OEM Forklift Hydraulic Cylinder — Double-Acting Two-Way

OEM Forklift Hydraulic Cylinder — Double-Acting Two-Way

OEM double-acting forklift hydraulic cylinder for mast and attachment bi-directional actuation. Two-way design with balanced bore/rod ratio for equal extend/retract force. Replaces Cascade, Bolzoni, and major OEM double-acting units.

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Description

Double-Acting Forklift Hydraulic Cylinder — Two-Way Actuation

A two-way (double-acting) forklift hydraulic cylinder applies hydraulic force in both extension and retraction directions — it does not rely on gravity or spring return for the reverse stroke. This makes it mandatory for functions where the cylinder must push and pull against mechanical resistance in both directions: tilt cylinders, attachment actuators, reach mast cylinders, and fork positioner cylinders all require double-acting operation. This OEM-specification cylinder is produced with a close-tolerance bore and rod, balanced seal package, and port configuration that matches the hydraulic circuit requirements of the original machine design.

OEM double-acting forklift hydraulic cylinder

Specifications

Parameter Value Notes
Type Double-acting Two ports, bi-directional hydraulic force
Application Tilt, attachment, reach, multi-function Any application requiring powered retraction
Force Balance Specify bore and rod for required extend/retract ratio Optimised per application
Ports Two ports — extend and retract sides Port location to match OEM circuit
Construction Welded body or tie-rod Specify per OEM original design
Rod Hard chrome, heavy build High-contamination environments
OEM Match Dimensional match to original equipment spec First-article approval process
Double-acting cylinder two-port configuration detail

When to Specify Double-Acting vs. Single-Acting

⬆️⬇️
Tilt Function

Always double-acting — the cylinder must push forward and pull back against the weight and inertia of the loaded mast.

↔️
Sideshift

Always double-acting — neither gravity nor spring can reliably return the carriage against a loaded pallet.

📦
Push-Pull Attachments

Always double-acting — pull stroke engages the slip sheet; push stroke ejects the load onto the rack or vehicle.

⬆️
Lift Function

Typically single-acting — gravity lowers the load when the valve opens. Double-acting lift is used only in special high-speed lowering applications.

OEM Supply and Documentation

For OEM equipment manufacturers requiring a qualified cylinder supplier, we provide full production documentation: dimensional inspection report, material certificate, pressure test certificate per batch, and PPAP-level documents on request. Our Hangzhou facility operates under an ISO-aligned quality management system with production records retained for 5 years for traceability. Contact our OEM supply team to discuss qualification requirements and annual volume pricing.

To request pricing for the double-acting forklift cylinder, custom specifications, or an OEM supply assessment, contact Hangzhou Ever-Power Hydraulic Cylinder Co., Ltd. at +86-571-88220653 or [email protected]. Our address is Shenhua Road, Hangzhou. Use the contact form for a response within one business day.

Frequently Asked Questions

1. What is the difference between OEM and aftermarket forklift cylinders? +
OEM cylinders are produced by or to the specification of the original equipment manufacturer and carry the machine brand’s part number. Aftermarket cylinders are produced by independent manufacturers to match OEM dimensions and performance — often at lower cost with comparable quality. The key requirement for aftermarket cylinders is dimensional accuracy and pressure testing to the OEM specification.
2. Can a double-acting cylinder replace a single-acting cylinder in a lift function? +
Technically yes, if dimensions match and the hydraulic circuit is modified to use both ports. However, doing so adds complexity, requires a circuit change, and removes the inherent gravity-return safety feature of the single-acting design. This substitution is not recommended unless specifically required by a design change.
3. How do I specify the correct bore and rod combination for a double-acting cylinder? +
The extend force equals (bore area × pressure); the retract force equals ((bore area − rod area) × pressure). Specify the bore and rod combination that provides adequate force in the direction that is load-bearing. For tilt cylinders where retraction pushes the mast forward under load, the retract (annulus) force must meet the specified tilting force requirement at system pressure.
4. What is the lead time for OEM-specification double-acting cylinders? +
Standard OEM-specification cylinders with pre-approved drawings ship within 10–20 working days. New OEM part numbers requiring first-article approval take 20–35 working days for the initial order. Repeat orders against approved drawings ship within the standard lead time.
5. Do you provide cylinders pre-filled with hydraulic fluid? +
Cylinders are shipped dry (without hydraulic oil). Filling is done during installation into the machine’s hydraulic circuit. Pre-filling is available on request for large-volume OEM supply programs where cylinders are installed on the production line without a separate filling step.

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