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ZWA Double-row Cylindrical Roller Bearing

Double-row Cylindrical Roller Bearing

BORE 280-360mm

Double-row cylindrical roller bearing has cylindrical and tapered hole (code K) two structures. There are two main types in ZWA :NNU design and NN design. N Double inner rib and no outer rib. NNU type design inner ring without baffle and outer ring with double baffle. The tapered hole structure can adjust the radial clearance during installation.

Basic Type

double-row cylindrical roller bearing
double-row cylindrical roller bearing
double-row cylindrical roller bearing
double-row cylindrical roller bearing

the products include

Double-row Cylindrical Roller Bearing
d 280-360mm
Basic Size Basic load rating Designation(Design) Abutment and chamfer dimensions Mass
d D B rsmin FW EW dynamic static Cylindrical bore Tapered bore da(2) d1a dc min Da ra max
C Co
mm kN mm kg
280 350 69 1.1 - 329 445 1160 NN4856 - 293 - - 336 1 15.3
280 380 75 2.1 - 355 695 1460 NN3956 NN3956K 297 304 - 361 2 22.7
280 380 100 2.1 - 355 960 2230 NN4956 NN4956K 297 306 - 361 2 32.9
280 380 100 2.1 309 - 960 2230 NNU4956 NNU4956K 297 306 315 361 2 33
280 420 106 4 - 384 1080 2080 NN3056 NN3056K 302 311 - 395 3 51.1
280 420 106 4 320 - 1080 2080 NNU3056 - 302 - 326 395 3 51.4
280 460 146 5 - 413 1520 2790 NN3156 NN3156K 306 319 - 431 4 95.7
300 380 80 2.1 324 - 690 1760 NNU4860 - 318 - 331 361 2 21.7
300 420 118 3 - 388 1230 2870 NN4960 NN4960K 320 330 - 398 2.5 51.6
300 420 118 3 336 - 1230 2870 NNU4960 NNU4960K 320 330 343 398 2.5 51.9
300 460 118 4 - 418 1290 2460 NN3060 NN3060K 323 333 - 435 3 70.7
300 460 160 4 - 418 1920 4100 NN4060 NN4060K 323 336 - 435 3 97.6
300 500 160 5 - 448 1760 3150 NN3160 NN3160K 327 340 - 470 4 125
300 500 160 5 358 - 1760 3150 NNU3160 - 327 - 365 470 4 126
320 400 80 2.1 344 - 700 1840 NNU4864 - 338 - 351 381 2 22.8
320 440 118 3 - 408 1260 3050 NN4964 NN4964K 340 350 - 418 2.5 50.2
320 440 118 3 356 - 1260 3050 NNU4964 NNU4964K 340 350 363 418 2.5 54.9
320 480 121 4 - 438 1350 2670 NN3064 NN3064K 343 354 - 454 3 76.6
320 480 121 4 366 - 1350 2670 NNU3064 NNU3064K 343 354 373 454 3 76.9
320 480 160 4 367 - 1960 4300 NNU4064 - 343 - 374 454 3 103
320 540 176 5 384 - 2090 3750 NNU3164 NNU3164K 347 362 391 509 4 154
340 460 90 3 - 428 905 2020 NN3968 NN3968K 361 368 - 438 2.5 42.9
340 460 118 3 - 428 1350 3400 NN4968 NN4968K 361 371 - 438 2.5 52.1
340 460 118 3 376 - 1350 3400 NNU4968 - 361 - 383 438 2.5 57.8
340 520 133 5 - 473 1670 3300 NN3068 NN3068K 368 379 - 490 4 102
340 520 133 5 393 - 1670 3300 NNU3068 - 368 - 400 490 4 103
340 520 180 5 393 - 2420 5350 NNU4068 - 368 - 400 490 4 141
360 480 90 3 - 448 930 2130 NN3972 - 381 - - 457 2.5 44.9
360 480 118 3 396 - 1390 3550 NNU4972 - 381 - 403 457 2.5 60.6
360 540 134 5 - 493 1700 3450 NN3072 NN3072K 388 399 - 509 4 106
360 540 134 5 413 - 1700 3450 NNU3072 - 388 - 420 509 4 108
360 540 180 5 - 496 2530 5450 NN4072 NN4072K 388 403 - 509 4 132

Targeting at producing high-quality Bearings.

ZWA Chinese best bearing manufacturer

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