Manufacturer supplied, F-223446. PWKRE model, part number 8091H508521

Manufacturer supplied, F-223446. PWKRE model, part number 8091H508521

Brand: INA

model:F-223446.PWKRE

Accessory Number:8091H508521

1、 Brand Overview
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.

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.

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.

2、 Product Introduction

F-223446. PWKRE bolt type curved roller is generally a fully loaded roller structure, and the bolt shaft raceway is quenched. To avoid stress concentration, the outer surface of the thick walled outer ring of the roller is curved. The outer ring has two integral ribs, which are guided axially by rollers. The bolt shaft head and the side retaining ring of the press fit provide axial support for the outer ring through rollers. Curved roller bearings are suitable for heavy radial loads. As the outer ring is guided axially by rollers, the bearing can also withstand heavy axial loads, allowing for relatively high-speed operation. However, as it is a fully loaded roller, it is necessary to regularly replenish lubricating grease. Lubricant can be added through the holes on both ends of the core shaft and the core shaft body.

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

model:F-223446.PWKRE

Accessory Number:8091H508521

Brand: INA Model: F-223446. PWKRE Processing Customization: No
Whether it is a standard part: non-standard part sample or in stock: in stock Whether it is imported: imported
Type: Other Uses: Other Materials: Other

4、 Product physical picture

model:F-223446.PWKRE

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

An important characteristic of printing machine bearings is their low friction torque and low operating temperature. Usually, the working temperature of bearings should not exceed+60 ° C to prevent adverse effects on the printing process.
Cylindrical roller bearings have low friction, which is beneficial for high-speed operation of printing machines.
The friction torque and temperature rise of bearings are influenced by the following important factors:
1. Bearing type
2. Bearing size
3. Speed
4. Load capacity
5. Bearing clearance
6. Lubrication
7. Application scenarios
8. Sealed.
Lubrication has a significant impact on the operating temperature of bearings. The use of special high-performance lubricating grease can greatly reduce the working temperature of bearings compared to oil lubrication.

When lubricating with grease, it is necessary to ensure that there is not too much grease in the bearing, especially for three ring and four ring cylindrical roller bearings. Otherwise, due to the increased stirring of lubricating grease, the temperature of the bearings in the high-speed offset printing press will inevitably be much higher during the first few hundred hours of operation. Therefore, it is necessary to carefully determine the amount of lubricating grease during initial lubrication and re lubrication based on the type of bearing.

Selection of lubricating grease for rolling bearings:

In printing machinery, two types of lubricating grease are preferred, as shown in the table.
For the main drum bearings, using lubricating grease MULTITOP can meet very high quality requirements. This is a universal grease used for ball and roller bearings, suitable for high-speed, heavy-duty, and low-temperature or high-temperature applications. It can ensure sufficient work performance and has the following characteristics:
1. Long working life
2. High operational reliability
3. Low friction.
For support type and bolt type rollers, the preferred lubricant is LOAD 150. This is a special grease used for ball, roller, and needle roller bearings, suitable for heavy loads, various speeds, and swinging movements.

The bolt type curved roller bearing F-223449.PWKR is divided into 6 series:

1) Basic NUKR series: Bolt axis curved roller NUKR series is a fully loaded double row cylindrical roller structure.
2) Eccentric sleeve NUKRE series: The bolt axis curved roller NUKRE series is similar to the NUKR series in that it is a fully loaded double row cylindrical roller structure, with the only difference being that the NUKRE series has an eccentric sleeve on the bolt axis.
3) Double raceway PWKR series: The bolt axis curved roller PWKR series is similar to the NUKR series, both of which are fully equipped with double row cylindrical roller structures. The only difference is that the outer ring of the PWKR is double raceway, and the two rows of rollers are separated.
4) NUKRA series with side rollers; The NUKRA series has a similar appearance to the NUKR series, but the difference is that NUKRA uses double headed bolts and adds a side roller at the end of the bolt shaft, resulting in a structural change. NUKRA is a single row fully loaded cylindrical roller structure. This structure is the first of its kind for Wuxi Wald Bearing and is currently applying for a patent.
5) KR series: The KR series curved roller bearing is a needle roller cage component bearing. The outer ring is guided axially through the retaining edge on the bolt and the retaining ring fixed on the bolt, which can withstand heavy loads and medium speeds. Due to the large amount of grease storage space inside the bearing, the lubrication cycle needs to be extended. KR is similar to NUKR, except that KR has retaining rings at both ends, while NUKR only has retaining rings at one end.
6) KRV series: The KRV series curved roller bearing is a fully loaded needle roller bearing, with the outer ring guided axially by the flange on the bolt and the retaining ring fixed on the bolt. It can withstand heavy loads but at lower speeds, but must be regularly lubricated. NUKR is similar to KRV, but the difference is that NUKR only has a retaining ring at one end, while KRV has retaining rings at both ends.

