CN206860677U - The new four-row tapered roller bearing of the basket nonstandard internal diameter 279.4 of shape frame - Google Patents

Abstract

The new four-row tapered roller bearing of the basket nonstandard internal diameter 279.4 of shape frame, has two single-row outer rings, a double-row outer-ring, two biserial inner rings, cone spacer is set between two inner rings, sets two outer ring spacers altogether between outer ring, inside, multiple rollers are set between outer ring, and have basket cage.It is big to solve existing bearing impact load, the problems such as rotating speed is high, bearing life is short, roll change elapsed time is long, using company's original creation《Limit design method for rolling bearing》, there is provided the appearance and size and structural element value of a kind of model bearing, the design are realized under the conditions of design strength and technique processing request is met, the rolling element diameter of design is maximum, length is most long, the dynamic load rating value highest of bearing, and the mathematic(al) expectation of bearing is most long.Meet requirement of the user to bearing long-life and reduction use cost.Belong to large size bearing.Make support roller and working roll special bearing on steel and nonferrous metallurgy industry rolling mill.

Description

The new four-row tapered roller bearing of the basket nonstandard internal diameter 279.4 of shape frame

(1) technical field：A kind of four-row tapered roller bearing, belong to large size bearing.It is mainly used in steel and nonferrous metallurgy row Make support roller and working roll special bearing on industry rolling mill.Belong to engineering element bearing class (F16C), the rolling class (B21B) of metal.

(2) background technology：

The four-row tapered roller bearing of existing iron and steel metallurgy, nonferrous metallurgy industry rolling mill or working roll dress, because Bearing operating mode inclement condition, rotating speed is high, and the load born is big, and impulsive force is big.Arduously taken time when changing roll.User is reduction Use cost, it is desirable to which bearing possesses the long-life.

(3) content of the invention：The utility model proposes the nonstandard internal diameter 279.4 of basket shape frame new four-row tapered roller axle Hold, its purpose is exactly to provide the user long-life four-row tapered roller bearing.Provide a kind of four-row tapered roller of new model The appearance and size and structural element numerical value of bearing.

The utility model is used for bearing designation 3806/279.4, and (i.e. 38 be four-row tapered roller bearing, and 06 is indefinite size Serial code name, 279.4 be bearing bore diameter).Technical scheme provided by the utility model is that a kind of of this bearing designation nonstandard newly sets Meter.The technical scheme of use is as follows：

The new four-row tapered roller bearing of the basket nonstandard internal diameter 279.4 of shape frame, has two single-row outer rings 1, a biserial Outer ring 6, two biserial inner rings 4, sets cone spacer 5 between two biserial inner rings, sets two altogether between single-row outer ring and double-row outer-ring Outer ring spacer 2, multiple rollers 3 are set inside, between outer ring, and supported by basket cage 7；It is characterized in that：A kind of axle of model bearing Hold internal diameter d, bearing outside diameter D, bearing outer ring element width T, bearing inner race element width B, bearing roller diameter Dw, roller length L, each column roller quantity Z and roller half cone angle ψ span are respectively the number range of table 1；

Table 1

To obtain the optimum efficiency of four-row tapered roller bearing, a kind of bearing bore diameter d of model bearing in table 1, outside bearing Footpath D, bearing outer ring element width T, bearing inner race element width B, bearing roller diameter Dw, roller length L, each column roller quantity Z and roller half cone angle ψ value are respectively the numerical value of sequence number 1 in table 2.Table 2

The utility model beneficial effect：This new four-row tapered roller bearing, " the rolling bearing limit created using company Design method " designs, it is determined that a kind of above-mentioned structural element numerical value of model four-row tapered roller bearing, the design realize Under the conditions of meeting design strength and technique processing request, the rolling element diameter of design is maximum, and length is most long, the specified dynamic load of bearing Charge values highest, the mathematic(al) expectation of bearing is most long, meets the long life requirement of user, reduces the use cost of user.

(4) illustrate

The new four-row tapered roller bearing positive view of the nonstandard internal diameter 279.4 of Fig. 1 basket shape framves.

The shape graph of Fig. 2 rollers 3 (is used for basket cage 7)

(5) embodiment

It is shown in Table the new four-row tapered roller bearing of the nonstandard internal diameter 279.4 of basket shape frame of sequence number 1 in 2.See Fig. 1, have two Individual single-row outer ring 1, a double-row outer-ring 6, two biserial inner rings 4, cone spacer 5 is set between two biserial inner rings, in single-row outer ring Set two outer ring spacers 2 altogether between double-row outer-ring.Here retainer uses basket cage 7.Sequence number 1 and Fig. 1, bearing in being shown in Table 2 Appearance and size：Bearing bore diameter d is 279.4mm, and bearing outside diameter D is 393.7mm, bearing outer ring element width T and bearing inner race group Part width B is 269.875mm.With Ultimate Design of Rolling Bearings method determine four-row tapered roller bearing structural element value be： 2 and Fig. 2 are shown in Table, roller diameter Dw is 32.260mm, and roller length is that L is 51mm, is 31 in circumferential each column roller quantity Z, with And roller semi-cone angle ψ is 1 ° 10 '.

Claims (2)

1. the new four-row tapered roller bearing of the nonstandard internal diameter 279.4 of basket shape frame, there is two single-row outer rings (1), a biserial Outer ring (6), two biserial inner rings (4), sets cone spacer (5) between two biserial inner rings, between single-row outer ring and double-row outer-ring altogether If two outer ring spacers (2), multiple rollers (3) are set inside, between outer ring, and supported by basket cage (7)；It is characterized in that：It is a kind of Bearing bore diameter d, bearing outside diameter D, bearing outer ring element width T, bearing inner race element width B, the bearing roller of model bearing are straight Footpath Dw, roller length L, each column roller quantity Z and roller half cone angle ψ span are respectively the number range of table 1；Table 1

2. the new four-row tapered roller bearing of the nonstandard internal diameter 279.4 of basket shape frame as described in claim 1, it is characterized in that：It is described A kind of bearing bore diameter d of model bearing, bearing outside diameter D, bearing outer ring element width T, bearing inner race element width B, bearing rolling Sub- diameter Dw, roller length L, each column roller quantity Z and roller half cone angle ψ value are respectively numerical value in table 2；Table 2