Single & Double Acting Hydraulic Cylinders
DALLAST designs and manufactures custom single-acting and double-acting hydraulic cylinders for heavy-duty industrial, agricultural, construction, and mobile equipment. Whether your application requires cost-effective one-way power with external load return, or high-precision bidirectional control under continuous duty, we deliver cylinders engineered to your exact operational requirements, mounting configurations, and working pressures.
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![Single Acting Hydraulic Cylinder]()
Single Acting Hydraulic CylinderSingle acting hydraulic cylinder only have one oil inlet port to either extend or retract the hydraulic cylinder. In principle, single-acting cylinders have only one effective piston area. Once fullread more -
![Double Acting Hydraulic Cylinder]()
Double Acting Hydraulic CylinderDouble acting hydraulic cylinder having an oil inlet port at both side of the piston seal that allows a double acting hydraulic cylinder to be extended and retracted.read more -
![Hydraulic Pull Ram]()
Hydraulic Pull RamMaterial: 27simn with Quenching and tempering ; material with high tensile strength and high yield strength.read more -
![Hydraulic Pull Back Ram]()
Hydraulic Pull Back RamDALLAST offers Hydraulic Push Pull Cylinder. We can provide custom made hydraulic cylinder service.read more -
![Hydraulic Push Pull Cylinder]()
Hydraulic Push Pull CylinderDALLAST offers Hydraulic Push Pull Cylinder. We can provide custom made hydraulic cylinder service.read more -
![Cushion Design Hydraulic Cylinder]()
Cushion Design Hydraulic CylinderThe Double Acting Cylinder with Cushioning has a large mass or a large load and a high moving speed (> 12m / s), it has a large momentum due to a large inertial force.read more -
![Dual Action Hydraulic Cylinder]()
Dual Action Hydraulic CylinderDALLAST is a dual acting hydraulic cylinder supplier based on design, development and manufacturing. Its products focus on dual acting hydraulic cylinder for dump trucksread more -
![Single Acting Hydraulic Ram]()
Single Acting Hydraulic RamThe single acting hydraulic ram is only moved in one direction due to the movement by the hydraulic oil. When returning, relying on its own weight or external force such as a spring, the singleread more -
![Single Hydraulic Cylinder]()
Single Hydraulic Cylinder● Heavy single acting hydraulic cylinder flipper -landfill truck tipper. ● Logistics, transportation and loading of coal, sand, ore, grain and other materials. ● Single acting hydraulic cylinderread more -
![Two Stage Single Acting Hydraulic Cylinder]()
Two Stage Single Acting Hydraulic CylinderDo the pre-treatment including pickling, phosphating and saponification, and then cold-draw the seamless steel tubes.read more -
![Single Acting Hydraulic Jack]()
Single Acting Hydraulic JackWe using advanced production equipment, uses high-quality 27simn quenched and tempered seamless steel tubes, and uses low temperature and high temperature resistant sealing rings.read more -
![Single Acting Ram]()
Single Acting RamThe single acting ram landfill truck tipper is a machine that helps workers to load and unload. It can raise the upper side of the truck to a prescribed height, and can quickly unload the truck.read more
Choose Hydraulic Cylinder Type
Single Acting Hydraulic Cylinders
Double Acting Hydraulic Cylinders
Single Acting vs. Double Acting Hydraulic Cylinders: Quick Comparison
| Design Feature | Single Acting Cylinders | Double Acting Cylinders |
| Hydraulic Ports | 1 (Single fluid line) | 2 (Alternating fluid lines) |
| Powered Direction | One direction (Extension or Pull) | Bidirectional (Extension + Retraction) |
| Return Mechanism | Gravity, external load weight, or spring | Direct hydraulic pressure |
| Circuit Complexity | Simplified piping, basic control valves | Dual plumbing, directional 4-way valves |
| Motion Control | Fixed speed return; basic extension control | High precision on both extension & retraction |
| System Cost | Lower initial cost; simpler pump circuit | Higher circuit cost; maximal operational versatility |
| Primary Suitability | Vertical lifting, tipping, static clamping | Continuous pushing, pulling, steering, digging |
Engineered for Demanding Industry Applications
Our single and double-acting cylinders are engineered to withstand shock loads, aggressive weather, high pressure, and abrasive contamination across diverse industries.
Construction & Earthmoving Equipment
Heavy-duty double-acting cylinders for excavator arms, wheel loader buckets, backhoes, and stabilizer outriggers.
Agricultural Machinery & Implements
Single and double-acting cylinders designed for tractors, harvesters, plows, planters, and farm trailers.
Dump Trucks, Tippers & Trailers
Single-acting telescopic and ram cylinders engineered for heavy load lifting, body tipping, and rapid gravity lowering.
Material Handling & Lifting Systems
Single-acting ram cylinders for scissor lifts, freight elevators, and dual-acting steering/tilt cylinders for industrial forklifts.
Industrial Presses & Manufacturing Machinery
Precision double-acting cylinders featuring internal cushion systems for high-tonnage stamping presses, die-casting, and baling equipment.
Waste Management & Municipal Vehicles
Corrosion-resistant double-acting cylinders for refuse compactors, hook loaders, sweepers, and municipal maintenance trucks.
