Ball and Roller Bearings - Ntn-snr.com

More documents

Recommendations

Info

Tapered Roller Bearings Table 1 (continued) Type Characteristics (4) Concerning ET and 4T Types ET and 4T tapered roller bearings are made of high-purity case hardened steel and are manufactured with a special heat treatment developed by NTN. As a result, wear life and reliability have been improved to where life coefficient, a2, values can be applied as follows: 4T tapered roller bearings:a2 1.4 ET tapered roller bearings:a2 1.9 Single row tapered roller bearings Furthermore, although not listed in the dimension tables, ET type bearings are also manufactured for some extra small bearing sizes. For details, consult NTN Engineering. (5) These bearings are constructed to have a high capacity for radial loads, axial loads, and combined loads. The larger the contact angle, the greater the axial load capacity becomes. When a pure radial load is placed on the bearings, an induced load in the axial direction is also generated, and so these bearings are generally used in pairs arranged face to face. (6) When used in pairs, proper internal clearances and preload can be set by adjusting the distance between the two bearings' inner and outer rings. (7) Inner and outer rings are separable, enabling them to be installed individually with the desired interference fit. (8) Tapered roller bearings are also manufactured with flanges attached to the outer rings. For more details, contact NTN Engineering. (Refer to Diagram 3) Diagram 3. Double row tapered roller bearings (1) Outward facing types (using double row outer rings) and inward facing types (using double row inner rings) are both available, and they have been adjusted so that each type's internal clearance values are fixed. Therefore, only parts with identical manufacturing numbers can be used and they must be assembled according to their code numbers. (Refer to Diagram 4) (2) The axial internal clearances for double and duplex bearings are listed in Table 8 on pages A-58, 59. (3) Pairs of duplex single row tapered roller bearings are also manufactured. For more details, contact NTN Engineering. Inward facing Outward facing Diagram 4. (1) As shown in Diagram 5, four row tapered roller bearings are constructed of two double row inner rings and two double row outer rings. Four row tapered roller bearings (2) Bearings wear life is greatly improved through the use of induction hardening and, for large-sized bearings, hollow rollers and pin type cages. (3) Used primarily where heavy load capacity is important, and in the roller necks of rolling mills. Diagram 5. B-132
Tapered Roller Bearings 2. Standard cage type In general, pressed cages are used in tapered roller bearings. However, for large sized bearings, machined or pin type cages are also used; and for small sized bearings, molded resin cages are also used. 3. Allowable misalignment Single row and back-to-back arrangement: 0.0005rad1.5' Face-to-face: 0.001rad 3.5' In situations where large displacement is necessary, please consult NTN Engineering. B-133
Page 1 and 2:
For New Technology Network R corpor
Page 3 and 4:
Warranty NTN warrants, to the origi
Page 5 and 6:
TECHNICAL DATA CONTENTS 1. Classifi
Page 7 and 8:
Classification and Characteristics
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Bearing Selection Select bearing’
Page 15 and 16:
Bearing Selection 2.3 Selection of
Page 17 and 18:
Load Rating and Life 3. Load Rating
Page 19 and 20:
Load Rating and Life where, Lna : A
Page 21 and 22:
Bearing Load Calculation 4. Bearing
Page 23 and 24:
Bearing Load Calculation 4.1.2 Chai
Page 25 and 26:
Bearing Load Calculation 4.4 Equiva
Page 27 and 28:
Bearing Load Calculation 4.5 Allowa
Page 29 and 30:
Bearing Load Calculation Fr2 70 K
Page 31 and 32:
Boundary Dimensions and Bearing Num
Page 33:
Boundary Dimensions and Bearing Num
Page 36 and 37:
Bearing Tolerances Table 6.3 Tolera
Page 38 and 39:
Page 40 and 41:
Page 42 and 43:
Page 44 and 45:
Page 46 and 47:
Bearing Tolerances 6.2 Chamfer meas
Page 48 and 49:
Bearing Tolerances 6.3 Bearing tole
Page 50 and 51:
Bearing Fits 7.3.2 Recommended Fits
Page 52 and 53:
Bearing Fits Table 7.2 (3) Housing
