Forklift Truck Lift Oil Cylinder — 56mm Bore 750mm Stroke

Forklift truck lift oil cylinder with 56mm bore, 45mm rod, 750mm stroke, 984mm installation distance. Single-acting design for inner mast vertical travel. OEM replacement for standard and heavy-capacity forklift lift stages.

Description

Forklift Truck Lift Oil Cylinder — Mast Lifting Stage

The lift oil cylinder drives the inner mast’s vertical travel in counterbalance and reach forklift applications. This model features a 56mm bore, 45mm rod, 750mm stroke, and 984mm pin-to-pin installation distance — a specification covering mid-capacity forklift applications in the 2-tonne to 3.5-tonne payload range. The 750mm stroke provides the full inner mast travel required in duplex and triplex mast assemblies for standard rack height clearance in 4.0m to 6.0m racking configurations. As a single-acting hydraulic cylinder, the unit extends under hydraulic pressure and descends under the weight of the mast, carriage, and load when the lowering control is operated.

Forklift truck lift oil cylinder

Technical Specifications

Parameter Value Notes
Cylinder Diameter 56 mm Bore ID
Rod Diameter 45 mm Hard chrome plated rod
Travel (Stroke) 750 mm Inner mast full travel
Installation Distance 984 mm Pin-to-pin retracted length
Type Single-acting Gravity-return lowering
Application Forklift mast lifting Duplex and triplex mast configurations
Fluid ISO VG 46 / VG 68 Mineral hydraulic oil
56mm bore cylinder cross-sectionRod and gland assembly detail

Mast Stage Application Context

In a duplex mast, two or three lift cylinders operate in parallel to raise the inner mast section. In a triplex mast, a first-stage cylinder provides the initial free-lift travel; second and third stage cylinders extend sequentially for maximum lift height. The 56mm bore and 750mm stroke of this cylinder position it as a main lift stage unit in duplex configurations or a second-stage cylinder in triplex assemblies for machines in the 2–3.5 tonne capacity range.

Lift cylinder installed in duplex mast assembly

Performance Highlights

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750mm Full Travel

Covers the inner mast travel range for standard 4.0m to 6.0m racking clearance heights.

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45mm Rod Stability

Near-full-bore rod diameter provides excellent column strength and minimises deflection at full extension.

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Static Load Hold

Pressure-tested to confirm zero bypass at 1.5× working pressure in the static hold condition.

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OEM Cross-Reference

Available to match lift cylinder specifications for major forklift brands in the 2–3.5 tonne class.

To request pricing for the forklift truck lift oil 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.

What our customers say

Verified buyer

★★★★★

“The welded-body forklift tilt cylinders held zero internal bypass on our first pressure test. After three months of two-shift warehouse use, not a single seal replacement — that durability speaks for itself.”


Mark T.

Fleet Maintenance Manager · UK

Verified buyer

★★★★★

“We sourced 40 single-acting lift cylinders for our reach truck fleet. The bore finish was verified at Ra 0.6 µm with our own profilometer. Installation was drop-in on every unit — no shimming, no modification.”


Petra V.

Procurement Lead · Netherlands

Verified buyer

★★★★☆

“Custom steering cylinders arrived on day 12 — ahead of the quoted window. Pressure test certificates were included without being requested. We’re now placing our next order for the harvesting machinery cylinder series.”


Lin Wei

Supply Chain Engineer · Australia

 

Frequently Asked Questions

1. What racking heights does a 750mm stroke lift cylinder cover? +
In a duplex mast, 750mm inner mast stroke corresponds to approximately 1,500mm of carriage travel (due to the pulley ratio), giving a typical lift height of 3.0m–4.5m depending on the initial carriage floor height. In a triplex mast as a second-stage cylinder, the combined stroke of all stages determines the maximum lift height.
2. Can I use a longer stroke cylinder to increase lift height? +
Only if the mast structure can accommodate the longer cylinder. Cylinder stroke is designed to match the mast’s inner section travel distance — installing a longer cylinder without matching mast modifications will cause the cylinder to bottom out before the mast reaches its designed maximum height. Consult the mast manufacturer’s drawings before substituting a longer stroke cylinder.
3. What is the difference between a 56mm bore and a 63mm bore lift cylinder for the same application? +
The larger bore cylinder develops more lifting force at the same working pressure, which is appropriate for higher-capacity machines or machines that frequently lift near their rated capacity. The smaller bore has a smaller hydraulic volume per unit stroke, allowing slightly faster lift speed for the same hydraulic flow. Select bore size based on the force requirement at your system’s working pressure.
4. Why does my forklift extend more slowly at full lift height than at lower heights? +
Lift speed decreases at the top of stroke if the hydraulic system is pressure-limited. At high lift heights, the backpressure from the raised mast weight and load approaches the hydraulic system’s maximum pressure, leaving less pressure differential to drive flow through the control valve orifice. This is normal behaviour and can be addressed by increasing system relief valve pressure (within the cylinder’s rated pressure) or reducing load at maximum height.
5. How do I prevent hydraulic oil contamination from affecting my lift cylinder seals? +
Install a return-line filter rated at 10 microns or better, monitor filter differential pressure to detect blockage, change hydraulic fluid at the OEM-recommended interval, and ensure the reservoir breather filter is serviceable. When installing a new cylinder, flush the hydraulic lines before connecting to remove installation debris.