CNC Machining — Turning & Gear Cutting in Navsari, Gujarat

Precise mechanical power transmission is no coincidence; it is created through a highly specialised sequence of subtractive machining steps. That is what our CNC Turning & Gear Cutting Services deliver: cylindrical blanks that meet critical tolerances, followed by the complex tooth geometry that lets gears run flawlessly and efficiently – whether in automotive drivetrains, industrial gearboxes or precision robotics.

The load, mesh and tolerance requirements of your application are rarely standard, so an off-the-shelf gear seldom fits the bill. As an experienced CNC turning and gear cutting company, we make parts to your system's actual performance requirements, instead of forcing your design to fit parts that were never made for that performance.

Contact us now to discuss your CNC turning or gear cutting project and get a detailed, no-obligation quotation!

What Are CNC Turning and CNC Gear Cutting?

CNC turning and CNC gear cutting are two specialised subtractive manufacturing processes that, together, cover the entire route from raw material to finished gear. Turning creates the cylindrical form – the specific diameters, faces and profiles that give a part its basic shape. Gear cutting then adds the tooth profiles that allow smooth mechanical engagement and power transmission between meshing parts.

Traditionally they were treated as two manufacturing steps on two machines, but today they are usually combined on a single mill-turn machine that can carry out both turning and gear cutting in one setup. This reduces handling, improves concentricity between the turned diameter and the cut teeth, and shortens overall lead time without sacrificing the tight tolerances that gear applications require.

CNC Turning: The Foundation

In CNC turning, the raw material — typically a solid bar, tube, or casting — is clamped into a chuck and rotated at high speed while a single-point cutting tool moves linearly across it to peel away material. This process is the default choice for producing precise cylindrical, conical, or symmetrical profiles, and it forms the starting blank for nearly every gear-cutting operation that follows.

Core Mechanics

The primary movements on a basic lathe run on two axes: the Z-axis, which moves along the length of the part, and the X-axis, which moves toward or away from the centreline to control diameter. Together, these two axes give the cutting tool full control over the part's cylindrical geometry, from rough stock removal down to finished dimensions.

Common Turning Operations

• OD/ID Turning – Sizing the external or internal diameter of the workpiece to the required tolerance.

• Facing – Creating a perfectly flat end surface perpendicular to the rotational axis, which is essential for establishing accurate reference faces before further machining.

• Grooving & Threading – Cutting targeted recesses or screw-like profiles into the part, used for retaining rings, seals, or threaded connections.

• Taper Turning – Moving the tool at an angle relative to the centreline to create cone-shaped features, often used for shafts, fittings, and transitional profiles.

Each of these operations plays a role in preparing the blank for the next stage: producing a gear-ready cylindrical form with the exact outer diameter, face width, and reference surfaces the gear-cutting process depends on.

CNC Gear Cutting: Defining the Profile

Once the turned blank is at the correct outer diameter, gear cutting adds the tooth spacing, profile and geometry needed for smooth mechanical contact. Whereas turning relies on linear tool movement, gear cutting is a far more complex process that requires precise synchronisation between the rotation of the gear blank and the tool — and this synchronisation determines how cleanly, efficiently and reliably the gear performs over its service life.

There are several well-known methods of cutting gear teeth, each suited to different production quantities, gear types and part geometries.

Gear Hobbing

The hob is a thread-shaped helical cutter that meshes continuously with the rotating blank in synchronised motion, gradually generating the full tooth profile as the hob and the blank turn together. Because it cuts continuously, hobbing is efficient at large quantities and well suited to high-volume production of external spur and helical gears.

Gear Shaping

The shaping cutter has a gear-like profile; it rotates slowly against the gear blank while moving up and down in a reciprocating stroke, rather than simply turning. This makes gear shaping the preferred method for internal gears, splines and cluster gears, where a hob cannot reach the teeth without hitting the surrounding material, for example a cluster gear located close to a shoulder.

Power Skiving

Power skiving is a continuous process in which the cutting tool and the workpiece spin on crossed axes at high speed, combining the geometric flexibility of shaping with the speed of continuous cutting. It is especially suitable for high-volume internal and external gear production and can run 2 to 5 times faster than conventional shaping, a significant benefit for production runs in which cycle time directly affects cost.

Form Milling

A multi-edge form cutter, shaped to match the exact space between two teeth, cuts one tooth slot at a time. Form milling is slower overall, but it is well suited to low-volume, custom prototypes, where investing in a dedicated hob or shaping cutter is not cost-effective.

