Ball and Roller Bearings - Ntn-snr.com

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Multi-Row Cylindrical Roller Bearings B r B r r r D d FW d D Ew d d Type NNU Cylindrical bore Tapered bore taper 1:12 Type NN Cylindrical bore Tapered bore taper 1:12 d 300500mm Boundary dimensions Basic load ratings Limiting speeds Bearing dynamic static dynamic static mm kN kgf rpm type NNU cylindrical tapered 1 2 d D B r s min C r C or C r C or grease oil bore bore 300 320 340 360 380 400 420 440 460 480 500 420 118 3 1,200 2,800 122,000 285,000 1,300 1,500 NNU4960 NNU4960K 460 118 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 NNU4964K 480 121 4 1,350 2,670 138,000 272,000 1,100 1,300 460 118 3 1,280 3,150 131,000 320,000 1,100 1,300 NNU4968 NNU4968K 520 133 5 1,620 3,200 165,000 325,000 1,100 1,300 480 118 3 1,290 3,250 131,000 330,000 1,100 1,300 NNU4972 NNU4972K 540 134 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 NNU4976K 560 135 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 NNU4980K 600 148 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 NNU4984K 620 150 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 NNU4988K 650 157 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 NNU4992K 680 163 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 NNU4996K 670 170 5 2,360 6,200 240,000 635,000 730 860 NNU49/500 NNU49/500K 1 "K" indicates bearings have tapered bore with a taper ratio of 1: 12. 2 Smallest allowable dimension for chamfer dimension r. B-118
Multi-Row Cylindrical Roller Bearings ra ra ra ra ra Da dc da dd Db da Db Db da db Equivalent bearing load dynamic PrFr static PorFr numbers Dimensions Abutment and fillet dimensions Mass approx. kg type NN mm mm type NNU type NN cylindrical tapered 1 d a d b d c d d D a D b r as cylindrical tapered cylindrical tapered bore bore F w E w min min max min max max min max bore bore bore bore NN4960 NN4960K 339 391 313 323 335 343 407 407 394 2.5 48.6 46.4 46.4 44.2 NN3060 NN3060K 418 316 326 444 421 3 70.8 68.6 NN4964 NN4964K 359 411 333 343 355 363 427 427 414 2.5 51.4 49.1 49 46.7 NN3064 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-119
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For New Technology Network R corpor
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Warranty NTN warrants, to the origi
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TECHNICAL DATA CONTENTS 1. Classifi
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Classification and Characteristics
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Bearing Selection Select bearing’
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Bearing Selection 2.3 Selection of
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Load Rating and Life 3. Load Rating
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Load Rating and Life where, Lna : A
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Bearing Load Calculation 4. Bearing
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Bearing Load Calculation 4.1.2 Chai
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Bearing Load Calculation 4.4 Equiva
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Bearing Load Calculation 4.5 Allowa
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Bearing Load Calculation Fr2 70 K
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Boundary Dimensions and Bearing Num
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Boundary Dimensions and Bearing Num
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Bearing Tolerances Table 6.3 Tolera
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Bearing Tolerances 6.2 Chamfer meas
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Bearing Tolerances 6.3 Bearing tole
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Bearing Fits 7.3.2 Recommended Fits
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Bearing Fits Table 7.2 (3) Housing
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Bearing Fits Table 7.5 Numeric valu
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Bearing Fits Table 7.6 Fits for inc
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Bearing Internal Clearance and Prel
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Allowable Speed 9. Allowable Speed
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Lubrication 11. Lubrication 11.1 Lu
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Lubrication (1) Base oil Natural mi
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Lubrication 11.4 Solid grease (For
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Lubrication Bearing operating Lubri
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External bearing sealing devices 12
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External bearing sealing devices Ty
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Bearing Materials 13.2 Cage materia
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Shaft and Housing Design 14.2 Beari
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Bearing Handling 15. Bearing Handli
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Bearing Handling a) Installation on
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Bearing Handling 15.4 Post installa
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Bearing Handling Fig. 15.24 shows t
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Bearing Damage and Corrective Measu
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Technical Data Axial displacement m
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Technical Data 17.4 Fitting surface
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A-100
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INDEX OF BEARING TABLES Deep Groove
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Deep Groove Ball Bearings Open type
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Deep Groove Ball Bearings bearing i
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Deep Groove Ball Bearings D D1 rN r
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Deep Groove Ball Bearings Equivalen
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Expansion Compensating Bearings Da
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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 Bearings Angul
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Angular Contact Ball Bearings 2. St
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Single and Duplex Arrangements Db r
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High Speed Single and Duplex Arrang
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Ultra-High Speed Angular Contact Ba
Page 169 and 170: B-67
Page 171 and 172: Ceramic Ball Angular Contact Ball B
Page 173 and 174: Four-Point Contact Ball Bearings QJ
Page 175 and 176: Double Row Angular Contact Ball Bea
Page 177: Double Row Angular Contact Ball Bea
Page 180 and 181: Self-Aligning Ball Bearings B r ra
Page 186 and 187: Adapters (for self-aligning ball be
Page 188 and 189: Adapters (for self-aligning ball be
Page 191 and 192: Cylindrical Roller Bearings Cylindr
Page 193 and 194: Cylindrical Roller Bearings 2. Stan
Page 195 and 196: Cylindrical Roller Bearings ra r1a
Page 213 and 214: L Type Loose Rib B2 B2 r1 r1 B1 d d
Page 215 and 216: L Type Loose Rib B2 B2 r1 r1 B1 d d
Page 217 and 218: Multi-Row Cylindrical Roller Bearin
Page 219: Multi-Row Cylindrical Roller Bearin
Page 223 and 224: Four-Row Cylindrical Roller Bearing
Page 231: Four-Row Cylindrical Roller Bearing
Page 234 and 235: Tapered Roller Bearings Table 1 (co
Page 236 and 237: Tapered Roller Bearings Inch Tapere
Page 238 and 239: Tapered Roller Bearings Inch Tapere
Page 240 and 241: Tapered Roller Bearings Metric syst
Page 258 and 259: Tapered Roller Bearings Inch system
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Tapered Roller Bearings Inch system
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Multi-Row Tapered Roller Bearings O
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Multi-Row Tapered Roller Bearings I
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Multi-Row Tapered Roller Bearings I
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Four Row Tapered Roller Bearings C2
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Spherical Roller Bearings 1. Types,
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Spherical Roller Bearings 5. Adapte
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Spherical Roller Bearings ra Da ra
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Adapter (For spherical roller beari
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Adapter (For spherical roller beari
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Withdrawal Sleeves (For spherical r
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Double Row Angular Contact Thrust B
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Double Row Angular Contact Thrust B
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High Speed Duplex Angular Contact T
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High Speed Duplex Angular Contact T
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Self-Aligning Roller Thrust Bearing
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Locknuts, Lockwashers & Lockplates
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Locknuts Reference withdrawal sleev
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Locknuts Reference bore no. 3 locko
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Nuts Reference withdrawal sleeve no
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Lockwashers Series AW ƒ r2 B2 ƒ1
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Lockwashers Series AWL ƒ r2 B2 ƒ
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Catalog List & Appendix Table
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Catalog List CATALOG TITLES CATALOG
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Appendix Table SI-customary unit co
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