ISO 9001 DNV GL Certification Mark ISO 14001 DNV GL Certification Mark

Radial cylindrical roller bearings, four rows with cylindrical bore

 

mrw0009

PRODUCT DESCRIPTION

Cylindrical roller bearing with four or more rows of rollers are used almost exclusively for rolling mills. They have lower friction than other roller bearings and can be successfully used where hight speed operation is called for. The low cross-sectional height of cylindrical roller bearings means that the roll necks can have large diameter in relation to the roll itself. In four rows cylindrical roller bearings, the rollers are guided between integral or not-integral flanges on the outer ring. The inner ring is without flanges; axial displacement of the shaft with respect to the housing can therefore be accomodated by the bearing within certain limits. Depending on the application, four rows cylindrical roller bearings can be supplied with a cylindrical bore or tapered bore. The inner or outer ring may be in one piece ore in more than one piece.

DIMENSIONS

The dimension of the bearings with the series designations listed in the tables comply to ISO 15-1981.

MISALIGNMENT

Multi-row cylindrical roller bearings are not designed to accomodate any misalignment.

TOLERANCES

Excluding particular request of costumers, four row cylindrical roller bearings with cylindrical or tapered bore have a dimensional accuracy corresponding to P6 tolerance class and a running accuracy to P5 tolerance class.

RADIAL INTERNAL CLEARANCE

Four row cylindrical roller bearing with cylindrical and tapered bore are produced with C3 or C4 radial internal clearance. On costumer’s request are available bearings with different radial internal clearances. All cylindrical roller bearings that presented helical groove on the inner ring bore, are made with C2 radial internal clearance.

CAGES

In relation to the execution, four row cylindrical roller bearing are fitted with either two double pronge machined roller guided cages of brass or steel, pin-types cages of steel (with pierced roller) or machined cages of brass with vent-hole. Some execution are supplied with steel pressed sheet.

HEAT TREATMENT

With some special exception, multi-row cylindrical roller bearing undergo special stabilizing treatment S0 which make them suitable for operating temperatures up to +150°C. On customer’s request it’s possible have other stabilizing treatment as:

> S1 (for working up to +200°C)

>S2 (for working up to +250°C)

INTERNATIONAL SUFFIXES

A/B/C/D/E – Deviating or modified internal design

C2 – Radial internal clearance less than Normal

C3 – Radial internal clearance greather than Normal

C4 – Radial internal clearance greather than C3

C5 – Radial internal clearance greather than C4

HA1 – Case-hardening of outer and inner rings

HA2 – Case-hardening of outer ring

HA3 – Case-hardening of inner ring

HA4 – Case-hardening of rollers, outer and inner rings

HB1 – Bainitic hardening for outer and inner rings

HB2 – Bainitic hardening for outer ring

HB3 – Bainitic hardening for inner ring

G – Helicoidal groove on the bore

K/K30 – Tapered bore, 1:12 on diameter (K); 1:30 on diameter (K30)

