Cylindrical Roller Bearings

Cylindrical roller bearings are rolling bearings whose straight rollers make line contact with their raceways. They carry substantial radial load with high stiffness, and selected flange arrangements allow axial displacement between shaft and housing to accommodate thermal growth in motors, gearboxes and process machinery.

Key facts

Family: Bearings
Common types: Single-row NU, Single-row NJ, Single-row NUP, Double-row, Four-row, Full complement
Materials: Bearing steel, Case-hardened steel, Brass cage, Steel cage, Polyamide cage
Used in: Industrial gearboxes, Traction motors, Rolling mills, Compressors, Vibrating screens

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Types

Single-row NU
Single-row NJ
Single-row NUP
Double-row
Four-row
Full complement

Materials

Applications

Industrial gearboxes
Traction motors
Rolling mills
Compressors
Vibrating screens

What to send for a quote

bore, outside diameter and width
flange arrangement
internal clearance
cage construction
bearing designation

Questions about cylindrical roller bearings

What should I send to identify cylindrical roller bearings?

Send bore, outside diameter and width, flange arrangement, internal clearance, cage construction, bearing designation. Record whether rings are separable and retain every suffix because apparently similar flange arrangements perform different locating roles. A clear photograph, drawing or readable reference can resolve details that dimensions alone do not show.

How should I select cylindrical roller bearings?

Select flange layout, row count and cage from radial load, axial location, speed, shock and required thermal displacement. Confirm the mating parts and operating environment before ordering, since an apparently similar size can use a different profile, material or internal arrangement.

Last updated: 2026-10-08