CNC Turning & Gear Cutting — Technical Process & Selection Guide

The Modern Workflow: Integrated Mill-Turn Centres

Traditional gear manufacture involved transferring a part from a lathe to a mechanical hobbing machine — requiring two setups, two handling steps and two chances of error between the turned diameter and the finished gear. Today, both operations can be completed in one process on sophisticated multi-axis CNC turning centres equipped with live tooling and sub-spindles.

Turning the Blank

The machine turns the metal cylinder down to the exact diameter required and finishes the face width, forming the accurate cylindrical foundation on which the gear teeth will be cut.

C-Axis Engagement

The C-axis locks or indexes the main spindle to control the rotational position of the workpiece precisely during gear-tooth generation, instead of letting it spin freely as it does in a normal turning operation.

Live Tool Machining

A live milling head or special attachment on the tool turret machines the gear teeth while the part stays in the same setup, avoiding the need to transfer it to a separate gear cutting machine.

Post-Processing

After the teeth are cut, the gear is usually heat treated to harden the surface further and improve wear resistance. CNC gear grinding is often used as the final step to correct the microscopic distortion caused by heat treatment and to bring the finished gear to the accuracy required for high-performance mechanical assemblies (less than 5 µm).

Why Integration Matters

Combining turning and gear cutting in a single operation is not only convenient; it also affects the quality and reliability of the finished part. Each time the part is removed from one machine and re-clamped on another, the concentricity can shift between the turned diameter and the gear teeth cut onto it, causing uneven tooth contact, noise and early wear in service. By keeping the part in one setup from raw stock to finished tooth profile, mill-turn centres eliminate this risk and reduce overall cycle time and handling costs.

Why Choose Our CNC Turning & Gear Cutting Services?

Precision-Engineered Foundations – Turned blanks produced to exact diameter, face, and taper tolerances before any gear-cutting operation begins.

Full Range of Gear-Cutting Methods – Hobbing, shaping, power skiving, and form milling, matched to your gear type and production volume.

Integrated Mill-Turn Capability – Turning and gear cutting completed within a single setup on multi-axis centres, improving concentricity and reducing lead time.

Volume-Flexible Production – From low-volume custom prototypes using form milling to high-volume hobbing and power skiving runs.

Post-Processing Precision – Heat treatment and CNC gear grinding available to correct distortion and hold tolerances under 5 µm.

Application Range – Experience across spur gears, helical gears, internal gears, splines, and cluster gears for a wide range of mechanical assemblies.

Industries We Serve

Our CNC turning and gear cutting capabilities support a wide range of industries, including:

• Automotive & Drivetrain Manufacturing

• Industrial Gearbox & Power Transmission Equipment

• Robotics & Precision Motion Systems

• Aerospace & Defence Components

• Heavy Machinery & Off-Highway Equipment

• Agricultural Equipment Manufacturing

• Renewable Energy (Wind Turbine Gearboxes)

• General Precision Machining & Prototyping

Our Fabrication Process

1. Requirement & Design Review – We assess your part geometry, gear type, load requirements, and production volume to determine the right turning and gear-cutting approach.

2. Blank Turning – The raw bar, tube, or casting is turned to precise diameter, face, and taper dimensions to form the gear-ready blank.

3. Gear-Cutting Method Selection – Hobbing, shaping, power skiving, or form milling is selected based on gear type, internal or external configuration, and production volume.

4. Gear Cutting – Tooth profiles are cut using synchronised tool and workpiece rotation, whether on a standalone gear-cutting machine or an integrated mill-turn centre.

5. Heat Treatment – Where required, gears undergo heat treatment to improve surface hardness and wear resistance.

6. Precision Grinding – A final CNC gear-grinding pass corrects any heat-treatment distortion, bringing tolerances down to under 5 µm where required.

7. Quality Inspection – Components are checked for dimensional accuracy, tooth profile, and concentricity before dispatch.

8. Packing & Delivery – Finished turned and gear-cut components are carefully packed and delivered according to your project timeline.

Request a CNC Turning & Gear Cutting Quote

Need precision-turned blanks, custom-cut gears, or fully integrated mill-turn production? Share your requirements with us, and our team will guide you through process selection, material choice, and production timelines.

Contact us today for reliable CNC turning and gear cutting services, engineered for real mechanical performance — not just dimensional accuracy.