products details
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Alloy Steel Screw And Barrel 50-300mm Diameter Twin Screw Extruder Spare Parts
| Brand Name: | OEM |
| Model Number: | ESB002 |
| MOQ: | Negotiable |
| Payment Terms: | T/T |
| Supply Ability: | 5000pcs/month |
Alloy Steel screw and barrel
,50mm screw and barrel
,300mm extruder spare parts
Alloy Steel Screw and Barrel 50-300mm Diameter | Twin Screw Extruder Spare Parts
Our alloy steel screw and barrel are integrated matched core spare parts specially designed for co-rotating parallel twin screw extruders, covering full outer diameter specifications from mini 50mm lab type to heavy-duty industrial 300mm large-size models. The whole set includes alloy twin screw barrel, alloy spline drive shaft, alloy conveying elements, KB kneading blocks, SME/ZME mixing segments and connecting accessories, forming a complete extrusion plastic melting, conveying and homogenization system.
The barrel blank adopts high-strength integral alloy steel forging, with double 8-shaped precision inner bore fine grinding. The screw components use WR5 powder metallurgy alloy, 6542 high-speed steel and nickel alloy as raw materials. After integral vacuum quenching and tempering heat treatment, stable hardness HRC58–62 is achieved, equipped with optional bimetallic wear-resistant liner inside barrel to further extend service life. All 50–300mm diameter screw and barrel strictly follow OEM dimensional standards, fully interchangeable with JSW TEX, STS, Leistritz ZSE series extruders, widely applied to masterbatch, WPC composite, biodegradable plastic, glass fiber modified plastic and waste plastic recycling production lines.
| Parameter Item | Standard Specification | Tolerance Standard |
|---|---|---|
| Full Product Name | Alloy Steel Screw and Barrel 50-300mm Diameter Twin Screw Extruder Assembly | — |
| Outer Diameter Range | 50mm, 54mm, 65mm, 75mm, 85mm, 95mm, 110mm, 135mm, 160mm, 200mm, 250mm, 300mm | ±0.01mm |
| Barrel Structure | Integral alloy steel forging, twin 8-shaped inner bore, multi-section combined modular design | — |
| Barrel Inner Liner Option | Standard alloy liner / WR5 bimetallic wear-resistant liner | Ra ≤0.8μm polished finish |
| Matching Screw Components | Alloy spline shaft, conveying elements, all-angle kneading blocks, slotted mixing segments, reverse anti-backflow blocks | Custom lead/length ratio available |
| Main Alloy Raw Materials | Barrel: 42CrMo alloy steel; Screw parts: WR5 powder alloy, W6Mo5Cr4V2, 45# nickel alloy | — |
| Overall Hardness After Heat Treatment | Screw parts HRC58–62; Barrel body HRC42–48; Bimetallic liner HRC60–65 | ±1 HRC |
| Surface Treatment | Barrel inner bore ultra-fine polishing; Screw elements sandblasting matte anti-stick finish | Ra 1.6–3.2μm |
| Standard Center Distance | Matched with corresponding OD (43.2mm for 54mm, 52mm for 65mm, etc.) | ±0.01mm |
| Intermeshing Clearance Between Screws | 0.18–0.35mm (adjustable by diameter model) | ±0.02mm |
| Max Continuous Working Temperature | ≤380℃ high temperature resistance | — |
| Processing Technology | 5-axis full CNC grinding, deep hole internal bore machining, vacuum stress relief heat treatment | — |
| Compatibility | 100% OEM interchangeable for TEX, STS, ZSE series co-rotating twin screw extruders | Direct installation without modification |
- Complete 50–300mm full diameter size coverage
We support small lab 50mm test equipment to 300mm super large high-throughput production line one-stop supporting, single section barrel, single screw parts or full complete assembly can be customized according to customer production output demand. - Excellent wear and corrosion resistance dual performance
Alloy steel base material plus vacuum heat treatment ensures long service life. Optional bimetallic lining solves abrasion problem of high-calcium carbonate, glass fiber and corrosive PVC materials, effectively reducing equipment downtime and replacement cost. - Precise double bore machining stable extrusion quality
The twin 8-shaped inner bore of alloy barrel is processed by deep hole precision grinding, uniform surface smoothness without step difference, no material dead zone, avoid plastic carbonization and black spot defects during long-term continuous operation. - Complete matched screw and barrel assembly
Spline shaft, conveying blocks, kneading segments and barrel are produced with unified dimensional benchmark, consistent meshing clearance, no abnormal vibration or uneven shearing during high-speed rotation, improve plastic mixing uniformity and pellet finished product yield. - Strong structural stability & long service life
Integral alloy forging barrel eliminates welding cracking risk under high temperature and high pressure; alloy screw parts have high torsion resistance, not easy to break or tooth skip under long-term high torque load.
- Biodegradable PLA, PBAT, starch-based modified plastic compounding granulation
- WPC wood plastic composite granulation and profile extrusion production
- Color masterbatch, carbon black, functional filler masterbatch manufacturing
- Glass fiber, mineral powder reinforced engineering plastic modification
- Flame retardant, anti-static, medical food-grade special plastic extrusion
- Waste plastic recycling, devolatilization and regenerated pellet production
- Laboratory small twin screw extruder formula test & medium mass production
- Full flow strict inspection: raw material spectrum component test → CNC precision machining → vacuum heat treatment → hardness test → dimensional tolerance detection → surface roughness inspection before delivery.
- ISO9001 certified factory production, all alloy steel screw and barrel meet international extrusion equipment spare part standards.
- Export-grade anti-rust oil treatment + fumigated wooden case packaging, effectively protect alloy surface during long-distance sea transportation.
- Standard diameter screw and barrel sets in stock for fast delivery within 3–7 working days; customized non-standard length, liner material and special surface treatment orders deliver in 15–30 working days.
- 12-month quality warranty, professional technical team provides screw configuration matching and barrel heating section layout design support.
A: Our alloy steel screw and barrel cover outer diameter from 50mm up to 300mm, including all common specifications 50/54/65/75/85/95/110/135/160/200/250/300mm, custom special diameter acceptable.
A: Screw elements reach uniform HRC58–62 after vacuum quenching; alloy barrel body HRC42–48, optional bimetallic inner liner up to HRC60–65 for ultra-high wear working conditions.
A: Yes. Equipped with WR5 bimetallic wear-resistant liner, the alloy barrel can adapt to high glass fiber, talc and calcium carbonate filled plastic long-term continuous extrusion, service life increased by 2–3 times compared with ordinary alloy barrel.
A: 100% interchangeable. All center distance, flange mounting hole, inner bore and spline parameters strictly follow OEM original standards for plug-and-play replacement.
A: Support split purchase: single-section alloy barrel, individual conveying/kneading screw blocks, spline shaft and full complete assembly are all available for separate order.
