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Bearing Cylindrical Roller Bearings Type And Cage Type

237 Published by admin Jun 22,2026

Single-row bearing cylindrical roller bearing configurations are the most common industrial variants. They are broken down into standardized types based on their rib configurations:

NU Type: Features two integrated ribs on the outer ring and a completely smooth, ribless inner ring. The inner ring can slide freely in both directions, making it ideal as a free-end (floating) bearing to accommodate shaft thermal expansion.
N Type: Features two integrated ribs on the inner ring and a ribless outer ring. Like the NU type, it allows axial displacement in both directions and serves as a free-end bearing.
NJ Type: Features two integrated ribs on the outer ring and one rib on the inner ring. This design can restrict and accommodate axial displacement/load in a single direction.
NUP Type: Features two integrated ribs on the outer ring, one fixed rib on the inner ring, and a loose rib ring (thrust collar) on the other side. This allows the bearing to act as a fixed-end bearing, locating the shaft axially and carrying light axial loads in both directions.
NF Type: Features two integrated ribs on the inner ring and one rib on the outer ring. Similar to the NJ type, it can sustain a limited axial load in one direction.
NH Type: Composed of an NJ-type bearing combined with an HJ-type L-shaped thrust collar. It acts similarly to a NUP type to lock the shaft structurally as a fixed-end bearing

Multi-Row bearing cylindrical roller bearing and high-capacity variants

When an application demands greater load capacities or higher rigidity than a single row can provide, the following configurations are utilized:

Double-Row Bearings (NN / NNU): These utilize a second row of rollers to offer exceptional radial rigidity and higher load capacity. They are primarily used in precision machine tool spindles.
Four-Row Bearings (4R): Engineered to handle extremely heavy radial loads. They are almost exclusively found in heavy-industry machinery like rolling mills.
Full Complement Bearing Cylindrical Roller Bearings (SL Type): These bearings do not have a cage, allowing the structural gap to be entirely filled with the maximum number of rollers. They offer the highest possible radial load capacity but operate at lower maximum speeds due to increased friction between rollers.
Split Cylindrical Roller Bearings: The rings and cage are split into two halves. This allows for simple replacement in difficult-to-access bearing positions (like crankshafts) without dismantling adjacent machinery

Thrust bearing cylindrical roller bearings

Cylindrical Roller Thrust Bearings (e.g., 811 / 812 Series): Differing from the radial bearings listed above, these are designed to handle severe axial (thrust) loads and impact loads. They offer high axial rigidity but must not be subjected to any radial force.

Bearing Cylindrical Thrust Roller BearingSupplier

Common bearing cylindrical roller bearings cages:

1. Polyamide (Nylon) CagesMolded from glass-fiber reinforced polyamide (typically PA66), these are the most common cages for standard and high-capacity (E-design) industrial.

Common Suffixes: P, TVP, TN, T, ECP

2. Machined Brass CagesMachined from solid brass, these robust cages are guided either by the rolling elements (rollers) or by one of the bearing ring raceways

Common Suffixes: M, MA (outer ring guided), MB (inner ring guided), EM.

3. Pressed (Stamped) Steel Cages

Formed by pressing thin carbon-steel sheets into window-type or ribbon configurations

Common Suffixes: J, W.

4.Full Complement (No Cage):

Features zero cage structure, filling the bearing entirely with rollers to maximize radial load capacity at the expense of speed capabilities.

If you need bearing cylindrical roller bearings, spherical roller bearing,taper roller bearings, needle roller bearings .....roller and ball bearing. Feel free to contact me for more details!

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