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

A new type of four-row tapered roller bearing with a non-standard inner diameter of 279.4 for the basket frame

(1) Technical field: a four-row tapered roller bearing, which belongs to a large bearing. Mainly used as special bearings for backup rolls and work rolls on rolling mills in the steel and non-ferrous metallurgical industries. It belongs to engineering component bearings (F16C) and metal rolling (B21B).

(two) background technology:

The existing four-row tapered roller bearings used for supporting rolls or work rolls in rolling mills in the metallurgical iron and steel and non-ferrous metallurgical industries, due to the harsh working conditions of the bearings, high rotational speed, large loads and large impact forces. Time-consuming and labor-intensive when changing rolls. In order to reduce the cost of use, the user requires the bearing to have a long life.

(3) Contents of the invention: The utility model proposes a new type of four-row tapered roller bearing with a basket-shaped frame with a non-standard inner diameter of 279.4, and its purpose is to provide users with a long-life four-row tapered roller bearing. Provides a new type of four-row tapered roller bearings with external dimensions and structural elements.

The utility model is used for the bearing model 3806/279.4 (that is, 38 is a four-row tapered roller bearing, 06 is an indeterminate size series code, and 279.4 is the inner diameter of the bearing). The technical solution provided by the utility model is a non-standard new design of the bearing model. The technical scheme adopted is as follows:

A new type of four-row tapered roller bearing with a basket-shaped non-standard inner diameter of 279.4, with two single-row outer rings 1, one double-row outer ring 6, two double-row inner rings 4, and an inner spacer between the two double-row inner rings Ring 5, two outer spacers 2 are set between the single-row outer ring and the double-row outer ring, and a plurality of rollers 3 are arranged between the inner and outer rings, and are supported by a basket-shaped cage 7; its characteristics are: a Bearing inner diameter d, bearing outer diameter D, bearing outer ring assembly width T, bearing inner ring assembly width B, bearing roller diameter Dw, roller length L, number of rollers per row Z, and roller semi-taper angle ψ The value range is the numerical range of Table 1 respectively;

Table 1

In order to obtain the best effect of four-row tapered roller bearings, the bearing inner diameter d, bearing outer diameter D, bearing outer ring assembly width T, bearing inner ring assembly width B, bearing roller diameter Dw, The roller length L, the number Z of rollers in each row, and the roller half-taper angle ψ are the values of No. 1 in Table 2, respectively. Table 2

Beneficial effects of the utility model: the new four-row tapered roller bearing adopts the design of the company's original "rolling bearing limit design method", and the structural element values of the above-mentioned one type of four-row tapered roller bearing are determined. Under the conditions of design strength and processing requirements, the designed rolling body has the largest diameter and longest length, the highest rated dynamic load value of the bearing, and the longest calculated life of the bearing, which meets the user's long life requirement and reduces the user's use cost.

(4) Description of drawings

Figure 1 Front sectional view of a new type of four-row tapered roller bearing with a non-standard inner diameter of 279.4 in the basket frame.

Figure 2 Shape drawing of roller 3 (for basket cage 7)

(5) Specific implementation methods

See the new four-row tapered roller bearing with a non-standard inner diameter of 279.4 for the basket frame of No. 1 in Table 2. As shown in Figure 1, there are two single-row outer rings 1, one double-row outer ring 6, two double-row inner rings 4, an inner spacer ring 5 is set between the two double-row inner rings, and the single-row outer ring and double-row outer ring There are two outer spacers 2 altogether. Here, the cage adopts a basket-shaped cage 7 . See No. 1 in Table 2 and Figure 1, bearing dimensions: bearing inner diameter d is 279.4mm, bearing outer diameter D is 393.7mm, bearing outer ring assembly width T and bearing inner ring assembly width B are 269.875mm. The value of the structural elements of the four-row tapered roller bearing determined by the rolling bearing limit design method is as follows: see Table 2 and Figure 2, the roller diameter Dw is 32.260mm, the roller length L is 51mm, and the number of rollers in each row in the circumferential direction Z is 31, and the roller half 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