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3" OD 15/16" or 1" ID Pulley, possibly from A Machine


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  • 3" OD 15/16" or 1" ID Pulley, possibly from A Machine

    Replacing a bad Ball wheel belt, ended up with a shattered pulley as well. The outer Diameter is 3" and the inner Diameter is 15/16" or 1". It was used on the ball wheel idler pulley assembly. Can't find this pulley in the A-2 stuff, does anyone know if this is a part from A model? I'd like the part number if anyone has it on hand. Roscoe, you probably know what this one is. Thanks in advance for any help!

  • #2
    Check Grainger. They have all sorts of sizes of sheaves. Make sure it is for a 5L belt.
    (Psalm 37:29) The righteous themselves will possess the earth, And they will reside forever upon it.


    • #3
      Thanks Popeye. The OD is 3" and the ID is actually 1". Until I can figure out what they were off of, these parts are pinsetter parts, and not something from Grainger, Here are my options...
      V-Belt Pulley, 3 In OD, 1 In Bore, 1GRV
      2.95 In OD, 1 In Bore, 2GRV
      Fixed Bore, 1 In, O D 3.25
      3.15 In OD, 1 In Bore, 2GRV

      I don't think that the 2 groove will be that bad, just have to get one of them lined up right. But we are pretty sure these are off of an A-Model maybe. Can't find it in the Digital Copy of the Green Book.


      • #4
        2.95 In OD, 1 In Bore, 2GRV

        the smaller you can go the slower the ball will go [ J M O ]


        • #5
          Yeah, that is the best one I have found. 2 grooves doesn't sound like a big deal. If that Zamak Alloy it is made of cracks it could always be pulled off an put on the other way around or just slid down so the 2nd groove can take the load. 2.95" is only 1/20th of an inch smaller. Thanks for the help and suggestions guys!


          • #6
            It seems that someone slowed your ball wheels down by putting the 3" sheaves on. I slowed my ball wheels down and used 3 1/2" sheaves. It wont matter if the sheave has 1 or 2 grooves but the size of the groove does matter. It needs to be 5/8" at the top of the groove. I agree with Wepauls on the size to order though.
            (Psalm 37:29) The righteous themselves will possess the earth, And they will reside forever upon it.


            • #7
              Use the Grainger number 3X850-5, it slightly larger than the one that broke. Provides a better speed.


              • #8
                Alright, thanks! We actually went to Swisher's (Farm & Home), and they had those pulleys and some of the 2.5 OD and 3/4 ID pulleys you used as well. Thanks! I'll be stocking up on these for the next time we lose some. Minus a few things here and there the machines have been running like champs for the past few months.


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