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| Current Location: Home >> Products >> Industry Bearing >> Tapered Roller Bearings >> Four row tapered roller bearings (380000 type) |
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| Four row tapered roller bearings (380000 type) |
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Four row tapered roller bearing inner ring with the neck roll and generally with the gap, when the first installation of bearing load bearing box, and then put into boxes bearing journal. |
| Four row tapered roller bearings and bearing outer ring also used moving boxes with holes, the first load bearing outer ring A box (see Figure 2). Factory in the outer ring, as well as inside and outside the inner circle are printed every other character symbols, characters must be installed when the symbols are arranged in order of load bearing box. Can not be any swaps in order to prevent the bearing clearance to change. |
| Bearing all the parts are put into boxes, and within the inner circle separated, and the outer ring outside the ring every axial. |
| Measurement end with the outer ring bearing cover the width of the gap between the board to determine the appropriate thickness of the gasket. |
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The performance of this type of bearing is almost identical with double-row Tapered Roller Bearing, but the bearing can be subject to larger radial load than double-row Tapered Roller Bearing. Its limit speed is a little lower, and it is mainly applied on heavy-duty machine such as rolling mill etc. |
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| Four Row Tapered roller bearings |
Bearings No. |
Dimensions (mm) |
Basic Load Ratings(KN) |
Limiting Speed(min) |
Weight （KG） |
||||||||
New Code |
Old Code |
d |
D |
C1 |
T |
Rmin |
R1min |
Cr(N) |
Cor(N) |
Lubrication |
||
Grease |
Oil |
|||||||||||
380641 |
77741 |
205 |
320 |
205 |
205 |
4 |
4 |
980 |
1500 |
580 |
700 |
54.8 |
382044 |
2077144 |
220 |
340 |
305 |
305 |
4 |
3 |
2070 |
5430 |
500 |
630 |
105 |
382048 |
2077148 |
240 |
360 |
310 |
310 |
4 |
3 |
2110 |
5610 |
450 |
560 |
115 |
382052 |
2077152 |
260 |
400 |
345 |
345 |
5 |
4 |
2710 |
7140 |
430 |
530 |
153 |
381052X2 |
77752 |
260 |
400 |
255 |
255 |
5 |
4 |
2790 |
5800 |
430 |
530 |
123 |
382952 |
2077952 |
260 |
360 |
265 |
265 |
3 |
2.5 |
1760 |
4720 |
450 |
560 |
81 |
382952X1 |
|
260 |
370 |
265 |
265 |
3 |
2.5 |
2000 |
5960 |
450 |
530 |
96 |
382956 |
2077956 |
280 |
380 |
265 |
265 |
3 |
2.5 |
2000 |
2330 |
430 |
530 |
91 |
382056 |
2077156 |
280 |
420 |
345 |
345 |
5 |
4 |
2150 |
4530 |
380 |
480 |
191 |
381156 |
1077756 |
280 |
460 |
324 |
324 |
5 |
4 |
2840 |
7290 |
360 |
450 |
200 |
382960 |
2077960 |
300 |
420 |
300 |
300 |
4 |
3 |
2330 |
7120 |
380 |
480 |
130 |
382060 |
2077160 |
300 |
460 |
390 |
390 |
5 |
4 |
3180 |
9330 |
360 |
450 |
219 |
381160 |
1077760 |
300 |
500 |
370 |
370 |
5 |
4 |
3390 |
8710 |
340 |
430 |
285 |
382964 |
2077964 |
320 |
440 |
300 |
300 |
4 |
3 |
2730 |
