Looking for a laboratory small extruder? Hengtong is the preferred choice for procurement! Our products are of top-notch quality!Cost-effective with excellent after-sales service!

Dongguan Jiutong Machinery Co., Ltd. National Service Hotline: 138-2574-4148  Shao Li. Address: Second Industrial Zone, Guchong Community, Wanjiang District, Dongguan City

Hengtong is a well-established brand trusted by universities, research institutes, and state-owned enterprises for bidding. Our company specializes in the design and processing of rubber and plastic equipment, including twin-roll open mills, tablet presses (flat vulcanizing machines), extrusion pelletizing units, sheet extrusion lines, blown film lines, cast film lines, small and micro tube extrusion lines, profile extruders, high-speed mixers, and more.

Unit composition: high-speed mixer, desktop micro plastic pelletizer. (Mixing formula) → twin-screw extruder main unit (mixing, plasticizing, and extruding strips) → cooling water tank → air blower → pelletizer (cut into fine particles for easy sampling).

SHJ-20 Twin-Screw Mixer Main Unit Parameters:

1.Extrusion capacity: 1~5 kg/hour

2.Screw diameter: Φ21.7 mm

3.Length-to-diameter ratio: L/D = 40:1

4.Main motor power: 4 kW (variable frequency speed control)

5.Main feeder power: 0.75 kW (variable frequency speed control)

6.Overall hardness: HRC 65~75

7.Screw core shaft: Made of 40CrNiMoA material, with involute connection between threaded elements and the core shaft, offering high strength, large load capacity, and convenient disassembly and assembly.

8.Screw elements: Made of high-quality high-speed tool steel W6MO5Cr4V2, treated with high-temperature vacuum quenching heat treatment.

9.Barrel material: Outer sleeve made of 45 steel, inner lined with dual-alloy bushing, wear-resistant alloy a-101 (Fe-Cr-Ni-B + Carbide).

10.Screw length: L = 120 mm/section; 7 sections in total.

11.Vent holes: Zone 1 main feeder (open); Zone 2 auxiliary feeder (open); Zone 6 vent (open); the rest are closed.

12.Vacuum extraction: Water-ring vacuum degassing.

13.Pressure measurement: Pressure sensor measures material pressure, range 0~25 MPa.

14.Temperature control accuracy: ±2°C (Temperature control instrument uses dual-channel intelligent type, with independent temperature control display for each zone (RKC)).

15.Heating power: Approximately 10 kW

16.Screw speed: 0~500 rpm

17.Transmission ratio: 1:2.5

18.Gearbox: The transmission box integrates reduction and torque distribution, adopting a parallel three-shaft design with a compact structure. Reduction, torque distribution, and radial bearings of the two output shafts all use NSK bearings.

19.Cooling system: Soft water circulation cooling.

20.Screen changing method: Hinged quick-open type

21.Electrical control part: Integrated electrical control box with the machine (Chint... main electrical components optional brands).

22.Machine weight: Approximately 1000 kg

23.Main unit dimensions: 1.5 m * 0.45 m * 1.6 m

II. Auxiliary Equipment Section: