IKO NA 497,TAFI 71712 MACHINED TYPE NEEDLE ROLLER BEARINGS
IKO NA 497,TAFI 71712 Description
| Shaft dia.
mm | Identification number | Mass (Ref.)
g |
d | |||||
| NA 49 | NA 69 | NA 48 | TAFI | TRI | GTRI | |||
| 5 | NA 495 ─ ─ | ─ ─ ─ | ─ ─ ─ | ─ TAFI 51512 TAFI 51516 | ─ ─ ─ | ─ ─ ─ | 7.3 11.9 16.7 | 5 5 5 |
| 6 | NA 496 ─ ─ | ─ ─ ─ | ─ ─ ─ | ─ TAFI 61612 TAFI 61616 | ─ ─ ─ | ─ ─ ─ | 9.1 13 17.5 | 6 6 6 |
| 7 | NA 497 ─ ─ | ─ ─ ─ | ─ ─ ─ | ─ TAFI 71712 TAFI 71716 | ─ ─ ─ | ─ ─ ─ | 11.2 14.3 19.2 | 7 7 7 |
| 8 | NA 498 | ─ | ─ | ─ | ─ | ─ | 15 | 8 |
| 9 | ─ ─ NA 499 | ─ ─ ─ | ─ ─ ─ | TAFI 91912 TAFI 91916 ─ | ─ ─ ─ | ─ ─ ─ | 16.7 22.5 16.7 | 9 9 9 |
| 10 | NA 4900 ─ ─ | ─ ─ ─ | ─ ─ ─ | ─ TAFI 102216 TAFI 102220 | ─ ─ ─ | ─ ─ ─ | 24 30 38 | 10 10 10 |
| 12 | NA 4901 ─ ─ ─ | ─ ─ ─ NA 6901 | ─ ─ ─ ─ | ─ TAFI 122416 TAFI 122420 ─ | ─ ─ ─ ─ | ─ ─ ─ ─ | 26.5 33.5 42.5 44.5 | 12 12 12 12 |
| 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. | |||||||||||
| 13 15 15 | 10 12 16 | ─ ─ ─ | 0.15 0.2 0.2 | 7 8 8 | 0.5 0.5 0.5 | 6.2 6.6 6.6 | 6.7 7.7 7.7 | 11.8 13.4 13.4 | 2 960 5 060 7 080 | 2 690 4 690 7 220 | 60 000 50 000 50 000 | LRT 5710 LRT 5812 LRT 5816 |
| 15 16 16 | 10 12 16 | ─ ─ ─ | 0.15 0.2 0.2 | 8 9 9 | 0.5 0.5 0.5 | 7.2 7.6 7.6 | 7.7 8.7 8.7 | 13.8 14.4 14.4 | 3 960 5 490 7 680 | 3 420 5 330 8 210 | 50 000 45 000 45 000 | LRT 6810 LRT 6912 LRT 6916 |
| 17 17 17 | 10 12 16 | ─ ─ ─ | 0.15 0.2 0.2 | 9 10 10 | 0.5 0.5 0.5 | 8.2 8.6 8.6 | 8.7 9.7 9.7 | 15.8 15.4 15.4 | 4 530 5 880 8 230 | 3 650 5 970 9 190 | 45 000 40 000 40 000 | LRT 7910 LRT 71012 LRT 71016 |
| 19 | 11 | ─ | 0.2 | 10 | 0.5 | 9.6 | 9.9 | 17.4 | 6 180 | 5 030 | 40 000 | LRT 81011 |
| 19 19 20 | 12 16 11 | ─ ─ ─ | 0.3 0.3 0.3 | 12 12 12 | 0.5 0.5 0.5 | 11 11 11 | 11.5 11.5 11.5 | 17 17 18 | 6 610 9 250 6 600 | 7 260 11 200 6 310 | 35 000 35 000 35 000 | LRT 91212 LRT 91216 LRT 91211 |
| 22 22 22 | 13 16 20 | ─ ─ ─ | 0.3 0.3 0.3 | 14 14 14 | 0.5 0.5 0.5 | 12 12 12 | 13 13 13 | 20 20 20 | 9 230 11 700 14 800 | 10 100 13 700 18 600 | 30 000 30 000 30 000 | LRT 101413 LRT 101416 LRT 101420 |
| 24 24 24 24 | 13 16 20 22 | ─ ─ ─ ─ | 0.3 0.3 0.3 0.3 | 16 16 16 16 | 0.5 0.5 0.5 0.5 | 14 14 14 14 | 15 15 15 15 | 22 22 22 22 | 9 660 12 300 15 500 17 100 | 11 100 15 100 20 400 23 000 | 25 000 25 000 25 000 25 000 | LRT 121613 LRT 121616 LRT 121620 LRT 121622 |
IKO NA 497,TAFI 71712 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. TAFI series with a bore diameter d of 22 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.
