Ball and Roller Bearings - Ntn-snr.com

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Four Row Tapered Roller Bearings C2 r r1 B2 D Da d da Sa d 304.800360mm Boundary dimensions Basic load ratings dynamic static dynamic static mm kN kgf 1 1 d D B 2 C 2 r 1s min r s min C r C or C r C or 304.800 304.902 305.003 317.500 320 330 330.200 333.375 340 341.312 342.900 343.052 346.075 347.662 355 355.600 360 495.300 342.900 349.250 3.3 6.4 3,650 9,400 370,000 960,000 412.648 266.700 266.700 3.3 3.3 2,610 7,450 267,000 760,000 438.048 280.990 279.400 3.3 4.8 2,630 6,900 268,000 700,000 422.275 269.875 269.875 1.5 3.3 2,260 7,050 231,000 715,000 447.675 327.025 327.025 3.3 3.3 2,820 8,600 287,000 880,000 460 338 338 5 4 2,940 8,650 300,000 880,000 470 340 340 2.5 2.5 3,150 10,200 320,000 1,040,000 510 340 340 6 6 3,900 9,650 395,000 985,000 482.600 306.388 311.150 1.5 3.3 2,810 7,900 287,000 805,000 469.900 342.900 342.900 3.3 3.3 4,000 11,000 405,000 1,130,000 480 350 350 6 5 3,450 10,400 350,000 1,060,000 457.098 254.000 254.000 1.5 3.3 2,370 6,900 241,000 705,000 533.400 307.985 301.625 3.3 3.3 3,150 6,900 320,000 705,000 457.098 254.000 254.000 1.5 3.3 2,370 6,900 241,000 705,000 488.950 358.775 358.775 3.3 3.3 4,350 12,700 445,000 1,300,000 469.900 292.100 292.100 3.3 3.3 3,200 9,100 325,000 925,000 490 316 316 1.5 3.3 3,500 10,000 355,000 1,020,000 444.500 241.300 241.300 1.5 3.3 1,760 6,200 180,000 635,000 457.200 252.412 252.412 1.5 3.3 2,470 7,850 251,000 800,000 482.600 265.112 269.875 1.5 3.3 2,790 7,650 285,000 780,000 488.950 317.500 317.500 1.5 3.3 3,500 10,000 350,000 1,020,000 508 370 370 6 5 3,700 11,200 380,000 1,140,000 600 540 540 5 5 6,700 18,100 685,000 1,840,000 1 Minimum allowable dimension for chamfer dimension r or r1. B-218
Four Row Tapered Roller Bearings Bearing numbers Abutment and fillet dimensions Mass mm kg d a D a S a approx. E-EE724121D/724195/724196D 330 450 3 273 E-M257248D/M257210/M257210D 325 388 5 107 E-M757449D/M757410/M757410D 328 407 7 139 E-LM258649D/LM258610/LM258610D 333.3 398 7 110 E-HM259049D/HM259010/HM259010D 339.6 418 5 170 E-625964 355 420.5 7 183 E-CRO-6604 366 440 5.5 141 E-CRO-6602 366 469 5 221 E-EE526131D/526190/526191D 351 448 3 197 E-HM261049D/HM261010/HM261010D 357 439 5 187 E-625968 373 440 7 200 E-LM761648D/LM761610/LM761610D 359 432 5 125 E-EE971355D/972100/972103D 378 502 11 252 E-LM761649D/LM761610/LM761610D 361 432 5 117 E-HM262749D/HM262710/HM262710DG2 371 456 6 227 E-M262449D/M262410/M262410D 369 443 8 148 E-CRO-7105 378 450 7 170 E-L163149D/L163110/L163110D 370 422 6.5 89.5 E-LM263149D/LM263110/LM263110D 372 434 6 106 E-LM763449D/LM763410/LM763410D 375 453 3 145 E-M263349D/M263310/M263310D 374 459 5 173 E-625972 394 466.5 7 236 E-CRO-7210 400 550 8 520 Note: 1. Bearing numbers marked "" designate inch system bearings. 2. Bearing numbers marked "" designate bearing with hollow rollers and pin type cages. B-219
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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
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B-67
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Ceramic Ball Angular Contact Ball B
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Four-Point Contact Ball Bearings QJ
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Double Row Angular Contact Ball Bea
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Double Row Angular Contact Ball Bea
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Self-Aligning Ball Bearings B r ra
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Adapters (for self-aligning ball be
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Adapters (for self-aligning ball be
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Cylindrical Roller Bearings Cylindr
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Cylindrical Roller Bearings 2. Stan
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Cylindrical Roller Bearings ra r1a
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L Type Loose Rib B2 B2 r1 r1 B1 d d
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L Type Loose Rib B2 B2 r1 r1 B1 d d
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Multi-Row Cylindrical Roller Bearin
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Four-Row Cylindrical Roller Bearing
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Tapered Roller Bearings Table 1 (co
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Tapered Roller Bearings Inch Tapere
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Tapered Roller Bearings Inch Tapere
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Tapered Roller Bearings Metric syst
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Tapered Roller Bearings Inch system
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Page 270 and 271: Tapered Roller Bearings Inch system
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Page 314 and 315: Four Row Tapered Roller Bearings C2
Page 331 and 332: Spherical Roller Bearings 1. Types,
Page 333 and 334: Spherical Roller Bearings 5. Adapte
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Page 355 and 356: Adapter (For spherical roller beari
Page 357 and 358: Adapter (For spherical roller beari
Page 359 and 360: Withdrawal Sleeves (For spherical r
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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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