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    • Belt Chart

    20 Series: 3/4" Top Width

    30° Symmetric (15° + 15°) (20C & 21D-6" & 21D-T') .40 Thick Kevlar Type

    		 20driven-belt.gif

    RECOMMENDED BELT SPECIFICATIONS
     

    C.D. SETTING

    		    

    Part #

    		 6" Dia.Driven 7" Dia.Driven Belt C.C. Fractional Equlv.
    203578 6 15/16 - 7 No Fit 27.36 27 23/64
    203579 7 1/8 - 7 3/16 6 1/4 - 6 5/16 28.32 28 21/64
    203580 7 9/16 - 7 5/8 6 13/16 - 6 7/8 29.28 29 9/32
    203581 8 3/16 - 8 1/4 7 5/16 - 7 3/8 30.25 30 1/4
    203582 8 11/16 - 8 3/4 7 3/4 - 7 13/16 31.23 31 15/64
    203583 9 3/16 - 9 1/4 8 5/16 - 8 3/8 32.20 32 13/64
    203584 9 5/8 - 9 11/16 8 3/4 - 8 13/16 33.18 33 11/64
    203585 9 15/16 - 10 9 3/16 - 9 1/4 33.78 33 25/32
    203586 10 3/4 - 10 13/16 9 13/16 - 9 7/8 35.14 35 9/64
    203587 11 11/16 - 11 3/4 10 15/16 - 11 37.11 37 7/64
    203588 13 1/16 - 13 1/8 12 1/8 - 12 3/16 39.77 39 25/32

     

    30 Series: 3/4" Top Width  20 - 1/2" Asymmetrical


    (30 & 31D-6" & 31D-7") .40 Thick  Kevlar Type

    		 30driven-belt.gif
     

    RECOMMENDED BELT SPECIFICATIONS

    C.D. SETTINGS

    		  Belt
    Fractional
     Part # 6" Dia Driven. 7" Dia. Driven  O.C.
     Equiv.
     203589 6 5/8 - 6 11/16 No Fit 27.03
    27
    1/32
     203590 7 1/8 - 7 3/16 6 1/4 - 6 5/16 28.32
    28 21/64
     203591 7 9/16 - 7 5/8 6 13/16 - 6 7/8 29.28
    29
    9/32
     203592 8 3/16 - 8 1/4 7 5/16 - 7 3/8 30.25
    30 1/4
     203593 8 11/16 - 8 3/4 7 3/4 -7 13/16 31.23
    31 15/64
     203594 9 3/16 - 9 1/4 8 5/16 - 8 3/8 32.20
    32 13/64
     203595 9 5/8 - 9 11/16 8 3/4 - 8 13/16 33.18
    33
    11/64
     203596 9 15/16 - 10 9 3/16 - 9 1/4 33.78
    33 25/32
     203597 10 3/4 - 10 13/16 9 13/16 - 9 7/8 35.14
    35 9/64
     203598 11 11/16 - 11 3/4 10 15/16 - 10 15/16 37.11
    37
    7/64
     203599 13 1/16 - 13 1/8 12 1/8 - 12 3/16 39.77
    39 25/32

     *Always run the 2-1/2"
    side nearest the engine (the 2-1/2" side appears nearly flat and must be mated to the like appearing sheave half).

     

    40/44D Series - Symmetric

    .45 Thick Kevlar Type
    40-44dbelt.gif
    RECOMMENDED BELT SPECIFICATIONS
    Part #
    # Marked on belt
    40 C.D.
    44 C.D.
    Belt O.C.
     40-75 
    7-1/4
    clear.gif 
    31.950
     40-80 
    7-7/8
    		  
    32.900
     40-85 
    8-3/16" 
    		  
    33.870
     40-90 
    8-5/8" 
    7-5/8"
    34.830
     40-95  
    9-3/8" 
    8-3/16"
    35.800
     40-100 
    9-3/4"
    8-11/16"
    36.780
     40-105 
    10-1/4"
    9-3/16"
    37.750
     40-110 
    10-1/2"
    9-5/8"
    38.650
     40-120 
    11-1/2"
    10-9/16" 
    40.500
     40-130 
    12-5/8"
    11-11/16" 
    42.660
    40-140  
    13-3/4"
    12-5/8"
    44.530