Heavy Machine Bed Fabrication & Planer Milling
The machine bed is the absolute anchor of any heavy-duty machine tool. Whether it is supporting a 5-axis CNC gantry mill, a massive turning lathe, or a heavy stamping press, the bed must provide extreme rigidity, superior vibration dampening, and flawless dimensional stability over its entire lifespan.
At Openex, we act as the premier contract manufacturing partner for global OEMs. We fabricate, stress-relieve, and precision-machine massive steel weldment machine beds weighing up to 250 tons. Our facility is equipped with some of the largest CNC gantry mills in the world, allowing us to machine linear guide rail mounting surfaces to exceptionally tight tolerances over spans of 20+ meters.
Machine Bed Manufacturing Specifications
We custom manufacture heavy machine beds to your exact blueprints, replacing traditional cast iron beds with stronger, customized heavy steel weldments.
| Max Bed Dimensions | Up to 25,000 mm (L) x 6,000 mm (W) x 5,000 mm (H) |
|---|---|
| Max Weight Capacity | Up to 250 Tons |
| Materials Used | Heavy Carbon Steel Plates (A36, Q235, Q345, S355), Alloy Steels. |
| Critical Machining | Planer milling for linear guideways, bearing journals, and T-slots. Extreme parallelism and flatness over long distances. |
| Quality & Metrology | Laser Tracker alignment, Large-scale CMM Inspection, 100% UT on critical full-penetration welds. |
Our Work: Machine Beds & Bases
How We Guarantee Dimensional Stability
A machine bed is only as good as its stability. If a bed warps after machining, the entire CNC machine is compromised. Here is our strict manufacturing protocol to prevent deformation:
Using heavy carbon steel plates, we construct the bed with complex internal ribbing to dampen vibrations. Our AWS-certified welders use Submerged Arc Welding (SAW) to lay massive, defect-free full-penetration welds.
The intense heat of structural welding traps massive stresses inside the steel. Before any machining takes place, the entire machine bed is placed into our giant on-site annealing furnace. This post-weld heat treatment (PWHT) permanently sets the metal, ensuring it will never warp during its operational life.
Once stress-relieved, the bed is moved to our heavy gantry CNC milling centers. We perform highly precise planer milling to cut the mounting pads, T-slots, and linear guide rail surfaces, achieving absolute flatness and parallelism across massive spans.