Shimano BB-UN300 Square Taper Bottom Bracket - BSA

11,98 € ~~21,95 €~~

Tax included Shipping calculated at checkout.

Axle length

107 mm 110 mm 122.5 mm 113 mm 127 mm 118 mm 115 mm 122 mm 117 mm

Product variants

Für jedes Fahrrad ab 500€

iXS

Trail EVO Helmet - black

38,40 € Kostenlos

Description

The BB-UN300 from Shimano is the official successor to the Shimano BB-UN55 bottom bracket and now comes with the second bottom bracket cap made of steel instead of plastic, offering higher quality bearings.

ABEC 3 bearings are installed instead of the previously installed ABEC 1 bearings.

Shell width: 68 mm
Axle widths: 107 mm, 110 mm, 113 mm, 115 mm, 117 mm, 118 mm, 122.5 mm, 127 mm
Materials: Steel (axle)
Axle mount: Square taper
Successor to the Shimano BB-UN55 bottom bracket
Different axle widths for cranks and chainlines

GPSR Contact: Shimano Inc., 3-77 Oimatsu-cho, Sakai-ku, Sakai City, JP 590-8577, Osaka, responsible person in the EU: Paul Lange & Co. GmbH, Hofener Straße 114, DE 70732, Stuttgart, info@paul-lange.de

Specifications

Axle length

113 mm, 110 mm, 117 mm, 122 mm, 122.5 mm, 127 mm, 118 mm, 107 mm, 115 mm
Case width

BSA 68 mm

Reviews in Other Languages

Correct but...

Quality is correct, shaft bearings and seals seems to be good stuff.
But the outer ring of left bearing was not perfectly centered with the centre steel spacer on mine, so when tightening the left cup, the spacer scratched the cup and made aluminium shavings. I had to remove everything, clean and assemble again...
Plus be aware that:
- the threads of the cups are very long, you'll need probably to re-thread your frame further or file some threads on the cups;
- the shoulder on the right cup is smaller than usual: only 36 mm diameter, not compatible with all frames or chainguard brackets (Shimano BB-UN55 is Ø39-40 mm as a matter of comparison).