CN2911300Y - Long service roller bearing for rolling mill - Google Patents

Long service roller bearing for rolling mill Download PDF

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Publication number
CN2911300Y
CN2911300Y CN 200520032732 CN200520032732U CN2911300Y CN 2911300 Y CN2911300 Y CN 2911300Y CN 200520032732 CN200520032732 CN 200520032732 CN 200520032732 U CN200520032732 U CN 200520032732U CN 2911300 Y CN2911300 Y CN 2911300Y
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Prior art keywords
roller
bearing
diameter
bearings
row
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Expired - Fee Related
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CN 200520032732
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Chinese (zh)
Inventor
文鉴恒
张秀萍
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Chengdu Kehua Heavy Bearing Co., Ltd.
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CHENGDU HEAVY BEARING INST
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Priority to CN 200520032732 priority Critical patent/CN2911300Y/en
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Abstract

A cylindrical roller bearing with long service life for the rolling mill which can be applied to rolling mills, belongs to large and giant bearings, and are used to solve the problems of low rated dynamic load, short service life, and great consumption of the original bearing, long auxiliary time wasted and accumulated in changing rolls, direct influence on the output of the factory and increase in the cost. The limiting design method of bearings initiated by the inventor is adopted, and four-row cylindrical roller bearings of 24 types, three-row cylindrical roller bearings of 1 type, double row cylindrical roller bearings of 3 types, and single row cylindrical roller bearings of 2 types are determined and proposed. Compared with the exsiting bearings of the same type, the designed bearing structure has the roller diameter DW and the roller length both increased, and the circumferential number Z of the roller decreases, that is to say, under the condition of enough strength requirement of the keeping bearing rings and retainer, the effective space occupied by the roller is exploited as much as possible to increase the bearing rated dynamic load and to greatly prolong the service life.

