Custom Fabricated Steel Housings for Gearboxes & Heavy Machinery

Yile Machinery is a premier manufacturer of large, custom fabricated steel housings, machine bases, and structural frames. We specialize in creating complex weldments for heavy-duty applications, providing a complete, single-source solution from raw plate cutting and welding to final precision machining.

Our fabricated structures serve as a robust and cost-effective alternative to large iron or steel castings, offering greater design flexibility and shorter lead times, especially for custom or low-volume projects.

Why Choose a Fabricated Housing?

While castings are suitable for many applications, fabricated steel housings offer distinct advantages for large and complex equipment:

• Ultimate Design Freedom: Fabrication is not limited by the constraints of casting patterns, allowing for more intricate designs, internal reinforcements, and optimized structures.

• No Pattern Costs or Lead Times: Eliminates the significant expense and time required to produce new casting patterns, making it ideal for prototypes, one-off projects, and small production runs.

• Guaranteed Internal Soundness: Welded plate construction avoids the potential for internal casting defects like porosity or shrinkage, resulting in a solid, predictable structure.

• Material Versatility: Allows for the use of various steel grades and thicknesses within a single assembly to optimize strength and weight.

Our Comprehensive Manufacturing Process: From Plate to Precision

We manage every critical step in-house to ensure absolute control over quality and dimensional accuracy.

1. CNC Plate Cutting & Forming

• We begin with high-quality steel plates, cut to precise dimensions using CNC plasma and laser cutting systems. Plates can be bent and formed as required by the design.

2. Expert Fabrication & Welding

• Our certified welders assemble the components using advanced welding processes like GMAW (MIG) and SAW (Submerged Arc Welding) to ensure deep penetration and exceptional weld strength.

3. Post-Weld Heat Treatment (Stress Relieving)

• This is a critical step. Every large fabrication undergoes a controlled heat treatment cycle in our large furnaces to relieve all internal stresses induced during welding. This prevents distortion during subsequent machining and ensures long-term dimensional stability.

4. Large-Scale Precision Machining

• After stress relieving, the fabrication is moved to our machine shop. Using large CNC boring mills, gantry mills, and floor mills, we machine all critical features, including:

• Bearing bores and seats

• Mounting faces and pads

• Access ports and inspection covers

5. Rigorous Quality Inspection

• We perform Non-Destructive Testing (NDT) on critical welds and use Coordinate Measuring Machines (CMM) and laser trackers to verify that all final dimensions are within the tight tolerances specified on the engineering drawings.

Applications for Our Heavy Fabrications

We build the structural backbone for a wide range of industrial machinery:

• Large Industrial Gearbox and Drive Housings

• Mechanical and Hydraulic Press Frames

• Machine Tool Bases and Beds

• Wind Turbine Main Frames and Bedplates

• Large Diesel and Gas Engine Blocks

• Pump and Compressor Skids

Request a Quote for Your Fabrication Project

Submit your technical drawings and specifications to our team. We will provide a comprehensive quote for a fully machined, ready-to-assemble fabrication for your next project.