products details
HPL77 Cold Rolling Extruder Shaft 1.2343 H11 Steel For HPL77 Twin Screw Plastic Extruder
|
HPL77 Cold Rolling Extruder Shaft 1.2343 H11 Steel For HPL77 Twin Screw Plastic Extruder
| Brand Name: | OEM |
| Model Number: | TSS002 |
| MOQ: | Negotiable |
| Price: | Negotiable |
| Payment Terms: | T/T,Western Union,Negotiable |
| Supply Ability: | 8000pcs/month |
HPL77 Extruder Shaft
,1.2343 Extruder Shaft
,H11 plastic extruder
HPL77 Cold Rolling Extruder Shaft | 1.2343 H11 Steel For HPL77 Twin Screw Plastic Extruder
HPL77 Cold Rolling Extruder Shaft 1.2343 Material For Plastic Extruder Screw Design
Product Overview
Our HPL77 cold rolling twin screw extruder main shaft adopts premium 1.2343 (X37CrMoV5-1 / AISI H11) hot work alloy steel as base material, specially matched for HPL77 co-rotating parallel twin screw plastic extruder screw assembly design.
We apply cold rolling spline forming technology to replace traditional milling spline processing. This manufacturing upgrade boosts torque bearing capacity by 25%-30% and delivers higher spline dimensional accuracy, stable meshing fit with kneading blocks and screw segments.
The whole shaft undergoes full vacuum heat treatment, final hardness stabilizes at HRC42–45. It supports long-cycle continuous plastic compounding production under high torque, high temperature and heavy shear load conditions.
Core Material Advantage: 1.2343 Hot Work Steel
1.2343 chromium-molybdenum-vanadium alloy steel owns balanced high toughness and thermal shock resistance, outperforming ordinary carbon steel and low-alloy structural steel for extruder main shafts.
- Keep stable hardness above HRC45 under 600℃ long working temperature, resist high-temperature softening and deformation
- Low thermal expansion coefficient, control shaft dimensional deviation during frequent heating & cooling cycles
- Excellent anti-fatigue performance, avoid thermal crack and spline fracture under alternating torque load
- Great nitriding & surface hardening performance, extend service life against abrasive plastic filler (glass fiber, talc, calcium carbonate)
- Uniform internal microstructure, reduce heat treatment distortion for ultra-long precision shaft blanks
Cold Rolling Spline Craft Highlights
- Cold rolling integral involute spline structure, no metal cutting loss, retain complete metal fiber texture
- Surface compressive stress eliminates spline root crack risk, solve frequent shaft breakage point of old milling spline shafts
- Smooth spline surface reduces friction loss during screw rotation, cut extruder energy consumption by 10%+
- High precision tolerance, zero gap fit with standard HPL77 series kneading blocks and screw elements, avoid material leakage and uneven mixing
Technical Parameter
| Item | Technical Specification |
|---|---|
| Model | HPL77 Cold Rolling Extruder Shaft |
| Raw Material | 1.2343 (X37CrMoV5-1 / H11 Hot Work Steel) |
| Spline Form | Cold Rolled Involute Inner Spline |
| Hardness After Heat Treatment | HRC 42–45 |
| Shaft Diameter Range | 10–120mm |
| Custom Length Range | 500–900mm, Max 15000mm |
| Matching Extruder | HPL77 Co-rotating Twin Screw Plastic Extruder |
| L/D Ratio Support | 52:1 Standard, Custom L/D Available |
| Optional Structure | With / Without Internal Cooling Channel |
| Processing Technology | Cold Rolling Spline + Vacuum Quench & Tempering |
| Surface Treatment | Fine Grinding, Optional Nitriding Hardening |
Application Scenarios
- Engineering plastic modification: PA, PC, PBT, PET filled with glass fiber / carbon fiber
- Masterbatch production: Color masterbatch, functional additive masterbatch, flame retardant masterbatch
- Biodegradable plastic compounding: PLA, PBAT, starch blending extrusion
- PVC, PP, PE filling & toughening modification
- Recycled plastic granulation, waste plastic re-compounding
Our Manufacturing Strength
- Imported German 1.2343 pre-hard steel blank, ESR refined high purity material
- Full cold rolling spline production line, one-step forming without secondary milling
- Independent vacuum heat treatment workshop, triple tempering to optimize material toughness
- Full dimensional inspection for spline tooth profile, concentricity, straightness before delivery
- Drawing OEM customization: Adjust shaft length, spline size, add cooling channel as customer’s extruder design
FAQ
Q1: Why choose 1.2343 material instead of H13 (1.2344) for HPL77 extruder shaft?
A1: 1.2343 steel has higher toughness and thermal shock resistance. For HPL77 high-torque frequent start-stop production, it effectively prevents spline root fracture and thermal crack. It balances service life and production cost for medium-filler plastic compounding lines.
Q2: What’s the service life difference between cold rolling spline shaft and traditional milling spline shaft?
A2: Cold rolling spline retains complete metal streamline, torque capacity rises 25%-30%. Under same working condition, service life increases 30%–40%, reduce frequent shaft replacement downtime.
Q3: Can you customize the shaft length and add internal cooling channels?
A3: Yes. We support full drawing OEM, custom shaft length from 500mm to 15000mm. We can process internal cooling hole for high-temperature extrusion process.
Q4: Does this shaft match all HPL77 series twin screw extruders?
A4: Standard involute spline fully fits original HPL77 extruder screw elements, kneading blocks and transmission gearbox. We adjust spline parameters for modified HPL77 equipment.
Q5: What surface treatment options do you provide for the 1.2343 extruder shaft?
A5: Standard precision fine grinding. Optional gas nitriding treatment to raise surface hardness, improve wear resistance for high-filler plastic processing.
Factory Photos