Description

The milling train cylindrical roller bearing with long service life
(1) technical field: the utility model is a kind of roller bearing, belongs to large-scale and extra large size bearing.Be used for the metallurgy industry rolling mill.International classification number is F16C.
(2) background technique: the past roller bearing adopts the out-of-date methods design, and the product roller diameter of design is little, and length is short, bearing load rating value is low, working life is short, increased the consumption of bearing, also extend auxiliary times such as roll change, directly influenced the output of steel mill and caused cost to increase.
(3) summary of the invention: the milling train cylindrical roller bearing with long service life that the utility model proposes the single-row cylinder of 24 kinds of models, four row cylinders, three row cylinders of a kind of model, the biserial cylinder of 3 kinds of models, 2 kinds of models, it is low that its purpose solves in the above-mentioned old design roller bearing load rating exactly, the problem that working life is short.
The utility model is by inventor's initiative " rolling bearing newspaper limit design method ", and the bearing of design is compared with existing similar bearing, and roller diameter Dw increases, and roller length L increases, and every row roller quantity Z reduces.
The technological scheme that adopts is described below respectively: (successively describing by four row, three row, biserial, single-row order)
Milling train long lifetime four-line column roller bearing have two biserial outer ring 1a or 1b and one four row inner ring 4a or two biserial inner ring 4b, or the latter is set up three back-up ring 6a, 6b; Every row circumferentially are provided with a plurality of rollers 2 between various inside and outside circles, roller is supported by retainer 3a or 3b, the inner diameter d of 24 kinds of model bearings, bearing outside diameter D, the wide T of bearing is respectively the numerical value of sequence number 1～24 in the table 1, it is characterized in that the roller diameter Dw of 24 kinds of model bearings, roller length L, the span of the circumferential roller quantity Z of every row is respectively in the table 1 one group in 1～24, and promptly value is sequence number 1 or 2 ... or 24 number range.
Table 1
Sequence number Bearing boundary dimension (millimeter) Four-line column roller bearing structural element span (millimeter)
Bearing bore diameter d Bearing outside diameter D The wide T of bearing Roller diameter Dw Roller length L The heavy Z of roller number
1 180 260 168 21+0.5 -2 33+0.5 -2 29-1
2 180 260 180 20+0.5 -2 32+0.5 -2 31-1
3 240 330 220 20+0.5 -2 41.5+0.5 -2 39-1
4 250 340 230 22+0.5 -2 45.7+0.5 -2 39-1
5 260 360 200 22.5+0.5 -2 38.5+0.5 -2 39-1
6 260 370 220 26+0.5 -2 38+0.5 -2 35-1
7 260 400 290 37+0.5 -2 55+0.5 -2 26-1
8 280 390 220 27+0.5 -2 42+0.5 -2 35-1
9 280 390 275 30+0.5 -2 54.8+0.5 -2 33-1
10 300 420 240 31+0.5 -2 41+0.5 -2 33-1
11 320 460 300 35+0.5 -2 56+0.5 -2 32-1
12 320 480 258 44+0.5 -2 48.5+0.5 -2 27-1
13 400 560 410 40+0.5 -2 80+0.5 -2 34-1
14 440 580 420 41+0.5 -2 79.5+0.5 -2 36-1
15 480 620 420 37+0.5 -2 81+0.5 -2 44-1
16 480 680 500 56+0.5 -2 95+0.5 -2 31-1
17 500 720 530 54+0.5 -2 105.5+0.5 -2 34-1
18 520 672 450 40+0.5 -2 88+0.5 -2 43-1
19 570 750 530 50+0.5 -2 107.5+0.5 -2 39-1
20 600 820 575 60+0.5 -2 115+0.5 -2 36-1
21 600 870 640 68+0.5 -2 129.5+0.5 -2 33-1
22 650 900 650 75+0.5 -2 131.5+0.5 -2 31-1
23 720 980 700 79+0.5 -2 140+0.5 -2 32-1
24 800 1080 700 73+0.5 -2 140.5+0.5 -2 39-1
For obtaining the optimum efficiency of four-line column roller bearing, the roller diameter Dw of 24 kinds of model bearings in the table 1, roller length L, the every number of columns Z of roller gets numerical value in the table 2 respectively, promptly leaves out the numerical value of the nominal size after the tolerance in the table 1.
Table 2
Sequence number Bearing boundary dimension (millimeter) Four-line column roller bearing structural element value (millimeter)
Bearing bore diameter d Bearing outside diameter D Bearing width T (B) Roller diameter Dw Roller length L Roller quantity Z
1 180 260 168 21 33 29
2 180 260 180 20 32 31
3 240 330 220 20 41.5 39
4 250 340 230 22 45.7 39
5 260 360 200 22.5 38.5 39
6 260 370 220 26 38 35
7 260 400 290 37 55 26
8 280 390 220 27 42 35
9 280 390 275 30 54.8 33
10 300 420 240 31 41 33
11 320 460 300 35 56 32
12 320 480 258 44 48.5 27
13 400 560 410 40 80 34
14 440 580 420 41 79.5 36
15 480 620 420 37 81 44
16 480 680 500 56 95 31
17 500 720 530 54 105.5 34
18 520 672 450 40 88 43
19 570 750 530 50 107.5 39
20 600 820 575 60 115 36
21 600 870 640 68 129.5 33
22 650 900 650 75 131.5 31
23 720 980 700 79 140 32
24 800 1080 700 73 140.5 39
Milling train long lifetime three-row cylindrical roller bearing have one three row outer ring 1c and one three row inner ring 4c, and both ends of the surface is adorned a back-up ring 6c respectively; Establish the bearing bore diameter d of 2,1 kinds of model bearings of a plurality of rollers between inside and outside circle, bearing outside diameter D, bearing width T (B) is respectively the numerical value of table 3 sequence number 1, it is characterized in that the bearing roller diameter Dw of a kind of model, roller length L, every number of columns Z span is respectively the number range of table 3 sequence number 1.
Table 3
Sequence number Bearing boundary dimension (millimeter) Three-row cylindrical roller bearing structural element span (millimeter)
Bearing bore diameter d Bearing outside diameter D Bearing width T (B) Roller diameter Dw Roller length L Roller quantity Z
