What is a CNC Machining Company?
A CNC machining company uses Computer Numerical Control technology — pre-programmed computer software that controls the movement of machine tools and cutting equipment to shape raw material into finished components. Rather than relying on a skilled machinist to manually operate a lathe or milling machine by hand, a CNC machine follows precise digital instructions to produce parts automatically, consistently and with exceptional accuracy.
The term "CNC" describes the method of control, not a single machine type. A good CNC machining company applies this technology across a wide variety of processes including turning, milling, grinding, drilling and slotting. What unites them is the use of computer-generated code — typically G-code — to direct the movement of the cutting tool relative to the workpiece, controlling speed, feed rate, depth of cut and tool path to within fractions of a millimetre.
If you've typed CNC machining near me into a search engine, it's because finding a local, reliable precision engineering company in Manchester matters — shorter lead times, easier site visits, and a supplier who understands the local industrial landscape. Elmax Engineering Ltd, based in North Reddish, Stockport, is exactly that — a long-established CNC machining company just minutes from Manchester city centre.
At Elmax Engineering Ltd, we have been delivering expert CNC machining services since 2003. Our modern facility houses a range of CNC turning and milling centres, cylindrical grinding equipment and slotting machines, enabling us to produce precision machined components across a wide variety of materials and industries.
How a CNC Machining Company Works
Understanding how CNC machining works helps explain why it has become the dominant manufacturing method for precision components. The process begins with a component design — typically a detailed engineering drawing or a 3D CAD (Computer-Aided Design) model. This design defines the dimensions, tolerances, surface finishes and material requirements for the finished part.
The CAD model is then imported into CAM (Computer-Aided Manufacturing) software, where a skilled programmer defines the machining strategy — selecting cutting tools, specifying tool paths, setting speeds and feeds, and establishing the sequence of operations required to produce the component. The CAM software generates the G-code, a set of numerical instructions that the CNC machine follows during machining.
Once the program is loaded onto the machine, the raw material — typically a bar, billet or blank of the chosen metal or plastic — is set up in the machine and clamped securely. The CNC controller executes the program, directing the machine's axes to move the cutting tool along the programmed path whilst the spindle rotates the tool (in milling) or the workpiece (in turning) at the correct speed. Coolant is applied to manage heat at the cutting zone and clear swarf from the work area.
The key advantage of CNC machining in Manchester is repeatability. Once a program has been proven on the first component, every subsequent part produced from the same program will be identical — whether you need 10 components or 10,000. This consistency, combined with the ability to hold very tight dimensional tolerances, makes CNC machining the process of choice for precision components in demanding industries.
Design & Drawing
The process starts with a detailed engineering drawing or CAD model defining all dimensions, tolerances and material requirements. Customers can supply drawings in any format — PDF, DXF, DWG, STEP or IGES — or provide a sample component for reverse engineering.
CNC Programming
Our experienced programmers use CAM software to generate the machining program. Tool selection, cutting speeds, feed rates and tool paths are all optimised to produce the component efficiently, achieving the required tolerances and surface finish in the minimum number of operations.
Material & Setup
The correct raw material is sourced and prepared. The workpiece is set up in the machine and clamped securely using appropriate workholding — chucks, collets, vices or custom fixtures. Correct setup is critical: any movement or vibration during machining will affect dimensional accuracy and surface finish.
Machining
The CNC machine executes the program, removing material progressively to produce the finished component. Roughing operations remove the bulk of the material quickly; finishing passes achieve the final dimensions and surface finish. For complex components, multiple setups or operations may be required.
Inspection & Despatch
Every component is inspected before leaving our facility using calibrated measuring equipment — micrometers, bore gauges, dial indicators and surface roughness testers. Parts that meet specification are cleaned, protected and despatched to the customer on the agreed date.
What CNC Machines Are Used in Precision Machining?
