Solid grease is formed by injecting a polymer material into the bearing using a casting process. The polymer absorbs and retains saturated lubricating oil, forming small clearances around the rolling elements, cage, and raceways to allow free rotation. It effectively prevents lubricant leakage and ensures clean operation by keeping the lubricating oil sealed within the bearing. During operation, the bearing can utilize a large reservoir of lubricant, resulting in extended lubrication life.

High temperature bearings are specially designed rolling bearings for harsh operating conditions such as continuous high temperatures, intermittent high temperatures, and rapid thermal cycling. Through the use of specialized materials, heat treatment, lubrication, and structural design, they ensure stable operation even at temperatures where conventional bearings would fail. Manufactured from heat-resistant bearing steel, stainless steel, or high-temperature alloys, these bearings offer excellent high-temperature performance. They can operate reliably for extended periods in elevated temperatures without seizure, annealing, or loss of accuracy.

Mounted bearing units combine a rolling bearing with a housing into an integrated assembly. They are typically equipped with double-sided seals to protect against dust, water, and contaminants, ensuring reliable performance in harsh environments. These units are available in various structural designs with good versatility and interchangeability. They also offer a certain degree of self-aligning capability, making installation easy. The double sealing structure further enhances their suitability for demanding operating conditions.

Spherical plain bearings are based on a spherical sliding contact between the inner and outer rings. According to their design, they can be classified into radial, angular contact, thrust, and rod end spherical plain bearings. They offer high load-carrying capacity and excellent resistance to shock loads, along with features such as corrosion resistance, wear resistance, self-aligning capability, and good lubrication performance or maintenance-free operation with self-lubricating designs. These bearings are primarily used for low-speed oscillating or tilting movements and are well-suited for heavy-duty and alternating shock load applications.

Needle roller bearings are roller bearings with cylindrical rollers that are long and slender relative to their diameter, known as needle rollers. Despite their small cross-section, they offer high load-carrying capacity. With a compact radial structure and small outer diameter, they are particularly suitable for applications where radial installation space is limited. They feature an ultra-compact design with high space efficiency, high load capacity, high rigidity, lightweight construction, and excellent resistance to shock and wear.

Thrust roller bearings are primarily designed to support axial loads, while also accommodating combined radial loads; however, the radial load should not exceed 55% of the axial load. Compared with other thrust roller bearings, this type features a lower friction coefficient, higher operating speeds, and self-aligning capability. The rollers are long and large in diameter, with a high number of rollers, resulting in high load-carrying capacity. They are widely used in machine tool spindles, automotive transmission systems, construction machinery, the wind power industry, mining equipment, and industrial motors.

Spherical roller bearings incorporate two rows of rollers and primarily support radial loads, while also accommodating axial loads in either direction. They offer high radial load capacity and are particularly suitable for heavy-duty or vibration load applications, but are not suitable for purely axial loads. With excellent self-aligning capability, these bearings can support both radial and bidirectional axial loads. They provide high load-carrying capacity along with good resistance to shock loads.

Double row cylindrical roller bearings consist of an inner ring, an outer ring, two rows of parallel cylindrical rollers, and a cage. The rollers are in line contact with the raceways. These bearings are separable rolling bearings characterized by high radial load capacity and high rigidity, making them suitable for heavy-duty, high-precision, and medium- to high-speed applications. They offer advantages such as high load capacity, high rigidity, and low deformation. They are widely used in machine tool spindles, large electric motors, gear reducers, and similar applications.

Cylindrical roller bearings use cylindrical rollers as rolling elements and are classified as separable bearings. The rollers are in line contact with the raceways, providing high load-carrying capacity. The friction between the rolling elements and the ring flanges is low, making them suitable for high-speed operation, although high alignment accuracy is required in service. With optimized design, the line contact between rollers and raceways enables high load capacity, primarily for supporting radial loads, while also allowing high limiting speeds. These bearings can also accommodate a certain degree of axial load in one direction.

Four row tapered roller bearings offer extremely high load-carrying capacity and are widely used in key components of heavy machinery. Their performance is generally similar to that of double row tapered roller bearings; however, they can support higher radial loads, while their limiting speed is lower. They are mainly used in rolling mills in the steel and non-ferrous metal industries and are suitable for operation under extremely harsh conditions.

In double row tapered roller bearings, either the outer ring or the inner ring is integrated as a single piece. The two inner rings or outer rings are arranged with their small end faces facing each other, with a spacer positioned in between. The internal clearance is adjusted by the thickness of the spacer, which can also be used to set the bearing preload. These bearings are capable of supporting heavy radial loads as well as axial loads in both directions, while providing high rigidity. They are typically used in gearboxes, lifting equipment, rolling mills, and mining machinery, such as tunnel boring machines.

Tapered roller bearings offer high load-carrying capacity and high operating speeds. They are typically equipped with pressed steel window-type cages, which promote effective lubrication. As separable bearings, the outer ring and inner assembly are interchangeable, facilitating installation and maintenance. They also feature low friction torque during operation. These bearings are designed to accommodate combined loads, i.e., simultaneously acting radial and axial loads, while maintaining high load capacity and high-speed performance.

Thrust ball bearings are primarily designed to support axial loads. They feature a design capable of accommodating thrust loads at relatively high speeds and consist of washer-like raceways with ball rolling elements. Bearings with a spherical seating surface on the housing washer provide self-aligning capability, which helps reduce the effects of installation errors. Thrust ball bearings are not suitable for supporting radial loads and have relatively low limiting speeds.

Self-aligning ball bearings are available with cylindrical and tapered bores. The cage materials include steel sheet and synthetic resin. They are capable of supporting relatively high radial loads while also accommodating a certain amount of axial load. The outer ring raceway is spherical, providing self-aligning capability to compensate for misalignment and shaft deflection. Compared with other types of rolling bearings, self-aligning ball bearings generate lower friction, resulting in reduced temperature rise even at high speeds.

Four-point contact ball bearings are primarily designed to support pure axial loads or combined loads with axial load predominance. The larger the contact angle, the greater the bidirectional axial load-carrying capacity. They are capable of simultaneously supporting radial loads, bidirectional axial loads, and moment loads, and can operate stably at relatively high speeds. They are characterized by bidirectional load capacity, high operating speed, and excellent stability.

Double row angular contact ball bearings are designed to support combined loads, primarily radial loads, while also accommodating relatively high axial loads in both directions. Common contact angles are 30° and 40°; the larger the contact angle, the greater the bidirectional axial load capacity. They can simultaneously support radial and bidirectional axial loads and operate stably at medium to high speeds. With more uniform load distribution, they offer better impact resistance than single row angular contact ball bearings. In addition, they require less axial space and provide more stable running accuracy.