CNC turning you can rely on

Yes. A turned part is defined by its diameters, lengths, tapers and threads, and every one of those can be measured off a worn sample and rebuilt into a model. We take the dimensions from the part, work out the true form it held before it wore, and turn the replacement in the same steel, stainless steel, aluminium or brass. This is the heart of reverse engineering for turned shaft machining, and it means an obsolete shaft, bush or spindle with no paperwork is a starting point, not a dead end. Where the original wore at a bearing seat or a thread, we correct that surface in the model before cutting, so the CNC turned component comes out better than the original.

A turned part runs true when every feature is cut about one axis in as few setups as possible. We hold the part on a single datum and programme the diameters, faces, grooves and threads so they stay concentric to each other, typically within around 0.02mm on the running diameters, because a shaft that is round on its own can still run out once it is fitted. Turning is the right process for exactly this: the part spins around one axis while a fixed tool cuts, so concentricity is built into the method. We prove the first article against the model before the batch runs, so a precision turning job holds from the first part to the last. Send us the part and we will confirm the setup.

An engineer prices your CNC turning job within 24 hours, and it is a real engineer who reviews it, not an automated estimate. Our engineers review the part, the material and grade, the diameters and threads, the finish and the volume, because all of those drive the cost of turned work far more than the length of the part does. A shaft with fine threads, tight concentricity or a demanding finish takes more planning than a plain bush, and the quote reflects that honestly. If another process suits the part better, you get told straight. Send a drawing, a CAD file or the worn part itself, and subcontract CNC turning from Peterborough is priced inside a day.

We cut external and internal threads to ISO metric (M3, M6 and up), BSP, BSPT and UNF, and turn to a general tolerance of around 0.05mm with running diameters typically held tighter, around 0.02mm, on request. The thread standard matters because a turned fitting has to mate cleanly with the part it threads into, so we confirm the callout with you rather than assume it. We can turn from a drawing, from CAD in STEP, IGES or Parasolid, or straight from a worn sample where the thread and the diameters are measured off the part itself. Tell us the mating thread and the fit the part has to make, and we will confirm the specification before we cut.

We turn steel, stainless steel, aluminium, brass and engineering plastics, the families that cover most shafts, bushes, spindles, pins and threaded fittings. The right choice is rarely just about strength. Each material turns differently: free-cutting brass and aluminium clear their chips easily and take a fine finish, stainless steel work-hardens and needs a steady feed to avoid glazing the surface, and engineering plastics move with temperature and have to be held gently. The grade sets the finish you can hold and how the thread cuts. For that reason we confirm the material and grade with you before we quote, so the CNC turned components run true and last. If you need a material outside these families, ask us.

Both. We turn single replacement parts, such as one obsolete shaft or a discontinued bush, and we turn production batches where the same component is repeated across a run. A one-off is often a reverse engineering job: there is no drawing, so we model the true form from the sample, turn the part and, where the original was weak, make it better than the original. A batch is about consistency, so the diameters and threads are programmed once and every part comes off the same, with the first article proven before the run. One of our first orders was four frame units, which shows the work is sized to what you need rather than to a minimum quantity. Whether you need one turned part or a batch, the CNC turning is engineered the same way.