Chain Sprocket Hobs:
Chain Sprocket Hobs are usually supplied in un ground form to cut roller chain sprockets to din, American standards with the range from 1/4" to 3" pitch or 5 mm to 76.2 mm pitch. Multi start & ground from sprocket hobs can be had on request.
1.HSS Material: M2/M35
2.GB/JIS/ASA/DIN/ISO tooth profile of sprocket hob
3.Accuracy:class B,C
4,Specifications(mm) of Roller Chain Sprocket Gear Hobs
| Pitch ×Roller Dia. | Outside Dia. | Overall Length | Hole Dia. |
| 9.525×6.35 | 70 | 60 | 27 |
| 12.7×8.51 | 80 | 70 | |
| 15.875×10.16 | 90 | 85 | 32 |
| 19.05×11.91 | 100 | 100 | |
| 25.4×15.875 | 115 | 115 | |
| 31.75×19.05 | 140 | 140 | 40 |
| 38.1×22.23 | 140 | 150 | |
| 44.45×25.4 | 150 | 180 | |
| 50.8×28.58 | 160 | 200 | |
| 63.5×39.68 | 180 | 240 |
Roller Chain Sprocket Hob with S type and U type Tooth Profile
