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High-Tensile Excavator Dozer Grader Bolt and Nut from China Suppliers and Factory for Reliable Undercarriage Parts
Overview
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:
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Excavators: Securing bucket adapters and side cutters.
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Bulldozers: Fixing cutting edges and end bits.
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Motor Graders: Attaching blade segments.
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Loaders: Bucket tooth systems.
Frequently Asked Questions
Q1
What material is the Tooth Block Screw made from, and why does it matter?
The Tooth Block Screw is forged from 40Cr Alloy Steel and heat-treated to Grade 12.9 tensile strength. This combination provides exceptional toughness, high resistance to stretching and deformation, and ensures reliable performance under the extreme loads and vibrations typical in earthmoving applications.
Q2
Which machines are compatible with this Adapter Bolt?
This bolt is compatible with a wide range of heavy construction machinery including excavators, bulldozers, motor graders, and loaders. It is specifically used to secure bucket adapters, cutting edges, blade segments, side cutters, and tooth systems. It is compatible with standard series such as the 114 series, with exact sizing depending on your machine model.
Q3
What surface treatment options are available for the Tooth Block Screw?
The bolt is available with several surface treatment options including Black Oxide, Phosphating, and Painted finishes. Custom surface treatments can also be arranged upon request. These coatings protect the bolt from rust and corrosion, extending its service life in harsh outdoor and underground environments.
Q4
How does the head design help prevent loosening during operation?
The bolt features a Round/Flat Head with drive slots that is engineered to sit flush against the blade or adapter surface. This precision fit minimizes contact wear and distributes clamping force evenly, significantly reducing the risk of loosening caused by high vibration during heavy-duty cutting and digging operations.
Q5
Can the Tooth Block Screw be customized to match specific OEM requirements?
Yes. The Tooth Block Screw can be customized in terms of dimensions, thread specifications, surface treatment, and head type to meet specific OEM requirements. It is referenced as compatible with standard series (e.g., 114 series), and exact configurations can be tailored based on your machinery's specifications. Please contact us with your requirements for a custom quotation.
Q6
How easy is it to install or replace the Tooth Block Screw on-site?
The Tooth Block Screw is specifically designed for quick and straightforward assembly and disassembly. The drive slot head allows for easy access with standard tools, and the precision-engineered thread engagement enables fast replacement. This minimizes machinery downtime during routine maintenance or emergency field repairs.