Four Row Taper Roller Bearing

KOMEL’s high-quality Four Row Taper Roller Bearing consist of an outer ring, four inner rings, four rollers, and a cage. The outer ring typically contains four wires, while the inner ring is connected to the appropriate wires to form a winding. Often, there are spacer rings between adjacent rings to provide clearance and load transfer. The purpose of the machine is to distribute the material evenly, the rollers did not rub and rub against each other, creating a smooth operation. Typical containers consist of sealed metal tubes and rigid pipes. Rigid systems are typically used for large diameter or high load bearings. These four-row cables have high carrying capacity, high strength, strong insulation, and good torsional stability. It is widely used in the iron and steel industry, mining equipment, cement plants, paper mills and large ships.

Parameter (Specification)

Suffixes

· E: Reinforced design, which generally means that the dimensions of the bearing's rollers and raceways are increased to improve the bearing's load - carrying capacity. For example, in some heavy - load application scenarios, using reinforced tapered roller bearings can better withstand large radial and axial loads.

· J: The inner ring is equipped with oil holes and oil grooves for lubrication. This design facilitates the injection of lubricating oil into the bearing, ensuring good lubrication during high - speed or heavy - load operation and reducing wear and heat generation.

· JR: The outer ring is equipped with oil holes and oil grooves, also aiming to improve the bearing's lubrication conditions.

· N: The outer ring has a snap - groove for installing a snap - ring, which can achieve axial positioning of the bearing and prevent the bearing from moving axially on the shaft.

· NR: The outer ring has a snap - groove and comes with a snap - ring. Compared with bearings with only a snap - groove, this configuration is more user - friendly. The axial positioning can be completed directly after installing the snap - ring.

· P2: The highest level of dimensional accuracy and rotational accuracy, suitable for application scenarios with extremely high precision requirements, such as the spindles of precision machine tools.

· P4: A high - precision class, with accuracy second only to the P2 class. It is commonly used in some high - speed and high - precision mechanical equipment, such as aero - engines and high - speed grinding machines.

· P5: A common high - precision class, which can meet the requirements of most industrial equipment with certain precision requirements, such as CNC machine tools and textile machinery.

· P6: The accuracy is lower than the P5 class but higher than the normal class (the normal class is indicated without a suffix). It can be used in machinery with general precision requirements, such as agricultural machinery and general machine tools.

· C1: The clearance is smaller than the normal clearance, suitable for occasions requiring high precision and low vibration, such as precision instruments and optical equipment.

· C2: The clearance is smaller than the normal clearance but larger than that of the C1 class. It is commonly used in some precision machinery with certain requirements for clearance.

· C0: Normal clearance, which is the most commonly used clearance class and is suitable for most mechanical equipment under general working conditions.

· C3: The clearance is larger than the normal clearance, commonly used in working conditions such as high temperature, high speed, and heavy load. In these cases, the bearing's clearance will decrease due to factors such as thermal expansion. A larger initial clearance can ensure that the bearing still has a proper clearance during operation.

· C4: The clearance is larger than that of the C3 class, suitable for special working conditions with higher temperature, higher speed, and heavier load.

· M: Solid copper alloy cage, which has good strength, wear resistance, and lubrication performance. It is suitable for high - speed, heavy - load, and high - temperature working environments.

· T: Synthetic resin cage, which is lightweight, has low noise, and good self - lubrication performance. It is commonly used in high - speed and low - noise application scenarios, such as power tools and household appliances.

· TN: Glass - fiber - reinforced nylon 66 cage, which has good strength and toughness and also has certain self - lubrication performance. It is widely used in many common industrial applications.

· W: Special materials, usually indicating that the bearing is made of special steel or other materials to meet specific working conditions, such as corrosion resistance and high - temperature resistance.

· G: Subjected to special heat treatment, which improves the bearing's hardness, wear resistance, and anti - fatigue performance. It is suitable for applications under harsh working conditions and heavy loads.

Application

Iron and steel metallurgy industry: It is widely used on the working rolls and backup rolls of rolling mills to withstand the huge rolling forces and axial forces generated during the rolling process, ensuring the stable operation of the rolls and the rolling accuracy.

Mining machinery: For heavy-duty components of equipment such as crushers and ball mills, four-row tapered roller bearings can withstand the strong impacts and loads generated during the crushing and grinding of ores, improving the reliability and service life of the equipment.

Cement machinery: In cement production equipment, such as in the supporting roller devices of rotary kilns, four-row tapered roller bearings play a crucial role in supporting and rotating, bearing the huge weight of the kiln body and the complex loads generated during operation.

Paper making machinery: In parts such as the press rolls and winding rolls of paper machines, bearings are required to withstand relatively large pressures and axial forces. Four-row tapered roller bearings can meet these requirements, ensuring the production quality of paper and the normal operation of the equipment.

Large ships: In the propulsion systems, steering gears and other equipment of ships, four-row tapered roller bearings are used for supporting and transmitting power, bearing various loads during the navigation of the ship, and ensuring the safe navigation of the ship.