The specialized connecting bolts for construction machinery have completed operational condition verification, meeting the high-loss connection requirements for heavy-duty equipment

2026-07-15 08:43:21

Targeting the characteristics of heavy-duty construction machinery such as excavators and loaders—high impact, severe wear, and complex connection conditions—specialized high-strength connecting bolts have undergone full-cycle simulation verification and are now officially mass-produced for market. This series focuses on wear-prone connection components like Bucket teeth, buckets, and track frames, with targeted optimizations in structural design, material selection, and surface treatment. These improvements effectively reduce the likelihood of bolt fractures and loosening under heavy-load operations, extending equipment maintenance cycles.

In terms of structural design, the dedicated bolts for bucket teeth adopt a countersunk flush-fit structure, ensuring a smooth and flat contact with the mounting surface after assembly. This minimizes direct abrasion from sand and materials during operation, while preventing damage to the head from impacts that could lead to difficult disassembly. The material selection involves high-strength alloy structural steel, which undergoes quenching and tempering heat treatment to achieve both surface hardness and core toughness, enabling it to withstand repeated impact loads without brittle fracture. The threaded sections are processed using precision rolling technology, paired with matching anti-loosening Nut assemblies, ensuring stable preload under continuous vibration conditions.

To meet the corrosion requirements of outdoor open-air operations, this series of bolts can be paired with various surface treatments such as hot-dip galvanization and Dacro. The salt spray corrosion resistance duration can be adjusted to suit the climatic conditions of different regions. Currently, the product has undergone installation verification on multiple models of excavators and loaders, achieving both connection stability and service life that meet the usage requirements. It can directly replace imported counterparts of the same specifications, reducing customers' maintenance and procurement costs.

Subsequent efforts will focus on continuously tracking the demand for equipment upgrades in the construction machinery sector, refining specialized fastener solutions for different components and working conditions, and providing more suitable connecting products for the manufacturing and aftermarket maintenance of construction machinery.