Technical Parameters
| Item | Specification |
|---|---|
| Product Name | Silicone Rubber Screw Barrel |
| Machine Type | Silicone Rubber Injection Machine / Rubber Extruder |
| Screw Diameter | Ø20–300 mm |
| Length/Diameter Ratio (L/D) | 8:1–24:1 (Custom Available) |
| Compression Ratio | 1.0:1–1.5:1 |
| Screw Structure | Single Flight / Barrier / Mixing Section (Customized) |
| Screw Material | 38CrMoAlA, SACM645, SKD61, SKD11, Tool Steel |
| Barrel Material | 38CrMoAlA, Alloy Steel |
| Surface Hardness | HV ≥ 900 (Nitrided) |
| Nitriding Depth | 0.5–0.8 mm |
| Chrome Plating Thickness | 0.03–0.08 mm (Optional) |
| Bimetallic Alloy Thickness | 1.5–3.0 mm (Optional) |
| Surface Roughness | Ra ≤ 0.4 μm |
| Straightness | ≤0.015 mm / 1000 mm |
| Temperature Resistance | Up to 300°C |
| Applicable Materials | Silicone Rubber, LSR, HCR, VMQ, Fluorosilicone |
| Processing Method | Injection / Extrusion |
| Service Life | 2–5 Times Longer than Standard Screw Barrel* |
*Depending on processing conditions and material formulation.
Material Options
| Material | Features |
|---|---|
| 38CrMoAlA | Standard nitriding steel with excellent toughness |
| SACM645 | High-strength nitriding steel for long service life |
| SKD61 | High-temperature resistance |
| SKD11 | Superior wear resistance |
| Bimetallic Alloy | Excellent resistance to abrasion and corrosion |
Surface Treatment Options
| Treatment | Advantages |
|---|---|
| Gas Nitriding | High hardness and excellent wear resistance |
| Ion Nitriding | Uniform hardness with minimal deformation |
| Hard Chrome Plating | Improved corrosion resistance and smooth surface |
| Bimetallic Alloy Lining | Outstanding wear resistance for abrasive compounds |
| Polishing | Reduces material adhesion and improves cleaning efficiency |
Performance Features
- Optimized low-compression screw design for silicone rubber.
- Excellent plasticizing uniformity.
- Stable material conveying with minimal shear.
- Accurate temperature control.
- Reduced material degradation.
- Smooth surface minimizes silicone residue.
- Excellent wear and corrosion resistance.
- Easy cleaning and color change.
- Suitable for continuous production.
- Custom designs available according to machine brand and product requirements.
Compatible Machine Brands
Our silicone rubber screw barrels are compatible with equipment from:
- REP
- DESMA
- ARBURG
- Engel
- KraussMaffei
- BOY
- Multitech
- Yizumi
- Haitian
- Other custom rubber injection and extrusion machines
Applications
Suitable for processing:
- Liquid Silicone Rubber (LSR)
- High Consistency Rubber (HCR)
- Medical Silicone Products
- Food-grade Silicone Products
- Baby Products
- Automotive Seals
- Electronic Components
- Silicone Keypads
- Industrial Gaskets
- Silicone Tubes
- Silicone Profiles
- Silicone Hoses
Optional Customization
We provide complete OEM & ODM manufacturing services:
- Custom screw geometry
- Barrier screw design
- Mixing section optimization
- Wear-resistant alloy coating
- Corrosion-resistant alloy coating
- Mirror-polished surface
- Customized L/D ratio
- Special feed section design
- Drawing-based manufacturing
- Reverse engineering from samples
Quality Control
Every silicone rubber screw barrel is inspected before delivery.
| Inspection Item | Standard |
|---|---|
| Material Certification | 100% |
| Hardness Test | ✔ |
| Nitriding Depth Test | ✔ |
| Straightness Inspection | ✔ |
| Dimension Inspection | ✔ |
| Surface Roughness Inspection | ✔ |
| Dynamic Balance (Optional) | ✔ |
| Final Performance Inspection | ✔ |
Why Choose Our Silicone Rubber Screw Barrel?
- Designed specifically for silicone rubber processing
- Stable conveying with low shear and minimal material degradation
- Excellent wear and corrosion resistance
- High precision machining with strict quality control
- OEM & ODM customization available
- Compatible with most global rubber injection and extrusion machines
- Fast delivery and worldwide technical support