Left Side Scraper
Specifiche Tecniche
Key Attributes
| Product Name | Left Side Scraper / End Wall Scraper Blade |
| Material Grade | Cr26 High-Chromium Alloy, PTA Tungsten Carbide Overlay (W2C/WC) |
| Hardness Rating | 62 – 66 HRC (Tungsten Matrix 68–72 HRC / 1800–2200 HV) |
| Boundary Clearance | 3.5mm – 5.0mm Slotted Hole Precision Tuning |
| Primary Function | End Wall Cake Removal & Dead Zone Elimination |
| Machine Compatibility | BHS, SICOMA, Liebherr, Teka, SIMI, ELKON, MEKA, Linz |
| Casting & Hardfacing Process | Vacuum Sand Casting & Plasma Transferred Arc (PTA) Weld Overlay |
| Brand Name | VOTNE |
| Place of Origin | China |
| Scraper Thickness | 18mm, 20mm, 25mm (Customized) |
| SEO Keywords | left side scraper, end wall scraper, BHS scraper blade, SICOMA left scraper, concrete mixer scraper, high chromium wear blade, concrete wear parts |
Product Overview
VOTNE Left Side Scrapers are heavy-duty wear-resistant blades engineered specifically to clear cement paste buildup and fine sand crust from the left vertical end-wall liners of industrial twin-shaft and planetary concrete batching mixers.
Mounted on the outer-most mixing arm along the left section of the mixing trough, left side scrapers operate at the boundary zone where aggregate movement is sluggish. Without effective scraping, sticky cement slurry and silica sand pack against end liners, building up hard crusts that cause material stagnation, drag down motor efficiency, and contaminate subsequent concrete batches. VOTNE left side scrapers utilize ultra-hard Cr26 high-chromium alloy casting metallurgy (62 to 66 HRC), forming a dense concentration of discontinuous M7C3 eutectic carbides (1500 to 1800 HV) bound inside a tempered martensitic matrix. For severe high-abrasion environments mixing crushed granite or quartz, VOTNE offers optional Plasma Transferred Arc (PTA) Tungsten Carbide (W2C/WC) hardfacing along the scraping edge.
Designed with CNC-milled slotted mounting holes for precise 3.5mm to 5.0mm end-wall clearance tuning, VOTNE left side scrapers deliver up to 3 times longer wear life, keeping mixer end walls completely clean and reducing your total wear cost per cubic meter.
Material & Hardfacing Selection
| Alloy Grade | Hardfacing Tech | Hardness | Microstructure | Best Application |
|---|---|---|---|---|
| VOTNE PTA Tungsten Carbide | W2C/WC Carbide Matrix | 68 - 72 HRC (2200 HV) | Tungsten Carbide Particles in Ni-Cr | Extreme Silica Sand & Granite End Wall Scouring |
| VOTNE Cr26 Super High-Cr | Solid Cast High-Cr | 63 - 66 HRC (1800 HV) | Discontinuous M7C3 Carbides | Commercial Ready-Mix & Precast Concrete Plants |
| VOTNE Cr20 Standard High-Cr | Solid Cast High-Cr | 62 - 64 HRC (1500 HV) | Primary Chromium Carbides | Light-Duty Batching Mixers & Mortar |
Technical Specifications & Dimensions
| Mixer Brand / Model | Scraper Blade Position | Standard Thickness | Mounting Bolt Hole Spec | Approx. Weight (kg) |
|---|---|---|---|---|
| BHS DKXS 2.0 / 3.0 | Left End Wall Scraper | 20mm / 25mm | M16 Slotted Hole (2 Holes) | 11.2 kg |
| SICOMA MAO 2250 / 3000 | Left Side Scraper | 18mm / 20mm | M16 Slotted Hole (2 Holes) | 9.4 kg |
| Liebherr DW 2.25 / 3.0 | Left End Wall Blade | 20mm / 25mm | M20 Slotted Hole (2 Holes) | 13.0 kg |
| TEKA TPZ 1500 / 2250 | Planetary Left Scraper | 18mm / 20mm | M16 Slotted Hole (2 Holes) | 8.5 kg |
| Custom OEM Drawings | Custom Left Scraper | 15mm - 25mm | As Per CAD Drawing | Custom |
Key Advantages for Plant Operators
Eliminates End Wall Dead Zones
Continuously scrapes cement paste from left vertical end liners, preventing material stagnation and batch cross-contamination.
Superior Scratching & Abrasion Resistance
High-density M7C3 carbides (or optional PTA Tungsten Carbide hardfacing) resist severe aggregate scouring along end-wall faces.
Slotted Hole Clearance Tuning
CNC-milled slotted mounting holes allow easy 3.5mm to 5.0mm clearance adjustments to compensate for progressive liner wear.
Prevents Motor Overload & Drag
Keeping end-wall clearance clean eliminates aggregate jamming between arm tips and liners, reducing drive motor ampered loads.
Standard & Custom OEM Stock
Direct replacement left scrapers in stock for major European and Asian mixer brands, with rapid custom casting available.
Applications & Field Use Cases
VOTNE Left Side Scrapers are widely specified across heavy-duty industrial concrete mixing operations:
- Commercial Ready-Mix Concrete Batching Plants (Twin-Shaft Mixers 1.0m³ to 4.5m³)
- Precast Concrete Production Facilities (Planetary and Counter-Current Pan Mixers for pipe, beam, and precast slab casting)
- High-Impact Infrastructure & Dam Construction Projects (Mass concrete mixing with 40mm aggregate)
- Cold Recycled Pavement & Road Base Mixing Plants
- Mining Paste Fill & Underground Backfill Preparation
- Heavy Refractory & Industrial Chemical Mixing Equipment
Frequently Asked Questions (FAQ)
1. How do I distinguish a Left Side Scraper from a Right Side Scraper on site?
Look at the leading scraping edge bevel and mounting hole offset. A Left Side Scraper is contoured specifically to sweep the left vertical end liner when mounted on the outer left arm. VOTNE scrapers feature cast letter markings ('L-SCRAP' or 'R-SCRAP') for instant field identification.
2. What is the recommended clearance setting between the left scraper and end liner?
Set the clearance gap to 3.5mm – 5.0mm. A gap smaller than 3.0mm risks metal-to-metal scraping if aggregate wedges, while a gap larger than 6.0mm allows cement paste to build up into a hard crust. Adjust using the slotted bolt holes every 20,000 m³ of batching.
3. When should I specify PTA Tungsten Carbide hardfacing for left scrapers?
For standard commercial ready-mix, solid cast Cr26 high-chromium (62–66 HRC) provides long life. If your plant processes abrasive aggregates like crushed granite, quartzite, or iron ore slag, PTA Tungsten Carbide overlay (68–72 HRC) increases edge life by an additional 200%.
4. What clamp bolt torque should be applied during scraper installation?
For M16 Grade 10.9 countersunk bolts, torque to 210–230 N·m. For M20 bolts, torque to 410–430 N·m. Always use polyurethane backing washers and nylon lock nuts to prevent loosening under vibration.
5. What are your lead times and trade terms for export orders?
Standard replacement left scrapers for BHS, SICOMA, and Liebherr mixers 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 global delivery.