Cage fits graphite rolling bearing
By covering the outer surface of the rollers in a rolling bearing with a graphite layer, the problem of damage to the rolling elements after the lubricating oil is used up is solved, emergency lubrication is achieved, and the service life of the bearing is extended.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI LIANYI BEARING TECH CO LTD
- Filing Date
- 2025-10-13
- Publication Date
- 2026-07-03
AI Technical Summary
Existing rolling bearings are prone to damage to the rolling elements after the lubricating oil is used up, which affects their service life.
A graphite layer is applied to the outer surface of the rollers to serve as an emergency lubricant and prevent the rolling elements from seizing.
The graphite layer provides extremely low friction and good anti-sticking properties, ensuring that the bearing can continue to operate for a period of time after the lubricant is used up, thus avoiding damage.
Smart Images

Figure CN224453421U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rolling bearings, and more particularly to rolling bearings with graphite attached to the cage. Background Technology
[0002] Rolling bearings are core mechanical components that support rotating shafts, bear loads, and reduce friction through rolling friction. Their basic structure includes an inner ring, an outer ring, rolling elements, and a cage. Rolling bearings have the advantages of low friction, high efficiency, and high standardization, and are widely used in almost all rotating machinery fields such as automobiles, home appliances, and industrial motors. Their performance directly determines the reliability and lifespan of mechanical equipment.
[0003] Existing rolling bearings require frequent lubrication of the rolling elements to ensure good lubrication. However, the lubricant may run out during prolonged operation. Continuing to use the bearing after the lubricant has run out may damage the rolling elements, thus affecting the bearing's performance.
[0004] Therefore, those skilled in the art have provided rolling bearings with a cage fitted with graphite to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a rolling bearing with a cage fitted with graphite, where the graphite layer on the outer surface of the rollers can also serve as an emergency lubrication layer in emergency situations.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a rolling bearing with a cage fitted with graphite, including an inner ring, wherein a mounting base is fixedly disposed on the outer surface of the inner ring, and the mounting base has multiple mounting holes on both its upper and lower end faces;
[0007] Rollers are rotatably disposed inside the multiple mounting holes, graphite layers are fixedly disposed on the outer surfaces of the multiple rollers, and outer rings are rotatably disposed on the outer surfaces of the multiple rollers.
[0008] Furthermore, the inner ring is made of high-carbon chromium bearing steel.
[0009] Furthermore, the mounting base is made of brass.
[0010] Furthermore, all of the rollers are made of high-carbon chromium bearing steel.
[0011] Furthermore, the outer ring is made of carburized bearing steel.
[0012] Furthermore, a groove is formed on the inner surface of the outer ring.
[0013] This utility model has the following beneficial effects:
[0014] 1. The rolling bearing with a cage fitted with graphite proposed in this utility model has rollers as its most important structure during use. The rollers are the rolling elements of the entire bearing. During use, the outer surface of each roller is covered with a layer of graphite. The graphite layer itself has extremely low friction and good anti-sticking ability, so that the graphite layer can also serve as an emergency lubricant after the lubricating medium is used up, preventing the rollers from "seizing up". This allows the device to continue to operate for a period of time after the lubricating medium is used up, without directly seizing up and being damaged. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the main axial view of the present invention;
[0016] Figure 2 This is a top-view axonometric schematic diagram of the present invention;
[0017] Figure 3 This is a bottom-view axial side view of the present invention;
[0018] Figure 4 This is a top view of the present invention.
[0019] Legend:
[0020] 1. Inner ring; 2. Mounting base; 3. Roller; 4. Graphite layer; 5. Outer ring; 6. Mounting hole. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Reference Figure 1-4 This utility model provides an embodiment of a rolling bearing with a cage fitted with graphite, comprising an inner ring 1, a mounting base 2 fixedly disposed on the outer surface of the inner ring 1, multiple mounting holes 6 on both the upper and lower end faces of the mounting base 2, rollers 3 rotatably disposed inside the multiple mounting holes 6, a graphite layer 4 fixedly disposed on the outer surface of the multiple rollers 3, and an outer ring 5 rotatably disposed on the outer surface of the multiple rollers 3. The rolling bearing with a cage fitted with graphite of this utility model achieves efficient lubrication through the graphite layer.
