Model · Two-stage KTE/SE
KTE-75B / SE-180 Two-Stage Extruder
The KTE-75B SE-180 two-stage extruder (also written KTE-75B / SE-180): 71 mm twin screw + 180 mm single screw, 700–1,200 kg/h — high-filler 88–90% and HFFR cable compound at line speed.
KTE-75B SE-180 two-stage extruder — workshop photo 1, Kerke workshop, Nanjing
Two-stage KTE SE — workshop photo 2, Kerke workshop, Nanjing
Two-stage KTE SE — workshop photo 3, Kerke workshop, Nanjing
Two-stage KTE SE — workshop photo 4, Kerke workshop, Nanjing
Two-stage KTE SE — workshop photo 5, Kerke workshop, Nanjing
Two-stage KTE SE — workshop photo 6, Kerke workshop, NanjingWorkshop photos and a running video — shot on our own lines, not stock images.
Parameters
| Configuration | Stage 1 (twin screw) | Stage 2 (single screw) | Output (kg/h) | Typical product |
|---|---|---|---|---|
| KTE-75B / SE-180 | 71 mm | 180 mm | 700–1,200 | High filler 88–90%, HFFR |
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
Above the KTE-65B / SE-150 (500–800 kg/h) and below the KTE-95B / SE-200 (1,000–2,000 kg/h). If the duty drops back under 85% filler, a single KTE-75B does the same job in one machine; the two-stage pairing is for the last 5% of loading where single-shaft lines lose 30–40%.
What it runs
Duties: 88–90% CaCO3 masterbatch in volume, stone-paper compound, HFFR and XLPE-type cable compounds, PVC dry-blend finishing, and any formulation where moisture or volatiles must leave through the twin screw vent before the die sees pressure.
High Filler Masterbatch Line
Above 85% the melt stops behaving like a polymer. Output no longer follows screw speed, and the machine that held 82% …
HFFR / LSZH Cable Compound Line
HFFR compound carries 50–60% metal hydroxide, which starts decomposing around 180 °C. The line has to disperse it thor…
PVC Compounding Line
PVC is heat-sensitive and water-sensitive at the same time, which rules out both long residence time and water contact…
Configuration options
The two stages are ordered as one line but do different jobs, and the quotation reflects that: stage one gets the mixing geometry and the wear package, stage two gets a deep-flighted low-shear screw built only to meter and pressurize. Options that matter on a KTE-75B / SE-180 line: vacuum degree on the twin screw vent (−0.06 to −0.09 MPa), water-ring versus air-cooled hot-face pelletizing on the SE stage, and whether the SE discharge runs at fixed speed or follows the twin screw through a gravimetric loop.
FAQ
Is 90% filler really stable at 1,000 kg/h?
On the 75B/SE-180 it is a commissioned duty, not a brochure claim: the twin screw feeds the SE stage at a controlled fill, so die pressure — the usual failure point — never sees the filler spikes. Trial records back the number.
What floor space does the line need?
Plan for the twin screw section, the SE-180 stage, and the pelletizer in line: roughly 12–14 m of process length plus feeding and downstream. The layout drawing comes with the quotation.
Can the SE-180 stage run independently for other products?
Not in the standard build — the stages are mechanically coupled through the melt stream. Some plants buy a separate SE line for recycling; that is a different product (the SE/SE family).
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.
KTE-75B SE-180 two-stage extruder — the short version
Note on KTE-75B SE-180 two-stage 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 KTE-75B SE-180 two-stage extruder: the data on this page was last verified on our own test line in Nanjing.
Not sure which KTE-75B SE-180 two-stage extruder configuration fits? Describe the material and the pellet shape required — we answer with a recommendation, not a brochure.
A KTE-75B SE-180 two-stage 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