FBN Standard Sprockets (Japanese Standard) FBN 15B
| Chain Type | No.15 | |
| Pitch | (P) | 4.7625 mm |
| Internal Width | (W) | 2.38 mm |
| Roller Dia. | (Dr) | 2.48 mm |
| Teeth width | (T) | 2.0 mm |
| Outside Dia. Do |
Pitch Dia. Dp |
Hub | a | Sprockets No. | Bore dia. H7 |
Weight (g) |
||
| BD | BL | Type | Teeth No. | |||||
| 39.0 | 36.49 | 30 | 16 | 7 | FBN 15B | 24 | 10,12,15 | 88 |
|---|---|---|---|---|---|---|---|---|
| 42.0 | 39.51 | 33 | 16 | 7 | 26 | 12,15,16 | 104 | |
| 45.0 | 42.54 | 37 | 16 | 7 | 28 | 12,15,16 | 131 | |
| 48.0 | 45.56 | 39 | 16 | 7 | 30 | 12,15,16 | 147 | |
| 52.5 | 50.10 | 40 | 18 | 8 | 33 | 12,15,16 | 178 | |
| 55.5 | 53.13 | 40 | 18 | 8 | 35 | 12,15,16 | 182 | |
| Bore dia H7 | Keyway bXt2 |
Setscrew³ M |
| 5~7 | | | 3 |
| 8~9 | | | 4 |
| 10 | 3X1.4 | 4 |
| 12 | 4X1.8 | 5 |
| 14~17 | 5X2.3 | 6 |
| 18~22 | 6X2.8 | 6 |
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