
PRODUCT DETAILS
Heavy Duty Cr12MoV Industrial Bulk Bag Unpacker Blades
Ma'anshan Guangchuan Machinery Knife Mold Technology Co., Ltd. is a professional manufacturer of heavy-duty bulk bag unpacker blades engineered for industrial bulk material unloading and automated bag opening lines. Our precision-ground cutters deliver clean, smooth penetration through thick woven FIBC ton bags, heavy plastic sacks and composite packaging without fiber fraying or material contamination. Manufactured from premium wear-resistant alloy steels with vacuum quenching and CNC edge grinding, these blades maintain long-lasting sharpness and stable performance under continuous high-cycle operation.
- Order(MOQ)
- 1
- Payment
- TT,LC
- Product Origin
- China
- Color
- N/A
- Shipping Port
- Ma'anshan Shipping Port
- Lead Time
- 30 days
Need a custom size or material? Send us your drawing.
Product details
Bulk bag unpacker blades feature reinforced pointed tips and precision-machined bevel edges, designed to pierce thick woven bag layers with minimal cutting resistance. The accurately positioned mounting holes ensure secure, vibration-free installation on all mainstream unpacking machines, reducing equipment load and delivering consistent bag opening efficiency for bulk processing facilities.
Technical Specifications
|
Feature |
Technical Details |
| Material | Cr12MoV (SKD11), D2, HSS (M2), 9CrSi Alloy Steel (Customizable) |
| Hardness | 58-62 HRC, optimized for woven bag abrasion and impact resistance |
| Tolerances | Straightness ≤ 0.005mm; Flatness ≤ 0.004mm; Hole Position Tolerance ±0.01mm |
| Blade Length | 150mm to 800mm (Fully customizable per unpacker model) |
| Thickness Range | 3mm to 12mm (Tailored for different bag thickness and load levels) |
| Edge Geometry | Single bevel, double bevel, reinforced pointed tip, custom cutting angles |
| Mounting Type | Precision drilled fixing holes, custom hole quantity and spacing |
| Processing | Vacuum heat treatment, deep cryogenic stabilization, CNC precision grinding |
Main Features
- Reinforced Piercing Tip Structure: Thickened sharp tip design easily penetrates multi-layer woven ton bags and heavy packaging materials, avoiding slipping and incomplete cutting during high-speed automatic unpacking.
- High Abrasion Resistant Alloy Matrix: Premium Cr12MoV tool steel with optimized hardening resists long-term fiber abrasion and minor impact from sand or granular impurities inside bulk bags.
- Precision Positioned Mounting Holes: CNC-drilled fixing holes match machine tool holders with zero offset, ensuring stable blade alignment and preventing loosening during continuous cyclic operation.
- Smooth Low-Resistance Cutting Edge: Mirror-polished bevel edges reduce cutting friction, prevent fiber snagging and fraying, and minimize packaging debris mixing into bulk materials.
- Stress-Relieved Impact Toughness: Cryogenic treatment eliminates internal steel stress, balancing edge hardness and body toughness to resist chipping when hitting hard foreign objects in bags.
Advantages
- Clean Contamination-Free Unpacking: Sharp, smooth edges cut through packaging cleanly without tearing, reducing fiber debris and foreign material contamination of bulk contents.
- Longer Production Uptime: Superior wear resistance significantly extends blade service life, cutting the frequency of blade replacement and equipment downtime.
- Stable Automated Operation: Precise mounting dimensions ensure vibration-free running on automatic unpacking lines, supporting continuous high-volume bulk material discharge.
- Broad Packaging Compatibility: Performs reliably on PP woven ton bags, FIBC bulk bags, jute sacks, paper-plastic composite bags and other heavy packaging types.
- Cost-Effective OEM Alternative: Factory-direct pricing delivers OEM-grade durability and precision at substantially lower procurement costs for bulk handling facilities.
Product Applications
- Machine Compatibility: Automatic bulk bag unpackers, FIBC bag opening stations, ton bag discharging systems, automated unpacking production lines.
- Material Compatibility: Woven PP ton bags, FIBC bulk sacks, jute bags, heavy plastic sacks, paper-plastic composite packaging, woven fabric bags.
- Industry Applications: Chemical raw material processing, grain & feed handling, mineral powder unloading, food bulk processing, industrial bulk logistics, plastic pellet manufacturing.

Why Choose Us
- Bulk Unpacking Industry Expertise: Deep understanding of cutting challenges in woven bag and heavy packaging scenarios, with edge designs optimized for abrasion and piercing performance.
- Strict Pre-Delivery Inspection: Every blade undergoes comprehensive testing of hardness, dimensional accuracy and edge sharpness to ensure consistent batch quality.
- Full Customization Capability: Custom blade lengths, thicknesses, hole layouts and edge profiles available to match non-standard unpacker models and unique process requirements.
- Advanced Production Facilities: State-of-the-art CNC grinding equipment and vacuum heat treatment lines guarantee stable, high-precision mass production.
- Targeted Technical Support: Professional guidance on blade material selection, installation gap setting and daily maintenance to optimize unpacking line efficiency and blade lifespan.
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