Original imported INA bearings, F-23212. NKIA (rodless) model

Original imported INA bearings, F-23212. NKIA (rodless) model

Brand: INA

model:F-23212.NKIA

1、 Brand Overview

As early as 1946, George? Dr. Georg Schaeffler and his brother Wilhelm co founded Schaeffler Corporation and demonstrated the significance of breaking through thinking frameworks in 1949. At that time, his research and development of needle roller and cage components led to a major breakthrough in the application of needle roller bearings in the industrial field, filling the gap in this field. George? Schaeffler's innovative spirit and desire for success have become an eternal part of INA's corporate culture in 35 factories worldwide. For decades, INA has represented creative solutions, professional standards in design and production, and great attention to customer requirements. Breaking free from the constraints of thinking patterns, breaking through the obstacles of traditional habits, and finding new ways, whether from the beginning of a company's establishment or decades later today, are all the essence of corporate culture.

INA: is a well-known bearing brand in Germany, belonging to the German INA Bearing Company under the Schaeffler Group. It was founded in 1946 and is headquartered in Nuremberg, Germany. Since its establishment, INA Bearing Company in Germany has been committed to product innovation to meet customer needs and provide high-quality assurance, making it the world's leading supplier of rolling bearings and a recognized partner for automotive manufacturers. Bearings are an important component in contemporary mechanical equipment. Its main function is to support mechanical rotating bodies, reduce their friction coefficient during motion, and ensure their rotational accuracy. According to the different friction properties of moving components, bearings can be divided into two categories: rolling bearings and sliding bearings. Rolling bearings have been standardized and serialized, but compared to sliding bearings, they have larger radial dimensions, vibration, and noise, and are also more expensive. The INA brand is widely used in the automotive industry, including engines, transmissions, and chassis, as well as in the industrial sector. INA has unparalleled technological advantages in precision product molding and provides customers with excellent cost-effective solutions based on this. In the industrial sector, four industry management departments respectively guide the market promotion of INA and FAG brands in the fields of production machinery, power transmission and railway, heavy industry, and consumer products.

INA? Is it a brand of clothing? A type of furniture? No, no, neither. The INA I'm referring to is a high-precision mechanical component - a bearing brand. INA develops and produces rolling bearings, sliding bearings, linear motion products, and automotive engine components worldwide. As a partner in research and development, INA has been closely collaborating with customers since the initial stages of system development. New solutions tailored to users are born every day, which means that over 1000 new products are launched into the market every year. INA has invested heavily in its research and development department, with a particular focus on the construction of new research and development centers in Germany, Asia, and North America recently.

2、 Product Introduction

In order to ensure the normal operation of the cardboard printing machine, daily maintenance and upkeep of F-23212 NKIA (rodless) bearings are essential and necessary. The daily maintenance and upkeep of printing machines is an important task in printing equipment management. The static maintenance of a cardboard printing machine refers to the maintenance of the machine when it is in a stationary state. Printing machine maintenance is divided into daily maintenance, weekly maintenance, monthly maintenance, quarterly maintenance, annual maintenance, etc. Among them, daily maintenance is done every day, and the purpose of maintenance is to extend the service life of the equipment and indirectly save the company's operating costs. At the same time, maintenance and upkeep of some printing equipment can also help prevent production accidents. An equipment that is not regularly maintained can easily cause major production accidents due to damage to local parts.

Definition of bearings:
A bearing is a component that supports a shaft, which can guide the rotation of the shaft and also withstand the idle parts on the shaft. The concept of a bearing is very broad. The component that supports the axis of relative rotation is called a bearing. Usually, it is axis rotation. There are also cases where the shaft does not rotate but the housing rotates, such as car wheel hub bearings. Bearings are the foundation of all machines and an indispensable product in modern society; Known as the "grain of the machinery industry", it ensures the quality of all supplied products and the normal operation of equipment. Tongqi Bearing specializes in providing services for industrial production and automotive maintenance; Specializing in imported brands, gathering classic bearings from various countries, consolidating the comprehensive strength of each brand, and continuously providing technical services to users and distributors; Assist customers in solving difficult problems such as bearing selection, domestic and foreign brand exchange, and model specification substitution; In the market economy of the new century, helping enterprises reduce costs, provide economic benefits, and ensure worry free operation of equipment.

3、 Product parameters

Brand: INA Model: F-23212. NKIA Old model: F-23212. NKIA (rodless)
Inner diameter: 12 (mm) Outer diameter: 24 (mm) Thickness: 16 (mm)
Retainer and its material: J steel plate stamping weight: 0.04 (kg) Usage: Other
Sample or in stock: In stock Rolling element type: Other Rolling element column number: Other

4、 Product physical picture

Model: F-23212. NKIA

Printing machine bearings are used for central positioning of plate cylinders, rubber cylinders, impression cylinders, and transfer cylinders. This means that bearings should meet a series of requirements as much as possible. The accuracy of roller bearing arrangement has a decisive impact on printing quality. The bearings of the printing machine must ensure that all cylinders can work together to the best extent during the printing process. There must be no relative motion in the radial and axial directions. Therefore, bearings must meet high requirements in terms of zero clearance, rigidity, and operational performance. Moreover, it must be possible to control the axial movement of the printing plate cylinder to achieve skew adjustment (diagonal alignment function).

