First Hot Melt Machine? Here's What a 4L Gear Pump Unit Actually Gets You

For a workshop buying its first hot melt machine — or replacing a manual or semi-manual gluing process — the specification decision is often made on price alone. That tends to produce one of two outcomes: a machine too small to keep up, or a machine far beyond what the work requires. The ASD-D4 4L Precision Gear Pump Hot Melt Glue Machine sits in the middle of that range, and understanding what it does and does not do is the key to judging whether it fits.

What it is

A 4L motor gear pump melter. 2500W on 220V/50Hz. Melting rate 6kg/hour. Working temperature 180°C, control range 40–250°C. Maximum viscosity 100,000 cps. 2–3 hose outputs, up to 3 guns. 7-inch touch screen with Ni120 sensor compatibility. 50kg, 590×340×546mm.

What that specification actually gets you

Repeatable output. The Taibang motor and 6–20cc gear pump deliver adhesive by displacement rather than air pressure. For work where each part must receive the same amount of glue, this is the most important feature on the list.

Real temperature control. A 7-inch full-colour interface with real-time capture and Ni120 compatibility is not typical of entry-level machines. It means the operator can see actual melt conditions and the controller can hold them.

Genuine multi-point capability. Up to 3 guns from one host means a workshop can move from single-point to multi-point gluing without buying a second machine.

Maintenance access. The modular tank design and imported Teflon coating reduce cleaning time between runs — a practical concern in workshops where the machine changes adhesive or shuts down between batches.

What it does not get you

Unlimited viscosity headroom. At 100,000 cps, the ASD-D4 covers most common packaging, bookbinding, and light assembly adhesives. It is not the right specification for ultra-high viscosity structural or automotive headliner materials — those require a piston pump.

High-volume continuous output. A 4L tank and 6kg/hour melting rate suit short-to-medium cycles and multi-product schedules. For continuous high-speed lines consuming 15–30L per hour, a larger tank and higher melting rate are required.

What to weigh in the decision

Three questions tend to settle the specification:

What is the viscosity of your adhesive? Under 100,000 cps, the ASD-D4 is in range. Above it, look at a piston pump machine.

How many dispensing points per cycle? One to three, and the ASD-D4 covers it from a single host.

What is your hourly adhesive consumption? If it approaches or exceeds 6kg/hour, a larger tank and melting rate are needed.

If the answers fall within the ASD-D4's envelope, the machine offers a level of control and integration typically associated with larger equipment, at a compact scale.

The manufacturer

The ASD-D4 is produced by Guangzhou Keqirui Machinery Equipment Co., Ltd. , a hot melt glue machine equipment manufacturer integrating research and development, manufacturing, sales and service. Since the establishment of the company, Keqirui has been delivering quality hot melt machine products to the majority of users and has won the trust of customers. Sincere cooperation and common development is the business philosophy of Keqirui Machinery; the company has won praise from customers through high-quality product quality and honest business services, while creating maximum value for customers.