Shimano UN55 Bottom Bracket British Thread, 122.5mm x 73mm
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Shimano UN55 Bottom Bracket British Thread, 122.5mm x 73mm
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Shimano UN55 Bottom Bracket British Thread
The Shimano UN55 Bottom Bracket British Thread is a great sealed cartridge bottom bracket with a square tapered spindle that is sturdy and robust construction.
Shimano UN55 Bottom Bracket British Thread : Extra Info
- Square tapered spindle
- Sealed bearing design
- Cartridge design for easy installation without the need for adjustment
- Highly accurate bearings for excellent durability and smooth operation
- Size: 122.5mm x 73mm
Material: Steel/Aluminium Type: Bottom Brackets Weight: 354g
Shimano UN55 Bottom Bracket British Thread, 122.5mm x 73mm is rated out of 5 by 5.Rated 4 out of 5 by DaddyPhil42 from Great product shame about Halfords Shamans BB is great, nice smooth action. Easy to fit.Date published: 2017-08-22Rated 1 out of 5 by Cephasbowes from Poor quality thread on one side One side would screw in no problem but not the other side. It wasn't the female thread on the bike as the side that did engage worked fine on both sides. Disappointing and will need taken back.Date published: 2017-08-02Rated 5 out of 5 by NonStick from Great quality item at a great price The bottom bracket on my "Trek 3700 (2009)" mountain bike was very worn, and had a lot of play in the bearings. The sealed cartridge had fractured into 2 parts, and was only held together because the ends were screwed into the shell. The BB still worked, but had a gritty, very loose feel when pedalling, and could have completely failed at any time. So I set about finding a replacement ... The original BB was an "SR SUNTOUR, BB8XCT-SQS-GI, 73x124mm, BC1.37x24T" I couldn't find a replacement that was 124x73mm. The nearest I could find was 122.5x73mm. Halfords were offering the best price for a BB of those dimensions, so I ordered one via their web-site for collection from my nearest store. It was a simple job to remove the old worn one and replace it with the new one. Then all that was necessary was to adjust the front and rear derailleurs to allow for the slightly shorter BB axle. It was such a transformation having a smoothly operating Bottom Bracket. To replace a Bottom Bracket you'll need the following tools: * To remove/insert the crank bolts - an 'allen key' or 'socket' (depending on the type of crank bolt) * To remove the cranks - a 'crank puller' or 'tapered crank puller' tool (my cranks were on so tight that a normal crank puller just stripped the threads, so I had to use a 'tapered crank puller') * To replace the bottom bracket - a 'bottom bracket' tool (there are different types so ensure you get one that's suitable for your BB) * To adjust the derailleurs - a 'small screwdriver'Date published: 2015-04-29Rated 4 out of 5 by ElDingo from Easy to fit, but a little noisy in operation Very easy to fit, with no adjustments necessary (initially, see below). The unit comes with a sleeve for the right hand end that is loaded with a gap filler, and the unit comes supplied with crank bolts, however these are hex bolt head type so I couldn't use them and had to reuse the bolts from the old bottom bracket. The unit has been fitted and used on a 20 mile ride - there is a creak when pressing hard on either pedal, so the gap filler clearly isn't doing the job. I plan to disassemble and fill the gap to stop the creak.Date published: 2014-08-31Rated 5 out of 5 by Chewie71 from Easy to install I bought this as a replacement for a worn out bottom bracket , amazing value for money as it was discounted on the website very pleased with the simplicity of fitting so now I don't have to worry for at least another yearDate published: 2013-12-31
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