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Cylindrical Roller Bearings

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Cylindrical Roller Bearings

Cylindrical roller bearings (CRBs) have a simple structure with their cylindrical rollers in linear contact with the raceways. They offer high load capacity under primarily radial loads. Low friction between the rollers and ring ribs makes these bearings suited for high speed rotation.

Single-row bearings are designated as NU, NJ, NUP, N, or NF, while double-row bearings are designated as NNU or NN, depending on if side ribs are used. All types allow the inner and outer rings to be separated.

Some CRBs used as free-end bearings have no ribs so that the rings can move axially relative to each other. When the inner or outer ring has ribs on both sides and the other ring has a rib on one side, these bearings can take some axial load in one direction.

Types Of Cylindrical Roller Bearings

  • Cylindrical Roller Bearings (Pressed Steel Cages).
  • Cylindrical Roller Bearings (Machined Brass Cages).
  • Cylindrical Roller Bearings (Polyamide Resin Cages).
  • Full-Complement Cylindrical Roller Bearings.
  • Cylindrical Roller Bearings for Sheaves.

Features And Benefits Of Cylindrical Roller Bearings

  • Excellent sealing Contact seals significantly reduce the entry of water and foreign matter.
  • High load capacity These bearings can take the significant radial and thrust loads present in crane sheaves.
  • Corrosion-resistant A phosphate coating improves resistance to rust and corrosion.
  • Easy grease replenishment Lubrication holes supplied in the inner ring allow for grease in sealed types to be easily refilled and replaced.
  • Fewer mounting parts Equipped with a locating snap ring, these bearings reduce the number of surrounding components, allowing for a more economical sheave structure.

Application And Uses Of Cylindrical Roller Bearings

  • Cylindrical Roller Bearings produce less friction than other kinds of rolling bearings, which allows them to run cooler even at speeds that are high.
  • This type of bearing is most commonly used in the machinery industry, industrial fans, agriculture, etc.
  • High rigidity Ideal for applications requiring bearing rigidity.
  • Pumps, compressors, screw chillers, elevator hoists

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