Page 54 and 55:
Bearing Fits Table 7.5 Numeric valu
Page 56 and 57:
Bearing Fits Table 7.6 Fits for inc
Page 58 and 59:
Bearing Internal Clearance and Prel
Page 60 and 61:
Page 62 and 63:
Page 64 and 65:
Page 66 and 67:
Page 68 and 69:
Page 70 and 71:
Allowable Speed 9. Allowable Speed
Page 72 and 73:
Lubrication 11. Lubrication 11.1 Lu
Page 74 and 75:
Lubrication (1) Base oil Natural mi
Page 76 and 77:
Lubrication 11.4 Solid grease (For
Page 78 and 79:
Lubrication Bearing operating Lubri
Page 80 and 81:
External bearing sealing devices 12
Page 82 and 83:
External bearing sealing devices Ty
Page 84 and 85:
Bearing Materials 13.2 Cage materia
Page 86 and 87:
Shaft and Housing Design 14.2 Beari
Page 88 and 89:
Bearing Handling 15. Bearing Handli
Page 90 and 91:
Bearing Handling a) Installation on
Page 92 and 93:
Bearing Handling 15.4 Post installa
Page 94 and 95:
Bearing Handling Fig. 15.24 shows t
Page 96 and 97:
Bearing Damage and Corrective Measu
Page 98 and 99:
Technical Data Axial displacement m
Page 100 and 101:
Technical Data 17.4 Fitting surface
Page 102 and 103:
A-100
Page 104 and 105:
INDEX OF BEARING TABLES Deep Groove
Page 107 and 108:
Deep Groove Ball Bearings Open type
Page 109 and 110:
Deep Groove Ball Bearings bearing i
Page 111 and 112:
Deep Groove Ball Bearings D D1 rN r
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Deep Groove Ball Bearings Equivalen
Page 125 and 126:
Page 127 and 128:
Page 129:
Expansion Compensating Bearings Da
Page 132 and 133:
Miniature and Extra Small Bearings
Page 134 and 135:
Miniature and Extra Small Ball Bear
Page 136 and 137:
Page 138 and 139:
Page 140 and 141:
Page 143 and 144:
Angular Contact Ball Bearings Angul
Page 145 and 146:
Angular Contact Ball Bearings 2. St
Page 147 and 148:
Single and Duplex Arrangements Db r
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
High Speed Single and Duplex Arrang
Page 161 and 162:
Page 163 and 164:
Page 165 and 166:
Page 167 and 168:
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 182 and 183:
Self-Aligning Ball Bearings B r ra
Page 184 and 185: 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 223 and 224: Four-Row Cylindrical Roller Bearing
Page 231: Four-Row Cylindrical Roller Bearing
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
Page 284 and 285:
Tapered Roller Bearings Inch system
Page 286 and 287:
Page 288 and 289:
Page 290 and 291:
Page 292 and 293:
Page 294 and 295:
Page 296 and 297:
Multi-Row Tapered Roller Bearings O
Page 298 and 299:
Page 300 and 301:
Page 302 and 303:
Page 304 and 305:
Page 306 and 307:
Page 308 and 309:
Page 310 and 311:
Multi-Row Tapered Roller Bearings I
Page 312 and 313:
Multi-Row Tapered Roller Bearings I
Page 314 and 315:
Four Row Tapered Roller Bearings C2
Page 316 and 317:
Page 318 and 319:
Page 320 and 321:
Page 322 and 323:
Page 324 and 325:
Page 326 and 327:
Page 328 and 329:
Page 331 and 332:
Spherical Roller Bearings 1. Types,
Page 333 and 334:
Spherical Roller Bearings 5. Adapte
Page 335 and 336:
Spherical Roller Bearings ra Da ra
Page 337 and 338:
Page 339 and 340:
Page 341 and 342:
Page 343 and 344:
Page 345 and 346:
Page 347 and 348:
Page 349 and 350:
Page 351 and 352:
Page 353 and 354:
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
Page 361 and 362:
Page 363 and 364:
Page 365 and 366:
Page 367 and 368:
Double Row Angular Contact Thrust B
Page 369 and 370:
Double Row Angular Contact Thrust B
Page 371 and 372:
High Speed Duplex Angular Contact T
Page 373 and 374:
High Speed Duplex Angular Contact T
Page 375 and 376:
Self-Aligning Roller Thrust Bearing
Page 377 and 378:
Page 379 and 380:
Page 381 and 382:
Locknuts, Lockwashers & Lockplates
Page 383 and 384:
Locknuts Reference withdrawal sleev
Page 385 and 386:
Locknuts Reference bore no. 3 locko
Page 387 and 388:
Nuts Reference withdrawal sleeve no
Page 390 and 391:
Lockwashers Series AW ƒ r2 B2 ƒ1
Page 392 and 393:
Lockwashers Series AWL ƒ r2 B2 ƒ
Page 394 and 395:
Catalog List & Appendix Table
Page 396 and 397:
Catalog List CATALOG TITLES CATALOG
Page 398:
Appendix Table SI-customary unit co
show all

Ball and Roller Bearings - Ntn-snr.com

Create successful ePaper yourself

Delete template?

Save as template?