Four-Row Tapered Roller Bearings   L713049DA/012/012DE

Four-row tapered roller bearings provide maximumcapacity in minimum space, combining the inherent high-load,radial/thrust capacity and direct/indirect mounting variables of taperedroller bearings.

Their main application is on the roll necks of rolling millequipment.All four-row bearings are supplied as pre-set matchedassemblies with all components identified to ensure correct installationsequence.

Four-Row Tapered Roller Bearings

TQO (Straight Bore Four-Row Assembly)

TQO bearings are directly mounted and comprised of two double innerraces, two single and one double outer race, with an inner race spacerand two outer race spacers.

Slots in the inner race spacer permit lubricant to flow from the bearingchamber to the roll neck.The inner race spacers are hardened to minimize face wear.

Size range:
ID 50.800 mm to 1500.000 mm (2.0000 in. to 59.0551 in.)
OD 83.337 mm to 2032.000 mm (3.2810 in. to 80.0000 in.)

Design Attributes
Two double cones, two single cups and a double cup with a cone spacer and two cup spacers.
Spacers have slots or holes for lubrication.

Cone spacers are hardened to reduce face wear.
Numbered serially to assure correct installation sequence.

Applications
Low- and medium-speed rolling mills

Four-Row Tapered Roller Bearings

TQOW (Straight Bore with Cone Face Lubrication Slots)

TQOW bearings are similar to TQO bearings.When the fillet and/or fillerrings do not already have lubrication slots, they are provided in thefaces of the bearing inner race.

Size range:

ID 50.800 mm to 1499.872 mm (2.0000 to 59.0501 in.)
OD 83.337 mm to 2032.000 mm(3.2810 in. to 80.0000 in.)

Design Attributes

Similar to TQO, except that the cone faces have lubrication slots at each face.
Two double cones, two single cups and a double cup with a cone spacer and two cup spacers.
Cone spacers are hardened to reduce face wear.
Numbered serially to assure correct installation sequence.

Applications
Low- and medium-speed rolling mills

Four-Row Tapered Roller Bearings