Side Bottom Scraper
Technical Specifications
Key Attributes
| Product Name | Side Bottom Scraper / Corner Trough Transition Scraper |
| 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 | Side-Wall to Floor Corner Clearing & Aggregate Wedging Defense |
| 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 | side bottom scraper, corner scraper, BHS scraper blade, SICOMA bottom scraper, concrete mixer scraper, high chromium wear blade, concrete wear parts |
Product Overview
VOTNE Side Bottom Scrapers are heavy-duty wear-resistant blades engineered specifically to sweep the curved transition junction between the vertical side wall liners and the bottom trough liners of industrial twin-shaft, planetary, and pan concrete batching mixers.
The corner junction where side wall liners meet floor drum liners represents a high-stress compaction zone. Fine silica sand and cement paste tend to lodge in this curved transition, compacting into a dense crust under multi-ton arm forces. If neglected, this buildup causes heavy side-liner drag, accelerates corner shell weld erosion, and creates dead mixing pockets. VOTNE side bottom 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 applications mixing crushed granite or iron slag, VOTNE offers optional Plasma Transferred Arc (PTA) Tungsten Carbide (W2C/WC) hardfacing along the curved scraping edge.
Designed with CNC-milled slotted mounting holes for precise 3.5mm to 5.0mm corner clearance tuning, VOTNE side bottom scrapers deliver up to 3 times longer wear life, protecting drum shell corner welds 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 Corner 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 | Side Bottom Corner | 20mm / 25mm | M16 Slotted Hole (2 Holes) | 11.5 kg |
| SICOMA MAO 2250 / 3000 | Side Bottom Scraper | 18mm / 20mm | M16 Slotted Hole (2 Holes) | 9.6 kg |
| Liebherr DW 2.25 / 3.0 | Transition Corner Scraper | 20mm / 25mm | M20 Slotted Hole (2 Holes) | 13.2 kg |
| TEKA TPZ 1500 / 2250 | Planetary Floor Corner | 18mm / 20mm | M16 Slotted Hole (2 Holes) | 8.7 kg |
| Custom OEM Drawings | Custom Side Bottom | 15mm - 25mm | As Per CAD Drawing | Custom |
Key Advantages for Plant Operators
Clears Curved Corner Junctions
Sweeps the critical transition zone between side wall liners and floor drum liners, preventing fine aggregate compaction in trough corners.
Superior Scratching & Abrasion Resistance
High-density M7C3 carbides (or optional PTA Tungsten Carbide hardfacing) resist intense corner friction and aggregate grinding.
Slotted Hole Clearance Tuning
CNC-milled slotted mounting holes allow easy 3.5mm to 5.0mm clearance adjustments to match progressive liner wear profiles.
Prevents Corner Shell Weld Erosion
Continuous scraping prevents cement slurry from migrating behind liner plates, protecting internal mixer shell welds from corrosion.
Standard & Custom OEM Stock
Direct replacement side bottom scrapers in stock for major European and Asian mixer brands, with rapid custom casting available.
Applications & Field Use Cases
VOTNE Side Bottom 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. Where is the Side Bottom Scraper positioned inside a twin-shaft concrete mixer?
The Side Bottom Scraper is mounted on the outer lower mixing arm, positioned specifically to sweep the curved corner radius transition where vertical side wall liners join flat or curved bottom drum liners.
2. What is the recommended corner clearance setting for side bottom scrapers?
Maintain a 3.5mm to 5.0mm clearance gap relative to the liner corner radius. Adjust via the slotted mounting bolt holes during routine maintenance inspections every 20,000 m³ of concrete production.
3. When is PTA Tungsten Carbide hardfacing recommended for side bottom scrapers?
Solid cast Cr26 high-chromium (63–66 HRC) is suitable for standard ready-mix concrete. For plants using abrasive manufactured crushed sand, granite aggregate, or silica quartz, PTA Tungsten Carbide overlay (68–72 HRC) doubles edge life.
4. What clamp bolt torque should be applied during 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 absorb aggregate impact vibration.
5. What are your lead times and trade terms for export orders?
Standard replacement side bottom 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.