Small Diameter Circular Knitting Machine Maintenance and Needle Care

Author：KUNYUAN Machine Manufacturer TIME：2026-08-28

Small-diameter service log

Diagnose from the first repeating course, not from the loudest symptom

Small-diameter machines pack loop-forming and yarn-control events into a short circumference. A single damaged needle, dirty trick, misaligned guide or unstable package can repeat quickly around a narrow product.

Begin maintenance with a marked sample and position record. Note machine direction, course, feed or needle relationship, yarn lot, program and the last change. Cleaning or replacing parts before that evidence is captured can erase the cause.

Follow the exact machine manual for lubrication, needle removal, guards and lockout. This article defines the diagnostic record, not a substitute maintenance interval or safety procedure.

00 Observation

Preserve the fabric symptom before opening the head

Mark the first and last affected courses and keep the product orientation. Decide whether the defect repeats by needle position, feed, colour, program event or time. Photograph face and reverse under consistent light.

If a break or hole is random, inspect yarn and package handling before blaming a needle. If it repeats at the same cylinder position, prioritise the corresponding trick and loop-forming parts.

01 Needle bed

Inspect a needle as part of its track

Compare the suspected needle with a known sound part of the exact designation. Check hook, latch, butt, stem and signs of rubbing, then inspect the trick for lint, oil residue, burrs or restricted movement.

Replace only with confirmed compatible parts and follow the maker's method. Keep the removed item labelled so a recurring pattern can be reviewed.

02 Yarn route

Trace package, guides and feed before changing stitch settings

Observe unwinding, joins, storage or positive feed, outlet braking, guide angle and needle entry. A polished guide can still damage yarn if its position shifts.

For patterned hats or small tubes, include colour-change and elastic-feed events. A defect that follows one yarn path needs a different repair from a defect locked to one needle.

03 Hygiene

Clean to the documented boundary and verify oil delivery

Remove lint with the approved method while protecting sensors and electrical parts. Avoid pushing debris deeper into tricks or using uncontrolled air near sensitive areas.

Use the specified lubricant and interval. Record product, quantity or setting, and visible delivery. Too much oil can stain fabric; too little can increase wear and heat.

04 Verification

Restart with the original yarn at a controlled setting

Turn or run slowly as permitted, then knit a marked sample before returning to normal speed. Compare the same course region, tension and program event with the preserved fault.

Close the record only when the symptom is absent across a meaningful run and no new line, heat, noise or oil mark appears. Record the technician, parts and next inspection date.

Small-diameter knitting head reference — Record position before opening or cleaning the head.

Needle-area and yarn-path evidence — Inspect the needle in its track and compare the yarn path.

Restart fabric and machine reference — Keep the removed part and marked restart sample with the log.

Small-diameter maintenance log

Symptom pattern	Likely system to isolate	Evidence before action	Restart proof
Same cylinder position	Needle, trick, cam or local guide	Marked course and position	Defect absent at same location
Same feed or colour	Package, feeder, guide or selector	Feed map and yarn label	Event repeats cleanly
Random holes/breaks	Yarn damage or handling	Package and path observation	Stable run with same lot
Oil/lint line	Cleaning and lubrication route	Product, position and interval	Clean fabric without heat rise

Small-diameter maintenance questions

How often should needles be replaced?

Use condition, fabric evidence and the exact manufacturer's maintenance guidance. A universal calendar can replace good parts or miss local damage.

Can one needle from another model be used if it fits?

No. Hook, latch, butt, stem and material must match the approved designation; apparent fit does not prove compatibility.

Should compressed air be used for cleaning?

Only where the manufacturer's procedure permits it and with controls that avoid driving debris into bearings, tricks, sensors or the knitting zone.

What belongs in the service record?

Keep symptom, machine and roll position, yarn lot, program, observations, action, part designation, lubricant/cleaning detail and restart sample.

When should a technician stop the restart?

Stop on contact, unexplained resistance, heat, noise, repeated defect, unsafe guard state or any alarm without a known corrective procedure.

Conclusion

Good needle care is not a parts-changing habit. It is a closed diagnosis: preserve the repeating evidence, isolate needle bed and yarn path, clean and lubricate within the manual, then prove the restart on a marked sample.

Carry the symptom log and confirmed part designations into service discussions for the body size circular knitting machine range instead of ordering maintenance parts from appearance.