Brief Introduction to Double Jersey Circular Knitting Machine

A double jersey large circular knitting machine is equipped with two needle cylinders, namely the upper needle cylinder (commonly known as dial) and the lower needle cylinder, which are arranged perpendicularly to each other.

Understanding the two-cylinder arrangement

The original description identifies the defining layout: an upper dial and a lower cylinder. For someone evaluating circular knitting equipment, this arrangement is a useful starting point, but it is not by itself a complete machine specification. Ask which structures and fabric constructions a proposed machine can support, and verify the answer against a physical sample. The selected yarn, gauge, needle arrangement and fabric design all belong in that conversation. Avoid assuming that any two-cylinder machine will produce every double jersey fabric in the same way.

A circular machine is also a different equipment category from the computerized flat knitting machines listed elsewhere in the product catalog. The comparison should start with the target fabric and intended downstream use rather than the shared word “knitting.” A buyer seeking a tubular fabric should state the required fabric structure and finishing route; a buyer seeking a shaped panel or collar should describe the panel geometry. This distinction helps the supplier direct the inquiry to an appropriate equipment family without promising an unverified output or speed.

Questions for a technical evaluation

Begin with a fabric swatch, construction diagram or other reference that shows both sides of the desired material. Record the intended yarn composition and count, finished fabric dimensions, target hand feel and quality checks. Ask the technical team to explain how the upper and lower needle positions are used for that specific fabric. A sample discussion is more informative than choosing equipment solely from a headline description. Any production target should be assessed only after the proposed configuration and material have been confirmed in writing.

When requesting a quotation, include the intended application, sample reference, yarn information, site power details and any constraints on floor space, service access or downstream processing. Request a machine-specific specification sheet and clarify the exact scope of supply, operator instruction and technical support. These questions do not imply a fixed price, delivery date or guaranteed throughput; they establish what needs to be verified before purchase.

Maintenance and support planning

Before commissioning any circular knitting machine, obtain the manufacturer’s approved procedures for needle inspection, cleaning, lubrication and safety checks. Operators should know how to stop the machine when a defect appears and how to document the fabric, yarn and operating conditions for a service request. Agree with the supplier on spare-part identification and the route for troubleshooting the actual model being purchased. Documenting these details alongside a reference sample makes subsequent production and maintenance discussions more precise.

In short, the upper dial and lower cylinder define the basic layout presented here; they do not replace model-level verification. A well-formed inquiry pairs the fabric requirement with the exact configuration, sampling plan and support questions so that technical suitability can be assessed on evidence rather than on a generic machine label.