Cylindrical roller bearings are characterized by the contact between cylindrical rollers and the raceways, allowing them to withstand heavy radial loads and impact loads. They are suitable for high-speed rotation as well.
The N-type and NU-type bearings can accommodate axial movement, adapting to changes in the relative position between the shaft and the housing caused by thermal expansion or installation errors. They are particularly suitable for use as free-end bearings.( Examples include NU220M, NU409M, NU318EM, NU2310EM.)
The NJ-type and NF-type bearings can withstand certain degrees of unidirectional axial loads. (Examples include NJ236M, NJ309EM, NJ409M, NF316M.)
The NUP-type bearings can withstand certain degrees of bidirectional axial loads. The inner or outer ring can be separated, facilitating installation and removal. Examples include(NUP2305EM, NUP212M, NUP2208EM, NUP1064M.)
The NNU-type and NN-type bearings have high rigidity against radial loads and are mostly used in machine tool spindles. (Examples include NNU4092/W33, NN3012, NNP4088X3/HCC3W33, NN3019K/P5W33, NN3036K/P51W33.)
The FC, FCD, and FCDP types can withstand large radial loads and are mainly used on rolling mill rolls.( Examples include FC3652168, FCD84120440/C4, FCDP120164575/HCRG2P6YA6, FCDP130180650/HCRG2P6.)
These types of bearings are primarily used in medium and large electric motors, generators, internal combustion engines, gas turbines, machine tool spindles, reduction gears, and various industrial machinery.
Single-row cylindrical roller bearings:
NU and N types allow axial movement of the shaft relative to the housing within a certain range, making them suitable for use as free-end bearings.
NJ and NF types can withstand certain degrees of unidirectional axial loads. NUP and NFP types can accommodate axial movement in both directions, making them suitable for use as free-end bearings.
Double-row cylindrical roller bearings:
Double-row cylindrical roller bearings come in cylindrical bore and tapered bore variations. There are also bearings with outer rings featuring oil holes and oil grooves. These bearings are mostly used in machine tool spindles but can also be used in other applications.
Four-row cylindrical roller bearings:
Four-row cylindrical roller bearings can withstand large radial loads and impact loads, have high machining precision, and are suitable for high-speed operation.
They are commonly used on rolling mill rolls but can also be used in other applications.

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