Hengshan Technology | Shock Absorber Piston Rod Products (Part II)
2026-07-06
Whether a car’s shock absorber can effectively cushion bumps hinges on the quality of its piston rod. Hengshan Technology specializes in the precision machining of shock absorber piston rods. This article will primarily introduce two core products: 22*378 Milling hexagonal shock absorber piston rod and 20*359 Milling single- and double-sided shock absorber piston rods 。
22*378 Milling hexagonal shock absorber piston rod
As a core, high-precision load-bearing component of automotive shock absorbers, it is manufactured through precision machining using high-strength, wear-resistant steel. The rod body is smooth and polished, with excellent tensile, compressive, and fatigue resistance. . Both ends are precision‑turned with standard connecting threads, enabling precise locking and mating with the upper and lower components of the shock absorber; the rod body Integrated milling hexagonal structure , with symmetrical and precise dimensions and a secure, snug fit. It integrates multiple functions into one: Anti-rotation positioning, wrench‑based tightening and loosening, and assembly‑limit stops eliminate issues such as slippage during installation and torsional misalignment. 。
Compatible with various hydraulic shock absorber assemblies for passenger cars and commercial vehicles. It stabilizes the transmission of damping forces, cushions road‑induced bumps and vibrations, enhances shock‑absorption stability during operation, improves ride comfort, simplifies assembly and maintenance, and extends the overall service life of the shock absorber.
20*359 Milling single- and double-sided shock absorber piston rods
It is precision-machined and formed from high-strength alloy steel, The rod exhibits high hardness, excellent wear resistance, and outstanding flexural and fatigue strength. . Precision‑turned standard connecting threads at both ends ensure accurate alignment and secure fastening of the shock absorber’s upper and lower assemblies, along with the rod body. Single-sided or double-sided flat surfaces can be milled as required. , with high dimensional accuracy and controllable symmetry. It also features Assembly positioning, anti-rotation limiting, tooling clamping, and disassembly/fastening functions , effectively preventing slippage during installation and misalignment during operation, while being compatible with automated assembly as well as subsequent maintenance and disassembly.
Extensively equipped with a full range of hydraulic shock absorbers for both passenger and commercial vehicles. It stably transmits damping force, cushions road bumps and vibrations, ensures the shock absorber operates smoothly and reliably, enhances ride comfort and driving safety, and extends the overall service life of the shock absorber assembly.
Choose the right solution on demand—avoid common pitfalls.
22*378 Hexagonal Milling Model ： The shaft is milled with a hexagonal profile in one piece; a wrench is required for removal. In loading and heavy-load conditions prone to torsion, the anti-torsion limit‑stop performance is significantly enhanced.
20*359 Milling single-sided and double-sided styles ： Shaft Plane Milling Machining supports automated tooling clamping and assembly, with flexible adjustment of concentricity and enhanced rod hardness.
Hengshan Technology specializes in the machining and manufacturing of shock absorber piston rods. The entire production line is equipped with CNC machinery, and every process—from thread cutting and milling to surface wear‑resistant treatment—adheres to unified manufacturing standards, ensuring strict control over finished‑product dimensional accuracy and surface quality.
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2026-09-14
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