CN202118109U

CN202118109U - Novel full-sealed four-row tapered roller bearing

Info

Publication number: CN202118109U
Application number: CN2011201897853U
Authority: CN
Inventors: 曲晶媛; 许永奇; 刘俊颖
Original assignee: WAFANGDIAN RKB BEARING CO Ltd
Current assignee: WAFANGDIAN RKB BEARING CO Ltd
Priority date: 2011-06-08
Filing date: 2011-06-08
Publication date: 2012-01-18
Anticipated expiration: 2021-06-08

Abstract

A novel full-sealed four-row tapered roller bearing relates to the technical field of rolling bearings. Two sides of the external diameter of an outer ring spacer of the bearing are chamfered, and a trapezoid groove is arranged in the middle of the outer wall of the outer ring spacer. Two sides of an inner hole of the outer ring spacer are chamfered, and oil feeding holes are evenly distributed on the outer ring spacer. The outer rings of a single rolling path and a double rolling path are both in a shape of a ring, two sides of the outer rings are rounded, and two sides of taper holes of the outer rings are chamfered. A trapezoid cross section hole of the double rolling path is symmetrical on the left and the right, and two sides of the trapezoid hole are rounded. An bearing inner race is a segregated structure formed by two double rolling path inner rings, two symmetrical roller rolling paths are arranged on the external diameter of the two double rolling path inner rings, two arc grooves are arranged in each rolling path, a section of spiral oil guide groove is arranged on an inner hole of each double rolling path inner ring, and oil guide holes are arranged on the two sides of the inner wall. The external diameter of each double rolling path inner ring and two sides of the inner holes are all rounded. An inner seal assembly is formed by an inner space ring and a seal ring inlaid on the inside, the cross section of the inner space ring is in a T shape, a side seal assembly is formed by a loose rib and a double-lip seal matched with the loose rib, a single face of the external diameter of the loose rib is rounded and used for assembling.

Description

Novel fully-sealed formula four-row tapered roller bearing

Technical field

The utility model relates to technical field of rolling bearings, specifically relates to a kind of novel fully-sealed formula four-row tapered roller bearing.

Background technique

Four-row tapered roller bearing often uses under the environment of work under bad environment such as mine, metallurgy and milling train, and is inner for preventing that extraneous foreign matter (impurity, iron scale, cooling liquid etc.) from getting into bearing, so the sealed type tapered roller bearing occurred.At present, most of four row O-ring taper roller bearings mainly lean on following mode: the one, and the four row bearing sealed at both ends, inner ring is with the spacer ring sealing and regulate play.The 2nd, adopt sealed at both ends equally, inner ring cancellation spacer ring leans on two inner rings directly to contact and reaches sealing.Though this dual mode has reached certain sealing purpose, do not realize both can sealing fully, can regulate the target of play again.

Summary of the invention

In view of the defective that prior art exists, the utility model has provided a kind of novel fully-sealed formula four-row tapered roller bearing, has solved both to make bearing reach sealing fully target that again can the free adjustment play.Thereby at utmost prevented the entering of extraneous foreign matter and leaking of lubricant grease, and guaranteed the superiority that spacer ring is regulated play, reduced the inner ring end face owing to being in contact with one another the life-span reduction that wearing and tearing cause.The function of use of bearing and the life-span of having improved bearing have been guaranteed.

For realizing above-mentioned purpose, the technical solution that the utility model adopted is novel fully-sealed formula four-row tapered roller bearing: comprise single raceway outer ring, outer ring with double raceway, two raceway inner rings, roller, retainer, outer ring spacer, interior black box, side sealing assembly; Outer ring spacer external diameter both sides chamfering, there is a trapezoidal groove at outer ring spacer outer wall middle part; Outer ring spacer endoporus both sides chamfering; The oil hole that distribution is all arranged on the outer ring spacer.Single raceway outer ring is ring, the outer ring fillet of leaning now to one side, then to the other, the cone shape hole both sides chamfering of outer ring; Outer ring with double raceway is ring, hole, the trapezoid cross section bilateral symmetry of outer ring with double raceway, the trapezoidal hole fillet of leaning now to one side, then to the other.The inner ring of bearing is the branch body structure that is made up of two two raceway inner rings; Two raceway inner ring external diameters have the roller raceway of two symmetries, and two arc grooves are arranged in each raceway; On two raceway inner ring endoporus one section spiral oil guide slot is arranged, there is oil guiding hole on the inwall both sides; The equal rounding in both sides of two raceway inner ring external diameters and endoporus.The spiral oil guide slot cross section of two raceway inner ring inwalls is a circular arc.Interior black box by cone spacer be embedded in seal ring constitute, the cone spacer cross section is the T type; The side sealing assembly is made up of loose rib and the double-lip seal that matches, and loose rib external diameter single face rounding is used for assembling.

Roller, retainer are arranged on the inner ring raceway; Form two inner ring assemblies; With putting into black box and outer ring with double raceway in the middle of two inner ring assemblies, inner ring assembly, interior black box axially are connected with outer ring with double raceway, put into single raceway outer ring; Put into the side sealing assembly at last, axial play is adjusted through the cone spacer width tolerance in the black box in adjusting.Sealing is then through the assurance of the double-lip sealing ring in interior black box and two the side sealing assemblies.

