TQOT design
Bearing with two double row inner rings with roller and cage assemblies. The inner rings have a tapered bore, taper 1:12. Steel window-type cages. One double row outer ring and two single row outer rings. Two intermediate rings between the outer rings .Bearings with a tapered bore are used when an interference fit is required for the inner rings on the roll neck, e.g. when rolling speeds are high.
TQIT design
Type TQIT bearings have a tapered bore that is matched and continuous through the inner races. This allows for an interference fit on the backup rolls of high-speed mills, where a loose inner race fit of a straight bore bearing could cause excessive neck wear.
Bearing with two single row inner rings and one double row inner ring with tapered bore (taper 1:12 or 1:30) with roller and cage assemblies. Steel window-type cages and two double row outer rings with an intermediate ring between them. Bearings with a tapered bore are used when an interference fit is required for the inner rings on the roll neck, e.g. when rolling speeds are high
The indirect mounting of the bearing pairs increases the overall effective spread of the bearing, providing optimum stability and roll rigidity.
Size range:
ID 123.022 mm to 1004.633 mm (4.8434 in. to 39.5525 in.)
OD 174.625 mm to 2032.000 mm (6.8750 mm to