5、 Product Details

Roland printing machine bearings are the most influential well-known brand in China after Heidelberg. Especially in the south, there is a wide user base. The impression left by Roland printing machine bearings is durability, high precision, and high degree of automation. Unlike Heidelberg machines, its split series printing machines have a drum diameter of 300mm and a completely non-contact double diameter drum structure for the paper transfer line. The ink roller on the plate adopts a movable mechanism (similar structures are also used by other manufacturers), which can eliminate ghosting. The embossing cylinder of Roland printing machine bearings adopts hollow roller bearings, which have a certain pre pressure during installation, so as to eliminate the bearing clearance during installation. Hollow roller bearings are considered an ideal bearing structure, but their machining is relatively difficult and the tolerance requirements are particularly strict. The version drum and rubber drum adopt sliding bearings (copper sleeve structure), which have strong impact resistance and high requirements for the oil circuit. If the oil circuit works poorly, it will cause excessive friction during high-speed operation.
Another characteristic of Roland printing machine bearings is the use of a long shaft to provide power. From the first group to the fourth group, a long shaft is used to drive the relevant mechanisms of each unit upwards. The advantage of this mechanism is that it can ensure synchronous operation of all units and reduce transmission errors between gears.
Roland printing machine bearings are also equipped with dual paper feeding mechanisms, which can be fed by roll paper or single sheet paper. When using the roll paper feeding method, the paper roll part and its slitting part of the roll paper can be fed into the feeding area. When using a single sheet paper feeder, simply remove this part. Roland printing machine bearings have been carefully considered in the structural design of Feida, using four paper separating suction nozzles and eight paper feeding suction nozzles, which have strong adaptability to thin and thick paper.
Roland printing machine bearings can complete post press operations such as hot stamping, embossing, die-cutting, and punching online, saving a lot of post press operation time. This is also the most integrated printing equipment in all printing machines. Roland printing machine bearings are also equipped with quality management systems such as online image monitoring, online color detection, and online quality control. These information can be connected to the network, allowing users to understand the quality status of their printed products. The maintenance and upkeep of Roland printing machine bearings are crucial, as issues often arise on the company's production lines. If not maintained in a timely manner, it will bring significant hidden dangers. So it is necessary to regularly maintain and upkeep Roland printing machines, and promptly repair any malfunctions that occur. For example, the repair of circuit board faults in Roland printing machines requires special attention.

Radial rigidity of tapered roller bearings:
Pre tensioned tapered roller bearings have slightly higher rigidity than pre tensioned cylindrical roller bearings. In fact, the difference is very small and can be ignored. In addition, tapered roller bearings have relatively high axial rigidity and can withstand overturning moments. But precisely because of its high tilting rigidity, it is necessary to pay attention to the very limited misalignment allowed by the drum shaft neck. Conical roller bearings are very suitable as positioning bearings in single sheet offset printing machines, for example. The DMF bearing unit has extremely high radial and axial rigidity. This is achieved through the combination of radial cylindrical roller bearings and bi-directional, zero clearance thrust needle roller bearings. Due to its high axial rigidity and extremely low axial runout, this bearing unit is particularly suitable for use in the transfer drum of single sheet offset printing machines.
Control pre tightening:
Pre tightening of bearings will increase the internal forces acting on the rolling elements. And thus exacerbate friction and temperature rise. Light preloading not only increases the rigidity of the bearing, but also slightly improves its fatigue life. However, if the optimal preload is exceeded, the rated life of the bearing will sharply decrease, and friction and temperature rise will significantly increase.

The main contents of dynamic maintenance for cardboard printing machines include:
1. Machine readiness status detection. The preparation status of the machine can be checked by jogging or turning. Other items such as tools are stuck inside the machine; Is the installation position of the printing plate suitable? If it is not suitable, it may cause damage to the printing plate or bring great difficulties to finding the rules; Is the installation of the rubber blanket suitable? If it is not suitable, it may cause printing failures, and in severe cases, it may damage the rubber blanket or machine.
2. Lubrication status of the machine. Firstly, you can observe whether the oil circuit of the machine is unobstructed through the oil gauge. If there is no oil on the oil gauge or the oil gauge cannot be observed clearly, you should stop the machine urgently and carefully check whether there is any oil leakage in the oil circuit. Although oil leakage from the machine is easy to observe, it is difficult to find the cause. For machines that use sliding bearings, low speed is not conducive to lubrication, especially for jog or low-speed operation, which has a significant impact on lubrication. Therefore, before performing such operations, it is best to idle the machine and lubricate it with oil, which is also a primary task that should be done before starting work. Some machines' oil pumps are driven by the main engine, so when they reverse, the oil circuit not only cannot refuel, but will also suck the oil back into the tank, which is very dangerous. Therefore, reverse should be avoided. The lubrication of some important parts can also be detected by the temperature of the nearby metal. If the temperature is too high, it indicates that there is a problem with the lubrication.
3. Impact during machine operation. The smaller the impact during machine operation, the more beneficial it is for printing, and it can also extend the service life of the machine. Reducing printing pressure (broadly defined as pressure) is an important condition for ensuring smooth machine operation. The smaller the printing pressure, the better, while ensuring the quality of the printed material. Reducing machine speed is another important condition for reducing the moment of inertia of a machine. The lower the speed of the machine, the smaller its moment of inertia. Therefore, the machine should not be kept running at high speed all the time. The above aspects are only part of the daily maintenance and upkeep of the printing machine. The quality of daily maintenance and upkeep of the printing machine directly affects its service life and product quality, so it cannot be taken lightly.
The maintenance materials for cardboard printing machines and related equipment include lubricating oils such as snow oil, sprocket oil, pressure resistant gearbox oil, etc.
Cleaning agents - such as post cleaning agents, ink roller cleaning agents, oil pipe and oil circuit cleaning agents, etc.
Rust inhibitor - used for rust prevention and lubrication of the tabletop and cutting blades of paper cutters.

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