Four-Row Cylindrical Roller Bearings
Introduction
Four-row cylindrical roller bearings are available in several designs:
● with a cylindrical or tapered bore
● open or sealed
Four-row cylindrical roller bearings are used almost exclusively for the roll necks of rolling mill stands, calenders and roller presses. Because they are normally mounted with an interference fit on the roll neck, four-row cylindrical roller bearings are well suited for rolling mill applications where the rolling speed is high.
Because four-row cylindrical roller bearings can accommodate only radial loads, they are mounted together with deep groove or angular contact ball bearings, or with tapered roller bearings (either radial or thrust design) which accommodate the axial loads.
Features and Benefits
● Exceptional high load carrying capacity
Because of their high number of rollers, four-row cylindrical roller bearings are suitable for very heavy radial loads.
● Low friction (Roller end / flange contact area)
The open flange design, together with the roller end design and surface finish, promote lubricant film formation resulting in lower friction.
● Long service life
The logarithmic roller profile reduces edge stresses at the roller/raceway contact and sensitivity to misalignment and shaft deflection.
● Enhanced operational reliability
The surface finish on the contact surfaces of the rollers and raceways supports the formation of a hydrodynamic lubricant film.
● Separable and interchangeable
The separable components of XRL four-row cylindrical roller bearings are interchangeable. This facilitates mounting and dismounting, as well as maintenance inspections.
● High speed capability
The cage designs are suitable for high speeds, rapid accelerations and peak loads.
● Low cross-sectional height
The low cross-sectional height of four-row cylindrical roller bearings allows for relatively large roll neck diameters compared to the roll diameter.
Usage
The four-row cylindrical roller bearings are usually separable, that is, the conical inner ring consisting of the inner ring of the roller and retainer assembly may be mounted separately from the conical outer ring (outer ring).
Application
Four-row cylindrical roller bearings are widely used in automobile, rolling mill, mining, metallurgy, plastic machinery and other industries.
Parameters
| SIZE | dimensions | Basic load ratings | Fatigue load limit | ||||
| dynamic | static | ||||||
| d[mm] | D[mm] | B[mm] | C[mm] | C[kN] | C0[kN] | Pu[kN] | |
| BC4-0093 | 127 | 174.65 | 150.812 | 150.812 | 780 | 1320 | 153 |
| BC4-0101 | 145 | 210 | 155 | 155 | 980 | 1560 | 173 |
| BC4-0105 | 145 | 225 | 156 | 156 | 1100 | 1630 | 183 |
| BC4-0096 | 150 | 230 | 156 | 156 | 1120 | 1660 | 180 |
| BC4-0108 | 160 | 230 | 130 | 130 | 965 | 1340 | 143 |
| 315189 A | 160 | 230 | 168 | 168 | 1120 | 2200 | 240 |
| BC4-0103 | 160 | 230 | 168 | 168 | 1290 | 2200 | 240 |
