Model · Single screw SE
SE-50 Single Screw Extruder
The SE-50 single screw extruder: 50 mm, 11–15 kW, 30–80 kg/h — the smallest SE, for lab-scale recycling trials, strap and small profile work.
SE-50 single screw extruder — workshop photo 1, Kerke workshop, Nanjing
Single screw SE — workshop photo 2, Kerke workshop, Nanjing
Single screw SE — workshop photo 3, Kerke workshop, Nanjing
Single screw SE — workshop photo 4, Kerke workshop, Nanjing
Single screw SE — workshop photo 5, Kerke workshop, Nanjing
Single screw SE — workshop photo 6, Kerke workshop, NanjingQuick answer
Entry of the SE range: 50 mm screw at L/D 25–30, 11–15 kW, 30–80 kg/h. A compact machine for small-batch pelletizing, strap and micro-profile extrusion, and recycling trials where the material stream is still being characterised.
Workshop photos and a running video — shot on our own lines, not stock images.
Parameters
| Model | Screw dia. (mm) | L/D | Motor (kW) | Output (kg/h) |
|---|---|---|---|---|
| SE-50 | 50 | 25–30 | 11–15 | 30–80 |
Reference output measured on the stated material family; subject to a material trial. Motor and torque values are per machine, not per screw shaft.
Where it fits in the range
Bottom of the SE ladder: the SE-65 (60–150 kg/h) is the next step, and the SE-120 is where the family becomes a serious recycling machine. As a discharge stage the SE-120 pairs with twin screws in the KTE/SE family; as a compounding machine the SE-120 / SE-120 two-stage line starts the SE/SE family.
What it runs
Duties: small-lot regrind pelletizing, masterbatch let-down trials, strap and small profiles, and colour changes on short runs where a big machine's purging cost dominates.
Configuration options
Every SE model is quoted with the feeding and filtration that its material needs, because a single screw only works as well as what is pushed into it. On a SE-50 line the options that matter: forced feeder for low-bulk-density regrind, hydraulic screen changer (2–4 screens) for contaminated input, L/D 28 or 33, and strand, water ring or hot-face pelletizing. Barrel and screw metallurgy follows the abrasive load of the scrap stream.
FAQ
Is the SE-50 suitable for film scrap?
Only pre-compacted or agglomerated — loose film at 80–150 kg/m³ will not feed a 50 mm screw. For film, look at the SE/SE two-stage lines with force feeder.
What is the SE-50's role in a plant that already has big lines?
Purging-free small runs, trial pelletizing, and reprocessing clean edge trim. Its value is not kg/h but the cost of being wrong — small machine, small mistake.
Does it need a screen changer?
For regrind, yes even here: a manual or small hydraulic changer keeps fines and contaminants out of the pellets. The quotation sizes it with the machine.
Where these numbers come from
Parameters come from the Kerke parameter table and product master data sheet, cross-checked against commissioning records for the same model and duty. Where a catalogue value and a trial value disagree, the trial value is the one we quote.
Reviewed by the Kerke process team, Nanjing. Page updated 6 November 2026.
Send 25–50 kg — we return pellets, a video and a report with the parameters we used, in 3–7 days.
SE-50 single screw extruder — the short version
Note on SE-50 single screw extruder: what separates one machine from another is torque class, L/D and the wear package matched to your material, not the build standard. Shortlist from the tables, then confirm the choice on a trial with your own powder.
Planning an upgrade this quarter? Send the material and the target output — the configuration comes back within one working day.
Every quotation lists the wear package as a separate line, so its cost is visible from day one.
Questions are answered the same day, in English or Chinese.
Note on SE-50 single screw extruder: the data on this page was last verified on our own test line in Nanjing.
Not sure which SE-50 single screw extruder configuration fits? Describe the material and the pellet shape required — we answer with a recommendation, not a brochure.
A SE-50 single screw extruder from Kerke ships with CE documentation, a test-run record and a recommended spare set.
Related on this site: Extrusion lines by application · Extruder selection guide · free extrusion line quotation · Wikipedia: Twin-screw extruder