Minimize Wear

All parts of the knitting machine have been carefully manufactured and tested by STOLL. Nevertheless, they are subject to wear.
You can keep the wear to a minimum if you check, clean, and lubricate the machine regularly and use it as intended.

NOTA! Knitting programs with a high quantity of carriage strokes in relation to the running time increase the stress on many wearing parts. In this case, reduce the scheduled maintenance intervals!

The following table contains an overview of the wearing parts and the possible causes of excessive wear.

Wearing part

Possible causes of increased wear

Prevention

Fabric take-down rollers

  • Excessive fabric take-down values
  • Contact pressure too high or to low
  • Cleaning agents harmful to rubber
    • Ether e.g.
    • Fuels
  • Yarns harmful to rubber
    • Abrasive, sanding yarns
    • Yarn finishes such as greases or oils
  • UV radiation
  • Optimize the settings.
  • Use cleaning petrol for cleaning.

Belts of the fabric take-down

  • Too high belt speed
  • Fabric winding
  • Thread windings
  • Cleaning agents harmful to rubber
    • Ether e.g.
    • Fuels
  • Yarns harmful to rubber
    • Abrasive, sanding yarns
    • Yarn finishes such as greases or oils
  • UV radiation
  • Needle Brushes
  • Brushes of the winding protection device *
  • Brushes of the central lubrication *
  • Incorrect adjustment

Feed wheel rollers

  • Abrasive, sanding yarn
  • Allowing the feed wheel to run unnecessarily
  • Yarn tension too high
  • Needle bed elements
  • Cams
  • Excessive fabric take-down values
  • Yarn too thick
  • Insufficient lubrication
  • Insufficient cleaning

Yarn Guiding Parts

  • Deflectors
  • Yarn control units
  • Eyelets
  • Abrasive, sanding yarn
  • Yarn tension too high
  • Replace affected parts according to needs.
  • Adjust the yarn tension according to needs.

Yarn Carriers

  • Insufficient lubrication
  • Abrasive, sanding yarn
  • Yarn tension too high
  • Clean and lubricate according to needs.
  • Adjust the yarn tension according to needs.
  • Check and adjust the yarn carrier clearance in the carriage directions.
  • High quantity of carriage strokes in relation to the running time
  • Reduce the scheduled maintenance intervals.

Autarkic yarn carriers (ADF)

  • Stiff high-deep movement
    • Soiling between moving parts of the yarn carrier
    • Yarn finishes such as greases or oils
  • Stiff or deformed guide rollers
  • Yarn tension too high
  • High quantity of carriage strokes in relation to the running time
  • Reduce the scheduled maintenance intervals.

Toothed belt of auxiliary take-down

  • Residual threads due to fabric windings were not removed carefully
  • Clean according to needs.

Toothed Belt

  • Main drive
  • Racking
  • Comb Take-down
  • Auxiliary Take-down
  • Yarn Carriers (ADF)
  • Toothed belt tension roller (ADF)
  • Belt tension too high:
    Danger of bearing damage
  • Belt tension too low:
    Danger of position errors
  • Tension roller of yarn carrier toothed belt worn-out
  • Cleaning agents harmful to rubber
    • Ether e.g.
    • Fuels
  • High quantity of carriage strokes in relation to the running time
  • Reduce the scheduled maintenance intervals.

Energy chain trailing cable

  • Heavy soiling
  • Laying down of objects
  • Damage to depositing gutter
  • Not moved into position carefully after work at the rear of the machine
  • Loss of oil due to worn central lubrication lines
  • Check and clean according to needs.
  • Check the lines on friction.
    Especially in the turning area of the energy chain
  • Replace the lines of central lubrication deeply worn-out by friction.

Battery

  • Loading time too short
    • Frequent power failure
    • Frequent switching off of the machine
  • Lifetime or number of charging cycles exceeded
  • Check and replace the battery.
  • Leave machine switched on for longer time (>6h).
  • Toothed Belt
  • Carriage guide
  • Engaging edge of yarn carrier plunger
  • Frequent staggering of the yarn carriers following the fabric selvedge
  • Bearing clearance of the carriage guide
  • Yarn carrier clearance in carriage directions
  • Use the automatic staggering of the yarn carriers following the fabric selvedge according to needs.
  • Check and adjust yarn carriers to avoid tilting.
  • High quantity of carriage strokes in relation to the running time
  • Reduce the scheduled maintenance intervals.