30211 Single Row Tapered Roller Bearing 55*100*21mm SUNBEARING

Product Description



Tapered Roller Bearing 30211

Specification

Design Units

Metric

Structure

Roller Bearing

Weights

0.735kgs

Cage Material

Steel cage

Material

Chrome Steel GCR15

Ball Type

Carbon chromium steel

Seals Type

Metal Seals

Certificate

ISO9001:2008

Advantage

Low noise, less vibration, high precision and long life

Number of Row

Single

Dimensions

d-Bore Diameter

55mm

D-Outer Diameter

100mm

Precision Rating

P5 P6 P4 P2 P0

Clearance



C2 C3 C4 C5 C0

H-Total Width

21mm

Basic Load Ratings

Cr Dynamic Load Rating

102800N

C0r Static Load Rating

106000N



The inner or outer ring of double row taper roller bearing is a whole. The small end of two inner (or outer) rings are similar. There is a spacer between two rings. The clearance is adjusted by the thickness of the spacer. The spacer can also be used to adjust the pre-surplus of double row tapered roller bearings.





35000 double row tapered roller bearings have a variety of internal structure:

-- with a spacer and a steel plate punched window-type cage

-- with a spacer , hollow roller and pillar steel cage



37000-type structure of double row tapered roller bearings have a variety of internal structure:

-- with a spacer, cage and steel plate.

-- with a spacer, hollow roller and steel pillar type cage.



Application:

Tapered roller bearings are widely used in automobiles, rolling mills, mining, metallurgy, plastics machinery and other industries.



Single row taper roller is the most be used of the taper roller bearing series. The small sizes Double row taper roller are used in the car wheel hub in the recently years. Four-row taper roller bearings were used in large cold, hot rolling mill, and other heavy machinery.



Double row tapered roller bearings are mainly used for gear boxes, lifting equipment, rolling mills and for mining machinery, such as tunnel boring machine.