Shaker Screen Spherical Roller Bearing

High quality Shaker Screen Spherical Roller Bearing produced by KOMEL Company adopt a double-row roller design, which can bear relatively large radial loads and also a certain amount of bidirectional axial loads, meeting the complex load requirements generated during the operation of vibrating screens.

Spherical Raceway: The outer ring raceway is spherical, and the inner ring has two raceways that are inclined at a certain angle relative to the bearing axis. This structure endows the Komel with excellent self-aligning performance, enabling it to automatically adapt to the shaft deflection or installation errors. Even if the screen box experiences significant deflection due to vibration, it can still ensure the normal operation among all components and compensate for the coaxiality error.

Cage: Usually, a machined brass cage is adopted and guided by the outer ring, which is suitable for the situation with eccentric loads. There are also cases where a stamped steel cage is used. After surface heat treatment and hardening, its wear resistance is improved. For large-sized spherical roller bearings for vibrating screens, the inner ring may have no rib, and the middle rib is on the outer raceway and is guided to rotate by the outer raceway.

Parameter (Specification)

Suffixes

Internal Design

BC: Bearings with a cast iron cage guided by the rollers, suitable for the main shafts of wind turbines.

CA/CAC: The inner ring has ribs on both sides, with a guide ring guided by the cage, and a machined brass cage.

CC(J)/CJ: The inner ring has no rib, with a guide ring guided by the cage, and two stamped steel cages.

CCJA/EJA: The inner ring has no rib, with a guide ring guided by the outer ring, and two stamped steel cages.

CAF: Similar to the CA type, but with a machined steel cage.

ECA/ECAC: Fork-shaped machined brass cage, the inner ring has ribs on both sides, with a guide ring guided by the inner ring and an enhanced roller set.

External Design (Seals, Snap Grooves, etc.)

-CS, -2CS: One side or both sides are equipped with contact NBR seals.

-CS2, -2CS2: One side or both sides are equipped with contact FKM seals.

-CS5, -2CS5: One side or both sides are equipped with contact HNBR seals.

-RS, -2RS: One side or both sides are equipped with contact NBR seals.

-RS5, -2RS5: One side or both sides are equipped with contact HNBR seals.

K: Tapered bore with a taper of 1:12.

K30: Tapered bore with a taper of 1:30.

Cage Design

F: Machined steel cage, guided by the inner ring.

FA: Machined steel cage, guided by the outer ring.

J: Stamped steel cage, guided by the inner ring.

JA: Stamped steel cage, guided by the outer ring.

MA: Machined brass cage, guided by the outer ring.

Material and Heat Treatment

235220: The inner ring is case-hardened, and the inner bore has a spiral groove.

HA3: The inner ring is case-hardened.

Precision, Clearance, Preload, and Quiet Operation

C08: The rotational accuracy meets the P5 tolerance grade.

C083: C08 + C3.

C084: C08 + C4.

C2: The radial internal clearance is smaller than the normal grade.

C3: The radial internal clearance is larger than the normal grade.

C4: The radial internal clearance is larger than C3.

C5: The radial internal clearance is larger than C4.

P5: The dimensional accuracy and rotational accuracy meet the P5 tolerance grade.

P6: The dimensional and rotational accuracy meet the P6 tolerance grade.

P62: P6 + C2.

Lubrication

GEM9: Filled with 70–100% of SKF LGHB 2 grease.

VT143: Filled with 25–45% of SKF LGEP 2 grease.

VT143C: Filled with 70–100% of SKF LGEP 2 grease.

W64: Solid oil.

W: The outer ring has no lubrication groove and lubrication holes.

W20: The outer ring has three lubrication holes.

W26: The inner ring has six lubrication holes.

W33: The outer ring has a lubrication groove and three lubrication holes.

W33X: The outer ring has a lubrication groove and six lubrication holes.

W77: Inserted W33 lubrication holes.

W513: W26 + W33.

Other Variants

R505: Bearings for railway axle boxes.

VA405: Bearings for vibrating machinery, with a case-hardened stamped steel cage.

VA406: Similar to VA405, but the inner bore of the cylindrical inner ring is coated with PTFE.

VA991: Bearings suitable for high-speed applications.

VE552(E): The outer ring on one side has three equidistant threaded holes for connecting lifting equipment. E indicates that the bearing is equipped with a lifting eye bolt.

VE553(E): Similar to VE552(E), but the outer ring on both sides has threaded holes.

VG114: Case-hardened stamped steel cage.

VQ424: The rotational accuracy is higher than C08.

Application

Mining Industry: In the process of mining and ore dressing, vibrating screens are used for operations such as preliminary screening, classification, and dewatering of the mined ores. Spherical roller bearings are applied to various types of vibrating screens, such as circular vibrating screens and linear vibrating screens. For example, in the iron ore dressing process, the vibrating screen needs to screen the crushed iron ore to remove impurities and ores of different particle sizes. At this time, the spherical roller bearings can withstand the impact force of the ores and the vibration load of the vibrating screen itself. Their self-aligning performance can also adapt to the slight deformation and deflection that the screen box may experience during long-term vibration, ensuring the stable operation of the screening work.

Coal Industry: In the coal washing and processing process, the vibrating screen is one of the key equipment. Spherical roller bearings are commonly used in parts such as the exciters and screen boxes of coal vibrating screens. In coal washing plants, the vibrating screen needs to classify and screen the coal to separate coal products of different particle sizes, and at the same time, carry out dewatering operations. The spherical roller bearings can effectively bear the weight of the coal and the complex loads generated during the vibration process, ensuring the efficient operation of the vibrating screen and improving the quality and production efficiency of coal washing.

Metallurgical Industry: In metallurgical production, vibrating screens are used for screening and classifying sintered ores, pellet ores, etc., as well as for the pretreatment of raw materials. Spherical roller bearings play an important role in metallurgical vibrating screens. For example, in the sintering workshop of a steel plant, the vibrating screen needs to screen the sintered ore to remove unqualified particles and impurities. The spherical roller bearings can adapt to the high-temperature and dusty working environment, withstand the high temperature of the sintered ore and relatively large impact loads, ensure the normal operation of the vibrating screen, and provide qualified raw materials for the subsequent ironmaking process.

Building Materials Industry: In the production process of building materials such as cement and sand and gravel, vibrating screens are used for screening and classifying materials. Spherical roller bearings are applied to the vibrating screens on the cement production line, such as the screening of raw materials like limestone and clay, as well as the classification and screening of cement products. In sand and gravel yards, vibrating screens are used to screen sand and gravel to separate sand and gravel products of different particle sizes to meet the different needs of construction projects. The spherical roller bearings can withstand the impact and vibration of materials such as sand and gravel, and their good self-aligning performance can compensate for the shaft deflection caused by equipment installation errors or during the working process, ensuring the stable operation of the vibrating screen.

Power Industry: In thermal power plants, vibrating screens are used for screening and removing impurities from coal to ensure the stability and efficiency of boiler combustion. The application of spherical roller bearings on the vibrating screens in power plants can bear the weight of the coal and the vibration load, adapt to the complex working environment of the power plant, ensure the reliable operation of the vibrating screen, and provide a guarantee for power generation production.

Environmental Protection Industry: In environmental protection fields such as waste treatment and sewage treatment, vibrating screens are used for screening and separating waste, sludge, etc. The application of spherical roller bearings on environmental protection vibrating screens can bear the complex loads brought about by the special properties of materials such as waste and sludge. At the same time, products with better sealing performance can also adapt to harsh environments such as humidity and corrosion, ensuring the normal operation of the vibrating screen and facilitating the smooth progress of the environmental protection treatment process.