5、 Product Close up

Characteristics of supporting rollers:
A supporting roller is a single or double row bearing unit installed on a shaft or bolt. They consist of thicker outer rings with specific outer surface shapes, needle rollers, and cage components, or fully loaded needle rollers or cylindrical roller components. Supporting rollers can withstand high radial loads and axial forces caused by slight misalignment and skewed operation; This type of bearing is suitable for applications such as cam drive, bed track, and conveying equipment. This type of bearing comes with or without an inner ring, double-sided sealing, and open type. The PWTR series is designed for X-life. Due to material improvement and optimized contour, the basic rated life has been increased by 30%. The static and dynamic load-bearing capacity has also been improved. Meanwhile, due to the optimization of the outer contour of the roller and the improvement of surface quality, the stress on the supporting track has been reduced. Due to these measures, a very sturdy and durable bearing arrangement and extremely long service life can be achieved.
Outer surface contour of outer ring
The supporting roller with a crown shaped outer surface is widely used in practice to avoid edge stress caused by the inclination of the roller relative to the supporting track. The curvature radius of the outer surface is R=500 mm. For rollers NNTR.. -2ZL, the radius is shown in the size table. The exterior surfaces of the NATR. - PP, NATV. - PP, F-233282.01.NUTR, and PWTR. -2RS series have optimized INA contour shapes. Supporting rollers with this curvature profile
1. Hertz stress is low
2. The edge stress during inclined operation is relatively low
3. Reduced wear of the supporting track
4. Extend the service life of the supporting track.

INA rollers have significant advantages over traditional rollers due to their optimized contour surface. Regardless of tilt, the Hertz stress generated at the contact point is always lower than that of traditional rollers. This also reduces the wear of the mating track surface.
The economically efficient roller is precisely its technological advantage, bringing more convenience to mechanical operators. For example, in bottle factories, INA rollers occupy less space, wear less, and work reliably. Due to their large grease storage tanks and extremely effective seals, these rollers require almost no further lubrication. Users benefit from reduced maintenance costs and expenses as a result.
Improving existing products to enhance customer efficiency is one of Schaeffler's requirements for positioning itself as a technical partner for customers. Our goal in optimizing the support type and bolt type needle rollers is to significantly improve their operational reliability and longer service life. Our achievement: Wear resistant plastic retaining rings and sealing rings with optimized contours.
The high-tech concept enables us to provide suitable products even under extremely harsh working conditions, such as high humidity or exposure to water. Special Corrotect can be applied to the rollers during the production process ® Coating treatment. Or extremely high load-bearing capacity: roller with grease storage tank support, low friction operation, long maintenance cycle: roller LR52
You may also be interested in our other high-tech product, which is made of high-performance corrosion-resistant steel Cronitect ® Made rollers. Using ceramic ball rolling elements, this type of roller can withstand the harshest working conditions, whether lubricated or not. Compared with traditional corrosion-resistant bearing steel, the significantly enhanced corrosion resistance of this product brings considerable economic benefits to users.

If you are still troubled by the above issues, please feel free to consult us. We will find good solutions for you from various aspects. We will provide you with servo control systems and other peripheral services, and promise to install and debug each motor on-site. Give your choices the maximum appreciation potential! Our products are well-known imported transmission products from various countries such as Taiwan, Japan, Germany, and the United States to ensure that our product quality is leading in China. They are original and authentic, with excellent quality and affordable prices. This has been our commitment to customers for the past decade.