M – Machined brass cage

P4/P5/P6 – Dimensional and running accuracy to ISO tolerance class 4/5/6

VJ202 – Two rows bearing group

W – Lubrication groove on rings surface

WI – Lubrication groove on inner rings surface

WO – Lubrication groove on outer rings surfaces

W33 – Lubrication groove and three holes in outer ring

S0 – Stabilized rings up to 150°C

S1 – Stabilized rings up to 200°C

S2 – Stabilized rings up to 250°C

DOWNLOAD CAD MODELS

Untitled-1

MOUNTING DIMENSIONS
d D B
mm mm mm
MRW0001 115 165 107.5
MRW0002 127 174.6 150.8
MRW0003 139.7 215 195
MRW0004 139.7 215 195
MRW0005 145 210 155
MRW0006 145 225 156
MRW0007 150 230 156
MRW0008 160 230 130
MRW0009 160 230 168
MRW0010 160 233 180
MRW0011 165.1 225.4 168.3
MRW0012 170 230 130
MRW0013 170 230 160
MRW0014 170 240 130
MRW0015 170 260 225
MRW0016 180 260 168
MRW0017 180 260 168
MRW0018 190 270 200
MRW0019 190 280 200
MRW0020 190 270 170
MRW0021 190 280 170
MRW0022 200 280 170
MRW0023 200 280 180
MRW0024 200 280 200
MRW0025 200 285 200
MRW0026 200 290 192
MRW0027 200 290 192
MRW0028 200 310 230
MRW0029 210 290 192
MRW0030 220 300 200
MRW0031 220 310 192
MRW0032 220 310 225
MRW0033 220 330 230
MRW0034 230 330 206
MRW0035 230 365 250
MRW0036 240 330 180
MRW0037 240 330 220
MRW0038 240 330 240
MRW0039 240 360 290
MRW0040 250 340 230
MRW0041 260 360 204
MRW0042 260 360 230
MRW0043 260 370 220
MRW0044 260 370 240
MRW0045 260 400 290
MRW0046 265 370 234
MRW0047 270 380 295
MRW0048 280 380 290
MRW0049 280 390 220
MRW0050 280 390 250
MRW0051 280 390 275
MRW0052 280 400 285
MRW0053 280 410 300
MRW0054 280 420 300
MRW0055 290 390 190
MRW0056 300 420 300
MRW0057 300 420 320
MRW0058 300 420 330
MRW0059 320 460 240
MRW0060 320 480 350
MRW0061 330 460 340
MRW0062 340 480 350
MRW0063 340 480 350
MRW0064 340 480 370
MRW0065 340 500 370
MRW0066 340 560 380
MRW0067 350 500 380
MRW0068 350 500 410
MRW0069 350 520 300
MRW0070 350 520 300
MRW0071 350 520 320
MRW0072 360 500 250
MRW0073 360 500 250
MRW0074 360 510 400
MRW0075 370 520 380
MRW0076 380 520 280
MRW0077 380 540 260
MRW0078 380 540 300
MRW0079 380 540 400
MRW0080 380 540 400
MRW0081 380 540 400
MRW0082 380 540 400
MRW0083 380 560 300
MRW0084 380 560 325
MRW0085 390 540 320
MRW0086 390 550 310
MRW0087 399.9 590 440
MRW0088 400 560 410
MRW0089 400 590 440
MRW0090 410 560 400
MRW0091 410 560 400
MRW0092 410 560 420
MRW0093 410 600 440
MRW0094 420 580 260
MRW0095 420 580 260
MRW0096 420 580 320
MRW0097 420 580 320
MRW0098 420 600 440
MRW0099 420 620 400
MRW0100 431.5 571.5 300
MRW0126 500 680 450
MRW0127 500 710 480
MRW0128 500 720 400
MRW0129 500 720 530
MRW0130 500 738 500
MRW0131 510 680 500
MRW0132 510 730 520
MRW0133 510 760 550
MRW0134 529.9 870 670
MRW0135 530 760 520
MRW0136 530 780 500
MRW0137 530 780 570
MRW0138 536.2 762 558.8
MRW0139 536.2 762 558.8
MRW0140 536.2 762 558.8
MRW0141 549.9 740 510
MRW0142 550 740 510
MRW0143 550 800 520
MRW0144 550 800 560
MRW0145 559.8 920 710
MRW0146 560 820 600
MRW0147 571.1 813 594
MRW0148 571.1 813 594
MRW0149 580 780 520
MRW0150 580 780 521
MRW0151 580 780 558
MRW0152 600 820 575
MRW0153 600 820 575
MRW0154 600 870 540
MRW0155 600 870 578
MRW0156 600 870 640
MRW0157 600 870 640
MRW0158 610 820 430
MRW0159 628 922 600
MRW0160 630 850 436
MRW0161 634.5 901.9 674
MRW0162 650 900 650
MRW0163 650 920 670
MRW0164 658 1.1 650
MRW0165 660 820 440
MRW0166 660 880 450
MRW0167 680 980 640
MRW0168 690 980 715
MRW0169 700 930 620
MRW0170 710 1 715
MRW0171 730 960 620
MRW0172 730 1 750
MRW0173 748 1.1 690
MRW0174 750 1 500
MRW0175 750 1 670
MRW0176 759 1.2 740
MRW0177 759 1.2 740
MRW0178 760 1.1 790
MRW0179 761.4 1.1 787.4
MRW0180 761.4 1.1 787.4
MRW0181 780 1.1 780
MRW0182 799 1.1 700
MRW0183 800 1.1 700
MRW0184 820 1.1 745
MRW0185 820 1.1 800
MRW0186 820 1.1 825
MRW0187 850 1.2 840
MRW0188 850 1.2 840
MRW0189 863 1.2 876.3
MRW0190 863 1.2 876.3
MRW0191 865 1.2 750
MRW0192 865 1.2 840
MRW0193 865 1.3 930
MRW0194 937.5 1.3 825.5
MRW0195 937.5 1.4 975
MRW0196 937.5 1.4 1
MRW0197 980 1.3 880
MRW0198 1000 1360 800
MRW0199 1200 1590 1050
MRW0200 1400 1900 1360
MRW0101 440 620 450
MRW0102 440 620 450
MRW0103 440 650 355
MRW0104 440 660 340
MRW0105 447.3 635.2 463.5
MRW0106 450 590 300
MRW0107 460 760 600
MRW0108 460 650 355
MRW0109 460 650 424
MRW0110 460 650 460
MRW0111 460 650 470
MRW0112 460 650 470
MRW0113 460 680 400
MRW0114 474.7 600 368
MRW0115 475 600 368
MRW0116 480 650 450
MRW0117 480 680 420
MRW0118 480 680 500
MRW0119 480 680 500
MRW0120 488 637 350
MRW0121 500 650 260
MRW0122 500 670 450
MRW0123 500 670 479
MRW0124 500 670 480
MRW0125 500 670 517

Your name *

Company name *

Your email *

Phone number *

Your message

I have read the privacy policy *

Li-be.com uses cookies, also from third parts, in order to improve your browsing experience. By scrolling pages, clicking on links or images you agree with their use. Cookie Policy

The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.

Close