ENTEK Twin-Screw Extruders

ENTEK is a US maker of QC3, HR3 and HT co-rotating twin-screw extruders, replacement screws and barrels and material handling systems, built in Lebanon, Oregon.

QC3 series extruders: 27, 33 and 43 mm

The QC3 series (Quick Change, Quick-Clean, Quality Control) is designed for compounders who run small lots with multiple changeovers each day. It includes 27, 33 and 43 mm co-rotating extruders. The 27 mm model serves as a lab machine; the 43 mm unit with a 200 hp motor suits small to medium lots.

27, 33 and 43 mm sizes
Co-rotating screws
43 mm: 200 hp motor
Small to medium lots

HR3 series extruders: 53 to 133 mm

The HR3 series (High Rate, High Reliability, High Return) is used by manufacturers running larger lots with few or no changeovers. It includes 53, 73, 103 and 133 mm extruders. The 73 mm unit with up to 600 hp serves large-lot compounding; the 103 and 133 mm units serve masterbatch.

53, 73, 103 and 133 mm
73 mm: up to 600 hp
103 mm: up to 1,400 hp
Large lot sizes

HT series extruders: HT72 and HT162

HT (High Torque) is a series built for continuous 24/7/365 production. The HT72 has a torque density of 18 Nm/cm³ and a Do/Di ratio of 1.61, a motor up to 1,200 hp (895 kW) and screw speed up to 1,200 rpm. The HT162 with 162 mm screws tops the ENTEK extruder range.

HT72 torque density: 18
Do/Di ratio: 1.61
HT72 motor: 895 kW
HT72 speed: 1,200 rpm

Screw elements from 25 to 250 mm

ENTEK manufactures segmented twin-screw extruder screws from 25 to 250 mm. Solid elements are made of D2 tool steel (15H), H13 (16H) and PM steel (41H, 46H); bi-metallic 61H and 67H with a mild steel core cover 53 mm and up. 16H is used in high impact zones, feed screws and mixing elements.

25–250 mm sizes
15H: 58–60 HRC
16H: 46–49 HRC
Bi-metallic from 53 mm

Barrel segments with replaceable sleeves

ENTEK barrel segments from 25 to 250 mm have a replaceable sleeve and a reusable holder, which the maker puts at an average 25% saving when barrels need to be replaced. Barrels that are not sleeved can be redesigned for sleeves. 46H and 64H sleeves serve abrasive mineral fill, fiberglass and acids.

25–250 mm sizes
Average 25% saving
10B: 61–63 HRC
64H sleeves from 43 mm

Screws and barrels for other extruder brands

ENTEK makes replacement screws and barrels for Coperion, Leistritz, Century, NFM, JSW, Berstorff, Steer, Toshiba and other extruders. The screws are made in the USA for compatibility with OEM equipment. The ENTEK layout program shows the metallurgy of each element and exports the parts list.

Coperion, Leistritz fit
Also JSW, Toshiba, Steer
Manufactured in the USA
ENTEK layout program

Barrel, gearbox and melt pump rebuilds

ENTEK assesses worn barrels for damage and rebuilds them with replacement liners. Extruder and splitter gearboxes get scheduled inspection and rebuilds; melt pumps get a complete rebuild after evaluation. ENTEK support covers break/fix emergency response, installation and a maintenance plan.

Barrels: liner replacement
Gearbox inspection
Melt pump rebuild
Preventative maintenance

Material storage, conveying and blending systems

ENTEK material handling designs storage systems: welded and bolted silos, liquid tanks, day and surge bins. Conveying systems focus on pneumatically conveying hard-to-handle powders: pressure, vacuum and dense phase systems. Blending systems come in continuous and batch versions.

Welded and bolted silos
Dense phase conveying
Continuous blending
Batch blending

Selecting an ENTEK twin-screw extruder by task

For small lots with multiple changeovers each day, the QC3 series with 27, 33 and 43 mm extruders fits; the 27 mm model also serves as a lab machine.

The HR3 series (53, 73, 103 and 133 mm) is built for larger lot sizes with few changeovers, and its 103 and 133 mm units serve masterbatch compounding. The high-torque HT series is designed for continuous 24/7/365 production.

All ENTEK extruders are co-rotating twin-screw machines. Required cooling is calculated for each process during a lab trial at ENTEK.

Screws, barrels and rebuild services

ENTEK makes segmented screws and barrel segments from 25 to 250 mm, including parts for Coperion, Leistritz, JSW, Berstorff, Steer and Toshiba extruders. Barrels with a replaceable sleeve and reusable holder give an average 25% saving when it is time to replace them.

The company rebuilds worn barrels with new liners, inspects and rebuilds gearboxes, repairs melt pumps, runs health and wellness checks and trains operators.

ENTEK manufacturing

ENTEK has been manufacturing extrusion equipment for the plastics industry for over 25 years; all machinery is manufactured in the USA at its campus in Lebanon, Oregon. The company is vertically integrated and also builds material storage, conveying and blending systems.

Besides extruders, ENTEK makes lead-acid and lithium-ion battery separators and sells its products on six continents.

ENTEK and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of ENTEK and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.