[0023] Specifically, the main structure of the device during use is an inner ring 1. An annular mounting base 2 is fixed to the outer surface of the inner ring 1. The upper and lower end faces of the mounting base 2 are provided with evenly distributed mounting holes 6. These mounting holes 6 serve as mounting spaces for the rollers 3, allowing the rollers 3 to move between the upper and lower end faces of the mounting base 2. The rollers 3 are the rolling elements of the entire structure. During use, the outer surface of each roller 3 is covered with a graphite layer 4. The graphite layer 4 itself has extremely low friction and good anti-sticking ability, allowing the rollers 3 to also serve as an emergency lubricant after the lubricating medium is used up, preventing the rollers 3 from "seizing up." During use, an outer ring 5 is set outside the rollers 3, allowing the rollers 3 to move within the outer ring 5, ensuring the normal operation of the entire device.
[0024] Reference Figure 1-4 The inner ring 1 is made of high carbon chromium bearing steel, the mounting base 2 is made of brass, the multiple rollers 3 are all made of high carbon chromium bearing steel, the outer ring 5 is made of carburized bearing steel, and the inner surface of the outer ring 5 is provided with a sliding groove.
[0025] Specifically, the inner ring 1, as the rotating core of the bearing, is made of high-carbon chromium bearing steel. High-carbon chromium bearing steel is known for its high hardness, excellent wear resistance, and outstanding contact fatigue strength, making the inner ring 1 more durable. The mounting base 2 is made of brass, which has the advantages of high strength, good self-lubrication, and fatigue resistance, reducing the possibility of "seizing" with the rollers 3 during use. The outer ring 5 has a groove on its inner surface during use, which can contact the rollers 3 and provide a precise movement trajectory for the rollers 3, preventing the rollers 3 from deviating during movement. The outer ring 5 is made of carburized bearing steel, giving the surface of the outer ring 5 high hardness and wear resistance, while the interior maintains good toughness and impact resistance. This characteristic of being hard on the outside and tough on the inside allows the bearing to better withstand the impacts and vibrations commonly encountered in textile machinery, making the entire bearing more durable.
[0026] Working principle: When the device is in use, the outer surface of the inner ring 1 is fixed with the mounting base 2. The mounting base 2 is made of brass, which has the advantages of high strength, good self-lubrication and fatigue resistance. During use, it will reduce the phenomenon of "seizing" with the roller 3. The upper and lower end faces of the mounting base 2 are provided with evenly distributed mounting holes 6. These mounting holes 6 can serve as the mounting space for the roller 3 during use, allowing the roller 3 to be mounted on the upper and lower end faces of the mounting base 2.
[0027] The roller 3 is the rolling element of the entire structure. During use, the outer surface of each roller 3 is covered with a graphite layer 4. The graphite layer 4 itself has extremely low friction and good anti-sticking ability, so that the graphite layer 4 can also be used as an emergency lubricating medium after the lubricating medium is used up to prevent the roller 3 from being "seized". This allows the device to continue to run for a period of time after the lubricating medium is used up, without directly seizing and causing damage.
[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. Rolling bearing with raceway coated with graphite, comprising an inner ring (1), characterized in that: The inner ring (1) is fixedly provided with a mounting base (2) on its outer surface, and the mounting base (2) has multiple mounting holes (6) on its upper and lower end faces. Rollers (3) are rotatably disposed inside the multiple mounting holes (6), graphite layers (4) are fixedly disposed on the outer surfaces of the multiple rollers (3), and outer rings (5) are rotatably disposed on the outer surfaces of the multiple rollers (3).
2. The rolling bearing according to claim 1, wherein the cage is coated with graphite. The inner ring (1) is made of high carbon chromium bearing steel.
3. The rolling bearing according to claim 1, wherein the cage is coated with graphite. The mounting base (2) is made of brass.
4. The rolling bearing according to claim 1, wherein the cage is coated with graphite. The rollers (3) are all made of high carbon chromium bearing steel.
5. The rolling bearing according to claim 1, characterized in that the cage is coated with graphite. The outer ring (5) is made of carburized bearing steel.
6. The rolling bearing according to claim 1, characterized in that the cage is coated with graphite. The inner surface of the outer ring (5) is provided with a groove.