Ball and Roller Bearings

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Double Row Cylindrical Roller BearingsBrBrrrDd FWdD EwddCylindrical boreType NNUTapered boreCylindrical boreType NNTapered bored Boundary dimensions Basic load ratings Limiting speeds Bearingdynamic static dynamic staticmm kN kgf min -1 type NNUcylindrical tapered d D B rs min Cr Cor Cr Cor grease oil bore bore300320340360380400420440460480500420 118 3 1 200 2 800 122 000 285 000 1 300 1 500 NNU4960 NNU4960K460 118 4 1 330 2 560 135 000 261 000 1 200 1 500 440 118 3 1 240 2 970 126 000 305 000 1 200 1 400 NNU4964 NNU4964K480 121 4 1 350 2 670 138 000 272 000 1 100 1 300 460 118 3 1 270 3 150 130 000 320 000 1 100 1 300 NNU4968 NNU4968K520 133 5 1 620 3 200 165 000 325 000 1 100 1 300 480 118 3 1 270 3 250 130 000 330 000 1 100 1 300 NNU4972 NNU4972K540 134 5 1 650 3 300 169 000 340 000 1 000 1 200 520 140 4 1 630 4 050 167000 415 000 1 000 1 200 NNU4976 NNU4976K560 135 5 1 690 3 450 172 000 355 000 940 1 100 540 140 4 1 690 4 300 172 000 435 000 940 1 100 NNU4980 NNU4980K600 148 5 2 040 4 150 208 000 420 000 880 1 000 560 140 4 1 740 4 500 177 000 460 000 900 1 100 NNU4984 NNU4984K620 150 5 2 080 4 300 212 000 440 000 840 990 600 160 4 2 150 5 550 219 000 565 000 850 1 000 NNU4988 NNU4988K650 157 6 2 420 5 100 247 000 520 000 800 940 620 160 4 2 220 5 850 226 000 595 000 800 950 NNU4992 NNU4992K680 163 6 2 550 5 350 260 000 545 000 750 890 650 170 5 2 280 5 900 233 000 600 000 770 910 NNU4996 NNU4996K670 170 5 2 360 6 200 240 000 635 000 730 860 NNU49/500 NNU49/500K"K" indicates bearings have tapered bore with a taper ratio of 1: 12. Smallest allowable dimension for chamfer dimension r.B-106
Double Row Cylindrical Roller BearingsrararararaDa dcda ddDb da Db Db dadbDynamic equivalentradial loadPrFrStatic equivalentradial loadPorFrnumbers Dimensions Abutment and fillet dimensions Mass (approx.)kgtype NN mm mm type NNU type NNcylindrical tapered da db dc dd Da Db ras cylindrical tapered cylindrical taperedbore bore Fw Ew min min max min max max min max bore bore bore boreNN4960 NN4960K 339 391 313 323 335 343 407 407 394 2.5 48.6 46.4 46.4 44.2NN3060 NN3060K 418 316 326 444 421 3 70.8 68.6NN4964 NN4964K 359 411 333 343 355 363 427 427 414 2.5 51.4 49.1 49 46.7NN3064 NN3064K 438 336 346 464 441 3 76.2 73.5 379 353 363 375 383 447 2.5 54.2 51.7 NN3068 NN3068K 473 360 371 500 477 4 102 98.5 398 373 383 394 402 467 2.5 57 54.4 NN3072 NN3072K 493 380 391 520 497 4 107 103 425 396 408 420 430 504 3 84.5 80.6 NN3076 NN3076K 512 400 411 540 516 4 113 109 445 416 428 440 450 524 3 88.2 84.1 NN3080 NN3080K 547 420 432 580 551 4 146 141 465 436 448 460 470 544 3 92 87.7 NN3084 NN3084K 567 440 452 600 571 4 154 148 492 456 469 487 497 584 3 127 121 NN3088 NN3088K 596 464 477 626 601 5 178 172 512 476 489 507 517 604 3 132 126 NN3092 NN3092K 622 484 498 656 627 5 202 195 534 500 514 531 541 630 4 156 149 556 520 534 551 561 650 4 162 155 B-107
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For New Technology NetworkRcorporat
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WarrantyNTN warrants, to the origin
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TECHNICAL DATA CONTENTS1. Classific
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Classification and Characteristics
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Bearing SelectionSelect bearing’s
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Bearing Selection2.3 Selection of b
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Load Rating and Life3. Load Rating
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Load Rating and LifeThe basic stati
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Bearing Load CalculationTable 4.2 G
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Bearing Load Calculation4.3 Mean lo
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Bearing Load CalculationTable 4.5 B
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Bearing Load Calculation(Example 4)
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Boundary Dimensions and Bearing Num
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Boundary Dimensions and Bearing Num
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Bearing Tolerances6. Bearing Tolera
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Bearing TolerancesMean bore diamete
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Bearing TolerancesUnitmInner ringax
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Bearing TolerancesTMaster cupsub-un
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Bearing TolerancesInner ringaxial r
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Bearing TolerancesTable 6.8 Toleran
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Bearing Tolerances!d!d2ddd+!dd+!dBT
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Bearing Fits7. Bearing Fits7.1 Fitt
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Bearing Fits(4) A particular type o
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Bearing FitsTable 7.3 Standard fits
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Bearing FitsA-5512T12.5T13.5T16.5T2
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Bearing FitsTable 7.7 General fitti
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Bearing Internal Clearance and Prel
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Nominal bore diameterdmm10241024303
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Friction and Temperature Rise10. Fr
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Lubricationviscosity base oil are b
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LubricationAluminum greaseAI soapNo
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Lubrication11.5 Oil lubricationOil
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LubricationTable 11.9 Factor KExpel
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External bearing sealing devicesTyp
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Bearing Materials13. Bearing Materi
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Shaft and Housing Design14. Shaft a
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Shaft and Housing Design14.2.3 Thru
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Bearing Handling280280Diametric exp
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Bearing HandlingTable 15.1 Installa
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Bearing HandlingLarge bearings, ins
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A-95
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Bearing Damage and Corrective Measu
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Bearing Damage and Corrective Measu
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Technical DataThis data is based on
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Technical Data17.5 Fitting surface
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Ball and Roller Bearings
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Tapered Roller Bearings !!!!!!!!!!!
