tru-cut sprockets flame cut steel


Tru-Cut flame cut sprockets are more accurate, tougher and harder than cast tooth  sprockets. Widely used with "Engineering-Class" chains for slow speed power trans mission and conveyor applications, these sprockets will also effectively and economically operate with ANSI  roller chains (size RC #120 through RC #240).

TRU-CUT steel sprockets have many advantages

  • Being   made   from   high  carbon  steel  plate,  Tru-Cut  sprockets   have  a  300%   higher  tensile strength than cast iron sprockets .
  • Steel sprockets are unbreakable.
  • Since l045 plate is used, the "as burned" tooth hardness of flame-cuts averages 30-3 5 Rockwell C, and is harder than all iron sprockets except heat treated alloy iron castings which approach 40 Rockwell C, The tooth hardness of Tru-Cut sprockets can be increased to 55 Rockwell C by flame hardening. Harder tooth  surfaces will wear  longer.
  • When used with ANSI roller chains the hard tooth surface (30-35  Rockwell C) resulting from the flame cutting process is a distinct advantage . Plate steel sprockets with machined teeth are much softer and having them heat treated to increase hardness costs extra .
  • Tru-Cut sprockets usually cost more than cast iron sprockets, but the quality, service and longer life more than  offset the  higher  initial cost.
  • Tru-Cut sprockets are normally available in three to four weeks . This includes so-called special sprockets, regardless of pattern availability or size of  the sprockets .
  • Tru-Cut  sprockets  can  be furnish ed  to  96"  outside diameter  in one  piece. Larger  sprockets  are  made in  two   or   more   mated  sections.   Plate  thicknesses  vary  from 1/4" through  4" in commercial widths. Smallest  practical  chain  pitch  for  flame  cutting  is  1 1/2"   and the  minimum burned pitch diameter  is approximately 3". Maximum diameter, in segments, is  unlimited.
  • Many   types   of   special   sprockets   can   be  furnished.  These  include  split  construction,  gap-tooth,  skip­-tooth,  segmental   rims,  multiple  width  ( two  through  four  rims), ring sprockets,  adjustable-hub,  short­-chord segments,  hunting  tooth,  double-duty,  compensating,  etc . sprockets . Any  type  hub  is  available (A,  B, C,  D, Shear  pin, Taperlock,  QD, and  Shear  Coupling) .



    1. Chain size (number marked on barrel or sidebar) .
    2. Number of teeth required.
    3. Bore, keyseat, setscrew .
    4. Hub Type (B  or  C) see page 7 for minimum standard sizes.
    5. Hardness required (Rockwell C 30-35 is hardness as flame   Rockwell C 47-55 is achieved  with standard heat treating).
    6. Is sprocket one-piece or of split construction?
    7. Is bronze bushed bore required?
    8. If Type A plate-type sprocket (no hub), specify: - center  hole ; bolt circle ; number and size of  bolt holes .
    9. If minimum plain bore (stock bore) is required, specify ultimate or max imum bore required.
    10. Any special tooth contour (please supply print).
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    1. To determine  sprocket  pitch diameter , multiply  chain pitch  by  tooth  constant  shown  in table  on page 6. For Skip Tooth sprockets or Traction Wheels , use  number  of  chain pitches on pitch diameter and not number of teeth.
    2. Deter mine plate thickness fro m table and sk e tches below.
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    1. In addition to all of the above information, it  is  necessary to determine pitch of chain:
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    1. Measure roller diameter. If badly worn, try to determine original size.
    2. Measure height of chain side-bar.
    3. Is there any O.D. interference with chain attachments, guards, etc.?
    4. Are there rods or bars thru chain sidebars between the rollers? If so, please locate and list size of thru rods.
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    To obtain the pitch diameter of a sprocket, multiply the constant for the number of teeth from the table below by the chain pitch.

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