Rolling mill four row tapered bearing application request

Four row circular cone roller bearings, because its can accept bigger diameter, the axial load, and at the same time axis under the condition of clearance fit can stable operation, meet the request of quick disassembling, independent and able to use ( Don't configures auxiliary bearing) Can directly reduce the width and length of the roll bearing box, type bearing's mechanical equipment manufacturers, therefore often selection for mill in the middle of the roll and work roll. This type bearing device requests with other radial load bearing complex, in addition to the necessary tolerance matching, installation time, more request related mating parts to the following: a, insist on interference problem of typical type 380000 four row tapered bearing consists of two double row roller components ( Rolling body, insist on shelf, inner ring) And a double outer ring and two single outer ring, two side baffle, an inner circle of insulation. Due to structural constraints, the highlighted frame often insisted on inside and outside the ring height 2 - 7毫米( The structure and size series, outstanding height different) , often cause mating parts and stick to attack intervention, form a stick to wear and jam, deformation problems, serious when cause bearing online burning down. So the necessary request to cooperate and adhere to the frame with spacing appropriate component size. Especially for the following position: 1, end gland 1, and adhere to the rack ends gland the reach mouth diameter and adhere to the rack with prominent local diameter, with spacing not less than 3. 5mm。 2, axial locking ring and insist on the axial locking ring diameter with stick to highlight local inner cooperation, cooperate with interval is not less than 3. 5mm。 3, 2 cover face pressure, and adhere to the rack ends gland 2 the reach mouth height and adhere to the rack protruding outer ring height not less than 4 mm height difference with interval. Second, the inner ring with axial compression ring 1, bearing inner ring end face and axial compression ring end face stick to 0. 25 - 0. 45 mm axial spacing, slow down the inner ring and clamping ring end face and wear; Slow tilt of bending roll and thermal shrinkage of bearing inner ring and the harmful effects of shaft capacity. 2, the outer diameter of inner ring end face and compression ring end face diameter values are equal or slightly smaller ( ≯3毫米) To avoid inner ring compression ring worn by hold-down ring end face wear sag. 3, bearing inner ring end face or lateral compression ring end face to open tank ( Circular trough) , increase between the two end face is smooth, also slow down the end wear away, edge, etc. 3, 1, inner diameter and inner diameter and the diameter of axle diameter of axle cooperate near the unloading is quick to complete ( Cooling can be quickly installed, when the machine can be fast discharge) Fitting clearance under the premise of, adhere to the minimum, slow down the diameter of axle and bearing aperture and wear; Reduce the bearing inner ring related to axial sliding friction. 2, at shaft corresponding bearing inner ring end face of two joint open tank ( Circular trough) Avoid chamfering and bearing inner ring baffle and the diameter of axle surface friction, hair appearance. Four, moving maze ring ( Shoulder) With inner ring 1, dynamic labyrinth ring ( Shoulder) Outer diameter and cooperation of the inner ring end face diameter values are equal or slightly smaller ( ≯3毫米) , avoid inner ring wear labyrinth ring ( Shoulder) By moving maze ring ( Shoulder) End face sag, edge, etc. 2, verbal labyrinth ring ( Shoulder) End face or lateral bearing inner ring end face to open tank ( Circular trough) , an increase of between the two end face is smooth, slow down the end surface wear. 3, dynamic labyrinth ring ( Shoulder) Hardness of not less than HRC45 diameter appearance, and seal lip contact roughness value introduction 0. 25 - 0. 5 um, avoid and sealing lip wear and damage to each other. Five, high bearing outer ring assembly with high end gland 1, adhere to the outer ring assembly with two end cover are in a state of press close to close, guarantee the preset clearance of bearing, especially radial load large working place, such as: rolling mill bearing roller. After 2, and changing the bearing outer ring assembly must be adjusted to high end cover and to cooperate, adjustment, Inelastic TAB) Error of pressure or clearance 0 0. 05mm。