SHJS50/100 series (Two-stage extruder) SHJS50/100 series

Item Code:SHJS50/100 series Features:Main technical parameter: Twin-screw extruder: 1) Screw diameter:Φ51.5mm 2) L/D = 40:1 SJ 100 single screw stem extrusion machine 1. Screw stem diameter:Φ100mm 2. Length-diameter ratio L/D:7:1 3. Screw stem top speed:85rpm
  • Description
  • Typical application

Representative Materials Working Capability Schedule Of

SHJS50/100 Two-stage Extruder Package(Reference Values)




Representative materials

Operating capability Kg/h(reference values)

Heat-susceptible plastics

PVC cables, low smoke and low halogen, transparent and for medical use, package, and sole


PE peroxide crossing cables; PE silicon alkyl crossing cables; PE crossing piping; PE and EVA crossing shield



I.   SHJS50/100 technical parameters

  Twin-screw stem length-diameter ratio 401

   Single screw stem length-diameter ratio 71

   Twin-screw stem motor power 45KW DC

   Single screw stem motor power 37KW DC

II.   Machine configuration

a)        SHJ 50 Twin-screw extruder

A. Gear reducer

1  Reduction factor2.51

2  Output shaft rotation speedMAX600RPM

3  Input shaft rotation speedMAX1500RPM

4  The compact host machine features integrated speed reduction and torque transfer with a design of parallel three axles. SKF bearings are used in the reducer, torque transfer device and as the radial bearing in the output shaft.

B. Lubrication oil cooling system

1  Motor of oil pump 0.55KW

2  Lubrication oil model: Hai Brand 6402 made in Shanghai, middium load gear oil, model: 85W/90GL - 4.

3  Brand name: xi' an Oil Pump Plant

4  Condenser modelSL - 303

5  Lube oil pump modelCB - B6

C. Motor of host machine

1  Motor of host machine45KWDC motor)

2  Motor speed ( MAX)1500RPM

3  Brand name: Wannan Motor Plant

D. Screw

1  Screw diameter:Φ51.5mm

2  L/D = 40:1

3  Screw with modular structure

4  The screw core shaft is made of 40CrNiMoA, and the screw thread components connect with the core shaft in an involute curve, which features high intensity, large load, and easy disassembly and assembly.

5  The screw components are made of high quality high-speed tool steel, W6MO5Cr4V2, that receives heat treatment with vacuum hardening at high temperature.

6  Whole hardness: HRC62-64



E. Charging barrel

1.        The barrel body is made of #45 steel, and the "8" shape hole is lined with wearing proof alloy a 101Fe - Cr - Ni - Carbide, hardness: HRC60 - 64, barrel length: L =190mm/section.

2.        The first cylinder is used for feeding materials, the 10th cylinder for extrusion, and the other cylinders are of closed mouth type. Vacuum extractor is mounted on the mono-dual connector.

3.        Soft water circulation system

3.1 The barrel uses soft water cooling.

3.2 The soft water tank separates with the body, which facilitates cleaning and service.

3.3 Electromagnetic valve CEME9313 imported from.

3.4 Water pipe are copper pipes coated with chrome.

3.5 cooling method: water cooling

3.6 cooling pump0.55KW

3.7 water tank capacity80L

F. heating system

Temperature control section  charging barrel section  type of heating piece

        Section 1  material feeding

Zone 1  section 2  cast copper

Zone 2  section 3  cast copper

Zone 3  section 4   cast aluminum

Zone 4  section 5  cast aluminum

Zone 5  section 6  cast aluminum

Zone 6  section 7  cast aluminum

Zone 7  section 8  cast aluminum

Zone 8  section 9  cast aluminum

Zone 9  section 10  cast aluminum

Test the fusing temperature with the fusing temperature thermal couple, and test the materials pressure with the pressure sensor.

H. SJ - 100 single screw stem extrusion machine

1.    Screw stem diameter:Φ100mm

2.    Length-diameter ratio L/D71

3.    Screw stem top speed85rpm

4.    Single screw stem cylinder and screw stem are made with 38CrMoAl after nitrogen treatment, and the core of the screw stem can be water cooled.

5.    The gear of the single screw stem reduction box is made of 20CrMnTi, and the lubrication system is the type of self-lubrication inner-cooling.

6.    Single screw stem cylinder is made of cast aluminum, and is electrically heated. Its temperature is controlled by wind cooling with a fan power of 0.75KW.

