Announcement

Collapse
No announcement yet.

Snubber bolts

Collapse

Adsense Classic 1

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Snubber bolts

    Why do I keep breaking snubber bolts? I am using 1/4-20x1 grade 8 bolts with a washer under the head and using flange nuts on the bottoms. I have the rubber spacers/pads in place too, yet I seems to break 3 or 4 every week. The bolts are grade 9 bolts, although they are the "import" bolts, not domestic bolts.

    Marty - Pro Bowl West
    56 Jap A-2's Qubica VDB's
    2 Kustodian Walkers
    http://s1196.photobucket.com/albums/aa408/a2mechanic

  • #2
    I used to have this problem also. Drill your holes out to 5/16 and put the bigger bolts in. I did this years ago and have not had much problem since. I would stay with the grade 8 bolts.
    (Psalm 37:29) The righteous themselves will possess the earth, And they will reside forever upon it.

    Comment


    • #3
      Marty:
      I believe the word "import" is the crux of your problem. Grade eights USA seldom fail.
      rfm

      Comment


      • #4
        Originally posted by Roscoe View Post
        Marty:
        I believe the word "import" is the crux of your problem. Grade eights USA seldom fail.
        I was thinking the same thing - I think I am going to buy some from Grainger, "unbreako" is the brand name...along with the brand name price

        Marty - Pro Bowl West
        56 Jap A-2's Qubica VDB's
        2 Kustodian Walkers
        http://s1196.photobucket.com/albums/aa408/a2mechanic

        Comment


        • #5
          I had the same problem and did the same thing as popeye 5 yrs ago and have never broken a bolt since (or loose hardware)........and no broken snubbers either. Thart was a concern about making the slot bigger, but I havn't broken one yet.
          Nick

          Comment


          • #6
            I, too, have made the switch to domestic grade 8 bolts, and haven't had any problems. Yes, they're a little more expensive; however, with the savings over ordinary bolts, the savings will pay off over a period of time. And, they'll save your bacon during a tourney or important league meeting.

            Comment


            • #7
              On AMF we need to go from 1/4 to 5/16 to get durability, I think you guys are right, not made like they use to be.

              Comment


              • #8
                If the domestic 1/4" or some other 1/4" hardware will work without breaking....then that is the easier fix and try that route first. I remeber seeing some special bolts at a center that closed down that had a special logo on the top of them and said super titanium on the top of them. I did not know where to get them.


                If you are still having issues you can always change to 5/16" gr 8....no problems after that, but a little work is involved
                Nick

                Comment


                • #9
                  I was buying a golden colored 1/4 20 bolt years ago supposedly grade eight was a cheap fake frum true value hardware store ..broke so many in a week couldnt keep count.i think quality at one time made a snubber already cut out for 5/16 size bolts dont think anyone else does now

                  Comment


                  • #10
                    Quite a few years ago i reamed out snubbers and drilled and installed grade 8's in 2 houses, 28 lanes total and i only know of 1 bolt that has broken in that time, probably 15 yrs or so.
                    Brent V
                    Hi-tech Repairs-Duck tape & ty raps

                    Comment


                    • #11
                      Originally posted by bowlamech View Post
                      I was buying a golden colored 1/4 20 bolt years ago supposedly grade eight was a cheap fake
                      Thats is exactly what I have. When I got here they all had 1/4 carrage bolts in them that were breaking left and right so I went to these grade 8 that I now know are imported bolts (like $4 per 100)
                      Going to call the girl up and she what she will do about it.

                      Marty - Pro Bowl West
                      56 Jap A-2's Qubica VDB's
                      2 Kustodian Walkers
                      http://s1196.photobucket.com/albums/aa408/a2mechanic

                      Comment


                      • #12
                        Imported grade 8s and domestic grade 8s are two different animals. I have found that the imported grade 8s equal our standard (no-grade) bolts. I believe that it's how the bolts are heat treated. In any case, the imports don't measure up to our domestic bolts. Just because a bolt is less expensive doesn't make it a better product. (Basically, you get what you pay for.)

                        Comment


                        • #13
                          Mechanick, Those special bolts you are talking about are probably Lawson products "supertanium" line of fasteners. I have used them in the past with great success. The only catch is they are "superpricey". www.lawsonproducts.com

                          Comment


                          • #14
                            I believe that they mah vae been from that company....they had a pentagon with lines around it and the word supertitanium on the head


                            p54008def.jpg
                            Nick

                            Comment


                            • #15
                              This is funny, when I started I had problems with the Brunswick grade 8's breaking. I replaced them all with grade 2-3's carriage bolts and for the next 20 years never had another one break.

                              Of course, I named my machines after women..........

                              Comment

                              Topic Starter RibbonScript

                              Collapse

                              Adsense Classic 2

                              Collapse
                              widgetinstance 666 (Related Topics) skipped due to lack of content & hide_module_if_empty option.
                               

                              Well this is a first.

                              We all from time to time have one of those “wow I’ve never seen THAT before” moments. Well today was one of those for me when my night tech texts me to say lane 16 is out...
                               

                              Ball return wheel guide roller removal.

                              Hey guys, i could just use a bit of advice trying to get this part out, first time I've had to do one of these. I got it to move a few turns but its come to a point where it has...
                               

                              Even old mechanics find something new.

                              All my years working on these things I never had this happen…… until last week. ...
                               

                              82-90XL Frontend Gearbox Parts - Rebuild Woes

                              We have 5 of the 088000365 replacement gear kits on the shelf, and I pulled two gearboxes off machines earlier this week, so I thought I'd try my hand at rebuilding them and save...
                               

                              Prolane damage

                              Can this be repaired?
                               

                              LED Ball Lights

                              Made an LED conversion for A2's and Frameworx masks. It can also be modded for the Harmony masks to accept 2 x 5mm led's and/or a 12v supply. Once I'm happy with the performance/design...
                              Working...
                              X