Shimano BB-UN300 Square Taper Bottom Bracket
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The Shimano BB-UN300 bottom bracket is a sealed-bearing cartridge with a BSA thread and a JIS square taper interface. It is a replacement part fitted into the frame in place of the worn unit. The spindle is available in lengths of 107, 110, 113, 115, 118, 122, 122,5 and 127 mm and has a square cross-section to fit square taper cranks.
Before buying, check the frame's bottom bracket shell width, the spindle length and that the cranks have a JIS square taper interface. Crank bolts are not included, so check that you already have them or obtain them separately.
| Model | BB-UN300 |
|---|---|
| Code | SHM-EBBUN300B07X |
| Type | Sealed-bearing cartridge |
| Shell width | 68 mm; 73 mm with a 113, 118 or 122 mm spindle |
| Spindle length | 107, 110, 113, 115, 118, 122, 122,5 and 127 mm |
| Spindle interface | Square taper JIS (square cross-section) |
| Crank bolts | Not included |
Founded in 1921 in Sakai, Japan, by Shozaburo Shimano, Shimano is still based in the same city today. For cyclists, it makes drivetrains, brakes, wheels, pedals and cycling shoes. Its history in bicycle components began with the production of freewheels in 1922.
Manufacturer
Shimano Inc.
3-77 Oimatsu-cho, Sakai-ku, Sakai City, Osaka 590-8577, Japan
bike.shimano.com/it-ITproduct-safety.html
EU responsible person
Shimano Europe B.V.
High Tech Campus 92, 5656 AG Eindhoven, The Netherlands
info@shimano-europe.com
Product identifier
EAN 4550170619282 · SKU 203007