SKF single row cylindrical roller bearings wholesaler

As a bearing distributor, Nodes bearing - SKF cylindrical roller bearings wholesaler, have a wide range of SKF cylindrical roller bearings in stock.

SKF single row cylindrical roller bearings are available in many designs, series and sizes. The major design differences between the bearings presented in this section are in:

• the cage design and material
• the configuration of the inner and outer ring flanges

SKF cylindrical roller bearing features

• Low friction (Roller end / flange contact area)
  The open flange design, together with the roller end design and surface finish, promote lubricant film formation resulting in lower friction and higher axial load carrying capacity.
• Long service life
  The logarithmic roller profile reduces edge stresses at the roller/raceway contact and sensitivity to misalignment and shaft deflection.
• Enhanced operational reliability
  The surface finish on the contact surfaces of the rollers and raceways supports the formation of a hydrodynamic lubricant film.
• Separable and interchangeable
  The separable components of SKF cylindrical roller bearings are interchangeable. This facilitates mounting and dismounting, as well as maintenance inspections.
• High speed capability
  The cage designs are suitable for high speeds, rapid accelerations and impact loads.

SKF cylindrical roller bearing designs

The most common design of SKF single row cylindrical roller bearings are shown here.

NU design bearings

• have two integral flanges on the outer ring and no flanges on the inner ring
• can accommodate axial displacement of the shaft relative to the housing in both directions
• can be used together with an appropriate angle ring to stabilize the bearing in the axial direction 

N design bearings

• have two integral flanges on the inner ring and no flanges on the outer ring
• can accommodate axial displacement of the shaft relative to the housing in both directions

NJ design bearings

• have two integral flanges on the outer ring and one on the inner ring
• can accommodate axial displacement of the shaft relative to the housing in one direction only
• are used to locate the shaft axially in one direction
• can be used together with an appropriate angle ring to stabilize the bearing in the other axial direction

NUP design bearings

• have two integral flanges on the outer ring and one integral flange and one non-integral flange, i.e. a loose flange ring, on the inner ring
• are used to locate the shaft axially in both directions

Inch bearings

The design of SKF inch bearings in the CRL and CRM series conforms to the metric N design. They are mainly used in the aftermarket and, therefore, SKF recommends not to use these bearings for new bearing arrangement designs.

NUB design bearings

• have two integral flanges on the outer ring and no flanges on the inner ring that is extended on both sides
• can accommodate axial displacement of the shaft relative to the housing in both directions

NJP design bearings

• have two integral flanges on the outer ring and one non-integral flange, i.e. a loose flange ring, on the inner ring
• are used to locate the shaft axially in one direction

NF design bearings

• have two integral flanges on the inner ring and one integral flange on the outer ring
• are used to locate the shaft axially in one direction

NP design bearings

• have two integral flanges on the inner ring and one integral flange and one non-integral flange, i.e. a loose flange ring, on the outer ring
• are used to locate the shaft axially in both directions

SKF bearings without an inner or outer ring

• are available based on:
  • NU design bearings without an inner ring (RNU series) 
    → enable the shaft diameter to be larger to provide a stronger, stiffer shaft 
    → provide inside diameter Fw tolerance limits to be within F6 when the rollers are in contact with the outer ring raceway 
  • N design bearings without an outer ring (RN series)
• can accommodate axial displacement, of the shaft relative to the housing, limited by the width of the raceway:
  • on the shaft for RNU bearings
  • in the housing for RN bearings
• are typically used in applications where hardened and ground raceways can be machined on the shaft or in the housing

SKF bearings with a tapered bore

• are available with a 1:12 tapered bore (designation suffix K)
• have radial internal clearance greater than corresponding bearings with a cylindrical bore

SKF bearings with a snap ring groove in the outer ring

• are identified by the designation suffix N
• can be axially located in the housing by a snap ring:
  • to save space
  • to reduce mounting time

Bearings with locating slots in the outer ring

• are available with one or two locating slots (designation suffix N1 or N2) 
  The two locating slots are positioned 180° apart. 
• can be used to prevent the outer ring from turning where it must be mounted with a loose fit

related articles

• SKF single row cylindrical roller bearings cages
• SKF cylindrical roller bearings designation system

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