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High-Tensile Bolt and Nut for Excavator Dozer Grader - China Suppliers Factory Parts
Overview
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This high-tensile Tooth Block Screw (also known as an Adapter Bolt or Segment Bolt) is a critical fastening component designed for heavy-duty earthmoving machinery. It is engineered to securely attach cutting edges, blade segments, and adapter tips to excavator buckets and bulldozer blades. Manufactured to meet rigorous industry standards, this bolt ensures maximum stability and safety in extreme operating conditions.
Key Features
- 💪 Superior Material Strength: Forged from high-quality 40Cr Alloy Steel, offering excellent toughness and durability.
- 🏆 High Hardness Grade: Heat-treated to achieve Grade 12.9 tensile strength, providing exceptional resistance to stretching and deformation.
- 🎯 Precision Design: Features a specialized head profile (Round/Flat Head with drive slots) designed to sit flush against the blade or adapter, minimizing wear and preventing loosening under high vibration.
- 🛡️ Anti-Corrosion Finish: Treated with a protective coating (black oxide or similar) to resist rust and corrosion in harsh environments.
- ⚙️ Easy Installation: Designed for quick assembly and disassembly, reducing machinery downtime during maintenance.
Technical Specifications
| Product Name | Tooth Block Screw / Adapter Bolt |
| Material | 40Cr Alloy Steel |
| Hardness Grade | 12.9 (High Tensile) |
| Head Type | Round/Flat Head with Drive Slots (as per image) |
| Thread Type | Metric Coarse Thread (Standard for construction machinery) |
| Surface Treatment | Black Oxide / Phosphating / Painted (Customizable) |
| OEM Number Reference | Compatible with standard series (e.g., 114 series, specific numbers depend on exact sizing) |
Applications
Widely used in the undercarriage and ground engaging tools of various construction machinery, including:
- 🚜 Excavators: Securing bucket adapters and side cutters.
- 🏗️ Bulldozers: Fixing cutting edges and end bits.
- 🛣️ Motor Graders: Attaching blade segments.
- 🔧 Loaders: Bucket tooth systems.
Frequently Asked Questions (FAQ)
Q
What is a Tooth Block Screw used for?
A Tooth Block Screw (also called an Adapter Bolt or Segment Bolt) is used to securely fasten cutting edges, blade segments, and adapter tips to excavator buckets, bulldozer blades, and other ground engaging tools on heavy construction machinery.
Q
What material is the Tooth Block Screw made from?
It is forged from high-quality 40Cr Alloy Steel, which provides excellent toughness, high tensile strength, and long-term durability under extreme working conditions.
Q
What does Grade 12.9 mean for this bolt?
Grade 12.9 is one of the highest strength classifications for metric bolts. It indicates the bolt has been heat-treated to achieve exceptional tensile strength, making it highly resistant to stretching, deformation, and failure under heavy loads and vibration.
Q
Can the surface treatment be customized?
Yes. The surface treatment options include Black Oxide, Phosphating, and Painted finishes. Customization is available depending on your specific application environment and requirements.
Q
Which machines are compatible with this Adapter Bolt?
This bolt is compatible with a wide range of heavy-duty construction machinery, including excavators, bulldozers, motor graders, and loaders. It is compatible with standard OEM series (e.g., 114 series), and sizing can be confirmed based on your specific machine model.
Q
How does the anti-corrosion coating benefit performance?
The protective anti-corrosion coating (such as black oxide) shields the bolt from rust and environmental degradation when operating in wet, muddy, or chemically harsh conditions. This extends the service life of the bolt and helps maintain consistent clamping force over time.