub and the inner drive hub, and are connected to the inner wall of the outer load-bearing hub and the outer wall of the inner drive hub, respectively. The axial magnetic levitation module is disposed at the end of the outer load-bearing hub away from the radial ceramic bearings, and is connected to the end of the outer load-bearing hub. This invention solves the problems of high friction coefficient, high movement resistance, heavy operating burden for medical personnel, and difficulty in meeting the frequent movement requirements of traditional heavy-duty medical equipment hub systems.

The utility model belongs to the technical field of water pumps, in particular to a bearing structure of a submersible pump for a well, which comprises a bearing seat and a ceramic shaft sleeve circumferentially fixed and sleeved on a rotating shaft, a ceramic bearing is rotatably sleeved outside the ceramic shaft sleeve, and an elastic sleeve fixedly mounted with the bearing seat is sleeved outside the ceramic bearing. The outer side wall of the ceramic bearing is an outer convex spherical surface, and the inner side wall of the elastic sleeve is an inner concave spherical surface matched with the outer convex spherical surface. According to the utility model, the coaxiality and perpendicularity of each ceramic bearing can be effectively ensured, the abrasion is effectively delayed, and the service life is prolonged.

The present invention provides a centrifugal separator (1) for separating at least one liquid phase from a liquid feed mixture The separator (1) comprises a rotatable portion (10), a stationary portion (2) and a drive motor (4) arranged for rotating the rotatable portion (10) relative said stationary portion (2) around an axis of rotation (X). The rotatable portion (10) comprises a centrifuge bowl (10a) and a rotatable shaft (7) onto which said centrifuge bowl (10) is mounted. The centrifuge bowl (10a) comprises a separation space (9a), in which surface enlarging inserts (17) are arranged, an inlet (11) for supply of the liquid feed mixture, at least one liquid outlet (12, 13) for discharge of a separated liquid phase. Further, at least one bearing (5, 6) is mounted to the rotatable portion (10) to facilitate its rotation, wherein said at least one bearing (5,6) comprises a plurality of ceramic bearing elements (51).

The utility model relates to a kind of ceramic shaft sleeve sealing protection structure on shaft, including high-speed shaft, bearing seat and lower bearing cover, annular baffle is formed oil seal mounting groove on the lower bearing cover upper end face, four fluorine oil seal is placed in oil seal mounting groove, ceramic shaft sleeve is installed between the oil seal lip of four fluorine oil seal and high-speed shaft, shaft sleeve positioning ring is equipped with on high-speed shaft by connecting piece, shaft sleeve positioning ring includes annular sleeve and splicing block, ceramic shaft sleeve is provided with clamping groove, the splicing block of shaft sleeve positioning ring is located in the clamping groove of ceramic bearing, four fluorine washer is provided between shaft shoulder and ceramic shaft sleeve.The utility model replaces ordinary rubber framework oil seal with better four fluorine oil seal of hardness and wear resistance to seal protection to bearing, and install ceramic shaft sleeve of hardness and smoothness excellent on shaft, solve the problem of needing to be plated with chromium to shaft when using four fluorine oil seal and serious heat generation, increase the service life of oil seal, improve the reliability of bearing protection, also reduce the machining difficulty of shaft plating with chromium.

The utility model relates to a tool clamp for a waterproof sleeve in an electronic shielding water pump. A base is arranged below a waterproof sleeve shell, an elastic expansion sleeve is arranged between the waterproof sleeve shell and the base, a ceramic bearing is arranged outside the elastic expansion sleeve in a sleeved mode, a pressing plate is arranged in the elastic expansion sleeve in a sleeved mode, a protruding centering shaft body is arranged on the base, and the pressing plate corresponds to the centering shaft body. A clamping assembly is arranged between the pressing plate and the centering shaft body, a bolt is arranged in the pressing plate in a penetrating mode, and a bolt hole matched with the bolt is formed in the top of the centering shaft body. During use, the waterproof sleeve shell and the ceramic bearing are subjected to integral injection molding to form the waterproof sleeve, then the elastic expansion sleeve is used for fixing and clamping the waterproof sleeve, clamping deformation is reduced, the clamping force can be further adjusted and controlled through matched stretching and retracting of the bolt and the elastic expansion sleeve, the coaxiality of the waterproof sleeve is accurately adjusted, and the waterproof sleeve is not prone to deformation. The coaxiality progress of the waterproof sleeve can be improved to IT7 level, the coaxiality of the waterproof sleeve is effectively corrected through the elastic expansion sleeve, the overall efficiency of the motor shaft is improved, and the service life of the motor shaft is prolonged.

The utility model relates to the technical field of ceramic bearing production, in particular to an appearance detection device for a ceramic bearing. The appearance detection device for the ceramic bearing comprises a first blank pushing air cylinder, a first appearance shooting assembly, a first clamping assembly, an ink soaking disc, a second clamping assembly, a second appearance shooting assembly and a second blank pushing air cylinder, then the first clamping assembly places the ceramic blank in the ink soaking disc for ink soaking treatment, then the ceramic blank is clamped by the second clamping assembly and input into the second appearance shooting assembly for appearance shooting, and finally the second blank pushing air cylinder takes the ceramic blank out of the second appearance shooting assembly. According to the appearance detection device for the ceramic bearing, the appearance detection can be effectively carried out on the sintered ceramic blank with high quality.

