R196Z-4 Tapered Roller Bearing For Excavator / Construction Equipment

In the field of construction machinery, especially in the operation of equipment such as excavators, bearings, as key basic components, directly affect the stability, reliability, and service life of the equipment. The R196Z-4 bearing is specially designed to meet the harsh working conditions of heavy machinery like excavators, and has emerged prominently in the industry with its excellent characteristics.

1. Inner Diameter: The inner diameter of 196.85mm is meticulously calculated and designed to achieve precise adaptation with the shaft diameter of relevant components in the excavator. Whether in the traveling system, slewing mechanism, or other key power transmission shafts of the excavator, the inner diameter of the R196Z-4 bearing can ensure a tight fit with the shaft. During high-speed operation of the equipment and under huge torque and impact force, it effectively avoids relative sliding, guarantees stable and efficient power transmission, and lays a solid foundation for the smooth operation of the excavator.

2. Outer Diameter: The outer diameter of 241.3mm is designed to balance the installation compatibility with surrounding components and its own structural strength requirements. In the complex working environment of excavators, the equipment is subjected to complex stresses from multiple directions such as digging force, material impact force, and steering force. The larger outer diameter allows the R196Z-4 bearing to better disperse these loads, enhance the overall deformation resistance, and ensure that it maintains a good geometric shape and working state without excessive wear or deformation under harsh working conditions such as heavy loads and impacts, thereby maintaining the normal operation of the equipment.

3. Width: The width of 23.812mm is determined based on fully considering the axial load-carrying capacity of the bearing and the compactness of the equipment's spatial layout. Within the limited installation space, this width can not only ensure that the bearing has sufficient axial load-carrying capacity to effectively resist axial 窜动 of the shaft during operation and prevent equipment failures caused by axial displacement, but also not affect the reasonable layout and normal operation of other equipment components due to excessive size. It achieves efficient bearing of axial forces in a compact space and improves the overall structural rationality and operational stability of the equipment.

1. Bearing Steel Material: The main body of the R196Z-4 bearing is made of high-quality GCr15 chromium steel. GCr15 chromium steel has extremely high hardness, and after a special heat treatment process, its hardness can reach HRC60-65. This enables the bearing to effectively resist wear and greatly reduce the risk of surface damage when facing frequent impacts, friction, and other harsh working conditions during excavator operations. At the same time, this material has excellent fatigue resistance, and can maintain stable organizational structure and mechanical properties under long-term alternating load conditions, greatly extending the service life of the bearing, significantly reducing equipment downtime caused by bearing failures, and improving the efficiency and economy of equipment use.

2. Cage Material: The cage plays a key role in maintaining the stability of the movement of rolling elements (rollers) inside the bearing and guiding their correct operation, which has an important impact on the overall performance of the bearing. The cage of the R196Z-4 bearing can be made of high-strength steel or engineering plastics with self-lubricating properties. Steel cages, with their excellent strength and rigidity, can ensure that the rollers always stay on the correct movement track when subjected to large impact loads, and will not be dislocated or stuck even under extreme working conditions, thus ensuring the reliable operation of the bearing. Engineering plastic cages, on the other hand, have the advantages of light weight and good self-lubricating performance, which can effectively reduce friction resistance during bearing operation, reduce energy loss, and at the same time reduce operating noise, creating a more comfortable working environment for operators, and are suitable for working scenarios with high noise control requirements. Users can flexibly choose the appropriate cage material according to the actual working conditions and needs of the excavator.

1. Tapered Roller Bearing Structure: The R196Z-4 is a tapered roller bearing, and its unique structural design gives it strong load-carrying capacity. The design of tapered rollers enables the bearing to bear both large radial and axial loads. During the operation of the excavator, whether it is the huge radial digging force generated when digging materials or the axial force generated during steering, braking, and other operations, the R196Z-4 bearing can easily cope with them. The contact line between the roller and the raceway is a straight line, which can achieve a relatively uniform pressure distribution when bearing loads, effectively reducing local stress concentration, and further improving the bearing capacity and service life of the bearing.

2. Multi-Roller Layout: To further improve the load-carrying capacity, the R196Z-4 bearing adopts a multi-roller layout in its internal structure. Compared with some ordinary bearings of the same size, it has more tapered rollers arranged inside. Under the same working conditions, more rollers can disperse the borne load more evenly, reduce the pressure peak borne by each roller, thereby significantly increasing the upper limit of the bearing's load-carrying capacity. This multi-roller layout design enables the R196Z-4 bearing to operate stably and reliably in the heavy-load working environment of excavators, such as when digging hard rocks and moving large heavy objects, greatly reducing the risk of bearing damage due to overload, and providing strong support for the efficient operation of excavators.

