Tapered roller bearing BT4 series
radialaxialfour-row

tapered roller bearing
tapered roller bearing
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Characteristics

Rolling element
tapered roller
Configuration
radial, axial, four-row
Material
steel
Other characteristics
sealed, combined
Inside diameter

Min.: 139.7 mm (5.5 in)

Max.: 1,300 mm (51.18 in)

Outside diameter

Min.: 200 mm (7.87 in)

Max.: 1,720 mm (67.72 in)

Width

Min.: 157.162 mm (6.187 in)

Max.: 889.762 mm (35.03 in)

Description

Four-row tapered roller bearings can accommodate combined (radial and axial) loads at low to moderate speeds. They are used almost exclusively in work roll applications such as rolling mills. Product details Designs and variants Bearing data Loads Temperature limits Design considerations Mounting Designation system Features and benefits Depending on their design, four-row tapered roller bearings provide the following main features and benefits: Long service life The four-cup design (four separate outer rings) provides optimal load distribution over all four rows of rollers. Enhanced operational reliability Optimized surface finish on the contact surfaces of the rollers and raceways supports the formation of a hydrodynamic lubricant film. Improved wear resistance In particular, SKF Explorer bearings are made of extremely clean and homogenous steel and undergo a unique heat treatment, which improve the resistance to wear. Improved sealing performance with less leakage and less frictional heat The optimized seal design ensures high protection against external contamination but keeps friction and frictional heat low. This seal design also provides a better retention of lubricant, minimizes environmental impact and reduces maintenance costs. Equal load carrying capacity for sealed and open bearings The optimized and compact seal design enables identical internal design. Total bearing interchangeability

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