IKO TAF 192720,RNA 4902 MACHINED TYPE NEEDLE ROLLER BEARINGS
IKO TAF 192720,RNA 4902 Description
| Shaft dia.
mm | Identification number | Mass (Ref.)
g | |||||
| RNA 49 | RNA 69 | RNA 48 | TAF | TR | GTR | ||
| 16 | RNA 4901 ─ ─ ─ | ─ ─ ─ RNA 6901 | ─ ─ ─ ─ | ─ TAF 162416 TAF 162420 ─ | ─ ─ ─ ─ | ─ ─ ─ ─ | 18.1 23 29 30 |
| 17 | ─ ─ | ─ ─ | ─ ─ | TAF 172516 TAF 172520 | ─ ─ | ─ ─ | 24.5 30.5 |
| 18 | RNA 49/14 ─ ─ | ─ ─ ─ | ─ ─ ─ | ─ TAF 182616 TAF 182620 | ─ ─ ─ | ─ ─ ─ | 19.9 25.5 32 |
| 19 | ─ ─ | ─ ─ | ─ ─ | TAF 192716 TAF 192720 | ─ ─ | ─ ─ | 27 34 |
|
20 | RNA 4902 ─ ─ ─ | ─ ─ ─ RNA 6902 | ─ ─ ─ ─ | ─ TAF 202816 TAF 202820 ─ | ─ ─ ─ ─ | ─ ─ ─ ─ | 21.5 27.5 35.5 37 |
| ─ ─ | ─ ─ | ─ ─ | ─ ─ | TR 203320 ─ | ─ GTR 203320 | 59.5 69 | |
| 21 | ─ ─ | ─ ─ | ─ ─ | TAF 212916 TAF 212920 | ─ ─ | ─ ─ | 29 36 |
|
22 | RNA 4903 ─ ─ ─ | ─ ─ ─ RNA 6903 | ─ ─ ─ ─ | ─ TAF 223016 TAF 223020 ─ | ─ ─ ─ ─ | ─ ─ ─ ─ | 23.5 30 37.5 40.5 |
| ─ ─ | ─ ─ | ─ ─ | ─ ─ | TR 223425 ─ | ─ GTR 223425 | 73.5 87 | |
| Boundary dimensions | mm | Standard mounting dimension Da Max. mm | Basic dynamic load rating C
N | Basic static load rating C0 N | Allowable rotational speed(2)
min-1 | ||
| Fw | D | C | (1) rs min | ||||
| 16 | 24 | 13 | 0.3 | 22 | 9 660 | 11 100 | 25 000 |
| 16 | 24 | 16 | 0.3 | 22 | 12 300 | 15 100 | 25 000 |
| 16 | 24 | 20 | 0.3 | 22 | 15 500 | 20 400 | 25 000 |
| 16 | 24 | 22 | 0.3 | 22 | 17 100 | 23 000 | 25 000 |
| 17 | 25 | 16 | 0.3 | 23 | 12 900 | 16 300 | 25 000 |
| 17 | 25 | 20 | 0.3 | 23 | 16 300 | 22 000 | 25 000 |
| 18 | 26 | 13 | 0.3 | 24 | 10 600 | 12 800 | 20 000 |
| 18 | 26 | 16 | 0.3 | 24 | 13 400 | 17 500 | 20 000 |
| 18 | 26 | 20 | 0.3 | 24 | 17 000 | 23 600 | 20 000 |
| 19 | 27 | 16 | 0.3 | 25 | 14 000 | 18 700 | 20 000 |
| 19 | 27 | 20 | 0.3 | 25 | 17 700 | 25 300 | 20 000 |
| 20 | 28 | 13 | 0.3 | 26 | 10 900 | 13 800 | 20 000 |
| 20 | 28 | 16 | 0.3 | 26 | 13 900 | 18 800 | 20 000 |
| 20 | 28 | 20 | 0.3 | 26 | 17 600 | 25 400 | 20 000 |
| 20 | 28 | 23 | 0.3 | 26 | 19 300 | 28 800 | 20 000 |
| 20 | 33 | 20 | 0.3 | 31 | 24 300 | 26 500 | 20 000 |
| 20 | 33 | 20 | 0.3 | 31 | 29 200 | 37 200 | 7 500 |
| 21 | 29 | 16 | 0.3 | 27 | 14 400 | 20 000 | 19 000 |
| 21 | 29 | 20 | 0.3 | 27 | 18 200 | 27 100 | 19 000 |
| 22 | 30 | 13 | 0.3 | 28 | 11 700 | 15 600 | 18 000 |
| 22 | 30 | 16 | 0.3 | 28 | 14 900 | 21 200 | 18 000 |
| 22 | 30 | 20 | 0.3 | 28 | 18 900 | 28 700 | 18 000 |
| 22 | 30 | 23 | 0.3 | 28 | 20 800 | 32 500 | 18 000 |
| 22 | 34 | 25 | 0.3 | 32 | 29 100 | 36 800 | 18 000 |
| 22 | 34 | 25 | 0.3 | 32 | 37 900 | 57 800 | 7 000 |
IKO TAF 192720,RNA 4902 Nots
Notes(1) Minimum allowable value of chamfer dimension r
(2) Allowable rotational speed applies to oil lubrication. For grease lubrication, a maximum of 60% of this value is allowable.
Remarks1. TAF series with a roller set bore diameter Fw of 26 mm or less have no oil hole. In others, the outer ring has an oil groove and an
oil hole.
2. No grease is prepacked. Perform proper lubrication.