The invention relates to the technical field of bearing ball manufacturing, in particular to a silicon nitride ceramic bearing ball production process which comprises the following steps: pretreating raw materials, mixing silicon nitride powder with a sintering aid, adding absolute ethyl alcohol, and ball-milling into slurry; carrying out spray granulation, and controlling the temperature to obtain granulated particles with specific particle sizes; performing cold isostatic pressing, pressurizing and maintaining pressure to obtain a biscuit; degreasing treatment is conducted, and heating is conducted in the air atmosphere to remove impurities; sintering, heating and preserving heat in a nitrogen atmosphere, and then cooling; roughly grinding, and controlling the roundness by a diamond grinding wheel; fine-mesh grinding wheels are used for improving the precision; ultra-fine grinding is performed, and the finish degree is increased through grinding paste; cleaning and removing residual grinding materials; and detecting, and packaging after qualification. The bearing ball produced by the process is superhard, wear-resistant, high-temperature-resistant and electrically insulated, adapts to special working conditions such as high temperature and high speed, and meets the requirements of multiple fields.

The utility model provides an underwater brushless motor. The underwater brushless motor comprises a stator assembly and a rotor assembly. The motor is characterized in that the stator assembly comprises a shell and a stator winding arranged on the inner side of the shell, and sealant wrapping the stator winding in a sealed mode is arranged in the shell; the rotor assembly comprises a rotor cylinder and a magnetic ring arranged on the side wall of the rotor cylinder in a sealed mode. A plurality of integrally formed paddles are arranged on the inner side of the rotor cylinder; at least two ceramic bearings are connected between the stator assembly and the rotor assembly, and the rotor assembly is rotatably connected with the stator assembly through the ceramic bearings. The motor adopts a non-central-spindle and non-support design, and the blades and the rotor cylinder are directly integrally formed, so that water flow and sundries can freely pass through the interior of the motor and are not easily wound by foreign matters such as silk threads, motor faults caused by jamming are reduced, and the system stability is improved.

The invention discloses a ceramic bearing wide temperature range fatigue life test system for an aviation main shaft system, and the system comprises the following modules: a crack initial induction module which is used for forming a crack initial induction region; the multi-physical field loading module is used for acquiring crack behavior response data; the crack identification module is used for identifying the crack direction change and extracting a crack turning path section; the crack migration induction module is used for obtaining crack migration path information; the crack trend prediction module is used for outputting a crack propagation trend and a failure estimation period by improving a RetNet model and combining a disturbance sensitive direction difference weighting mechanism and a jump residual aggregation mechanism; the loading control module is used for recording a complete crack behavior sequence and a damage time point; and the life evaluation module is used for outputting a fatigue life test result according to the loading cycle number corresponding to the damage time point. According to the method, crack evolution modeling and RetNet model improvement are fused, and the wide-temperature-range fatigue life test of the ceramic bearing is realized.

The invention relates to the technical field of ceramic bearings, in particular to a detection system for a friction-wear test of a ceramic joint bearing. The detection system comprises a heating box, a supporting device and a detection device, the supporting device comprises a rotating shaft, a bearing seat, a ceramic spacer ring and an expansion ring, the rotating shaft is horizontally arranged in the heating box and rotates along the axis of the rotating shaft, and the ceramic joint bearing, the bearing seat and the ceramic spacer ring are arranged on the rotating shaft in a sleeving mode; and the expansion ring sleeves the outer side of the outer ring of the knuckle bearing and is positioned in the seat body of the bearing seat. When the temperature rises, the rotating shaft expands and then is in interference fit with the inner ring, and the end cover of the bearing seat extends to press the outer ring, the self-adaptive clamping force driven by heat compensates the gap possibly generated due to the thermal expansion difference of materials, and it is ensured that the temperature of the ceramic joint bearing can be accurately measured in the whole testing process from normal temperature to high temperature. And the inner ring and the outer ring can be in a stable and non-loose clamping state, so that the accuracy and the reliability of wear test data of the ceramic joint bearing at high temperature are improved.

The utility model relates to the technical field of ceramic bearings, in particular to a ceramic bearing with a heat dissipation structure. The ceramic bearing with the heat dissipation structure comprises a ceramic outer ring, a ceramic inner ring and a plurality of ceramic balls arranged between the ceramic outer ring and the ceramic inner ring, wherein a retainer is arranged between the ceramic outer ring and the ceramic inner ring; the ceramic balls are arranged on the retainer and are rotationally connected between the ceramic outer ring and the ceramic inner ring; heat dissipation holes are formed in the retainer; the holder is connected with fan blades, and the fan blades are located in the heat dissipation holes of the holder. Under the action of the fan blades, air pressure difference is formed on the front and back surfaces of the ceramic bearing, air flow is accelerated to penetrate through the ceramic bearing, a good heat dissipation effect is achieved on the ceramic bearing, and damage to the ceramic bearing caused by heat accumulation due to friction is reduced.