ZENEO Cylindrical roller bearings

Different structures. Different bearing structure design is also reflected in the position of ribs. Which are commonly used cylindrical roller bearings have the following forms:
Single row cylindrical roller bearings: single row cylindrical roller bearings are separable bearings, easy installation and removal, two rings can be a tight fit, the contact line between the rollers and raceways correction can be reduced stress concentration.
Double row cylindrical roller bearings: double row cylindrical roller bearings are swimming bearings, the separability makes installation and removal easy. Two rings can be a tight fit. Double row cylindrical roller bearings almost not allowed to have an inclination angle.
Single bearing
Single row cylindrical roller bearings
Single row cylindrical roller bearings
N, NU type
N-type bearing outer ring without ribs, on both sides of the inner ring has a rib. It can allow the shaft relative axial displacement in both directions between the housings. NU type bearings on both sides of the outer ring ribs, no inner wall. It can also allow the shaft relative displacement in both directions between the axial bearing. Therefore, the class structure is suitable for use as a swimming end bearings.
NJ, NF type
NJ-type bearing outer ring on both sides have ribs, the inner wall of unilateral there. It can withstand a certain amount of axial load. NF-type outer unilateral have ribs, on both sides of the inner ring has a wall. It can withstand a certain amount of axial load. Therefore, the class structure is suitable for use as a one-way axial positioning bearing.
NUP, NFP type
NUP type bearing wall on both sides of the outer ring, the inner side of the band (fixed) single-wall, while the other side is detachable flat rings. It can withstand a certain amount of axial load.
NFP type of bearing outer side of the belt (fixed) single-wall, while the other side is detachable flat ring, both sides of the inner ring wall. Also can withstand a certain amount of axial load. Class structure bearings can limit the shaft relative to the housing axial displacement in both directions. Thus, suitable as a fixed end bearings.
NH (NJ + HJ) type
NH-bearing structure bearing NJ with HJ thrust collar the combined type. Since NUP type bearing inner ring is shorter, plus the flat ring is not fixed, inconvenient to use, and can use NH-bearing NJ-type bearing the entire width of the inner ring, keeping a closer fit with the shaft. And NH-bearing during installation and removal easier.
NH-type bearings can limit the shaft relative to the housing axial displacement in both directions. Thus, suitable as a fixed end bearings.
Double row bearings
Double row cylindrical roller bearings
Double row cylindrical roller bearings
Double row cylindrical roller bearings has two structural cylindrical bore and conical bore (bearing post code plus K). This kind of bearing has a compact, rigid, large carrying capacity, deformation, etc. After that load, especially for machine tool spindle bearing. Tapered bore can also play the role of micro-adjusted clearance and positioning device can be simplified structure, easy installation and removal. Commonly used double row cylindrical roller bearings under the following forms: [1]
NN, NNU type
NN-bearing outer ring without ribs on both sides of the inner wall has a wall in the middle. It can allow the shaft between the bearing relative axial displacement produce two directions.
NNU type bearings on both sides of the outer ring has a wall in the middle ribs, no inner wall. It can allow the shaft between the bearing relative axial displacement produce two directions. Therefore, such a structure suitable for swimming end bearings. This type of bearing retainer multi-use vehicle solid cage.
NNF type

NNF bearings are double row full complement cylindrical roller bearings, the outer wall consists of a band, there are two types of double-wall inner ring structure. Roller guided by the inner ring wall, two inner fastening ring together. In addition to the structure can withstand large radial loads and axial loads, but also can withstand the overturning moment, therefore, often used as a fixed end bearings.
NNF bearing type contact seals on both sides. Bearing filled with grease, grease operating temperature of -50 ℃ to + 110 ℃, but due to restrictions by the sealing material, bearing operating temperature is limited to between -40 ℃ to + 80 ℃. In the case of the use of better working conditions, NNF bearings with sealed without the need for maintenance, if bearing a long period of moisture or pollution of the environment, and is in high-speed operation, through the oil tank and lubrication holes on the outer ring of the bearing relubrication.
Four bearing
Four cylindrical roller bearings
Four cylindrical roller bearings
Four row cylindrical roller bearings are mainly used cold, the hot rolling mill, billet rolling mill and other machinery, bearings for the separation structure, bearing rings and rolling element can be easily separated, so that the bearing cleaning, checking, or disassembly are very easy to install.
FC type
FC bearing consists of two outer and an inner composition, both sides of each outer wall in the middle of the wall there, no inner wall.
FCD type
FCD-bearing is actually a combination of two NN type bearings made.
FC type and FCD-bearing allows the shaft between the bearing relative axial displacement produce two directions. Therefore, such a structure suitable for swimming end bearings. This type of bearing retainer multi-use vehicle system entities 13:58.