| 315642/VJ202 | 165.1 | 225.45 | 168.3 | 168.3 | 1100 | 2240 | 240 |
| BC4-0111 | 165.1 | 225.45 | 168.3 | 168.3 | 1250 | 2240 | 240 |
| BC4-0118 | 170 | 230 | 160 | 160 | 1370 | 2360 | 255 |
| BC4-0119 | 170 | 240 | 130 | 130 | 1140 | 1830 | 196 |
| BC4-0114 | 180 | 260 | 168 | 168 | 1560 | 2500 | 265 |
| BC4-0098 | 190 | 260 | 168 | 168 | 1430 | 2600 | 270 |
| BC4-0109 | 190 | 270 | 200 | 200 | 1800 | 3150 | 325 |
| BC4-0116 | 190 | 280 | 200 | 200 | 2080 | 3250 | 335 |
| BC4-0113 | 200 | 270 | 170 | 170 | 1430 | 2700 | 275 |
| BC4-0051 | 200 | 270 | 200 | 200 | 1700 | 3200 | 335 |
| BC4-0095 | 200 | 280 | 170 | 170 | 1700 | 3000 | 305 |
| BC4-0092 | 200 | 280 | 200 | 200 | 1860 | 3350 | 345 |
| BC4-0106 | 200 | 290 | 192 | 192 | 1930 | 3200 | 320 |
| BC4-0117 | 220 | 310 | 192 | 192 | 1900 | 3550 | 355 |
| BC4-0097 | 220 | 310 | 225 | 225 | 2280 | 4050 | 400 |
| BC4-0112 | 230 | 330 | 206 | 206 | 2320 | 4000 | 390 |
| BC4-0099 | 240 | 330 | 220 | 220 | 2160 | 4300 | 425 |
| BC4-0110 | 260 | 370 | 220 | 220 | 2700 | 4650 | 465 |
| BC4-0107 | 280 | 390 | 220 | 220 | 2800 | 5000 | 490 |
| BC4-0100 | 280 | 390 | 275 | 275 | 3750 | 6950 | 670 |
| NNUD 6056 ECMAS/P53 | 280 | 420 | 250 | 250 | 3690 | 6550 | 640 |
| BC4-0094 | 300 | 420 | 300 | 300 | 4400 | 8300 | 800 |
| BC4-0124 | 300 | 420 | 300 | 300 | 4400 | 8300 | 800 |
| BC4-8050 | 340 | 450 | 250 | 250 | 2550 | 6000 | 550 |
| 314485 C | 340 | 480 | 350 | 350 | 4950 | 11000 | 1020 |
| BC4B 322261/HB1 | 340 | 500 | 370 | 370 | 5230 | 11800 | 1080 |
| 314563/VJ202 | 350 | 500 | 380 | 380 | 5280 | 11400 | 1040 |
| BC4B 322777/HB1 | 350 | 500 | 410 | 410 | 5830 | 13700 | 1200 |
| BC4B 326909 A/HA3 | 350 | 520 | 300 | 300 | 4680 | 9000 | 800 |
| BC4B 326909/HA3 | 350 | 520 | 300 | 300 | 4680 | 9000 | 800 |
| BC4-8022/HA1 | 355.6 | 482.6 | 269.87 | 269.87 | 2970 | 6400 | 585 |
| BC4B 457939 VAA | 356.67 | 550 | 400 | 400 | 5280 | 15000 | 1290 |
| BC2B 320075/VJ202 | 360 | 500 | 250 | 250 | 3910 | 7350 | 670 |
| BC2B 322217/VJ202 | 360 | 500 | 250 | 250 | 4400 | 8500 | 780 |
| BC4B 320989/HA3 | 380 | 540 | 400 | 380 | 6050 | 14000 | 1200 |
| BC4B 313511 B | 380 | 540 | 400 | 400 | 5720 | 13700 | 1180 |
| BC4B 326366/HB1 | 380 | 540 | 400 | 400 | 6160 | 15000 | 1290 |
| BC4B 322264/HB1 | 380 | 560 | 325 | 325 | 5230 | 10600 | 930 |
| 319352 | 382.5 | 590 | 450 | 450 | 6930 | 16300 | 1430 |
| BC4B 322498 | 390 | 540 | 320 | 320 | 5280 | 12200 | 1040 |
| BC4-8059 | 400 | 560 | 300 | 300 | 4680 | 10200 | 900 |
| 315802/VJ202 | 400 | 590 | 440 | 440 | 7920 | 16600 | 1400 |
| 313555 B/VJ202 | 420 | 580 | 320 | 320 | 4680 | 10800 | 950 |
| 313555 C/VJ202 | 420 | 580 | 320 | 320 | 4680 | 10800 | 950 |
| 313513 | 420 | 600 | 440 | 440 | 7210 | 17600 | 1460 |
| BC4B 326361 B/HA1 | 431.5 | 571.5 | 300 | 300 | 4460 | 10200 | 880 |
| BC4-8037/HA1VA907 | 431.5 | 571.5 | 310 | 310 | 4460 | 10200 | 880 |
| 635043 | 440 | 660 | 340 | 340 | 7210 | 13700 | 1080 |
