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Why Does Fabric Get Holes in a Circular Knitting Machine? Causes and Solutions
By Ramana Machines · September 21, 2026
Learn why fabric gets holes in a circular knitting machine. Understand the causes, including yarn tension, broken needles, sinkers, cam problems, yarn feeding, machine settings, and take-down issues.
Why Does Fabric Get Holes in a Circular Knitting Machine? Causes and Solutions
Fabric holes are one of the common quality problems found during circular knitting. A small hole may look like a simple fabric defect, but it can be caused by several different machine or yarn problems.
The cause may be excessive yarn tension, a broken needle, a damaged sinker, a cam problem, poor yarn feeding, incorrect machine settings, or an issue with the take-down system.
Finding the actual cause is important. Simply changing the machine settings without checking the affected parts may not solve the problem.
This guide explains the main causes of circular knitting machine fabric holes and the simple checks that can help prevent them.
1. Excessive Yarn Tension
Yarn tension has a direct effect on stitch formation. If the yarn tension is too high, the yarn can be pulled too tightly during knitting.
This can cause:
- Yarn breakage
- Tight stitches
- Weak fabric areas
- Missed stitches
- Holes in the fabric
How to fix it
Check the yarn tension before changing other machine settings.
Make sure the yarn moves smoothly through the yarn path and feeder. Check that the tension setting is suitable for the yarn being used.
Make small adjustments and knit a test section. Avoid making large changes at once.
2. Broken Needles
Broken or damaged needles are a common reason for holes in knitted fabric.
A damaged needle may not form the stitch correctly. It can also affect the stitches around it.
What to check
- Broken needles
- Bent needles
- Worn needles
- Needles not moving correctly
- Dirt around the needle area
How to fix it
Stop the machine safely and inspect the needles around the area where the hole appears.
Replace damaged needles with the correct type. After replacement, check the machine at low speed and inspect the fabric before returning to normal production.
If the same needle position causes holes repeatedly, further inspection may be needed.
3. Damaged Sinkers
Sinkers help control the fabric and support the knitting process. A damaged, bent, or worn sinker can affect stitch formation.
This may result in:
- Holes
- Uneven stitches
- Poor fabric appearance
- Repeated defects in the same area
How to fix it
Inspect the sinkers when a hole appears repeatedly in the same part of the fabric.
Check for wear, damage, dirt, or incorrect movement. Replace damaged sinkers with the correct replacement part.
It is important to check the surrounding area as well because another machine part may be causing the sinker problem.
4. Cam Problems
Cams help control the movement of the needles during knitting. If a cam is worn, damaged, incorrectly set, or dirty, the needles may not move as expected.
This can lead to incorrect stitch formation and holes.
How to fix it
Check the cam area for:
- Damage
- Wear
- Dirt
- Loose parts
- Incorrect positioning
Do not make major cam adjustments without proper knowledge. If the problem continues after basic cleaning and inspection, technical support should be requested.
5. Yarn Feeding Issues
The yarn must reach the needles smoothly and consistently. If the yarn feeder does not work correctly, the needle may not receive the required yarn.
This can create missed stitches and holes.
Common yarn feeding problems
- Yarn feeder damage
- Incorrect yarn path
- Yarn rubbing against a machine part
- Poor yarn tension
- Yarn knots
- Uneven yarn supply
How to fix it
Follow the yarn from the yarn package to the knitting point.
Make sure it moves freely and does not catch on any part. Check the feeder and tension system and remove any yarn waste or dirt around the feeding area.
If the yarn breaks or feeds unevenly again after adjustment, inspect the feeder and related parts.
6. Incorrect Machine Settings
Incorrect settings can affect stitch formation and fabric quality.
Settings related to stitch length, yarn tension, machine speed, and other knitting functions should match the yarn and fabric requirements.
How to fix it
Before production, check the machine settings against the production program.
If you are changing yarn or fabric type, do not assume that the previous settings will work. Make the required adjustments and produce a small test section first.
For computerized machines, also check the selected program and stored settings.
