KOYO Bearing

KOYO Bearings NN3172

KOYO BEARING
double-row cylindrical roller bearings

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KOYO BEARING

dBoundary dimensions

(mm)

 

Ew

Basic load ratings

(kN)

Cr                 C0r

Fatigue

load limit

(kN)

Cu

Bearing No.

NN                                                   NNU

Cylindrical          Cylindrical

bore                    bore

De-   sign  

 

min.

Mounting dimensions

(mm)

da                                db                               Da

max.          min.          max.          min.

 

ra

max.

(Refer.)

Mass (kg)

Cylindrical

bore

D           Br

min.

220300

370

80

120

2.1 4244

263

 

1

561

110

1

1

220

950

145

223

NNU4944

NNU3144

2

2

 231

236

241

260

248

268

289

354

2

3

16.7

52.5

240320

360

400

80

92

128

2.1 3

4

263

286

 

330

 

1

588

864

270

1

1

2

340

590

290

155

184

257

 

NN3048

NNU4948

 

NNU3148

2

1

2

 251

253

256

260

282

269

291

309

347

384

 

333

2

2.5

3

18.0

32.8

65.3

2603601002.1287 9412050228NNU49522 271284296349231.4
280380

420

100

106

2.1 4308 

384

 

1

976

090

2

2

200

010

239

220

 

NN3056

NNU4956

2

1

 291

296

305316369

404

 

387

2

3

33.1

51.2

300420

460

118

118

3

4

339 

418

1

1

170

290

2

2

720

460

285

266

 

NN3060

NNU4960

2

1

 313

316

335343407

444

 

421

2.5

3

51.9

70.8

320480

480

121

160

4

4

 

362

4381

1

350

970

2

4

670

040

283

414

NN3064

 

NNU4064

1

2

 336

336

 

358

 

367

464

464

4423

3

76.4

99.9

340460

520

118

180

3

5

372

387

1

2

270

370

2

4

930

810

301

486

NNU4968

NNU4068

2

2

 353

360

368

383

383

393

447

500

2.5

4

56.8

136

360480

540

540

540

600

118

134

180

266

192

3

5

5

5

5

390

407

407

 

538

1

1

2

3

2

340

560

430

930

820

3

3

5

9

5

050

090

050

410

400

314

315

503

903

534

 

NN3072

NN3172

NNU4972

 

NNU4072

72NNU54266

2

1

2

2-P

1

 373

380

380

380

380

387

403

403

394

413

413

467

520

520

520

580

 

497

543

2.5

4

4

4

4

58.2

107

142

219

218

38057030044234970117001 100—                                                                76NNU573002-P 3964174255543271
400600

600

600

148

170

200

5

5

5

 

452

453

2

2

2

030

930

970

4

6

6

140

200

280

414

611

608

NN3080 

80NNU60170  NNU4080

1

2-P

2

 420

420

420

 

447

448

 

458

459

580

580

580

5524

4

4

146

172

195

410600220547037009060856—                                                               82DC602202-P 4304654765804214

CMTG BEARING CO.,LIMITED.  has been engaged in bearing industry for many years, we provide a wide selections of brands, including FAG bearingSKF bearing,NSK bearing,Nachi bearing, TIMKEN bearing, THK Linear Guide and Linear Block …ect.

Bearing typies including standard bearing and non-standard bearings, linear bearings, automotive bearings, large bearings, railway bearings,spherical plain bearings, high temperature,super-precision bearings, as well as some rare types customized to your need.

Contact us if any bearing in demand . we will check and revert ASAP.

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