Choosing a single-screw extruder for plastics rubber processing machinery is usually less about horsepower and more about what you already own. The four machines in this guide split into two camps. The two 3D Filament Single Screw Extruder listings are compact and motor-less, meant for bench experiments and small-batch testing. The two TECHTONGDA listings, the Speed Adjustable model and the SJ25, are 110V machines with motor power and speed adjustment, priced near the top of the range.
The real decision tension: do you want the cheapest way to get an extrusion screw head, or do you want a self-contained 110V extruder with motor and speed control already listed? The first path saves money but asks you to solve the drive problem. The second path costs more but gives you a screw speed range you can actually tune, which matters for repeatable filament output.
Quick take
If you already have a motor and just need a screw head, the lower-priced 3D Filament Single Screw Extruder is the most direct entry. If you want a research-oriented head with ceramic coils and an aluminum heat sink, the three-heating-coil version adds those details. If you need a 110V extruder with a motor, the Speed Adjustable model and the SJ25 are the two to weigh; they differ in screw geometry and heating headroom.
Listed price comparison
Here are the listed prices for the four machines.
| Product | Listed price | Price bar |
|---|---|---|
| Single Screw Extruder 110V Speed Adjustable | USD 1,999.50 | |
| 3D Filament Single Screw Extruder (Three Heating Coil) | USD 227.99 | |
| 3D Filament Single Screw Extruder | USD 158.86 | |
| SJ25 Single Screw Extruder 0.1-2kg/h 110V 250W | USD 2,085.86 |
Decision matrix
| If you need... | Best fit | Why this listing |
|---|---|---|
| The lowest listed price for a motor-less bench head | Lower-priced 3D Filament Single Screw Extruder | 20mm screw, 200W×3 heating coil setup |
| A compact research head with ceramic coils and a heat sink | Three-Heating-Coil 3D Filament Single Screw Extruder | 200W ceramic coils, aluminum heat sink, universal compatibility |
| Speed-adjustable 110V single-screw extrusion | Single Screw Extruder 110V Speed Adjustable | 16:1 LD ratio and 0-25 r/min speed range |
| 110V extrusion with a high-temperature ceiling | SJ25 Single Screw Extruder | 14:1 LD ratio and 350°C max heating temperature |
Product notes
Single Screw Extruder 110V Speed Adjustable - $1,999.50
This TECHTONGDA machine is the better choice when you need to vary throughput without changing hardware. The listing pairs a 250W motor with a screw diameter of 1 inch (25mm) and an LD ratio of 16:1. It handles a range of 3D printing materials including PEEK, PCL, ABS, PLA, PETG, TPU, and TPE, and you can adjust speed from 0 to 25 r/min. The trade-off is that this is still part of a bigger line: you need moulds, cooling, hauling, winding, or cutting equipment to finish products. The listed price is also close to the SJ25's price, so the decision between the two TECHTONGDA machines comes down to which speed range and LD ratio suit your material.
3D Filament Single Screw Extruder (Three Heating Coil) - $227.99
This is the motor-less extruder head for users who want a little more polish than the budget listing. It is built around 200W ceramic heating coils, an aluminum alloy heat sink, and a dual-clamp screw mounting. A 2.5mm nozzle is fitted by default, and a 1.75mm nozzle is available to buy separately. Universal compatibility with brands and models is listed, which makes this an easy pick for an existing machine. The limitation is just as important: the motor is not included, so you need to supply rotation. It is also the higher-priced motor-less head in the set, so you should only choose it if ceramic coils and the heat sink are worth the jump.
3D Filament Single Screw Extruder - $158.86
This is the entry point of the group. For the lowest listed price you get a motor-less single screw extruder with a 20mm screw, a 330mm screw length, a 28mm inlet, and a 2.5mm default nozzle. The heating side is rated at 200W×3 via heating coils. Because the motor is not included, this listing works best for someone who already has a drive system or is happy to rig one up. It also uses the same style of default nozzle as the pricier motor-less model, so you are not giving up much in nozzle fit. The real limitation is that you have to build the rest of the extrusion setup yourself, and the listing focuses on physical specs.
SJ25 Single Screw Extruder 0.1-2kg/h 110V 250W - $2,085.86
The SJ25 is the highest-listed-price machine here, and it carries a production figure in its name. It uses a 25mm screw with a 14:1 LD ratio, a 250W motor, and a maximum heating temperature of 350°C, which opens the door to higher-temperature plastics. Speed adjusts from 0 to 20 r/min. You still face the same downstream reality as the other TECHTONGDA machine: moulds, cooling, hauling, winding, or cutting equipment are needed to finish the part. If high-temperature capability matters more than a wider speed range, this is the one to favor over the Speed Adjustable model.
Final recommendation by use case
For most buyers, the decision falls out by use case. If you are testing filament materials and already have a way to turn the screw, start with the lowest-priced 3D Filament Single Screw Extruder. If you want a more refined bench head, choose the three-heating-coil version. For a repeatable 110V extruder, the Speed Adjustable TECHTONGDA model is the practical pick because of its wider speed range. For higher-temperature plastics and a clearly rated output figure, the SJ25 is the one to buy. Whichever path you take, remember that a single screw extruder is just the middle stage of a processing line, and the supporting equipment will shape your results just as much.
