UN26 crank arm fixing bolt

iBike2
iBike2 Posts: 3
edited June 2010 in MTB workshop & tech
Hi all,

I have recently decided to upgrade my old spindle style bottom bracket, the cup and cone type with the bearings unsealed. The spindle has threads on it which are used with nuts to hold the crank arms on with.

I ordered a UN26 recently after checking the pdf data sheet

http://www.shimanoservicecentre.co.uk/S ... B-UN26.PDF

which states Item 1 as being the left hand adaptor and Item 2 crank arm fixing bolt (2off).

The problem and question I have is, why did i not receive the crank arm fixing bolts with my BB-UN26 which i ordered. are these bolts so easily come by that they are simply left omitted from bottom bracket orders in general, or has something else happened here? I did receive the left hand adaptor, which appears to be a cheap looking plastic thing that probably won't last two minutes with my weight >.>

Anyways, I just started commuting with my MTB, so plz excuse me if i seem a little... clueless.

Cheers for now

Comments

  • nicklouse
    nicklouse Posts: 50,673
    it does depend on where you ordered them from.

    standard M8 bolts.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • iBike2
    iBike2 Posts: 3
    Is there any specific length i should be choosing?

    Thanks for the quick reply.
  • nicklouse
    nicklouse Posts: 50,673
    nope they are a standard length.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown

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