Concrete Mixer End Liner
Especificações Técnicas
Key Attributes
| Product Name | Concrete Mixer End Liner / End Wall Wear Plate |
| Material Grade | Cr20 / Cr26 High-Chromium Cast Iron, Ni-Hard 4 |
| Hardness Rating | 62 – 66 HRC (Vickers Micro-Hardness 1500–1800 HV) |
| Machine Compatibility | BHS, SICOMA, Liebherr, Teka, SIMI, ELKON, MEKA, Linz |
| Mixer Types | Twin-Shaft, Single-Shaft, Planetary, Pan Mixers |
| Primary Function | End Wall Enclosure & Shaft Seal Housing Defense |
| Casting Process | Vacuum Sand Casting & Automated Isothermal Heat Treatment |
| Brand Name | VOTNE |
| Place of Origin | China |
| Liner Thickness | 15mm, 18mm, 20mm, 25mm (Customized) |
| SEO Keywords | concrete mixer end liner, end wall wear plate, BHS end liner, SICOMA end liner, shaft seal protection liner, concrete wear parts |
Product Overview
VOTNE Concrete Mixer End Liners are high-precision wear-resistant castings designed to protect the flat vertical end walls of twin-shaft, planetary, and pan concrete mixers from heavy axial slurry scouring, aggregate impact, and fine-grit migration.
Mounted directly around the main mixing shaft entry points, end wall liners operate in a challenging hydraulic zone. Fine cement grout and silica sand micro-particles constantly attempt to penetrate the narrow clearance between the rotating mixing arm hub and the end liner wall. If low-grade iron liners wear prematurely or develop surface grooving, cement slurry migrates behind the end plates, destroying shaft seals and causing severe gearbox contamination. VOTNE end liners utilize advanced Cr20 and Cr26 high-chromium alloy metallurgy, forming a dense micro-structure of discontinuous M7C3 eutectic carbides (1500 to 1800 HV) supported by a stress-relieved tempered martensitic matrix.
Engineered with CNC-machined shaft seal bores and precision countersunk bolt holes, VOTNE concrete mixer end liners deliver up to 3 times longer service life than standard cast iron plates, safeguarding main shaft bearings and lowering your total maintenance cost per cubic meter.
Material & Alloy Grade Selection
| Alloy Grade | Chemical Composition | Hardness | Microstructure | Best Application |
|---|---|---|---|---|
| VOTNE Cr26 Super High-Cr | C: 2.8-3.6%, Cr: 24-28%, Mo/V | 63-66 HRC | M7C3 Carbides in Martensite | Severe Fine Silica Sand & Granite Slurry Scouring |
| VOTNE Cr20 Standard High-Cr | C: 2.6-3.4%, Cr: 18-22%, Mo | 62-65 HRC | Discontinuous M7C3 Carbides | Commercial Ready-Mix & General Concrete Plants |
| Ni-Hard 4 White Iron | C: 3.0%, Ni: 5.5%, Cr: 9.0% | 58-62 HRC | Fe3C / M3C Carbide Network | Fine Mortar & Light-Duty Batching Mixers |
Technical Specifications & Dimensions
| Mixer Brand / Model | Liner Position | Standard Thickness | Shaft Bore Diameter | Approx. Weight (kg) |
|---|---|---|---|---|
| BHS DKXS 2.0 / 3.0 | End Wall (Left & Right) | 20mm / 25mm | Precision Machined Bore | 16.8 kg |
| SICOMA MAO 2250 / 3000 | End Wall Segment | 15mm / 20mm | OEM Fit Clearance | 13.5 kg |
| Liebherr DW 2.25 / 3.0 | End Wall Plate | 20mm / 25mm | Heavy Seal Recess | 19.2 kg |
| TEKA TPZ 1500 / 2250 | Planetary Wall Segment | 15mm / 20mm | Center Bore Clearance | 11.4 kg |
| Custom OEM Drawings | Tailored to Spec | 15mm - 25mm | As Per CAD Drawing | Custom |
Key Advantages for Plant Operators
Main Shaft Seal Protection
Precision-machined center bore clearances prevent abrasive cement slurry from penetrating main shaft seals and bearing housings.
Superior Fine Slurry Resistance
High-density M7C3 carbides resist fine silica sand micro-ploughing, maintaining flat sealing surfaces throughout the liner service life.
Flush Countersunk Bolt Fit
CNC-machined countersunk bolt holes ensure mounting bolt heads seat flush, preventing side scraper interference and slurry wedging.
Reduced Maintenance Labor
Extending end liner service life by 3x minimizes plant teardowns, saving maintenance man-hours and reducing crane hire costs.
Standard & Custom OEM Stock
Direct replacement end liners in stock for all major European and Asian mixer brands, plus rapid custom casting for specialized plants.
Applications & Field Use Cases
VOTNE Concrete Mixer End Liners are widely specified across heavy-duty industrial mixing applications:
- Commercial Ready-Mix Concrete Batching Plants (Twin-Shaft Mixers 1.0m³ to 4.5m³)
- Precast Concrete Production Facilities (Planetary and Pan Mixers for pipe, beam, and wall panel casting)
- High-Impact Infrastructure & Dam Construction Projects
- Cold Recycled Pavement & Road Base Mixing Plants
- Mining Paste Fill & Underground Backfill Preparation
- Refractory & Industrial Chemical Mixing Equipment
Frequently Asked Questions (FAQ)
1. How do VOTNE end liners protect main shaft seals from failure?
VOTNE end liners feature precision CNC-machined shaft center bores that maintain exact tolerance clearances (0.5mm to 1.0mm) around mixing arm hubs. This tight clearance, combined with ultra-hard Cr20/Cr26 alloy faces, prevents abrasive cement slurry from washing behind the end wall and eroding main shaft seal packings.
2. Which alloy grade is recommended for end liners: Cr20 or Cr26?
For standard commercial ready-mix concrete using natural sand, VOTNE Cr20 (62–65 HRC) offers excellent durability. If your batching plant processes crushed granite, quartzite sand, or iron ore slag, we recommend VOTNE Cr26 (63–66 HRC) for maximum resistance to high-pressure fine-particle scouring.
3. What installation steps prevent slurry bleeding behind end liners?
Before installing new end liners, thoroughly clean the mixer end wall shell to raw steel. Apply a continuous 3mm bead of high-tack RTV polyurethane sealant or install 2mm EPDM rubber backing gaskets behind each liner plate. Torque M16 Grade 10.9 countersunk bolts to 210–230 N·m.
4. Can VOTNE manufacture custom end liners for older or non-standard mixers?
Yes. We regularly produce custom end wall liners from customer sample plates or 2D/3D CAD drawings. Our foundry can customize shaft bore diameters, bolt hole centers, and outer edge profiles to match any mixer model.
5. What are your lead times and trade terms for export orders?
Standard OEM replacement end liners for BHS, SICOMA, and Liebherr are kept in stock for immediate shipment. Custom casting orders take 15 to 25 days. We support EXW, FOB, CIF, and DDP trade terms with worldwide delivery.