1 600 820 385(365) 60+0.5 -2 93.2+0.5 -2 37-1
For obtaining the optimum efficiency of three-row cylindrical roller bearing, the roller diameter Dw of a kind of model bearing in the table 3, roller length L, the every number of columns Z of roller gets numerical value in the table 4 respectively, promptly leaves out the numerical value of the nominal size after the tolerance in the table 3.
Table 4
Sequence number Bearing boundary dimension (millimeter) Three-row cylindrical roller bearing structural element win the confidence (millimeter)
Bearing bore diameter d Bearing outside diameter D Bearing width T (B) Roller diameter Dw Roller length L Roller quantity Z
1 600 820 385(365) 60 93.2 37
Milling train long lifetime Biserial cylindrical roller bearing, have a biserial outer ring 1a and a biserial inner ring 4b, establish a plurality of rollers 2 between inside and outside circle, and support the bearing bore diameter d of 3 kinds of model bearings by retainer 3, bearing outside diameter D, bearing width T (B) is respectively the numerical value of table 5 sequence number 1-3, it is characterized in that 3 kinds of model bearing roller diameter Dw, roller length L, every number of columns Z span is respectively the number range of table 5 sequence number 1-3.
Table 5
Sequence number Bearing boundary dimension (millimeter) Biserial cylindrical roller bearing structural element span (millimeter)
Bearing bore diameter d Bearing outside diameter D Bearing width T (B) Roller diameter Dw Roller length L Roller quantity Z
1 280 380 220 23+0.5 -2 30+0 5 -2 37-1
2 560 820 258 70+0.5 -2 100+0.5 -2 30-1
3 630 850 218 48+0 5 -2 84+0.5 -2 46-1
For obtaining the optimum efficiency of Biserial cylindrical roller bearing, the roller diameter Dw of 3 kinds of model bearings in the table 5, roller length L, the every number of columns Z of roller gets numerical value in the table 6 respectively, promptly leaves out the numerical value of the nominal size after the tolerance in the table 5.
Table 6
Preface Bearing boundary dimension (millimeter) Biserial cylindrical roller bearing structural element value (millimeter)
Number Bearing bore diameter d Bearing outside diameter D Bearing width T (B) Roller diameter Dw Roller length L Roller quantity Z
1 280 380 220 23 30 37
2 560 820 258 70 100 30
3 630 850 218 48 84 46
Milling train long-life single line column roller bearing has a single-row outer ring 1d and a single-row inner ring 4d and an interior loose rib 6d; Or have a single-row outer ring 1d and a single-row inner ring 4e; Establish a plurality of roller 2a between inside and outside circle, and support by retainer 3a, the bearing bore diameter d of 2 kinds of model bearings, bearing outside diameter D, bearing width T (B) is respectively the numerical value of table 5 sequence number 1-2, it is characterized in that 2 kinds of model bearing roller diameter Dw, roller length L, every number of columns Z span is respectively the number range of table 7 sequence number 1-2.
Table 7
Sequence number Bearing boundary dimension (millimeter) Single row roller bearing structural element span (millimeter)
Bearing bore diameter d Bearing outside diameter D Bearing width T (B) Roller diameter Dw Roller length L Roller quantity Z
1 700 930 160 64+0.5 -2 116+0.5 -2 38-1
2 710 950 106 60+0.5 -2 70+0.5 -2 41-1
For obtaining the optimum efficiency of single row roller bearing, the roller diameter Dw of 2 kinds of model bearings in the table 7, roller length L, the every number of columns Z of roller gets numerical value in the table 8 respectively, promptly leaves out the numerical value of the nominal size after the tolerance in the table 7.
Table 8
Sequence number Bearing boundary dimension (millimeter) Single row roller bearing structural element value (millimeter)
Bearing bore diameter d Bearing outside diameter D Bearing width T (B) Roller diameter Dw Roller length L Roller quantity Z
1 700 930 160 64 116 38
2 710 950 106 60 70 41
The utility model beneficial effect: this cylindrical roller bearing with long service life, keeping under the constant situation of boundary dimension, with former same model bearing ratio, roller diameter Dw increases, and roller length L increases, and roller is provided with quantity Z at circumferential every row to be reduced, be that retainer shaft bearing ring and retainer have under enough requirement of strength conditions, as much as possible excavate the useful space that roller occupies, the dynamic load rating value is improved, increase substantially working life.
(4) description of drawings
Fig. 1 milling train is with long lifetime four-line column roller bearing (being used for embodiment 1)
Fig. 2 milling train is with long lifetime four-line column roller bearing (being used for embodiment 2)
Fig. 3 milling train is with long lifetime four-line column roller bearing (being used for embodiment 3)
Fig. 4 milling train is with long lifetime three-row cylindrical roller bearing (being used for embodiment 4)
Fig. 5 roller 2 shape figure (being used for solid cage 3)
Fig. 6 milling train is with long lifetime Biserial cylindrical roller bearing (being used for embodiment 5)
Fig. 7 roller 2a shape figure (being used for column support type retainer 3a)
Fig. 8 milling train is with long-life single line column roller bearing (being used for embodiment 6)
Fig. 9 milling train is with long-life single line column roller bearing (being used for embodiment 7)
(5) embodiment
1: four row cylinder of embodiment is seen Fig. 1, Fig. 5