7020 |
360 |
450 |
140 |
380664 |
77864 |
320 |
460 |
380 |
380 |
6 |
5 |
3100 |
8100 |
340 |
430 |
210 |
382064X2 |
20771634 |
320 |
480 |
380 |
380 |
5 |
4 |
3180 |
9330 |
340 |
430 |
252 |
381164 |
1077764 |
320 |
540 |
406 |
406 |
5 |
4 |
5500 |
14800 |
300 |
380 |
400 |
382968 |
2077968 |
340 |
460 |
310 |
310 |
4 |
3 |
2480 |
8100 |
340 |
430 |
145 |
381068 |
77168 |
340 |
520 |
325 |
325 |
5 |
4 |
3100 |
8620 |
320 |
400 |
234 |
381168 |
1077768 |
340 |
580 |
425 |
425 |
5 |
4 |
4580 |
11700 |
280 |
360 |
441 |
382972 |
2077972 |
360 |
480 |
310 |
310 |
4 |
3 |
2977 |
8030 |
300 |
380 |
164 |
381072 |
77172 |
360 |
540 |
325 |
325 |
5 |
4 |
3360 |
8840 |
300 |
380 |
248 |
381172 |
1077772 |
360 |
600 |
420 |
420 |
5 |
4 |
6360 |
17200 |
280 |
380 |
502 |
381076 |
77176 |
380 |
560 |
325 |
325 |
5 |
4 |
3360 |
8840 |
280 |
380 |
281 |
381176 |
1077776 |
380 |
620 |
420 |
420 |
5 |
4 |
4700 |
12300 |
240 |
360 |
510 |
380680 |
77880 |
400 |
540 |
280 |
280 |
5 |
4 |
1950 |
4030 |
320 |
410 |
189 |
381080 |
77180 |
400 |
600 |
356 |
356 |
5 |
4 |
4160 |
10400 |
240 |
320 |
317 |
381180 |
1077780 |
400 |
650 |
456 |
456 |
6 |
5 |
4510 |
11400 |
200 |
280 |
532 |
Inch four row tapered roller bearings are different from the metric bearings in structure, mounting dimension and rotate speed precision. Inch four row Tapered roller bearings are generally of separable design and have tapered cone and cup raceway between which tapered roller are arranged, their design makes Inch four-row tapered roller bearings particularly suitable for carrying combined (radial and axial ) load. |
Bearing Designations |
Principal Dimensions |
|||||
Designations |
d |
D |
T |
|||
mm |
inch |
mm |
inch |
mm |
inch |
|
M238849D/ M238810-M238810D |
187.325 |
7.375 |
269.875 |
10.625 |
211.138 |
8.3125197 |
M249748D/ M249710/ M249710D |
254 |
10 |
358.775 |
14.125 |
269.875 |
10.625 |
M249748DW/M249710/M249710D |
254 |
10 |
358.775 |
14.125 |
269.875 |
10.625 |
M252349DW/ M252310D |
269.875 |
10.625 |
381 |
15 |
282.575 |
11.125 |
M255449DW/ M255410/M255410D |
288.925 |
11.375 |
406.4 |
16 |
298.45 |
11.75 |
M257248DW/ M257210/ M257210D |
304.902 |
12.004 |
412.648 |
16.246 |
266.7 |
10.5 |
LM761648DW/ LM761610/ LM761610D |
341.312 |
13.4375 |
457.098 |
17.996 |
254 |
10 |
LM761649DW/ LM761610/ LM761610D |
343.052 |
13.506 |
457.098 |
17.996 |
254 |
10 |
HM266449DW/ HM266410- HM266410CD |
384.175 |
15.125 |
546.1 |
21.5 |
400.05 |
15.75 |
M268749D/ M268710/ M268710D |
415.925 |
16.375 |
590.55 |
23.25 |
434.975 |
17.125 |
LM769349D/ LM769310/ LM769310D |
431.8 |
17 |
571.5 |
22.5 |
336.55 |
13.25 |
M270449DA/ M270410/ M270410D |
450 |
17.716 |
595 |
23.425 |
368 |
14.488 |
L770847DGW/ L770810/ L770810D |
457.2 |
18 |
596.9 |
23.5 |
279.4 |
11 |
M271149DW/ M271110/ M271110D |
460 |
18.11 |
625 |
24.606 |
421 |
16.575 |
LM272249DW/ LM272210/ LM272210D |
482.6 |
19 |
615.95 |
24.25 |
330.2 |
13 |
LM272249DWA/ LM272210/ LM272210D |
482.6 |
19 |
615.95 |
24.25 |
330.2 |
13 |
M272647DGW/ M272610/ M272610D |
482.6 |
