⚙️ Elevate your drivetrain game with industrial-grade precision and durability!
The FOCMKEAS 21-tooth roller chain sprocket features a 1/4-inch pitch and a 12mm bore, crafted from hardened C45 carbon steel with a black oxide finish for superior wear and corrosion resistance. Designed as a Type B single-strand sprocket, it includes two set screws for secure shaft mounting, making it perfect for demanding industrial machinery and cycling drivetrain upgrades.
| ASIN | B0C713D4BX |
| Amazon Bestseller | #285,829 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #136 in Mechanical Roller Chain Sprockets |
| Batteries Included | No |
| Batteries Required? | No |
| Color | ブラック |
| Customer Reviews | 4.1 4.1 out of 5 stars (30) |
| Date First Available | September 11, 2023 |
| Item Weight | 75 g |
| Manufacturer | FOCMKEAS |
| Material | 炭素鋼 |
| Package Dimensions | 12 x 9.3 x 1.7 cm; 75 g |
| Part number | 21T/12mm Bore |
| Size | 21T/12mm Bore |
| Special Features | シングルストランド |
| Teeth Per Inch | 0.25 Inches |
N**N
10 mm shaft inner diameter, great fit on my flip sky 7070 motor!
R**W
Starts off fine then after use it begins to skip, may have to have someone tack weld at this point due to having used the item.
A**R
As described, good sprocket
H**R
The bore size is actually about 1mm larger than advertised so when tightening down the set screws, the gear twists on the shaft making the sprocket wobble when it spins and therefore unusable.
Trustpilot
Hace 3 semanas
Hace 1 día