The long lifetime four-line column roller bearing of sequence number 6 in the table 2 has two biserial outer ring 1a, four row inner ring 4a, establishes a plurality of rollers 2 between inside and outside circle, and roller is supported by retainer 3, and retainer adopts solid cage 3 here.Bearing bore diameter d is 260mm, and bearing outside diameter D is 370mm, and bearing width T (B) is 220mm, and the roller diameter Dw of the bearing of determining with limit design method is that 26mm, roller length L are that at circumferential every row quantity Z to be set be 35 for 38mm, roller.The value of other model structural element is listed in the table 1 respectively.Generally speaking, table 1 middle (center) bearing roller diameter Dw value all adopts the structure of present embodiment 1 during less than 30mm.Belong to large size bearing.
2: four row cylinders of embodiment are seen Fig. 2, Fig. 5
The long lifetime four-line column roller bearing of sequence number 15 in the table 2 has two biserial outer ring 1a, two biserial inner ring 4b, establishes a plurality of rollers 2 between inside and outside circle, and roller is supported by retainer, and retainer adopts solid cage 3 here.Bearing bore diameter d is 480mm, and bearing outside diameter D is 620mm, and bearing width T (B) is 420mm, and the roller diameter Dw of the bearing of determining with limit design method is that 37mm, roller length L are that at circumferential every row quantity Z to be set be 44 for 81mm, roller.The value of other model structural element is listed in the table 1 respectively.Generally speaking, table 1 middle (center) bearing roller diameter Dw value all adopts the structure of present embodiment 2 during greater than 30mm and less than 55mm.Belong to large-scale, extra large size bearing.
3: four row cylinders of embodiment are seen Fig. 3, Fig. 7
The long lifetime four-line column roller bearing of sequence number 23 in the table 2, have between two biserial outer ring 1b, two outer rings and establish a guide ring 6a, outer end, two outer rings is established a side bumper circle 6b respectively, and establish two biserial inner ring 4b, between inside and outside circle, establish a plurality of roller 2a (see figure 7)s, roller is supported by retainer, and retainer adopts column support type retainer 3a here.Bearing bore diameter d is 720mm, and bearing outside diameter D is 980mm, and bearing width T (B) is 700mm, and the roller diameter Dw of the bearing of determining with limit design method is that 79mm, roller length L are that at circumferential every row quantity Z to be set be 32 for 140mm, roller.The value of other model structural element is listed in the table 1 respectively.Generally speaking, table 1 middle (center) bearing roller diameter Dw value all adopts the structure of present embodiment 3 during greater than 55mm.Belong to extra large size bearing.
4: three row cylinders of embodiment are seen Fig. 4, Fig. 5
The long lifetime three-row cylindrical roller bearing of sequence number 1 in the table 4, have one three row outer ring 1c, three row inner ring 4c, be equipped with the side bumper circle 6c of embedding in the outer ring both ends of the surface, between inside and outside circle, establish a plurality of rollers 2, bearing bore diameter d is 600mm, and bearing outside diameter D is 820mm, and bearing outer ring width T is 385mm, the bearing inner race width B is 365mm, and the roller diameter Dw of the bearing of determining with limit design method is that 60mm, roller length L are that at circumferential every row quantity Z to be set be 37 for 93.2mm, roller.Span to this model structural element is listed in the table 3.
Embodiment 5: the biserial cylinder is seen Fig. 6, Fig. 5
The long lifetime Biserial cylindrical roller bearing of sequence number 2 in the table 6 has a biserial outer ring 1a, a biserial inner ring 4b, establishes a plurality of rollers 2 between inside and outside circle, and roller is supported by retainer, and retainer adopts solid cage 3 here.Bearing bore diameter d is 560mm, and bearing outside diameter D is 820mm, and bearing width T (B) is 258mm, and the roller diameter Dw of the bearing of determining with limit design method is that 70mm, roller length L are that at circumferential every row quantity Z to be set be 30 for 100mm, roller.Span to other model (two kinds) structural element is listed in table 5 sequence number 1～3.
Embodiment 6: single-row cylinder is seen Fig. 8, Fig. 7
The long-life single line column roller bearing of sequence number 1 in the table 8, have a single-row outer ring 1d, a single-row inner ring 4d, adorn an interior loose rib 6d, between inside and outside circle, establish a plurality of roller 2a at the bearing inner race end, roller is supported by retainer, and retainer adopts column support type retainer 3a here.Bearing bore diameter d is 700mm, and bearing outside diameter D is 930mm, and bearing width T (B) is 160mm, and the roller diameter Dw of the bearing of determining with limit design method is 64mm,, roller length L is that at circumferential every row quantity Z to be set be 38 for 116mm, roller.
Embodiment 7: single-row cylinder is seen Fig. 9, Fig. 7
The long-life single line column roller bearing of sequence number 2 in the table 8 has a single-row outer ring 1d, a single-row inner ring 4e, establishes a plurality of roller 2a between inside and outside circle, and roller is supported by retainer, and retainer adopts column support type retainer 3a here.Bearing bore diameter d is 710mm, and bearing outside diameter D is 950mm, and bearing width T (B) is 106mm, and the roller diameter Dw of the bearing of determining with limit design method is that 60mm, roller length L are that at circumferential every row quantity Z to be set be 41 for 70mm, roller.

