CNC Machined Components Manufacturer — Custom Precision Machining to Drawing

CNC machined components are metal parts cut to shape on computer-controlled machine tools — turning centres, machining centres and turn-mill machines — that follow a programmed path from the part drawing. The result is a part made to exact dimensions and tolerances, repeatable from one piece to thousands. We machine entirely to the customer’s drawing or sample, so there is no fixed range — if it can be drawn, we can machine it.

Yes — this is the core of what we do. Send a 2D drawing, a 3D model (STEP/IGES) or even a physical sample, and we machine the component to those exact dimensions and tolerances. There is no standard catalogue; every job is made to the customer’s specification, whether it is a single prototype, an obsolete spare that is no longer available, or a repeat production batch.

Our machine list is led by some of the most capable CNC machines in the world today — among the top two to three CNC models currently in existence — backed by multi-axis CNC turning centres, vertical and horizontal machining centres (VMC / HMC), CNC turn-mill (mill-turn) centres and vertical turning lathes (VTL) for large diameters. This mix lets us turn, mill, drill, bore, thread and gear-cut in one controlled workflow and hold tight, repeatable tolerances on everything from small precision parts to large heavy components.

A broad range — shafts and spindles, gears and split ring gears, housings and manifold blocks, bushes and sleeves, rollers, flanged hubs, valve spools and cartridges, couplings, and bespoke profiled parts. Because everything is made to drawing, the list is open-ended; these are simply examples of the work that comes through the shop.

The full range we carry: stainless steel (304/304L, 316/316L, 321, 347, 904L), duplex and super duplex (2205, 2507), alloy and chrome-moly steel (A182 F5/F11/F22/F91, EN8/EN19/EN24, 4140), carbon steel (A105, mild steel), LTCS (A350 LF2), Monel 400/K500, Inconel 600/625/718, Hastelloy C276/C22, titanium Grade 2/5, and copper-nickel 90/10 and 70/30. Brass, bronze and aluminium are machined on request. The grade is chosen to suit the component’s service.

Tolerances depend on the feature and material, but precision turned and milled features are routinely held to a few microns to a few hundredths of a millimetre, with fine surface finishes and tight concentricity and roundness on critical diameters. We work to the tolerances called out on your drawing and confirm them by inspection before despatch — tell us the critical dimensions and we will advise what is achievable.

Both. We make single prototypes and obsolete spare parts as readily as repeat production batches. Because the parts are programmed from your drawing, a one-off and a batch follow the same controlled process, so a single trial piece can be scaled to volume without changing the result.

CNC turning, CNC milling (3-, 4- and 5-axis), turn-mill machining, drilling and boring, internal and external threading, gear cutting and hobbing, slotting and keyway cutting, and grinding for fine finishes. Multi-axis turn-mill machines let many of these operations be done in a single set-up, which improves accuracy and shortens lead time.

Send the drawing or 3D model with the material grade, quantity and any critical tolerances or surface-finish requirements. We review it for manufacturability, suggest any improvements that save cost without affecting function, and return a quote. On approval we can supply a first-article sample for sign-off before running the full batch.

Yes. Components are checked dimensionally against the drawing, with critical features verified on precision instruments, and material is confirmed by mill test certificate (EN 10204 Type 3.1) and PMI / XRF on request. Tesco Steel & Engineering is an ISO 9001:2015 certified manufacturer and exporter from Mumbai, India.

Yes. Our vertical turning lathes and large machining centres handle big-diameter and heavy parts such as large gears, ring gears and housings, while the turning and turn-mill centres cover small and medium precision work. We confirm the size envelope once we see the part drawing.

Either way. We can machine from material you free-issue, or supply the bar, forging, casting or plate ourselves from certified stock in the required grade and machine the finished component — a single-source route that keeps full traceability from raw material to finished, inspected part.