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.
Bolt-on blades are modular cutting components secured to the tool body or holder using bolts. They are widely applied in lathes, milling machines, pipe cutting machines, crushers, shearing equipment, and other industrial machinery. Compared with integral or welded blades, bolt-on blades offer easy replacement, reliable positioning, and reusability, effectively reducing downtime and operating costs.
The cutting edge, directly involved in cutting, shearing, or crushing, determines machining efficiency, workpiece quality, and equipment stability. Its structural form, edge treatment, and mounting precision are critical for performance.
Bolt-on blades are commonly made from alloy tool steel, mold steel, or wear-resistant alloy steel. In heavy-duty applications, quenched and tempered alloy steel may be used. Heat treatment ensures edge hardness of HRC55–62, balancing wear resistance with impact toughness.
The blade body includes pre-drilled positioning holes, countersunk holes, and locating grooves to ensure precise fit with the holder. After installation, the blade remains stable, minimizing displacement, loosening, or runout.
The core benefit of the bolt-on structure is rapid blade replacement. When the cutting edge wears or chips, simply loosen the fastening bolts, remove the old blade, install a new one, and retighten. No complete tool replacement is needed, making it ideal for continuous production lines and batch processing.
The bolted design distributes forces evenly, allowing the blade to withstand significant cutting and impact loads. It is suitable for cutting, grooving, planing, and sheet metal shearing operations.
Cutting edge geometry is critical for bolt-on blades. Depending on the application, edges can be straight, wavy, stepped, or pointed. Edge treatments such as precision grinding, chamfering, and blunting prevent microcracks and enhance strength.
During installation, edge projection, angle, and clearance must be carefully controlled to ensure smooth, vibration-free cutting without scratching the workpiece.
| Parameter | Typical Range | Function |
|---|---|---|
| Cutting edge hardness | HRC55–62 | Ensures wear resistance and reduces abrasion |
| Edge chamfer | 0.05–0.3 mm | Strengthens edge, reduces chipping |
| Mounting accuracy | 0.01–0.05 mm | Ensures dimensional consistency and surface finish |
| Bolt torque | 10–40 N·m | Secures blade firmly, prevents loosening during cutting |
| Rake angle | 0°–15° | Affects sharpness and chip evacuation |
| Effective cutting edge length | 20–300 mm | Matches processing width and equipment specifications |
Bolt-on blades may encounter edge wear, bolt loosening, misalignment, or chipping. Performance and service life can be improved by selecting appropriate materials, following heat treatment standards, optimizing cutting parameters, regularly checking bolt torque, and keeping the holder clean and flat.
Bolt-on blades are versatile, used in metal bar and pipe cutting, sheet metal shearing, profile machining, woodworking, rubber and plastic trimming, and material crushing. Their simple structure, ease of maintenance, and adaptability make them ideal for medium- to low-speed, heavy-load, and continuous production scenarios.
Overall, bolt-on blades rely on a reliable mechanical clamping structure for fast replacement. Combined with carefully designed and treated cutting edges, they maintain machining precision and production efficiency, significantly improving tool utilization and cost-effectiveness. This design is a mature and widely used solution for industrial cutting and shearing equipment.
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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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