Die casting produces a near-net-shape component with excellent dimensional characteristics. But "near-net-shape" is not always close enough. When a component needs to interface with a precision bearing, seal against a machined mating face, or accept a threaded fastener in a precisely located boss, the casting dimension is a starting point—not a finished state.
Plasma Aluminium Diecasting operates an in-house CNC machining and finishing capability at our Pune facility, handling all post-cast precision processing for our die cast components. This covers turning, milling, drilling, boring, tapping and precision surface finishing—applied to HPDC, GDC and LPDC components before they are packed and dispatched to the client.
By keeping machining in-house, we maintain complete quality control across the full component journey and eliminate the timeline and quality risks that arise when machining is outsourced.
We turn cylindrical and axi-symmetric features on aluminium die cast components, achieving bore diameters, outer diameters and shoulder lengths to tight tolerances. Turning is the primary operation for bearing seats, sealing diameters and stepped-shaft profiles on pump and motor housings.
Multi-axis milling handles complex planar and contoured surfaces, pocket machining, face milling for flatness and profile milling for intricate external forms. We use milling routinely to achieve the flatness and surface roughness requirements on gasket and mating surfaces.
Drilled holes, reamed precision holes and bored internal diameters are produced to drawing-specified tolerances. Close-tolerance bores for bearing and bushing locations, precision-drilled fluid passages in hydraulic components.
We cut internal and external threads using both tapping and thread milling. For aluminium die cast housings that require metric, UNC, UNF, or BSP threads, we provide consistent thread form and pitch throughout production.
Post-machining deburring and edge treatment are applied to all components before inspection. Where drawing-specified surface roughness (Ra) values are required, we achieve and verify these using appropriate cutting parameters.
When machining is outsourced to a third party, several things happen:
By keeping machining in-house at Plasma, we close these loops. Our casting and machining teams share process data, inspect at each stage and jointly own the dimensional quality of the final component.
Our CNC machining capability is equipped to achieve the tolerance classes required by automotive, aerospace and precision industrial applications:
Our CNC machining operations are optimised for aluminium alloys used in die casting:
CNC machining at Plasma is fully integrated with our casting and finishing operations:
Our CNC machining and finishing services are available to manufacturers across Pune, Chakan MIDC, Moshi MIDC and Chimbli—either as part of our complete die casting and finishing package, or as standalone machining services for die cast components produced elsewhere. If you are looking for precision CNC machining of aluminium die cast components in Pune, our team is ready to review your drawings and provide a quotation.