CNC machining encompasses a family of different machine types, each suited to particular operations and component geometries. Here is an overview of the key CNC machines used in CNC machining in Manchester and at our Stockport facility:
CNC Turning Centres (CNC Lathes)
The CNC lathe — or turning centre — is the workhorse of precision CNC machining, and forms the basis of our CNC turning services. The workpiece rotates at high speed in a chuck while a stationary cutting tool is fed along and across the work to remove material. CNC turning produces cylindrical geometries: shafts, pins, bushes, flanges, stepped profiles, grooves and threads. Modern CNC turning centres feature live tooling — driven milling cutters and drills mounted in the turret — enabling milling and drilling operations to be performed without removing the part from the lathe. This "turn-mill" capability significantly reduces the number of setups required for complex components.
CNC Machining Centres (CNC Mills)
The CNC machining centre holds the workpiece stationary on a table while a rotating spindle drives the cutting tool — an end mill, face mill, drill or tap — across the surface as part of our CNC milling service. The machine moves in three or more axes (X, Y and Z as standard) to machine flat surfaces, pockets, slots, bores, bolt hole patterns and complex contoured profiles. Vertical machining centres (VMCs) have the spindle oriented vertically and are the most common type; horizontal machining centres (HMCs) are preferred for heavy cuts on larger components. 4-axis and 5-axis machining centres add rotary axes that allow complex features to be machined on multiple faces in a single setup.
CNC Cylindrical Grinding Machines
Where CNC turning and milling achieve tolerances of ±0.01mm to ±0.025mm, cylindrical grinding goes further — routinely achieving tolerances of ±0.005mm or better on diameters and lengths. The grinding wheel — a precision-formed abrasive disc — removes tiny amounts of material from the workpiece surface, producing surface finishes and dimensional accuracy unattainable by conventional cutting. CNC cylindrical grinding is used for bearing journals, hydraulic shafts, precision bores and any component where a fine surface finish and very tight dimensional tolerance is critical. It is also the preferred method for finishing hardened steel components where conventional cutting tools struggle.
CNC Slotting Machines
Keyway slotting machines use a reciprocating cutting action to produce internal and external keyways, slots and splines that cannot be achieved by milling or turning. The cutting tool moves in a linear up-and-down motion to remove material incrementally from the workpiece. Internal keyways — cut into a bore to accept a key that drives a shaft — are the most common application. Slotting is essential for producing drive components, gear hubs, pulleys and sprockets. CNC control allows the depth, width and position of slots to be held to precise tolerances repeatedly across a production batch.
CNC Drilling & Boring Machines
While most drilling and boring operations are performed on CNC turning and milling centres, dedicated CNC drilling and boring machines are used for large components or high-volume hole production. Boring — the enlarging and refinishing of an existing hole — achieves accurate diameter, roundness and position using a single-point boring bar. CNC boring is used where tight positional tolerances or precise diameter fits are required, such as housing bores for bearings or hydraulic cylinders.
CNC Multi-Axis Machining Centres
4-axis and 5-axis CNC machining centres extend the capability of standard 3-axis machines by adding rotary axes to the workpiece table or spindle head. This enables complex components with features on multiple faces — compound angles, helical forms and undercuts — to be machined in a single setup, eliminating the alignment errors and time associated with repositioning. 5-axis machining is widely used in aerospace, medical and motorsport applications where component complexity and tight tolerances combine. For precision engineering in Manchester, multi-axis capability opens the door to components that simply cannot be produced by conventional 3-axis methods.
Why Choose Elmax Engineering as Your CNC Machining Company?
If you've been searching for a CNC machining company or typing CNC machining near me into Google, here's why Elmax Engineering Ltd should be on your shortlist. Founded in 2003, we have spent over two decades building a reputation for quality, reliability and flexibility that keeps our customers coming back. Here is what sets us apart:
Whether you need a single prototype, a small batch of specialist components or a long production run, our team will work with you to understand your requirements and deliver parts that meet your specification and deadline. As a complete CNC machining company, we also offer cylindrical grinding services and keyway slotting in-house. We serve a wide range of industries including food processing, medical, automotive, construction and general engineering — and we're always happy to discuss new enquiries.
Frequently Asked Questions — CNC Machining Company
CNC stands for Computer Numerical Control. It refers to the use of pre-programmed computer software to control the movement of machine tools — lathes, milling machines, grinders and more — automatically. CNC replaced manual machining for most precision work because it delivers far greater accuracy, consistency and repeatability than even the most skilled manual machinist.