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!Deep Groove Ball Bearings2. Standa
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Deep Groove Ball BearingsBrrDdd Op
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Deep Groove Ball Bearingsd Boundar
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Deep Groove Ball BearingsBrrarraDdD
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Expansion Compensating BearingsBrrD
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AC BearingsBrrDdd Open typeShielde
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!Miniature and Extra Small Bearings
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!Miniature and Extra Small Bearings
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Miniature and Extra Small Ball Bear
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Angular Contact Ball Bearings1.2 Fo
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Single and Duplex Angular Contact B
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Page 162 and 163: Single and Duplex Angular Contact B
Page 164 and 165: Four-Point Contact Ball BearingsQJ
Page 166 and 167: Double Row Angular Contact Ball Bea
Page 168 and 169: Double Row Angular Contact Ball Bea
Page 171 and 172: Self-Aligning Ball Bearings1. Desig
Page 173 and 174: Self-Aligning Ball BearingsEquivale
Page 179 and 180: Adapters(for self-aligning ball bea
Page 181: AdaptersB-75
Page 184 and 185: Cylindrical Roller BearingsTable 2
Page 186 and 187: Cylindrical Roller BearingsBBrr1rr1
Page 204 and 205: L Type Loose RibL type collar ringB
Page 206 and 207: L Type Loose RibL type collar ringB
Page 208 and 209: Double Row Cylindrical Roller Beari
Page 210 and 211: Double Row Cylindrical Roller Beari
Page 214 and 215: Four-Row Cylindrical Roller Bearing
Page 225 and 226: Tapered Roller BearingsSingle row t
Page 227 and 228: Tapered Roller Bearings5. ECO-Top t
Page 229 and 230: Tapered Roller BearingsInch series
Page 235 and 236: Tapered Roller BearingsSaSbr1aEquiv
Page 253 and 254: Tapered Roller BearingsDa dbr1arada
Page 255 and 256: Tapered Roller BearingsDa dbr1arada
Page 257 and 258: Tapered Roller Bearingsr1araEquival
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Tapered Roller Bearingsr1araEquival
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Tapered Roller BearingsDa dbr1arada
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Double Row Tapered Roller BearingsS
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Four Row Tapered Roller BearingsBea
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Spherical Roller Bearings2. Standar
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Spherical Roller BearingsBrrDddCyli
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Adapter(For spherical roller bearin
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Withdrawal Sleeves(For spherical ro
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Thrust BearingsSingle direction thr
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Thrust BearingsB-257
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Single Direction Thrust Ball Bearin
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Single Direction Thrust Ball Bearin
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Spherical Roller Thrust Bearingsdar
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Locknuts, Lockwashers& Lockplates
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LocknutsReferencewithdrawal sleeve
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LocknutsReferencebore no. lock- Sh
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Locknutsr1gbhsrB30˚ Gd2dPd6d1Beari
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NutsReferencewithdrawal sleeve no.A
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LockwashersSeries AWƒ25˚r2B2ƒ1B1
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LockwashersSeries AWLƒ25˚r2B2ƒ1B
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Snap rings and grooves for rolling
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Snap rings and grooves for rolling
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Catalog List and Appendix Table Con
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Catalog ListCATALOG TITLESCATALOG N
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D-41234567890001020304/2205/2806/32
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Appendix TableAppendix table 2: Com
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Appendix TableAppendix table 5: Dim
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Appendix TableAppendix table 6: Dim
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Appendix TableAppendix table 7: Bas
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Appendix TableAppendix table 9: Kgf
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D-16Rockwell hardnessBrinell hardne
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Ball and Roller Bearings

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