IKO NA 4934,NA 4834 MACHINED TYPE NEEDLE ROLLER BEARINGS
IKO NA 4934,NA 4834 Description
| Shaft dia.
mm | Identification number | Mass (Ref.)
g |
d | |||||
| NA 49 | NA 69 | NA 48 | TAFI | TRI | GTRI | |||
| 160 | ─ NA 4932 | ─ ─ | NA 4832 ─ | ─ ─ | ─ ─ | ─ ─ | 3 050 6 750 | 160 160 |
| 170 | ─ NA 4934 | ─ ─ | NA 4834 ─ | ─ ─ | ─ ─ | ─ ─ | 4 120 7 110 | 170 170 |
| 180 | ─ NA 4936 | ─ ─ | NA 4836 ─ | ─ ─ | ─ ─ | ─ ─ | 4 340 10 200 | 180 180 |
| 190 | ─ NA 4938 | ─ ─ | NA 4838 ─ | ─ ─ | ─ ─ | ─ ─ | 5 760 10 700 | 190 190 |
| 200 | ─ NA 4940 | ─ ─ | NA 4840 ─ | ─ ─ | ─ ─ | ─ ─ | 6 040 15 400 | 200 200 |
| 220 | ─ NA 4944 | ─ ─ | NA 4844 ─ | ─ ─ | ─ ─ | ─ ─ | 6 570 16 700 | 220 220 |
| 240 | ─ NA 4948 | ─ ─ | NA 4848 ─ | ─ ─ | ─ ─ | ─ ─ | 10 200 18 000 | 240 240 |
| 260 | ─ NA 4952 | ─ ─ | NA 4852 ─ | ─ ─ | ─ ─ | ─ ─ | 11 000 31 100 | 260 260 |
| 280 | ─ NA 4956 | ─ ─ | NA 4856 ─ | ─ ─ | ─ ─ | ─ ─ | 15 800 33 100 | 280 280 |
| 300 | ─ NA 4960 | ─ ─ | NA 4860 ─ | ─ ─ | ─ ─ | ─ ─ | 22 300 51 400 | 300 300 |
| 320 | ─ NA 4964 | ─ ─ | NA 4864 ─ | ─ ─ | ─ ─ | ─ ─ | 23 700 54 400 | 320 320 |
| 340 | ─ NA 4968 | ─ ─ | NA 4868 ─ | ─ ─ | ─ ─ | ─ ─ | 25 000 57 300 | 340 340 |
| Boundary dimensions mm | Standard mounting dimensions mm | Basic dynamic load rating C N | Basic static load rating C0 N | Allowable rotational speed(3)
min-1 | Assembled inner ring | |||||||
| D | C | B | (1) rs min | Fw | (2) S | da | Da Max. | |||||
| Min. | Max. | |||||||||||
| 200 220 | 40 60 | ─ ─ | 1.1 2 | 175 180 | 1.5 3 | 166.5 169 | 173 178 | 193.5 211 | 173 000 337 000 | 474 000 761 000 | 2 500 1 900 | LRT 16017540 LRT 16018060 |
| 215 230 | 45 60 | ─ ─ | 1.1 2 | 185 190 | 1.5 3 | 176.5 179 | 183 188 | 208.5 221 | 211 000 347 000 | 567 000 810 000 | 1 900 1 900 | LRT 17018545 LRT 17019060 |
| 225 250 | 45 69 | ─ ─ | 1.1 2 | 195 205 | 1.5 3 | 186.5 189 | 193 203 | 218.5 241 | 218 000 434 000 | 602 000 989 000 | 1 900 1 900 | LRT 18019545 LRT 18020569 |
| 240 260 | 50 69 | ─ ─ | 1.5 2 | 210 215 | 1.5 3 | 198 199 | 208 213 | 232 251 | 249 000 440 000 | 726 000 1 020 000 | 1 800 1 700 | LRT 19021050 LRT 19021569 |
| 250 280 | 50 80 | ─ ─ | 1.5 2.1 | 220 225 | 1.5 4 | 208 211 | 218 223 | 242 269 | 255 000 518 000 | 766 000 1 120 000 | 1 600 1 600 | LRT 20022050 LRT 20022580 |
| 270 300 | 50 80 | ─ ─ | 1.5 2.1 | 240 245 | 1.5 4 | 228 231 | 238 243 | 262 289 | 266 000 536 000 | 833 000 1 200 000 | 1 500 1 400 | LRT 22024050 LRT 22024580 |
| 300 320 | 60 80 | ─ ─ | 2 2.1 | 265 265 | 2 4 | 249 251 | 262 262 | 291 309 | 345 000 565 000 | 1 150 000 1 320 000 | 1 300 1 300 | LRT 24026560 LRT 24026580 |
| 320 360 | 60 100 | ─ ─ | 2 2.1 | 285 290 | 2 4 | 269 271 | 282 287 | 311 349 | 354 000 847 000 | 1 220 000 1 900 000 | 1 100 1 100 | LRT 26028560 LRT 260290100 |
| 350 380 | 69 100 | ─ ─ | 2 2.1 | 305 310 | 2.5 4 | 289 291 | 302 307 | 341 369 | 486 000 877 000 | 1 550 000 2 040 000 | 950 950 | LRT 28030569 LRT 280310100 |
| 380 420 | 80 118 | ─ ─ | 2.1 3 | 330 340 | 2.5 4 | 311 313 | 327 337 | 369 407 | 610 000 1 130 000 | 1 900 000 2 650 000 | 900 850 | LRT 30033080 LRT 300340118 |
| 400 440 | 80 118 | ─ ─ | 2.1 3 | 350 360 | 2.5 4 | 331 333 | 347 357 | 389 427 | 635 000 1 170 000 | 2 040 000 2 830 000 | 750 750 | LRT 32035080 LRT 320360118 |
| 420 460 | 80 118 | ─ ─ | 2.1 3 | 370 380 | 2.5 4 | 351 353 | 367 377 | 409 447 | 651 000 1 220 000 | 2 140 000 3 020 000 | 700 700 | LRT 34037080 LRT 340380118 |
IKO NA 4934,NA 4834 Nots
Notes(1) Minimum allowable value of chamfer dimension r
(2) Allowable axial shift amount of inner ring to outer ring
(3) Allowable rotational speed applies to oil lubrication. For grease lubrication, a maximum of 60% of this value is allowable.
Remarks1. The outer ring has an oil groove and an oil hole.
2. No grease is prepacked. Perform proper lubrication.
