Shimano Square Type Bottom Bracket

About the Shimano Square Type Bottom Bracket

SHIMANO - Square Type Bottom Bracket - MTB - Standard Structure

Square Type Bottom Bracket

68 x 122.5mm w/o Bolts / BB - UN300

FEATURES

• SHIMANO quality/performance cartridge bearing square bottom bracket • Better chainline stability with chain line stabiliser • 3 structures available • Standard, E-type, chain case options • Adapter material: Aluminum

Specifications

MODEL NO

BB-UN300

SERIES

SHIMANO

Remarks

* w/ Crank arm fixing bolts spec. only ** w/ Crank arm fixing bolts spec. is available

Structure_Standard

✔

Axle length/shell width (mm)_107_68 (BC1.37)

✔

Axle length/shell width (mm)_LL113_73 (BC1.37)

✔

Axle length/shell width (mm)_D-H_68 (BC1.37)

X *

Axle length/shell width (mm)_117.5_68 (BC1.37)

X **

Axle length/shell width (mm)_XL118_68 (BC1.37)

X **

Axle length/shell width (mm)_XL118_73 mm

✔

Axle length/shell width (mm)_D-NL 122_68 (BC1.37)

X **

Axle length/shell width (mm)_D-NL 122_73 (BC1.37)

X *

Axle length/shell width (mm)_D-EL 127_68 (BC1.37)

X *

Axle length/shell width (mm)_LL123_68 (BC1.37)

✔

Axle length/shell width (mm)_LL123_73 (BC1.37)

✔

Axle length/shell width (mm)_LL113_68 (BC1.37)

X **

Axle length/shell width (mm)_MM110_68 (BC1.37)

X **

Spindle_Square type

✔

Brand

Shimano