Model · Single screw SE
SE-120 Single Screw Extruder
The SE-120 single screw extruder: 120 mm, 55–75 kW, 300–600 kg/h — the most-used size in the range: recycling workhorse and the standard discharge stage of two-stage lines.
SE-120 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
The SE-120 is the range's hinge: 300–600 kg/h as a standalone recycling and pelletizing machine, and the default discharge screw behind KTE twin screws in the KTE/SE two-stage family. One size, two careers.
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-120 | 120 | 25–33 | 55–75 | 300–600 |
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
Between the SE-100 (200–400 kg/h) and the SE-150 (500–1,000 kg/h). Its two-stage careers: as the pressure stage of the KTE-50B / SE-120 line, as both stages of the SE-120 / SE-120 film line, and as the discharge of the KNE-400 kneader line.
What it runs
Duties: PP/PE regrind and flake at 350–500 kg/h, rigid scrap, the pressure stage behind colour and filler masterbatch twin screws, and film/bag recycling at the small end of the SE/SE family.
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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-120 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
Why does the SE-120 appear in so many two-stage configurations?
It is the smallest single screw that pressurises a production die without being the bottleneck behind a 50–65 mm twin screw — the physics lands there. Standardising on it also simplifies spares across lines.
What does the film version of the SE-120 need?
A compacting (force) feeder with metal detection, L/D 33 with vent, and a double-station screen changer — that is essentially the front half of the SE-120 / SE-120 line.
Is 600 kg/h realistic on regrind?
On dense, clean regrind the top of the band is reachable; on flake plan 350–450. The trial with your material converts the band into a planning number.
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-120 single screw extruder — the short version
Note on SE-120 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-120 single screw extruder: the data on this page was last verified on our own test line in Nanjing.
Not sure which SE-120 single screw extruder configuration fits? Describe the material and the pellet shape required — we answer with a recommendation, not a brochure.
A SE-120 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