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Yarn Spinning Formulas

Formulas used for yarn spinning production including various yarn numbering system conversions.

13 40,987

Common Spinning Formulas

Grams per Meter0.5905 / Ne
Grams per Yard0.54 / Ne
Texden x .11 = 1000/Nm = Mic/25.4
NeNm/1.693
DRAFT(feed weight in g/m) / (delivery weight in g/m)
DRAFTTex (feed)/Tex(delivery)
DRAFTdelivery roll surface speed/feed roll surface speed
No. of hanks delivered by m/c(Length delivered in m/min)/1.605grams per meter = 0.5905/Ne

Carding

Production in kgs / hr( L x 1.0936 x 60 x effy ) / (hank (Ne) x 36 x 840 x 2.2045)

L – delivery speed in m/min
effy- efficiency
Ne – English count ( number of 840 yards in one pound)
840 – constant
2.2045- to convert from lbs to kilograms

Production in kgs / hr(L x Ktex x 60 x effy) / ( 1000 )

L – delivery speed in m/min
Ktex- sliver count in Ktex (kilotex)
effy – efficiency
1000- to convert to kilograms from grams

Production in kgs / 8 hrs(0.2836 x L x effy) / (Ne)

L – delivery speed in m/min
effy – efficiency
Ne – English count

Production / 8 hrs(Hank x Nd) /( Ne x 2.2045)

Hank = no of hank (840 yards)delivered by the machine
Nd = no of deliveries
Ne = hank of the material

Total draft in card(feed weight in g/m) / (sliver weight in g/m)

Drawframe

Break draftsurface speed of 2nd roller / surface speed of back roller
Main draftsurface speed of 1st roller / surface speed of 2nd( middle) roller
Total draftsurface speed of delivery roller / surface of feed roller
Production in kgs / 8 hrs(0.2836 x L x effy x Nd) / (Ne)

L – delivery speed in m/min
effy – efficiency
Ne – english count
Nd – No of delvieries

Production in kgs / hr(FRD x FRrpm x 3.14 x 60 x effy x Nd) / (Ne x 840 x 36 x 2.2045)

FRD – front roller dia in inches
FRrpm – front roller rpm
effy – efficiency
Ne – Sliver hank
Nd – number of deliveries

Speedframe & Ringframe

Twist / Inch (TPI)Spindle speed / FRS

FRS – front roller surface speed in inches/mi

FRS = FRrpm x 3.14 x FRDFRS – Front roller surface speed

FRD – front roller diamete

T.P.IT.M. x sqrt(count or hank)

T.M. – Twist multiplier
sqrt – square root

Production in kgs / 8 hrs(7.2 x SS x effy) / (TPI x Ne x 1000)

SS – spindle speed

Spindle speedm/min x TPI x 39.37
Hank deliveredspindle speed / ( tpi x 62.89)
Ring traveller speed in m/sec(spindle speed x ring dia in mm x 3.14) / (60 x 1000)

Winding

Production in kgs / 8 hrs(0.2836 x L x effy x Nd) / (Ne)

L – delivery speed in m/min
effy – efficiency
Ne – english count
Nd – No of delvieries

Production in kgs / hr( L x 1.0936 x 60 x effy ) / (hank (Ne) x 36 x 840 x 2.2045)

L – delivery speed in m/min
effy- efficiency
Ne – English count ( number of 840 yards in one pound)
840 – constant
2.2045- to convert from lbs to kilograms

13 Comments
  1. Raju says

    How to calculate average speed(spinnin)?

  2. irshad says

    im a investigator in rnd rnd formula all pls

  3. Sanjay Prajapati says

    dear sir,

    I am training supervisor in the textile industry spinning plant, so plz tell me calculation ring frame, auto corner, cheese winding and (TFO) with calculation formula

  4. Jayaraj says

    It is base value
    If one 840 yard yarn weighs one pound it will one count
    Similarly if one pound of yarn give 840 yards of 49 times it will be 40 s count ne

  5. Raja Haider Ali Bhatti says

    36 in the calculation is wrong as you are converting meters into yards already by multiplying meters/m with 1.09.

  6. Dharam chand says

    Why 840 Yard constant in textile

  7. Zoauddin says

    Dear Sir
    I want and I you about profit and cost.

    Pls can you explains me about quality formulas example (60×60×40)/(60×60×40)=61
    Pls explain me?

    If I know what quality I want use on looms how can I know production cost?

    Best regards

    1. Sanjay Prajapati says

      dear sir,

      I am training supervisor in the textile industry spinning plant, so plz tell me calculation ring frame, auto corner, cheese winding and (TFO) with calculation formula

  8. NAVEEN KUMAR GURRAM says

    how to increase noil percentage in comber e65 reiter

    what is meant by propack in autoconer aerlicon

  9. Gajanand Bihani says

    how to calculate TM for double yarn, say 2/60 cotton yarn.

  10. V.S. Shekhawat says

    Carding gauge in pv yarn

    1. Muhammad Esmaeel says

      card Engeenir Muhammad esmaeel
      Email
      Yasiresmaeel@yahoo.com

  11. gopal says

    wat is T.M explain twist multiplier

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