Fixed-beam Gantry Machining Center

Gree GA-GF4028

A fixed-beam gantry with a monolithic cast-iron structure, a 3,700 mm X-axis stroke and 550 mm Y travel — engineered heavy-duty for large-format aerospace, energy and mold components that bridge-type and VMC frames cannot reliably hold.

X 3,700 mm stroke Monolithic cast iron Fixed-beam gantry Heavy-duty Gree CNC

Key Specifications

Machine typeFixed-beam Gantry Machining Center
X-axis travel3,700 mm (long-stroke)
Y-axis travel550 mm
StructureMonolithic cast iron (fixed beam)
DutyHeavy-duty, large-format
ControlGree CNC control system (partnered control chain)
FamilyLong-stroke gantry (GF2755 → GF4028)

GA-GF4028 is the longer-stroke sibling of GA-GF2755; exact Z-travel, spindle power and table load are confirmed with sales per application.

Why GA-GF4028

3.7 m X stroke

Holds very long parts — wing skins, long beams, large mold bases — in a single clamping.

Monolithic cast iron

One-piece fixed beam delivers the rigidity needed for heavy cuts on large workpieces.

Heavy-duty duty

Built for aggressive material removal on steel and alloy large-format components.

Stable long-axis geometry

Fixed-beam design keeps accuracy across the full 3.7 m travel better than moving-column layouts.

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Frequently Asked Questions

Fixed-beam vs moving-column gantry — which is better?
A fixed-beam (moving-table) layout keeps the spindle axis geometry constant over the full stroke, so it generally holds accuracy better on very long parts than a moving-column design.
Which parts suit a 3.7 m gantry?
Wing skins and aerostructures, long beams, large mold bases, wind-energy and energy-equipment components — anything too big or stiff for a standard VMC.
How does it relate to GA-GF2755?
GA-GF4028 is the longer-stroke sibling of GA-GF2755 (2.7 m X), extending the long-axis gantry family to 3.7 m for larger workpieces.
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