Specifications for this item
Brand Name FAG Bearings
Part Number 21304-E1-TVPB
System of Measurement Metric
Bore Diameter 20 mm
Outside Diameter 52 mm
Overall Width 15 mm
EAN 4026677808080
Manufacturer Series Number E1 Series
Number of Items 1
UNSPSC Code 31171505
Product Features
E1 Series two row spherical roller bearing with oversize rollers and maximum misalignment adjustment for applications that support high radial and oscillating axial loads
Polyamide and nylon cage is lightweight and spaces the rollers for even load distribution and prevents contact to reduce friction, vibration, and noise
P5 precision on rings and hardened inner ring
CN (normal) radial clearance for applications where thermal expansion is not a factor
Straight bore fits conventional cylindrical shafts
Product Description
This FAG E1 Series spherical roller bearing has a polyamide and nylon cage, a CN radial clearance, an outer ring with lubrication groove and three oil holes, and a straight bore suitable for applications that support high radial and oscillating axial loads, such as in a wind turbine. Its rollers, cage, and rings conform to Deutsches Institut für Normung (DIN) P5 precision standard for performance within a narrow range of variation. The inner ring is hardened and the polyamide and nylon cage is lightweight, spaces the oversize rollers for even load distribution, and prevents contact to reduce friction, vibration, and noise. Its CN (normal) radial clearance is for applications where thermal expansion does not reduce clearance. The bearing’s straight bore fits conventional cylindrical shafts. This bearing has two rows of symmetrically arranged rollers oriented on a concave raceway, which allow self-realignment and compensate for static and dynamic alignment errors. The bearing has a maximum operating temperature of 248 degrees F. This roller bearing is intended for interchangeability and meets DIN standards for parts numbering, bearing dimensions, load ratings, tolerances, and clearances. It meets International Standards Organization (ISO) standards for hardening of bearing rollers and rings. This spherical roller bearing is suitable for use in material handling equipment, electric generators, and machine tools.
Specifications
Main bearing dimensions DIN 635-2
Basic dynamic load ratings DIN ISO 281
Dimensional and geometric tolerances DIN 620-2, (ISO 492) tolerance class PN
Steel composition for inner and outer rings and rollers ISO 683-17
System for creating part numbers DIN 623-1
Roller bearings use rolling elements to maintain the separation between moving parts to reduce rotational friction and support radial and axial loads. These elements can be one of the following types: ball, cylindrical, spherical, barrel, needle, spindle, or tapered. All roller bearings are open, shielded, or sealed. Sealed bearings are lubricated with oil or grease in the bearing factory, while open and shielded bearings are meant to be lubricated in place, with periodic reapplication of lubrication, based on use. The shield protects the working parts of the bearing from environmental debris that may be introduced and could reduce the ball bearing speed and lifespan. Rolling bearings are used in a range of applications from agricultural machinery to conveying equipment, robotics, dental equipment, elevators, rolling mills, ship rudder shafts, and aggregate crushers, among others.
FAG manufactures a variety of bearings that meet International Organization for Standardization (ISO) and Deutsches Institut für Normung (DIN) standards for quality assurance. The company, founded in 1883, is based in Schweinfurt, Germany.