Custom Hydraulic Cylinder Manufacturing Specifications
All cylinders are designed to customer CAD drawings, operating conditions, and mechanical constraints.
| Specification Parameter | Customization Range / Options |
| Action Type | Single Acting (Gravity / Spring / Load Return) | Double Acting |
| Structure Type | Welded, Tie-Rod, Telescopic Multi-Stage, Ram Style, Mill-Duty |
| Bore Diameter | Custom engineered (Built to project specifications) |
| Rod Diameter | Custom engineered (Calculated based on buckling and load limits) |
| Stroke Length | Custom (Up to application limits) |
| Working Pressure | Standard (16–21 MPa) | High Pressure (up to 35 MPa / 5000 PSI) | Custom |
| Mounting Types | Clevis, Cross-Tube, Trunnion, Front/Rear Flange, Spherical Eye, Foot Mount |
| Port Standards | SAE O-Ring Boss, NPT/NPTF, BSPP (G-thread), Metric, Custom Manifold |
| Rod Material | 40Cr, 42CrMo, AISI 1045, 20MnV6, 304/316 Stainless Steel |
| Rod Plating / Finish | Hard Chrome (20–50 µm), Induction Hardened, Nickel-Chrome, QPQ Nitriding |
| Tube Finish | Cold drawn seamless steel, honed / skived & roller burnished ($Ra \le 0.4\,\mu\text{m}$) |
| Sealing Packages | Hallite, Parker, Merkel, SKF, or custom PU/PTFE/NBR kits suited to fluid & temperature |
| Cushioning Options | Non-cushioned, Single-end cushion, Adjustable double-end cushion |
| Operating Temp | Standard (-20°C to +80°C) | Low-temp (-45°C) | High-temp (+120°C) |
How to Select the Right Cylinder for Your Application
Final Solution
Stroke & Retracted/Extended Length
Measure the complete mechanical envelope and confirm clear pin-to-pin clearances to prevent binding.
Force & Pressure Balance
Adopting advanced technology and concepts of the industrial internet, it helps manufacturing enterprises create a unified digital system covering the entire process of production and management.
Industrial Big Data
For long strokes, verify piston rod diameter and stroke length ratios against operating system pressures.
Mounting Mechanics
Rigid mounts (flanges) vs. pivoting mounts (clevis/cross-tube) determine how side loads are managed.
Fluid Medium & Cycle Speed
High cycling speeds require integrated deceleration cushions and low-friction PTFE-based piston seals.
Operating Environment
External marine, abrasive, or agricultural dust environments demand induction-hardened rods with multi-stage wiper seals and anti-corrosion surface treatments.
Precision Manufacturing & Quality Verification
We maintain strict quality control protocols across raw material procurement, machining, welding, and full-load assembly.
Engineering Review:FEA load simulation, buckling calculation, and 2D/3D CAD validation prior to metal cutting.
Precision Tube & Rod Processing: Deep-hole boring, skiving, and precision honing to achieve bore roughness under $0.4\,\mu\text{m}$; centerless grinding and hard chrome plating on rods.
Automated & Certified Welding:Full-penetration automatic longitudinal and circumferential welding inspected to project standards.
Proof Pressure Test:** Cycled up to 1.5× working pressure to ensure structural integrity.
Internal & External Leakage Test:Monitored over holding intervals under sustained pressure.
Full Stroke & Friction Verification:Smooth actuation test verifying cushioning damping and seal resistance.
Dimensional & Coating Inspection:Ultrasonic thickness check, surface roughness measurement, and Salt Spray Testing (ASTM B117).
Request a Custom Hydraulic Cylinder Quotation
Please share your available parameters:
Basic Specs
Bore diameter, rod diameter, stroke length, and retracted length (pin-to-pin).
System Pressure
Rated working pressure and peak relief pressure.
Action Required
Single-acting (specify gravity or spring return) or double-acting.
Mounting & Ports
Mounting style (clevis, cross tube, flange, etc.) and port threads (SAE, NPT, BSP).
Project Documents
Please attach existing 2D/3D drawings, equipment photos, or current sample references.
Submit Cylinder Specifications
FAQ
Q: What is the primary operational difference between single-acting and double-acting hydraulic cylinders?
A: Single-acting cylinders use hydraulic fluid pressure to move the piston in one direction only, relying on an external load, gravity, or a spring to retract the rod. Double-acting cylinders deliver hydraulic fluid through two separate ports to generate controlled power in both extension and retraction directions.
Q: When is a single-acting cylinder the preferred engineering choice?
A: Single-acting cylinders are ideal when motion is needed primarily in one direction and the load naturally forces the cylinder back, such as dump truck hoist beds, material lifting platforms, and static jacks. They offer lower initial cylinder costs, simpler valving, and halved fluid plumbing lines.
Q: What information is needed for a custom liquid cold plate quote?
A: Please provide a 2D or 3D drawing, heat load, heat source locations, coolant, inlet temperature, available flow rate, allowable pressure drop, working pressure, port requirements and expected quantity. If some information is unavailable, send the data you already have and our team will identify the missing inputs.
Q: When is a double-acting cylinder mandatory?
A: Double-acting cylinders are required when an application demands repeatable force, positive positioning, and controlled speed in both push and pull movements (such as excavator arms, industrial presses, and steering gears), or where gravity cannot assist cylinder retraction.
Q: Can you produce cylinders based on existing drawings or physical samples?
A: Yes. Our engineering team can manufacture directly from your STEP, DWG, or PDF drawings. We also offer reverse-engineering services for aftermarket replacements—you can ship a sample or share critical dimensions for technical verification.
Q: What is your standard lead time for custom prototype and production runs?
A:Prototype design verification and sample production typically take 3 to 4 weeks depending on raw material sourcing. Batch production orders are generally fulfilled within 4 to 6 weeks, with full MTR (Mill Test Reports) and pressure inspection reports provided upon shipment.
Shenzhen Dallast Technology Co., Ltd. is one of the most professional single and double acting cylinder manufacturers and suppliers in China, specialized in providing high quality customized products with competitive price. We warmly welcome you to buy cheap single and double acting cylinder for sale here from our factory. Also, discount information is available.