19 |
647.7 |
25.5 |
417.512 |
16.437 |
M274149DW/ M274110/ M274110D |
501.65 |
19.75 |
711.2 |
28 |
520.7 |
20.5 |
LM274049DW/ LM274010/ LM274010D |
508 |
20 |
695.325 |
27.375 |
415.925 |
16.375 |
M278749DW/ M278710/ M278710D |
571.5 |
22.5 |
812.8 |
32 |
593.725 |
23.375 |
Bearing Designations |
(kN) Basic load rating |
Other dimensions |
(kg) Weight |
||||||
Designations |
(Cr) Dynamic |
(Cor) Static |
B |
r min |
r1min |
||||
mm |
inch |
axial |
radial |
axial |
radial |
||||
M238849D/ M238810-M238810D |
1250 |
3430 |
211.138 |
8.3125 |
1.5 |
1.5 |
3.3 |
3.3 |
41.5 |
M249748D/ M249710/ M249710D |
2080 |
6050 |
269.875 |
10.625 |
3.3 |
3.3 |
3.3 |
3.3 |
88.9 |
M249748DW/M249710/M249710D |
2080 |
6050 |
269.875 |
10.625 |
3.3 |
3.3 |
3.3 |
3.3 |
88.9 |
M252349DW/ M252310D |
2340 |
7550 |
282.575 |
11.125 |
3.3 |
3.3 |
3.3 |
3.3 |
105 |
M255449DW/ M255410/M255410D |
2640 |
8150 |
298.45 |
11.75 |
3.3 |
3.3 |
3.3 |
3.3 |
125 |
M257248DW/ M257210/ M257210D |
2600 |
7000 |
266.7 |
10.5 |
3.3 |
3.3 |
3.3 |
3.3 |
102 |
LM761648DW/ LM761610/ LM761610D |
2350 |
7400 |
254 |
10 |
2 |
1.5 |
3.3 |
3.3 |
112 |
LM761649DW/ LM761610/ LM761610D |
2350 |
7350 |
254 |
10 |
2 |
1.5 |
3.3 |
3.3 |
110 |
HM266449DW/ HM266410- HM266410CD |
5000 |
16400 |
400.05 |
15.75 |
3.3 |
3.3 |
6.4 |
6.4 |
310 |
M268749D/ M268710/ M268710D |
|
|
434.975 |
17.125 |
3.3 |
3.3 |
6.4 |
6.4 |
369 |
LM769349D/ LM769310/ LM769310D |
3410 |
11500 |
336.55 |
13.25 |
1.5 |
1.5 |
6.4 |
6.4 |
310 |
M270449DA/ M270410/ M270410D |
4000 |
12250 |
368 |
14.488 |
3 |
3 |
6 |
6 |
285 |
L770847DGW/ L770810/ L770810D |
4080 |
11800 |
276.225 |
10.875 |
1.5 |
1.5 |
3.3 |
3.3 |
200 |
M271149DW/ M271110/ M271110D |
4100 |
12000 |
421 |
16.575 |
3 |
3 |
9 |
9 |
382 |
LM272249DW/ LM272210/ LM272210D |
4100 |
15200 |
330.2 |
13 |
6.4 |
6.4 |
6.4 |
6.4 |
252 |
LM272249DWA/ LM272210/ LM272210D |
4400 |
12750 |
419.1 |
16.5 |
3.5 |
3.5 |
6.4 |
6.4 |
265 |
M272647DGW/ M272610/ M272610D |
5500 |
15000 |
417.512 |
16.437 |
3.3 |
3.3 |
6.4 |
6.4 |
400 |
M274149DW/ M274110/ M274110D |
7650 |
26900 |
520.7 |
20.5 |
3.3 |
3.3 |
6.4 |
6.4 |
687 |
LM274049DW/ LM274010/ LM274010D |
5800 |
19600 |
415.925 |
16.375 |
3.3 |
3.3 |
6.4 |
6.4 |
464 |
M278749DW/ M278710/ M278710D |
10200 |
35000 |
593.7 |
23.374 |
3.3 |
3.3 |
6.4 |
6.4 |
1015 |
| If there is any question on design of muti row tapered roller bearings or special tapered roller bearings. Welcome to contact us in details. |
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| Tapered Roller Bearings | ||||||
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| Other related category: | Auto Bearings, Power Transmission Parts, Auto Steering Gears |
| Relative Product : | Deep Groove Ball Bearings , Angular Contact Ball Bearing , Cylindrical Roller Bearings , Self-Aligning Ball Bearing , Spherical Roller Bearings , Tapered Roller Bearings , Bearing Units , Thrust Bearings , Needle Roller Bearings , Linear Bearings , Special Non Standard Bearings |
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