1. High Load-Carrying Capacity: With its special tapered roller bearing structure and multi-roller layout, the R196Z-4 bearing shows strong load-carrying capacity. Relevant data shows that its dynamic load-carrying capacity can reach 154kN, and its static load-carrying capacity is as high as 315kN. Such excellent load-carrying performance enables it to easily cope with the huge loads generated by excavators under various complex working conditions. Whether it is continuous heavy-load operations or sudden impact loads, the R196Z-4 bearing can operate stably, ensuring the normal operation of various components of the excavator, effectively reducing equipment failures caused by insufficient bearing capacity, and extending the overall service life of the equipment.

2. Good Rotational Accuracy: During the manufacturing process, the R196Z-4 bearing adopts advanced processing technology and a strict quality control system to ensure high-precision manufacturing of the bearing. The processing accuracy of its inner and outer ring raceways and rollers is extremely high, and during operation, the rotational error can be controlled within a very small range. This not only ensures the smooth rotation of the bearing, reduces vibration and noise caused by unstable operation, but also improves the movement accuracy of relevant components of the excavator. For the digging operation of the excavator, bearings with high rotational accuracy can ensure the accuracy of digging actions, improve digging efficiency, reduce material waste and equipment loss caused by operational errors, and provide strong support for the refined operation of the excavator.

3. Long Service Life: Combining the above high-quality material selection, unique structural design, and excellent performance characteristics, the R196Z-4 bearing has an ultra-long service life. It can operate continuously and stably in harsh working environments such as high temperature, high pressure, and heavy dust, and withstand frequent impacts and vibrations. Under normal use and maintenance conditions, the service life of this bearing is significantly longer than that of ordinary bearings. This not only reduces the number of equipment maintenance and repair costs, reduces production losses caused by equipment downtime for maintenance, but also improves the economy of excavator use, bringing users a higher return on investment. For large-scale construction projects, the stable operation of equipment and low maintenance costs are of crucial significance for ensuring project progress and controlling project costs.

1. Excavator Traveling Mechanism: As one of the key components of the excavator, the traveling mechanism has extremely high requirements for bearing performance. The R196Z-4 bearing, with its strong load-carrying capacity, good rotational performance, and excellent impact and vibration resistance, has become an ideal choice for the excavator's traveling mechanism. Whether in flat construction sites, rugged mountainous areas, muddy wetlands, or other complex terrain conditions, this bearing can ensure the excavator travels smoothly and steers flexibly, providing reliable mobile support for digging operations. During traveling, it can effectively bear various loads generated by uneven ground, equipment weight, and acceleration and braking during driving, ensuring the reliable operation of the traveling mechanism and reducing the probability of failures in the traveling system.

2. Slewing Device: The slewing device of the excavator is responsible for realizing the 360-degree rotation of the working device and plays a core role in digging, loading, and unloading materials. The high precision and good load-carrying performance of the R196Z-4 bearing enable it to ensure the accuracy and stability of rotation in the slewing device. During slewing, it can bear radial and axial loads generated by digging force, material gravity, etc., avoiding inaccurate material loading and unloading or equipment collision accidents caused by slewing errors. At the same time, its long service life can meet the needs of long-term continuous operation of the slewing device, reducing downtime maintenance of the slewing device due to bearing failures and improving the operation efficiency of the excavator.

3. Other Construction Machinery Applications: In addition to its wide application in the excavator field, the R196Z-4 bearing is also suitable for other construction machinery with high requirements for bearing performance, such as loaders and bulldozers. In these equipment, the R196Z-4 bearing can also rely on its excellent performance to operate stably under harsh working conditions such as heavy loads and impacts, providing reliable guarantee for the normal operation of the equipment. For example, in the lifting and handling operations of loaders, the bearing needs to bear huge loads and frequent impacts, and the R196Z-4 bearing can effectively cope with these challenges, ensuring the efficient and stable operation of the loader.

The R196Z-4 bearing, with its precise dimensional specifications, durable manufacturing materials, unique and efficient structural design, excellent performance, and wide and diverse application scenarios, has become an important guarantee for the efficient and reliable operation of construction machinery, especially excavators. In future engineering construction, the R196Z-4 bearing will continue to play its advantages and contribute significantly to promoting the development of the construction machinery industry.