Installing a Shimano Cartridge Bottom Bracket BB-UN26 for Square Taper Cranks - YouTube
SHIMANO BB-UN26 73*113 MM MTB Road Bike Bicycle Bottom Bracket Square ISIS UN101 | eBay
Finally got around to replacing a UN26 BB with a UN300. I was shocked at how decent this thing is for $20. Bearings are the same size carts as Phil Wood. But
Shimano BB-UN26 Square taper Bottom Bracket 68 x 122mm
Shimano BB-UN26 JIS Square Taper Bottom Bracket English 68x127.5mm Road Bike - Walmart.com
Shimano UN26 Square Taper Bottom Bracket - Cambria Bike