cutting edges and end bits are to suit dozers, scrapers, graders, loaders and excavators
TIGERLEVEL have a complete range of blades, edges and end bits, shanks, teeth, ripper tynes, router bits and plow bolts and nuts to suit virtually every machine. Customer parts can be made to suit specialist requirements.We stock a complete range of thicknesses in standard and heavy duty.Our bits and edges are heat treated through hardened, quenched and tempered alloy steel.
A wide range of grader blades is available in two specifiions
High Carbon steelC80, and 30MnB for
Double bevelled curved
Double bevelled flat
Flat Grader Blades
· Curved Grader Blades
· Serrated Grader Blades
A wide range of cutting edges is available in two specifiions
16Mn, and 30MnB for
Double bevelled Flat
Single bevelled flat
End bits
Blades and cutting edges are the frontline, wear components attached to the leading edges of buckets, blades, and other digging or grading attachments on heavy machinery like excavators, loaders, and bulldozers. They are the primary points of contact with abrasive materials like soil, rock, and rubble, designed to penetrate, cut, and slice through the ground efficiently while protecting the much more expensive base attachment from rapid wear.
1. Key Functions and Importance
Penetration and Efficiency: A sharp, robust cutting edge concentrates force onto a narrow area, significantly reducing the energy required to dig into compacted or frozen material, thereby improving machine productivity and fuel efficiency.
Material Protection: They act as a sacrificial wear part. Instead of the bucket's main body wearing down, the relatively inexpensive and easily replaceable cutting edge absorbs the abrasion.
Load Retention: Properly maintained edges help create a clean cut, allowing the bucket to fill more completely and retain material better during lifting and transport.
Specialized Tasks: Different profiles (e.g., straight, spade-nose, serrated) are optimized for specific applications like grading, trenching, or rock digging.
2. Materials and Manufacturing
Cutting edges and blades are typically made from **high-strength, abrasion-resistant steel (AR steel)**. This steel is alloyed and heat-treated to achieve an optimal balance of:
Surface Hardness: To resist abrasive wear (measured on the Brinell or Rockwell scale).
Core Toughness: To withstand high-impact loads without cracking or breaking.
Manufacturing processes like quenching and temperingare critical to achieving these properties. Some advanced edges may also feature hardfacing—a layer of extremely hard weld material applied to critical wear zones for extended life.
3. Maintenance and Economics
Regular Inspection and Rotation: Straight cutting edges can often be rotated (flipped top to bottom) to utilize both wear surfaces before replacement. End bits and teeth should be checked for excessive wear or breakage.
Timely Replacement: Worn-out edges dramatically increase digging resistance, strain the machine's hydraulic system, accelerate wear on the base bucket, and lead to higher fuel consumption. Replacing them on schedule is a key cost-saving maintenance practice.
Heavy Equipment Blades and Cutting Edges are critical wear components widely used in Construction Machinery, mining equipment, metallurgy, and scrap processing industries. Their performance directly determines operational efficiency, energy consumption, and overall service life. These components must maintain stable cutting capability under extreme conditions such as high impact loads, severe abrasion, and elevated temperatures. Core technologies focus on material selection, geometric structure optimization, and surface treatment to balance wear resistance, impact toughness, and cutting efficiency.
Material selection is the foundation of performance. Mainstream materials are categorized based on hardness, toughness, and heat resistance to meet different working conditions:
Common grades include 6CrW2Si, Cr12MoV, and H13. These materials provide an excellent balance of toughness and wear resistance with strong impact performance. They are widely used in heavy-duty shearing applications such as scrap cutting and thick plate processing.
Manufactured through sintering tungsten carbide and cobalt, cemented carbide offers hardness levels of HRA 89–93. Its wear resistance is 5–8 times higher than alloy tool steel, with heat resistance up to 800°C. It accounts for approximately 70% of the industrial cutting blade market due to its durability in continuous high-hardness material cutting.
PCD (Polycrystalline Diamond): Suitable for non-ferrous metals and composite materials.
PCBN (Polycrystalline Cubic Boron Nitride): Designed for hardened steels above HRC45, offering service life dozens of times longer than cemented carbide in precision heavy-duty finishing.
Grades such as NM500 (approx. 500 HBW hardness) provide balanced impact resistance and abrasion performance. Commonly used as shredder and crusher blade substrates.
Geometric configuration directly influences cutting force, chip evacuation, and edge life. Key parameters include rake angle, clearance angle, inclination angle, and edge radius.
Rake Angle (5°–15°): Smaller rake angles are preferred in heavy-duty applications to strengthen edge integrity and prevent chipping.
Clearance Angle (3°–8°): Reduces friction between the tool and workpiece while maintaining durability.
Inclination Angle: Negative inclination angles are often applied in heavy cutting to enhance impact resistance.
Edge Preparation: Chamfering and edge honing (0.02–0.1 mm radius) reduce edge breakage risk under high-impact conditions.
heavy equipment blades and cutting edges serve diverse industries and equipment types.
| Blade Type | Typical Structure | Core Material | Equipment | Application |
|---|---|---|---|---|
| Shear Blades | Long strip, single/double edge | 6CrW2Si, Cr12MoV | Hydraulic shears, scrap cutters | Thick steel plates, scrap metal |
| Shredder Blades | Claw, circular, square | NM500, carbide | Single/dual shaft shredders | Waste, plastics, scrap metal |
| Milling Inserts | Polygonal, multi-edge | Carbide, PCBN | Gantry mills, face mills | Cast steel, cast iron machining |
| Breaker Tips | Pointed, flat | Wear-resistant alloy | Hydraulic breakers | Rock, concrete crushing |
| Cutting Edge Bars | Replaceable strips | Carbide, HSS | Planers, lathes | Large workpiece machining |
Surface engineering plays a vital role in performance improvement.
TiN, TiCN, and TiAlN coatings provide hardness levels of 2000–3200 HV and heat resistance up to 900–1100°C. These coatings reduce friction and extend tool life by 3–5 times in high-speed, high-temperature cutting.
Tungsten carbide particles are deposited on the cutting edge to locally reinforce wear resistance. This method is cost-effective for large blades compared to full carbide construction.
Processes such as quenching and tempering optimize the microstructure. For example, H13 steel shows significantly improved hot hardness and toughness after proper heat treatment, making it suitable for thermal shearing operations.
Heavy Equipment Blades and Cutting Edges are evolving toward higher wear resistance, longer service life, and intelligent management systems.
Ultra-fine grain cemented carbide improves both toughness and wear resistance.
Composite structures (steel substrate + superhard edge) balance cost and performance.
Replaceable cutting edge systems reduce downtime and maintenance costs.
Digital edge inspection and precision regrinding technologies enhance predictive maintenance and extend lifecycle management.
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Factory 1：Hanjia village , Baidu industrial zone , Fenghua Area ,Ningbo City,315145 Zhejiang Province ,China
Factory 2：No.2 Chongfeng Rd , Sihong Town,Suqian city 223900 ,Jiangsu Province ,China
Sales Office：Rm1803, Changjiang international Building ,Beilun Area ,Ningbo city 315806, Zhejiang ,Province
Email：tig@tigerlevel.com/sales@tigerlevelmachinery.com
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Tel：+86-15857482399 +86-13586913241
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website：www.tigerlevel.com
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