Large Part Machining Services

Steel Rolling Mill Shaft

A large, precision-ground forged steel work roll, a critical component for a steel rolling mill, resting on supports.

Track Roller

A heavy-duty steel conveyor track roller with integrated sealed bearings, designed for a material handling system.

Steel Rolling Mill Shaft Under Machining

A massive forged steel work roll for a steel rolling mill being precision-turned on a heavy-duty CNC lathe in our manufacturing facility.

Cement Plant Shaft

A large, forged steel support roller shaft for a cement plant rotary kiln, precision-machined and ready for assembly with the roller.

Large Motor Shaft

A large motor shaft being precision-turned on a heavy-duty CNC lathe in a modern manufacturing workshop.

16-Meter-Long Precision-Finished Part

A 16-meter long, precision-finished steel rotor shaft being inspected in a manufacturing facility, showcasing its smooth, polished surface ready for final assembly.

Rough-Machined Part With 1.5M Diameter And 10M Length

A massive 10-meter long, 1.5-meter diameter forged steel shaft undergoing rough machining on a heavy-duty CNC lathe in a factory setting.

Hydroelectric Power Plant Component

The massive rotor of a hydroelectric generator being installed inside a power station powerhouse.

Large Part Machining Services provide specialized manufacturing solutions for components that are too big or heavy for standard machine tools. This field is critical for industries such as energy (power generation, oil & gas), aerospace, defense, mining, and heavy industrial equipment, where components can weigh several tons and measure many meters in length or diameter. Our services blend massive machine capacity with micron-level precision.

The mechanical machining process for large metal parts is a multi-stage, carefully managed workflow:

  1. Preparation and Rough Machining: The process typically begins with a large raw workpiece, such as a forging, casting, or thick plate of steel, stainless steel, or aluminum. The first step is rough machining, where excess material is removed efficiently. This is often performed on powerful CNC horizontal boring mills (HBMs) or vertical turning lathes (VTLs) to quickly bring the part closer to its final shape and relieve internal stresses from the raw material.

  2. Semi-Finishing and Feature Machining: Once the bulk of the material is removed, the part is transferred for more precise operations. Our large-capacity CNC machines, including 5-axis gantry mills and floor-type boring mills, are used to machine complex features. This includes milling large flat surfaces, boring precise holes and internal diameters, and creating intricate contours. For large cylindrical parts like shafts or rings, our VTLs perform precision turning, facing, and grooving operations.

  3. Finishing and Quality Assurance: The final stage focuses on achieving the exact tolerances and surface finishes specified in the design. This may involve precision grinding, honing, or finish milling. Throughout the entire process, quality control is paramount. We utilize large-scale metrology equipment, such as laser trackers and large-envelope Coordinate Measuring Machines (CMMs), to verify dimensional accuracy at every critical step, ensuring the final part meets all engineering requirements.

Ultimately, our expertise in Large Part Machining Services lies in our ability to handle immense scale without compromising on the precision that modern industries demand.

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