Bottom Bracket
08-02-15 | 01:03 PM
#1
Thread Starter
Senior Member
Joined: Jul 2015
Posts: 1,616
Likes: 4
From: North East Tennessee
Bikes: Basso Luguna, Fuji Nevada
Bottom Bracket
I'm sure it's been asked and answered but I can't find it. I currently have a BB that is marked BB-7420-ST that is nearing it's end and need to order a replacement. Are other bottom brackets styles such as UN-53, UN-54, UN25/26 interchangeable with the BB-7420? I know mine is 68x110 and assume the 1.37x24T is diameter and thread pitch, I've looked at the different square tapers and I'm pretty sure mine is just the standard JIS. Just from the pictures all these look the same, I'd rather just get a bit more input before ordering.For farther reference this is going on my Fuji Nevada, unknown year but guessing 2002-2006 (red, black and white paint and no numbers like 1.0,2.0,3.0 like current models use) with Suntour SR crankset, riveted chain rings.
08-02-15 | 01:34 PM
#2
Really Old Senior Member
Joined: Feb 2007
Posts: 14,667
Likes: 1,904
From: Mid Willamette Valley, Orygun
Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds. 2019 Giant Explore E+3
Googling BB-7420-ST comes up with a FSA BB.
Should be "standard" square taper.
Should be "standard" square taper.
08-02-15 | 07:29 PM
#3
Thread Starter
Senior Member
Joined: Jul 2015
Posts: 1,616
Likes: 4
From: North East Tennessee
Bikes: Basso Luguna, Fuji Nevada
I ordered this one New Tange 68x110 110 5mm Square Taper Bottom Bracket BB Fixie Fixed Gear | eBay , the seller said it would replace mine.
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