Telescopic single-acting hydraulic cylinders are key parts for hydraulic drive systems in construction machinery, mining gear, agricultural machines and special-purpose vehicles. Customization is their biggest selling point, plus we have a solid lineup of standardized models. They deliver steady one-way extension performance and flexible tech solutions, fitting the unique working needs of different heavy machines perfectly.
Single-acting telescopic hydraulic cylinders have two key features: one-way power output and automatic retraction. These two things help simplify your equipment’s hydraulic circuit layout, cut down on the number of hydraulic parts, and lower overall failure rates and maintenance costs.
You can tweak every single parameter and configuration to match your exact needs. For materials, high-strength alloy steel works great for heavy-load jobs. Stainless steel is the go-to for corrosive environments. Lightweight aluminum alloy is perfect if you need to reduce your equipment’s overall weight. For seals, we have options that handle all sorts of tough conditions — from -40°C to 80°C, dusty mining sites, even strong acid-base chemical areas.
Core parameters are fully customizable too. You can pick 3 to 10 telescopic stages, set the stroke anywhere from 50mm to 5000mm, and choose from flange, hinge shaft or thread mounting interfaces. If you need ultra-high pressure operation, we can bump up the cylinder’s pressure resistance to 50MPa by thickening the cylinder walls and optimizing the sealing structure. That way, it handles the most extreme working requirements of special machinery. Companies like HCIC have loads of experience customizing these hydraulic cylinders, so every product fits the client’s needs perfectly.
We keep a range of mainstream standardized models as reliable references for customization. The key specs and parameters of four typical models are listed below:
Model Nominal Stage OD Number of Stages Stroke Closed Length Open Length Pin Diameter Width
| Model | NOMINAL STAGE OD | NUMBER STAGES | STROKE(A) | CLOSED(B) | OPEN(C) | PIN(D) | WIDTH(E) | ||||||||||
| S64DB-12-135 | 6 | 4 | 135 | 47.19 | 182.19 | 1.75 | 8 | ||||||||||
| S73DC-66-110 | 7 | 3 | 110.63 | 50.06 | 160.69 | 2 | 8.25 | ||||||||||
| S85DC-66-170 | 8 | 5 | 170 | 49.88 | 219.88 | 2 | 9.5 | ||||||||||
| S84DC-40-170 | 8 | 4 | 170 | 57.25 | 227.25 | 2 | 9.5 | ||||||||||
These standardized models cover a nominal stage OD range of 6 to 8, with 3 to 5 telescopic stages and a stroke from 110.63 to 170. The closed and open lengths have clear graded differences, and we’ve adjusted the pin diameter and width parameters specifically for each model. You can use these basic parameters as a starting point and ask for specific customizations — like extending the stroke to 300mm, switching to 316 stainless steel, or moving the hinge shaft mounting interface position. Our professional team responds quickly and finalizes the optimized solution.
If you’re using conventional small or medium-sized construction machinery — like agricultural loaders or small dump trucks — you can pick standardized models such as S64DB-12-135 or S73DC-66-110 directly. These models are in stock, so we deliver fast, and they’re a perfect match for medium-stroke and compact-installation jobs.
If you have large mining machinery, special engineering vehicles or customized special-purpose equipment, we offer an exclusive customization process. It has four key steps. First, you provide detailed data — like your equipment’s working condition parameters, 3D installation space drawings, and performance index requirements. Second, our technical team designs the solution, calculates parameters and does finite element analysis to make sure the product meets your working needs. Third, we make a sample, then run bench tests and on-site installation tests to check reliability. Fourth, once the product passes your tests and acceptance checks, we start mass production. We also provide full technical support and after-sales guarantees throughout the process. This dual-mode selection model meets regular clients’ efficient procurement needs and solves non-standard adaptation problems for clients with special needs.
To ensure customized products are stable in quality, we follow strict process standards throughout production. We use precision honing on cylinder barrels, keeping surface roughness within Ra0.2μm — that effectively extends seal service life. Piston rods go through high-frequency quenching and chrome plating, so their hardness hits over HRC58, making them way more resistant to wear and corrosion.
All assembly work is done in dust-free workshops to stop impurities getting into the hydraulic system and causing failures. Every finished product has to pass multiple tests — including pressure resistance tests, telescopic fatigue tests and high-low temperature environment tests. Only products with a 100% qualification rate leave the factory. On top of that, all products come with a 1 year warranty, and our after-sales team responds 24/7. We take care of all your post-purchase worries.
HCIC is a professional hydraulic manufacturer, mainly engaged in hydraulic system design, manufacture, installation, transformation, commissioning and hydraulic components brand sales and technical services.We hope that our product can help to save your cost and improve your quality. For More details please email us "davidsong@mail.huachen.cc" or google search "HCIC hydraulic"
