IKO RNA 4908UU,RNA 4908U MACHINED TYPE NEEDLE ROLLER BEARINGS
IKO RNA 4908UU,RNA 4908U Description
| Shaft dia.
mm | Identification number | Mass (Ref.)
g | Boundary dimensions mm | ||||||
| With two seals | With one seal | With two seals | With one seal | Fw | D | C | (1) rs min | ||
| 48 | RNA 4908UU ─ | RNA 4908U ─ | ─ RNA 6908UU | ─ RNA 6908U | 150 270 | 48 48 | 62 62 | 22 40 | 0.6 0.6 |
| 50 | RNA 49/42UU | RNA 49/42U | ─ | ─ | 173 | 50 | 65 | 22 | 0.6 |
| 52 | RNA 4909UU ─ | RNA 4909U ─ | − RNA 6909UU | ─ RNA 6909U | 197 355 | 52 52 | 68 68 | 22 40 | 0.6 0.6 |
| 55 | RNA 49/48UU | RNA 49/48U | ─ | ─ | 187 | 55 | 70 | 22 | 0.6 |
| 58 | RNA 4910UU ─ | RNA 4910U ─ | ─ RNA 6910UU | ─ RNA 6910U | 177 320 | 58 58 | 72 72 | 22 40 | 0.6 0.6 |
| 60 | RNA 49/52UU | RNA 49/52U | ─ | ─ | 200 | 60 | 75 | 22 | 0.6 |
| 63 | RNA 4911UU ─ | RNA 4911U ─ | ─ RNA 6911UU | ─ RNA 6911U | 265 470 | 63 63 | 80 80 | 25 45 | 1 1 |
| 65 | RNA 49/58UU | RNA 49/58U | ─ | ─ | 275 | 65 | 82 | 25 | 1 |
| 68 | RNA 4912UU ─ | RNA 4912U ─ | ─ RNA 6912UU | ─ RNA 6912U | 285 505 | 68 68 | 85 85 | 25 45 | 1 1 |
| 70 | RNA 49/62UU | RNA 49/62U | ─ | ─ | 320 | 70 | 88 | 25 | 1 |
| 72 | RNA 4913UU ─ | RNA 4913U ─ | ─ RNA 6913UU | ─ RNA 6913U | 325 580 | 72 72 | 90 90 | 25 45 | 1 1 |
| 75 | RNA 49/68UU | RNA 49/68U | ─ | ─ | 465 | 75 | 95 | 30 | 1 |
| 80 | RNA 4914UU ─ | RNA 4914U ─ | ─ RNA 6914UU | ─ RNA 6914U | 495 910 | 80 80 | 100 100 | 30 54 | 1 1 |
| 85 | RNA 4915UU ─ | RNA 4915U ─ | ─ RNA 6915UU | ─ RNA 6915U | 520 960 | 85 85 | 105 105 | 30 54 | 1 1 |
| Standard mounting dimension Da Max. mm | Basic dynamic load rating C
N | Basic static load rating C0 N | Allowable rotational speed(2)
min-1 |
| 58 58 | 37 200 63 700 | 58 400 117 000 | 4 000 4 000 |
| 61 | 38 000 | 60 900 | 4 000 |
| 64 64 | 38 900 66 600 | 63 400 127 000 | 3 500 3 500 |
| 66 | 39 600 | 66 100 | 3 500 |
| 68 68 | 41 300 70 800 | 71 100 142 000 | 3 500 3 500 |
| 71 | 42 100 | 73 600 | 3 000 |
| 75 75 | 52 200 89 400 | 85 700 171 000 | 3 000 3 000 |
| 77 | 53 400 | 89 200 | 3 000 |
| 80 80 | 54 500 93 400 | 92 800 186 000 | 3 000 3 000 |
| 83 | 55 700 | 96 300 | 2 500 |
| 85 85 | 56 800 97 400 | 99 800 200 000 | 2 500 2 500 |
| 90 | 73 900 | 133 000 | 2 500 |
| 95 95 | 76 900 124 000 | 143 000 281 000 | 2 500 2 500 |
| 100 100 | 79 600 128 000 | 153 000 299 000 | 2 000 2 000 |
IKO RNA 4908UU,RNA 4908U Nots
Notes(1) Minimum allowable value of chamfer dimension r
(2) Allowable rotational speed applies to grease lubrication.
Remarks1. The outer ring has an oil groove and an oil hole.
2. Bearings are provided with prepacked grease. Bearings with a seal on one side are not provided with prepacked grease. Perform
proper lubrication for use.