As a CNC machining company based at Unit 7, Kenwood Road, North Reddish, Stockport SK5 6PH, we're just minutes from Manchester city centre. We regularly serve customers across Greater Manchester, Cheshire and Lancashire, so if you're searching CNC machining near me from anywhere in the North West, we very likely cover your area — get in touch to confirm.
CNC machining is used to manufacture precision components from metal, plastic and other materials for virtually every industry. Common applications include shafts, bushes, flanges, housings, brackets, gears, threaded components, valve bodies, bearing housings, tooling, fixtures and bespoke engineering parts. In Manchester, CNC machining is used extensively in food processing, automotive, construction, medical, oil and gas, and general engineering sectors.
CNC turning rotates the workpiece while a stationary cutting tool removes material — producing cylindrical parts such as shafts, bushes and flanges. CNC milling moves a rotating cutting tool across a stationary workpiece — producing flat faces, pockets, slots, bolt patterns and complex profiles. Many components require both processes: turned for their cylindrical features, then milled for flats, slots or holes. At Elmax Engineering we offer both CNC turning services and CNC milling service in-house.
CNC turning and milling routinely achieve tolerances of ±0.01mm to ±0.025mm. Cylindrical grinding can achieve ±0.005mm or tighter. The achievable tolerance depends on the material, component geometry, feature size and the process used. Our team will advise on what is realistic for your specific component when providing a quotation.
A wide range of materials can be CNC machined. At Elmax Engineering we regularly machine mild steel, stainless steel (grades 303, 304 and 316), aluminium alloys, brass, copper, tool steels, hardened steels and engineering plastics including Nylon, PEEK, Acetal and PTFE. The choice of material depends on the application — mechanical strength, corrosion resistance, temperature, weight and cost all play a role. Our team can advise on material selection for your specific requirements. For more detail, see our precision engineering materials guide.
Getting a quote from Elmax Engineering is simple. Send your drawings, CAD files (STEP, PDF, DXF) or a sample part to Cameron@elmax-engineeringltd.uk, or use our contact form. Include the material, quantity and required delivery date. We'll review your enquiry and respond promptly with a competitive quote. You can also call us directly on 0161 432 8840.
Yes, absolutely. We regularly produce single one-off prototype components as well as small batches and full production runs. CNC machining is well suited to prototypes because the programming investment is the same regardless of quantity — and once the program is proven, scaling up to production is straightforward. We work closely with customers through the prototype stage to refine designs before committing to production tooling.
Lead time depends on the complexity of the component, quantity required, material availability and our current workload. Simple turned components in common materials can often be delivered within a few days. Complex components requiring multiple operations, specialist materials or tight tolerances will take longer. We will always give you a realistic lead time at the quoting stage and work hard to meet agreed delivery dates. If you have an urgent requirement, contact us to discuss what is possible.
CNC cylindrical grinding uses a precision abrasive wheel to remove very small amounts of material from a component's surface, achieving surface finishes and tolerances that are beyond the capability of turning. Grinding is used when very tight diameter tolerances (±0.005mm or better) or very fine surface finishes (Ra 0.4µm or better) are required. It is also the standard finishing method for hardened steel components where conventional cutting tools cannot achieve the required accuracy. Common applications include bearing journals, precision shafts, hydraulic components and gauging equipment.
Elmax Engineering Ltd is based at Unit 7, Kenwood Road, North Reddish, Stockport SK5 6PH — just minutes from Manchester city centre. We serve customers across the whole of Greater Manchester including Manchester, Stockport, Salford, Oldham, Bolton, Wigan, Rochdale and Trafford, as well as Cheshire and Lancashire. We have been providing CNC machining services to Manchester businesses for over 20 years and are proud to be a trusted local engineering supplier.
Need CNC Machining in Manchester?
Get in touch with Elmax Engineering Ltd for a fast, competitive quote. Based in Stockport, serving Manchester and the North West since 2003. CNC turning, milling, grinding and slotting all under one roof.