| 315811 E | 450 | 590 | 300 | 300 | 3910 | 12000 | 1020 |
| 315196 A | 460 | 650 | 424 | 424 | 8250 | 18300 | 1530 |
| BC4B 322993 A/HA7 | 460 | 650 | 460 | 424 | 7810 | 18300 | 1530 |
| BC4B 326261/HA1 | 475 | 600 | 368 | 368 | 5500 | 14600 | 1270 |
| BC4-8003/HA1VA907 | 475 | 600 | 392 | 392 | 5500 | 14600 | 1270 |
| 319320 | 480 | 680 | 420 | 420 | 9130 | 19300 | 1500 |
| 316624 | 480 | 680 | 500 | 500 | 9900 | 25000 | 1930 |
| BC2B 326196/HA1VJ202 | 487.98 | 637 | 350 | 350 | 6440 | 15300 | 1220 |
| 319254/VJ202 | 500 | 650 | 260 | 260 | 4400 | 10200 | 850 |
| 316083 A | 500 | 670 | 450 | 450 | 8250 | 22000 | 1800 |
| BC4B 322039/HA1 | 500 | 670 | 480 | 450 | 8250 | 22000 | 1800 |
| BC4B 316515 | 500 | 680 | 450 | 450 | 8250 | 22000 | 1800 |
| BC4B 322066 | 500 | 720 | 400 | 400 | 8580 | 17600 | 1320 |
| BC4B 326853/HB1 | 500 | 738 | 500 | 500 | 10800 | 23200 | 1760 |
| BC4B 319411 | 510 | 680 | 500 | 500 | 9680 | 26000 | 2080 |
| BC4-8009/HB1 | 510 | 730 | 520 | 520 | 10200 | 22000 | 1660 |
| BC4-8007/HB1 | 510 | 760 | 550 | 550 | 12100 | 26500 | 2000 |
| 312844/VJ202 | 529.91 | 870 | 670 | 670 | 16800 | 33500 | 2450 |
| 313535 D | 536.176 | 762.03 | 558.8 | 558.8 | 11400 | 29000 | 2160 |
| 316691 | 550 | 740 | 510 | 510 | 11000 | 27000 | 2160 |
| BC4-8046/HB1 | 556 | 800 | 580 | 580 | 10500 | 25500 | 1860 |
| 313189 A | 559.84 | 920 | 710 | 710 | 20100 | 45500 | 3250 |
| BC4B 322930/HA4 | 560 | 820 | 600 | 600 | 14200 | 34000 | 2450 |
| BC4B 319446 | 571.627 | 870 | 640 | 640 | 13400 | 40500 | 2900 |
| 315175 C | 600 | 820 | 575 | 575 | 14000 | 36000 | 2550 |
| BC4B 322497/HA4 | 600 | 870 | 578 | 540 | 13200 | 31500 | 2240 |
| 315526 | 606.667 | 920 | 640 | 640 | 16500 | 45000 | 3100 |
| BC4-8041/HA4 | 620 | 820 | 475 | 475 | 10100 | 26500 | 1900 |
| BC4B 457969 | 633.334 | 960 | 680 | 680 | 16800 | 45000 | 3150 |
| 239509 FA | 660 | 820 | 440 | 440 | 8090 | 22800 | 1760 |
| BC4-8066/HA3 | 750 | 1090 | 750 | 750 | 21600 | 51000 | 3400 |
| 313685 B | 759 | 1210 | 740 | 740 | 25500 | 85000 | 3800 |
| 312979 D | 760 | 1080 | 790 | 790 | 23800 | 65500 | 4400 |
| BC4-8015/HB1 | 780 | 1070 | 780 | 780 | 24200 | 61000 | 4050 |
| BC4B 316341/HA4 | 820 | 1100 | 745 | 720 | 21200 | 57000 | 3750 |
| BC4B 320455 | 820 | 1130 | 800 | 800 | 24200 | 68000 | 4400 |
| 319313 | 820 | 1130 | 825 | 800 | 24200 | 68000 | 4400 |
| 315826 B | 850 | 1150 | 840 | 840 | 27500 | 75000 | 4800 |
| BC4-8021/HB1 | 850 | 1180 | 850 | 850 | 28100 | 73500 | 4650 |
| BC4-8067/HA3 | 900 | 1280 | 780 | 780 | 28600 | 64000 | 4050 |
| 315265 | 937.5 | 1270.25 | 825.5 | 825.5 | 28100 | 83000 | 5300 |
| BC4-8062/HA1 | 1040 | 1440 | 1000 | 1000 | 38000 | 93000 | 5700 |
| BC4-8016/HA4 | 1300 | 1655 | 890 | 880 | 40200 | 122000 | 7100 |
| BC4-8029/HA4 | 1350 | 1765 | 1360 | 1360 | 40200 | 122000 | 6950 |
| BC4-8042/HA4 | 1400 | 1780 | 1200 | 1200 | 52300 | 163000 | 9300 |
| BC4-8005/HA4 | 1400 | 1900 | 1360 | 1360 | 61600 | 183000 | 10400 |