Compared with prior art, the utlity model has following advantage: all-sealed structure has improved bearing seal property, has guaranteed the bearing sufficient lubrication; Reduced the friction of inner rolling element of bearing and raceway; Reduce operating temperature, delayed bearing race fatigue, guaranteed running accuracy and bearing rotating speed.T type cone spacer and black box make that the adjusting of bearing clearance is more flexible, and guarantee the inner ring face size, delay end wear, have improved bearing working life simultaneously again.

Because it is low to the utlity model has operating temperature, long service life, bearing accuracy is good, and rotating speed is high, regulates flexible characteristic, has solved the deficiency of existing technology, is a kind of new product with promotional value.

Description of drawings

Fig. 1 is the utility model section sectional view;

Reference character shown in Fig. 1 is following: 1, single raceway outer ring, 2, outer ring with double raceway, 3, two raceway inner ring, 4, roller, 5, retainer, 6, outer ring spacer, 7, interior black box, 8, the side sealing assembly.

Embodiment

For realizing above-mentioned purpose, the technical solution that the utility model adopted is: novel fully-sealed formula four-row tapered roller bearing comprises single raceway outer ring 1, outer ring with double raceway 2, two raceway inner ring 3, roller 4, retainer 5, outer ring spacer 6, interior black box 7, side sealing assembly 8; Outer ring spacer 6 external diameter both sides chamferings, there is a trapezoidal groove at outer ring spacer 6 outer walls middle part; Outer ring spacer 6 endoporus both sides chamferings; The oil hole that distribution is all arranged on the outer ring spacer 6.Single raceway outer ring 1 is ring, outer ring 1 fillet of leaning now to one side, then to the other, the cone shape hole both sides chamfering of outer ring 1; Outer ring with double raceway 2 is ring, hole, the trapezoid cross section bilateral symmetry of outer ring with double raceway 2, the trapezoidal hole fillet of leaning now to one side, then to the other.The inner ring 3 of bearing is the branch body structure that is made up of two two raceway inner rings; Two raceway inner ring 3 external diameters have the roller raceway of two symmetries, and two arc grooves are arranged in each raceway; On two raceway inner ring 3 endoporus one section spiral oil guide slot is arranged, there is oil guiding hole on the inwall both sides; The equal rounding in both sides of two raceway inner ring 3 external diameters and endoporus.The spiral oil guide slot cross section of two raceway inner ring 3 inwalls is a circular arc.Interior black box 7 by cone spacer be embedded in seal ring constitute, the cone spacer cross section is the T type; Side sealing assembly 8 is made up of loose rib and the double-lip seal that matches, and loose rib external diameter single face rounding is used for assembling.

Roller 4 retainers 5 are arranged on inner ring 3 raceways; Form two inner ring assemblies; With putting into black box 7 and outer ring with double raceway 2 in the middle of two inner ring assemblies, inner ring assembly, interior black box 7 and outer ring with double raceway 2 axially are connected, put into single raceway outer ring 1; Put into side sealing assembly 8 at last, the generation of axial internal clearance is through the adjustment of the cone spacer width tolerance in the black box 7 in the adjustment.Sealing is then through the assurance of the double-lip sealing ring in interior black box 7 and two the side sealing assemblies 8.

Claims

1. novel fully-sealed formula four-row tapered roller bearing; It is characterized in that novel fully-sealed formula four-row tapered roller bearing comprises single raceway outer ring (1), outer ring with double raceway (2), two raceway inner ring (3), roller (4), retainer (5), outer ring spacer (6), interior black box (7), side sealing assembly (8); Outer ring spacer (6) external diameter both sides chamfering, there is a trapezoidal groove at outer ring spacer (6) outer wall middle part; Outer ring spacer (6) endoporus both sides chamfering; The oil hole that distribution is all arranged on the outer ring spacer (6); Single raceway outer ring (1) is ring, outer ring (1) fillet of leaning now to one side, then to the other, the cone shape hole both sides chamfering of outer ring (1); Outer ring with double raceway (2) is ring, hole, the trapezoid cross section bilateral symmetry of outer ring with double raceway (2), the trapezoidal hole fillet of leaning now to one side, then to the other; The inner ring of bearing (3) is the branch body structure that is made up of two two raceway inner rings; Two raceway inner rings (3) external diameter has the roller raceway of two symmetries, and two arc grooves are arranged in each raceway; On two raceway inner rings (3) endoporus one section spiral oil guide slot is arranged, there is oil guiding hole on the inwall both sides; The equal rounding in both sides of two raceway inner ring (3) external diameters and endoporus; The spiral oil guide slot cross section of two raceway inner rings (3) inwall is a circular arc; Interior black box (7) by cone spacer be embedded in seal ring constitute, the cone spacer cross section is the T type; Side sealing assembly (8) is made up of loose rib and the double-lip seal that matches, and loose rib external diameter single face rounding is used for assembling;

Roller (4) retainer (5) is arranged on inner ring (3) raceway; Form two inner ring assemblies; With putting into black box (7) and outer ring with double raceway (2) in the middle of two inner ring assemblies, inner ring assembly, interior black box (7) and outer ring with double raceway (2) axially are connected, put into single raceway outer ring (1); Put into side sealing assembly (8) at last, the generation of axial internal clearance is through the adjustment of the cone spacer width tolerance in the black box (7) in the adjustment; Sealing then guarantees through the double-lip sealing ring in interior black box (7) and two the side sealing assemblies (8).