Square Type Bottom Bracket
BB-UN300-K
SHIMANO - Square Type Bottom Bracket - MTB - Chain Case Structure
Square Type Bottom Bracket
FEATURES
- SHIMANO quality/performance cartridge bearing square bottom bracket
- Better chainline stability with chain line stabilizer
- 3 structures available
- Standard, E-type, chain case options
- Adapter material: Aluminum
PRODUCT SPECIFICATIONS
| MODEL NO | BB-UN300-K |
|---|---|
| SERIES | SHIMANO ACERA T3000 Series |
| Remarks | * w/ Crank arm fixing screws spec. only ** w/ Crank arm fixing screws spec. is available *** w/ 0.7mm spacer |
| Structure|For chain case | ✔ |
| Spindle|Square type | ✔ |
|---|---|
| Axle length/shell width (mm)|MM110|68 (BC1.37) | ✔ |
| Axle length/shell width (mm)|117.5|68 (BC1.37) | ✔ |
| Axle length/shell width (mm)|XL118|68 (BC1.37) | X * |
| Axle length/shell width (mm)|D-NL 122|68 (BC1.37) | X ** |
| Axle length/shell width (mm)|D-EL 127|68 (BC1.37) | ✔ |
| Axle length/shell width (mm)|LL123|68 (BC1.37) | X *** |