Claims (2)

1. milling train long lifetime four-line column roller bearing has two biserial outer rings (1a or 1b) and one four row inner ring (4a) or two biserial inner rings (4b), or the latter set up three back-up rings (6a, 6b); Every row circumferentially are provided with a plurality of rollers (2) between various inside and outside circles, roller supports by retainer (3a) or (3b), the inner diameter d of 24 kinds of model bearings, bearing outside diameter D, the wide T of bearing is respectively the numerical value of sequence number 1～24 in the table 1, it is characterized in that the roller diameter Dw of 24 kinds of model bearings, roller length L, the span of the circumferential roller quantity Z of every row is respectively in the table 1 one group in 1～24, and promptly value is sequence number 1 or 2 ... or 24 number range.Table 1
Sequence number Bearing boundary dimension (millimeter) Four-line column roller bearing structural element span (millimeter) Bearing bore diameter d Bearing outside diameter D The wide T of bearing (B) Roller diameter Dw Roller length L Roller quantity Z 1 180 260 168 21+0.5 -2 33+0.5 -2 29-1 2 180 260 180 20+0.5 -2 32+0.5 -2 31-1 3 240 330 220 20+0.5 -2 41.5+0.5 -2 39-1 4 250 340 230 22+0.5 -2 45.7+0.5 -2 39-1 5 260 360 200 22.5+0.5 -2 38.5+0.5 -2 39-1 6 260 370 220 26+0.5 -2 38+0.5 -2 35-1 7 260 400 290 37+0.5 -2 55+0.5 -2 26-1 8 280 390 220 27+0.5 -2 42+0.5 -2 35-1 9 280 390 275 30+0.5 -2 54.8+0.5 -2 33-1 10 300 420 240 31+0.5 -2 41+0.5 -2 33-1 11 320 460 300 35+0.5 -2 56+0.5 -2 32-1 12 320 480 258 44+0.5 -2 48.5+0.5 -2 27-1 13 400 560 410 40+0.5 -2 80+0.5 -2 34-1 14 440 580 420 41+0.5 -2 79.5+0.5 -2 36-1 15 480 620 420 37+0.5 -2 81+0.5 -2 44-1 16 480 680 500 56+0.5 -2 95+0.5 -2 31-1 17 500 720 530 54+0.5 -2 105.5+0.5 -2 34-1 18 520 672 450 40+0.5 -2 88+0.5 -2 43-1 19 570 750 530 50+0.5 -2 107.5+0.5 -2 39-1 20 600 820 575 60+0.5 -2 115+0.5 -2 36-1 21 600 870 640 68+0.5 -2 129.5+0.5 -2 33-1 22 650 900 650 75+0.5 -2 131.5+0.5 -2 31-1 23 720 980 700 79+0.5 -2 140+0.5 -2 32-1 24 800 1080 700 73+0.5 -2 140.5+0.5 -2 39-1
2. by the described four-line column roller bearing of claim 1, the roller diameter Dw that it is characterized in that 24 kinds of model bearings, roller length L, the every number of columns Z numerical value of roller is respectively numerical value in the table 2, table 2
Sequence number Bearing boundary dimension (millimeter) Four-line column roller bearing structural element value (millimeter) Bearing bore diameter d Bearing outside diameter D The wide T of bearing (B) Roller diameter Dw Roller length L Roller quantity Z 1 180 260 168 21 33 29 2 180 260 180 20 32 31 3 240 330 220 20 41.5 39 4 250 340 230 22 45.7 39 5 260 360 200 22.5 38.5 39 6 260 370 220 26 38 35 7 260 400 290 37 55 26 8 280 390 220 27 42 35 9 280 390 275 30 54.8 33 10 300 420 240 31 41 33 11 320 460 300 35 56 32 12 320 480 258 44 48.5 27 13 400 560 410 40 80 34 14 440 580 420 41 79.5 36 15 480 620 420 37 81 44 16 480 680 500 56 95 31 17 500 720 530 54 105.5 34 18 520 672 450 40 88 43 19 570 750 530 50 107.5 39 20 600 820 575 60 115 36 21 600 870 640 68 129.5 33 22 650 900 650 75 131.5 31 23 720 980 700 79 140 32 24 800 1080 700 73 140.5 39
CN 200520032732 2005-01-07 2005-01-07 Long service roller bearing for rolling mill Expired - Fee Related CN2911300Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200520032732 CN2911300Y (en) 2005-01-07 2005-01-07 Long service roller bearing for rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200520032732 CN2911300Y (en) 2005-01-07 2005-01-07 Long service roller bearing for rolling mill

