- IS09001 2015
Gear Cutting and Manufacturing
CNC Spur and Helical Gear Manufacture
High-Precision Spur and Helical Gear Production
At NTG, we specialise in the manufacture of CNC spur gears and helical gears, supported by a modern CNC gear hobbing facility. With the capability to produce spur, helical, crowned, and tapered gears up to 1200mm in diameter, 500mm face width, and 20Mod, we offer one of the UK’s most comprehensive facilities for gear manufacturing.
Using a combination of advanced CNC machines, specialised cutters, and rigorous quality control, we produce high-quality gears that meet the stringent standards demanded by aerospace, automotive, power generation, and heavy industry.
The CNC Gear Manufacturing Workflow
The typical manufacturing process begins with the production of a gear blank, usually created through forging or casting, depending on application and size. The chosen method for gear cutting—whether gear shaping, gear hobbing, or gear machining—depends on the type of gear, level of precision, and production volume required.
Throughout the workflow:
- Specialised cutters are applied in gear shaping and generation to achieve the desired tooth profile.
- CNC machining ensures accuracy, repeatability, and efficient cycle times.
- Quality control checks are carried out at each stage to validate geometry, tolerances, and surface finish.
- Process optimisation helps reduce lead times and costs while maintaining consistent quality.
This approach ensures the delivery of reliable, high-performance gears capable of meeting demanding operating conditions.
Internal Gear Manufacture
Alongside spur and helical gears, we also offer extensive capabilities for internal gear manufacture. Our internal
ding and hobbing services allow us to produce gears up to 800mm in diameter, 180mm face width, and 7Mod, ensuring dimensional accuracy and excellent performance in gearboxes and precision assemblies.
Spline Hobbing
We provide spline hobbing up to 250mm diameter and 1000mm long (longer in certain cases). Splines are critical for power transmission and torque transfer, and our advanced CNC spline hobbing process ensures precise geometry and durability.
Worm Milling
Our worm milling capabilities cover up to 150mm in diameter and 750mm in length, delivering accurate worm gears for applications requiring smooth, efficient power transmission.
Bevel Gear Manufacture
What Are Bevel Gears?
Bevel gears are a specialised gear type with a conical shape, allowing them to transmit power between intersecting shafts, most commonly at 90°. This unique geometry makes bevel gears essential for applications that require a change in the direction of rotational motion.
The Bevel Gear Manufacturing Process
Producing bevel gears requires greater precision than spur or helical gears due to their complex conical geometry. The workflow typically includes:
- Design – using CAD software and simulation tools to calculate tooth count, shaft angle, and performance requirements.
- Gear cutting – shaping teeth with specialised cutters to achieve the precise conical profile.
- Gear grinding – for high-speed or high-precision applications, grinding ensures exceptional surface finish and accuracy.
- Quality control – tooth geometry, surface finish, and dimensions are checked at every stage.
Materials Used in Bevel Gears
- High-strength steel for durability and wear resistance
- Cast iron for cost-effective production
- Powder metallurgy for specialised applications with unique material properties
Applications of Bevel Gears
Bevel gears are commonly found in:
- Gearboxes and transmissions
- Differentials in automotive systems
- Aerospace power transmission systems
- Heavy industrial machinery
Their versatility, strength, and ability to handle high speeds make bevel gears indispensable in modern engineering.
Advantages of CNC Spur, Helical, and Bevel Gear Manufacture
- High accuracy – tight tolerances achieved through CNC machining and grinding
- Versatility – ability to produce spur, helical, crowned, tapered, spline, worm, and bevel gears
- Large capacity – handling gears up to 1200mm in diameter
- Advanced materials – from steels and alloys to specialised powders
- Consistent quality – inspections integrated at every stage
- Efficiency – reduced lead times with optimised CNC processes
- Industry compliance – gears manufactured to AGMA, ISO, and DIN standards
Get Started with NTG Gear Manufacturing
If you require CNC spur gears, helical gears, or bevel gears, NTG is your trusted manufacturing partner. With decades of expertise, advanced CNC machines, and proven results across multiple industries, we deliver gears that meet the highest standards of precision, performance, and durability.
Contact us today to discuss your requirements and request a tailored quote.
Frequently Asked Questions
It is the process of producing spur gears with straight teeth using CNC gear hobbing and shaping equipment. Spur gears are the simplest gear type and are ideal for applications requiring efficient torque transfer between parallel shafts.
Helical gears have angled teeth that provide smoother, quieter operation compared to spur gears. Using CNC machining and hobbing, we produce helical gears for automotive, aerospace, and industrial systems where efficiency and noise reduction are critical.
Spur gears have straight teeth and are efficient for parallel shafts, while helical gears have angled teeth, offering smoother meshing, reduced noise, and higher load capacity.
Bevel gears are produced using specialised gear cutting machines, form cutting for conical profiles, and grinding for high-precision requirements. CNC machining ensures accuracy throughout the process.
CNC gear manufacturing supports automotive, aerospace, energy, rail, marine, and heavy industrial sectors that require gears for gearboxes, turbines, and high-performance machinery.
Gear hobbing is a machining process that uses a rotating hob cutter to progressively cut teeth into a gear blank. It is one of the most efficient methods for producing spur, helical, and spline gears.
Spline hobbing is used to manufacture splined shafts that transfer torque between components. Our CNC spline hobbing service ensures precise alignment and durability.
Worm milling produces worm gears, which are used to transmit motion at right angles with high reduction ratios. They are common in power transmission and mechanical drives.
CNC machines provide automation, repeatability, and precision, ensuring every gear meets specifications consistently, regardless of volume.
Yes, NTG manufactures spur, helical, and bevel gears up to 1200mm in diameter, making it possible to produce gears for heavy industry and power generation applications.