7.    The DC 37KW main motor is manufactured by Wannan Motor Plant.

8.    One piece of assembly of double screw stem and single screw stem that are made of stainless steel. Pump vacuum.

9.    Vacuum degasification device

1  SK - 0.4 water ring vacuum pump made by Zibo Lianyi Vacuum Pump Plant

2  Drive motor 1.5kw AC

3  Maximal air inlet capacity24m³/h

4  Working liquid flow0.2 m³/h

I. Electrical control system

a)        3X380VAC 50Hz

b)        Main electric control components are Siemens products.

c)        Control buttons are Schroder products from France.

d)        Twin-screw stem motor is a DC motor with a power of 45KWand the  speed regulator in the double screw stem host machine is the British EUROTHERM.

e)        Single screw stem motor is a DC motor with a power of 37KWand the  speed regulator in the double screw stem host machine is the British EUROTHERM.

f)         The speed regulator in the feeding machine is the Japanese FUJI variable-frequency regulator.

g)        The temperature control meter is a Japanese RKC product with intelligent double channels and a temperature control in each zone.

h)        Pressure meter range: 0- 25Mpa.

i)         The electromagnetic valve is imported from Italy.

j)         Heating is controlled by the temperature control meter via a  solid-state relay with high-temperature wire.

k)        The electric control cabinet controls the temperature control system, the driving system and the interlock control system.

J. Interlock control system

1. Only after the oil lubrication system interlocks with the host machine, i.e., the oil pump starts up, can you start up the host machine.

2. Only after the feeding system interlocks with the host machine, i.e., the host machine starts up, can you start up the feeding machine.

3. When the pressure system interlocks with the host machine, i.e., reaches overpressure, both the host machine and feeding machine should stop operation.

4. When the electric current interlocks with the host machine, i.e., reaches overcurrent, both the host machine and feeding machine should stop operation.

b)        One set of thermal cutting auxiliary machine

a)        One piece of thermal cutting template with 40 orifices (diameter: 2.8mm).

b)        One thermal cutting tool handle and four tools.

c)        One thermal cutting granule stainless steel cover mounted with spotlight and peep hole.

d)        One mess replacement device. Mess is replaced by hydraulic pressure plate. And the motor power of the hydraulic pressure station is 1.5KW.

e)        One thermal cutting granule lathe (motor power: 1.5KW) with a Japanese FUJI frequency regulator.

f)         One Wen T-joint (diameter: 160mm) that connects with the thermal cutting cover.

g)        One first stage high pressure blower with a power of 4KW.

h)        First stage transportation stainless steel pipe (diameter: 130mm, length: 6m).

i)         One first stage cyclone separator made of stainless steel ( diameter: 560mm).

j)         One second stage high pressure blower with a power of 3KW.

k)        Stainless steel storage bin (diameter: 560mm), the second stage transportation stainless steel pipe (diameter: 130mm), one Wen stainless steel tube ( length: 6m).

l)         0.3m2oscillating screen: 1 piece.

m)       One spiral automatic feeding machine.

n)        One set of automatic weighing, package,  and sealing device..

c)        Spare parts

a)        Double screw stem cylinder cast aluminum heaters  2

b)        Single screw stem cylinder cast aluminum heater  1

c)        Loading end mesh replacement cast copper heater  1

d)        One input oil seal and one output oil of seal transmission case   3

e)        Double screw stem components  ~300mm

f)         Hardware tools box  1

g)        Copper rod ø30mmX250mm  1

h)        Asbestos gloves  2 pairs

III.    Training and service

a)        Instruction of field installation

b)        Equipment field debugging and trial run

c)        Training on field operation and maintenance for customer's personnel.

d)        With regard to equipment failure resulted from design or manufacturing quality, 1 year free warranty and guarantee of provision of spare parts.

e)        Long-term technical consultation service.

f)         No matter in or after the warranty period, the supplier, upon receipt of customer's notice on equipment failure, will provide a clear solution within 6 hours. If necessary, the supplier's maintenance officials should arrive at site within 10 hours excluding time spent on the way.


IV.     Installation and debugging: when the machine arrives at site, the customer should install it on the appropriate position according to the specifications provided by the supplier; and then, the supplier should send its officials to the site in order to instruct the customer about trial run and debugging. The customer should provide necessary conditions for trial run. When it runs normally, the ownership title of the machine should be transferred to the customer. And the customer should provide the user acceptance report to the supplier. The customer should provide materials for trial run, and should decide the processing conditions in trial run with consideration of the supplier's opinions.

V.        Documents: 1 set of electric assembly drawings, 1 user's manual of twin-screw extruder, 1 user's manual of speed regulator, 1 user's manual of frequency converter, 1 user's manual of temperature control meter, and 1 assembly drawing of screw stem.

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