Related Child Applications (3)

Application Number Title Priority Date Filing Date
CN 200620135601 Division CN200958527Y (en) 2005-01-07 2005-01-07 Double-row long-life cylindrical roller bearing for press
CN 200620135602 Division CN200958530Y (en) 2005-01-07 2005-01-07 Triple-row long-life cylindrical roller bearing for press
CN 200620135499 Division CN200958529Y (en) 2005-01-07 2005-01-07 Single-row long-life cylindrical roller bearing for press

Publications (1)

Publication Number Publication Date
CN2911300Y true CN2911300Y (en) 2007-06-13

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ID=38133161

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200520032732 Expired - Fee Related CN2911300Y (en) 2005-01-07 2005-01-07 Long service roller bearing for rolling mill

Country Status (1)

Country Link
CN (1) CN2911300Y (en)

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GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: CHENGDU KEHUA HEAVY BEARINGS CO., LTD.

Free format text: FORMER OWNER: CHENGDU HEAVY BEARING INST

Effective date: 20090522

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20090522

Address after: Datong Street, Datong Town, Qingbaijiang District, Sichuan, Chengdu Province, China: 610300

Patentee after: Chengdu Kehua Heavy Bearing Co., Ltd.

Address before: Sichuan city of Chengdu Province three hydrological Road No. 3 Building 4 floor, zip code: 610031

Patentee before: Chengdu Heavy Bearing Inst

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20070613

Termination date: 20130107