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Cylindrical roller bearing > Double row cylindrical roller bearings > Double column cylinder (standard) 25-850 millimeters

Double column cylinder (standard) 25-850 millimeters

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Product drawing

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drawing

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Product parameters

External dimensions（mm)Rated load(KN)Rated speed min-1Bearing codeInstallation size(mm)weight(kg)
dDBγ(minimum)FWEWCrCorgreaseoilCylindrical holeconical boreDa
(minimum）		da
(maximum）		d1a
(minimum)		dc
(minimum)		da
(maximum）		Da
(minimum）		γa
(maximum)		(refer to)
240 400 128 4 — 358 1170 2040 — — NN 3148 NN 3148 K 262 — 272 — — 376 3 -
240 360 118 3 — 330 1240 2600 — — NN 4048 NN 4048 K 259 — 269 — — 340 2.5 -
240 360 92 3 274 — 855 1600 — — NNU 3048 NNU 3048 K 253 259 256 280 347 — 2.5 -
240 360 92 3 — 330 855 1600 1500 1800 NN 3048 NN 3048 K 253 — 256 — 347 334 2.5 -
240 320 80 2.1 263 — 625 1450 1600 2000 NNU 4948 NNU 4948 K 251 262 254 269 309 — 2 -
240 320 80 2.1 — 300 625 1450 — — NN 4948 NN 4948 K 251 — 254 — 309 302 2 -
240 320 60 2.1 — 300 460 975 — — NN 3948 NN 3948 K 257 — 262 — — 302 2 -
220 340 118 3 — 310 1190 2400 — — NN 4044 NN 4044 K 238 — 248 — — 320 2.5 -
220 340 90 3 — 310 815 1480 1700 2000 NN 3044 NN 3044 K 233 — 236 — 327 313 2.5 -
220 300 80 2.1 243 — 600 1330 1700 2200 NNU 4944 NNU 4944 K 231 242 234 248 289 — 2 -

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