Four Truck Single Jersey Circular Knitting Machine

Last Updated on 18/03/2021

Experiment name:
Study on four truck single jersey circular knitting machine.


  1. To identify the 4 truck single jersey circular knitting m/c.
  2. To know about it’s different parts.
  3. To know the function of it’s different parts.
  4. To know the operation of this m/c.


  1. Cylinder is open, no dial.
  2. Cylinder & sinker plate are present.
  3. Close cam box.
  4. Cylinder cannot be seen.
  5. Needle cannot be seen.
  6. Positive cam system.
  7. Positive feed system.


  • Machine name: 4-Truck Single Jersey Circular Knitting Machine
  • Company: PAOLO  ORIZIO
  • Origin of the machine: ITALY
  • Model no.: GOH N/C
  • Dia of the machine: 22”
  • Gauge of the machine: 24
  • No of Feeder: 66
  • No of Needle: Π*24*22
  • Creel Capacity:   144
  • Sinker type: 2061905G

Main parts:

  1. 4 (butt) latch needle,
  2. Holding down sinker,
  3. Cam & cam box,
  4. Sinker plate & sinker cam plate,
  5. Cylinder,
  6. Feeder (+ve)
  7. Needle detector,
  8. Fabric detector,
  9. V.D.Q. pulley,
  10. Spreader,
  11. Take down roller,
  12. Cloth roller.

Machine Description:
The single jersey circular knitting machine is one of the modern machine. It has one set of needle and another set of sinkers. Both needle and sinkers have different cam system. Cam system is stationary and the cylinder with needle and sinkers are movable. The yarn feeder is stationary. The yarn is coming from cheese or cone package by yarn guide, north catcher, accumulator and yarn guide or feeder. The fabric draw off by the side of the needle and it take up by take up roller. There is a lighting system to inspection the fabric. The machine has positive feed system and breakage indicator.

four truck single jersey circular knitting machine
Fig: Four truck single jersey circular knitting machine

Operating Principle:  
As the machine is modern, it has a control panel of its own. In a switch box three switches are available. One is for full sewing, one is for machine stop & another is for machine motion. By the inching motion switch, the machine can be run slowly or fast. Beside this switch box another control panel is available. It has different functions; switches as F1.F2……F6 have their particular functions.

In this experiment we can learn parts and their functions, specification, working principle of 4-truck single jersey circular knitting machine. I think this practical will help me in future.

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