16mm or 20mm extruder screw, barrel n nozzle

E16SB300
E20SB300
E16Screw
E20Screw
E16N175
E16N300
E20N175
E20N300
Size:
D16 screw, barrel n nozzle
Weight:
3.200Kgs
Size:
D20 screw, barrel n nozzle
Weight:
3.400Kgs
Size:
Screw only dia 16
Weight:
1.100Kgs
Size:
Screw only dia 20
Weight:
1.250Kgs
Size:
D16 nozzle 1.75mm
Color:
Nozzle only
Weight:
0.350Kgs
Size:
16 extruder nozzle 3mm
Color:
Nozzle only
Weight:
0.350Kgs
Size:
D20 nozzle 1.75mm
Color:
Nozzle only
Weight:
0.350Kgs
Size:
D20 nozzle 2.5mm
Color:
Nozzle only
Weight:
0.350Kgs

$9.00

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Single extruder screw and barrel

CAD files for the 16mm and 20mm screw and barrel please check the link below
https://grabcad.com/library/robotdigg-16mm-and-20mm-screw-for-extrusion-1

Small size 16mm or 20mm extruder screw and barrel for desktop plastic extruders
Technical Information
Main Base materials
1.38CrMoAlA (SACM645)
2.SKD-61 (Special Tool Steel)
3.42CrMo (Ultrahigh Strength Steel)
4.DC53 (Cold Work Die Steel)
5.W6Mo5Cr4V2 (High-Speed Tool Steel)
Main Alloy Materials
1. Ni-based alloy/Deloro alloy
2. Tungsten carbide/Wolfram carbide
3. Nico-based alloy
4. Fe-based alloy
5. Co-based alloy
Processing Techniques
1. Heat treatment
2. Quenching
3. Nitriding treatment
4. Bimetallic alloy welding for screw
5. Bimetallic alloy centrifugal casting for barrel
6. Hard-chrome electroplating
7. Linearity of screw:0.015mm
Technical parameters
Nitriding layer depth:0.5-0.8mm
Nitrided hardness:900-1000HV
Bimetallic layer depth:3 mm
Bimetallic hardness:57~69HRC
Hard-chrome plating hardness after nitriding:≥950HV
Chrome-plating layer depth:0.03-0.09mm
Surface roughness: Ra 0.4
Mini Single Screw Diameter from 16mm,18mm,20mm to 40mm
Common Single Screw 45mm,50mm,55mm,60mm,65mm,70mm,75mm, 80mm,85mm,90mm,95mm,100mm,110mm-220mm
Application:
Suit for HDPE, LDPE, LLDPE, PVC, PP, glass fiber, PPS, PPA, and other special plastic recycling.


Technological Process:
Blanking→Rough Machining→Quenching & Tempering →Semi Finishing Machining→Finish Machining→Nitriding or Bimetallic Treatment→Detecting→Finished Product →Debugging After The Sale
Advantages of screw barrel:
Advanced nitriding technology: we have our own nitriding oven equipment.
Duplex alloy spraying technology
High corrosion & abrasion resistance to prolong the lifetime of screw and barrel
Special alloy powders are sprayed and welded on the screw's ridge/flight, and use different alloy and welding methods for the screw of different functions. For good plasticizing, it has many designs to meet customers' demands. Such as granular type, mutant type, wave type, barrier type, double screen type, shunt type, separation type, exhaust type, and so on.
16mm single screw
The screw barrel is going to be upgraded to Stainless Steel
barrel for 16mm screw
The barrel for 16mm extruder screw is designed for 35mm diameter band heater. Barrel for 20mm single screw will adopt 40mm diameter mica band heater.
barrel for 20mm screw
20mm single screw
Compression Ratios: 16mm extrusion screw is 2.5 and 20mm extrusion screw is 2.8

Planetary geared stepper motors are recommended for pellet extruders.
https://www.robotdigg.com/product/848/
https://www.robotdigg.com/product/2028/

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