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Mitchell Iron & Supply Co.

TAPERED ROLLER BEARING
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Inch and metric sized tapered roller bearings are designed to carry maximum combinations of radial and thrust loads simultaneously.

ET (Endurance Tapered) bearings use a high quality carburized steel and unique heat-treating process to greatly increase durability and extend life span.

4T bearings are manufactured from a special grade of case hardened steel and heat treated for maximum useful life.

Sized from 0.6250" (16 mm) inside diameter to 10.1250" (257 mm) outside diameter. Metric ISO sizes from 15 mm inside diameter to 160 mm outside diameter.

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Tapered roller bearings consist of an inner ring (cone), an outer ring (cup), a cage and rollers which are profiled to distribute the load evenly. They have high radial and axial (thrust) load capacities at low to intermediate speeds. Tapered roller bearings are available in single-row, two-row and four-row designs. With single-row bearings, the thrust load capacity is about 60% of the radial capacity. Double-row bearings have a greater radial load capacity and can handle thrust loads from both directions. The rollers can be configured so that the contact lines to the races converge or diverge towards the axis of rotation. Diverging double-row bearings increase the rigidity of the shaft mounting, but converging bearings do not. Other configurations for double-row bearings feature a single outer ring and two inner rings, or two outer rings and a single inner ring. Four-row tapered roller bearings consist of four rows of alternating converging and diverging rollers.

Most tapered roller bearings are made of alloy steels or low-carbon steels. Some applications require the use of case-hardened or thorough-hardened, high-carbon, bearing-quality steel. High-carbon grades of steel do not require carburizing and can be case-hardened by induction heating or thorough-hardened by conventional heating methods. When low-carbon, carburized grades of steel are used, carbon is introduced after the cylindrical roller bearings are machined to a depth sufficient to produce a hardened case that can sustain bearing loads. The addition of carbon and alloys ensures the proper combination of a hard, fatigue-resistant case and a tough, ductile core.

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Mitchell Iron & Supply Co.
217 w 1st Ave
Mitchell SD 57301
Phone (605) 996-2447
   Fax (605) 996-0394
 
Summers Bearing & Supply Co.
250 4th St. NE
Huron SD 57350
Phone (605) 554-0480
Fax (605) 554-0481