7. Take-Down Problems
The take-down system helps pull the knitted fabric down as it is produced.
If the take-down force is too high, too low, or uneven, it can affect the way stitches are formed and may contribute to fabric defects.
How to fix it
Check whether the fabric is moving smoothly through the take-down system.
Look for:
- Uneven fabric pulling
- Incorrect take-down setting
- Slipping
- Excessive pressure
- Loose or damaged parts
If the problem appears repeatedly, the take-down system should be inspected and adjusted according to the machine manufacturer's instructions.
8. Why Do Holes Keep Appearing in the Same Place?
If holes repeatedly appear at the same position, this can provide a useful clue.
The problem may be related to a specific:
- Needle
- Sinker
- Cam
- Yarn feeder
- Yarn path
- Machine setting
Mark the location of the hole on the fabric and check the corresponding machine area.
If the defect moves when a component is replaced or adjusted, it can help identify the source of the problem.
9. Why Do Holes Appear Randomly?
Random holes may be related to yarn or feeding problems rather than one fixed machine position.
Check:
- Yarn quality
- Yarn knots
- Yarn tension
- Yarn package
- Yarn feeder
- Yarn path
- Machine speed
A yarn that contains weak sections or thick knots can create problems during knitting.
10. How to Prevent Fabric Holes
Preventing holes is easier than dealing with repeated fabric defects during production.
Follow these simple practices:
Check Needles Regularly
Inspect needles before production and replace damaged or worn needles.
Keep the Machine Clean
Remove lint, yarn waste, and dust from the needle and machine areas according to the machine's cleaning instructions.
Check Yarn Quality
Use suitable yarn and check the yarn package for knots, weak areas, or other visible problems.
Maintain Correct Yarn Tension
Do not use excessive tension. The setting should match the yarn and production requirement.
Check Feeders
Make sure yarn feeders are clean and working properly.
Follow Correct Machine Settings
Use settings that match the yarn, fabric, gauge, and production requirement.
Check Take-Down
Make sure the fabric is being pulled smoothly and evenly.
Follow Regular Maintenance
Regular inspection can help identify worn needles, sinkers, cams, feeders, and other parts before they cause major fabric defects.
A Simple Hole Troubleshooting Checklist
When you find a hole in the fabric, follow this order:
- Stop the machine safely.
- Mark the location of the hole.
- Check the needles in that area.
- Check the sinkers.
- Inspect the cam area.
- Check the yarn feeder.
- Check yarn tension.
- Check the yarn for knots or damage.
- Check the machine settings.
- Check the take-down system.
- Run a small test section.
- Contact technical support if the problem continues.
This step-by-step approach can help you find the actual cause instead of repeatedly changing settings.
When Should You Replace a Machine Part?
A part should be checked for replacement when it is damaged, badly worn, or repeatedly causing production problems.
Important parts to monitor include:
- Needles
- Sinkers
- Cams
- Yarn feeders
- Sensors
- Take-down components
- Other moving parts
Using the correct replacement part is important. The wrong part may create new knitting problems or affect machine performance.
Businesses searching for the best textile machinery spare parts supplier company in Ludhiana should also compare spare part availability, technical support, product compatibility, and after-sales service rather than looking only at price.
How Machine Selection Can Affect Fabric Quality
Fabric quality starts with selecting equipment that matches the production requirement.
When choosing a circular knitting machine, consider the fabric type, gauge, yarn, production volume, machine configuration, automation, and available technical support.
A best Computerized Circular Knitting Machine for one production requirement may not be suitable for another. The machine should be selected according to the type of fabric and production process.
Support from Ramana Machines
Ramana Machines helps textile businesses with circular knitting machinery sourcing, machine selection, installation assistance, operator training, spare parts, and after-sales technical support.
We can assist customers in selecting suitable circular knitting equipment based on fabric type, yarn, gauge, production requirements, and machine configuration. We also support China sourcing and imported textile machinery requirements.
If you are facing repeated fabric holes or other circular knitting problems, Ramana Machines can help with suitable machinery, spare parts, and technical support based on your production needs.
