Gear manufacturing
Hobbing, shaping and broaching under the same roof as the turning and milling that come before them — and the measurement that comes after.
- Ø260 mm
- Module 6
- 2 six-axis CNC hobbing centres
- 3 Fellows shaping machines
At a glance
- 2 six-axis CNC gear hobbing centres; largest workpiece Ø260 mm, module 6
- Three Lorenz universal hobbing and Fellows shaping machines for internal and shouldered gears
- Broaching for keyways, internal splines and non-round profiles
- Gear blanks turned in-house — no external blank supply chain
- Hardness and dimensions measured in our own laboratory; gear accuracy measured with the CMM gear module and a contour measuring device
Why one roof matters
Most contract machining shops do not cut gears, and most gear shops have no 5-axis milling. We turn, mill, hob, deburr and measure under one roof, with heat treatment in our approved supplier chain. That removes the two usual delays for geared parts: sourcing blanks and waiting for inspection.
Processes
Hobbing — external spur and helical gears and splines; 6-axis CNC, hob head swivels ±45°.
Gear shaping (Fellows) — internal gears, gears close to a shoulder and cluster gears.
Broaching — keyways, internal splines and non-round profiles; one pass, repeatable.
Detailed comparison: hobbing or shaping?
Our gear machines
-
SMG SH-260
CNC gear hobbing centre, 6-axis · 2023
- Control
- Siemens 810 DL
- Working envelope / capacity
- Workpiece to Ø260 mm · module 6 · X, Y, Z, A, C, B (300 × 200 × 300 mm · ±45° · 360° · 360°)
-
S&T Dynamics GHO-200
CNC gear hobbing centre, 6-axis · 2012
- Control
- Siemens 810 DL
- Working envelope / capacity
- X, Y, Z, A, C, B (300 × 200 × 300 mm · ±45° · 360° · 360°)
-
Lorenz Universal gear hobbing and shaping (Fellows)
Universal gear hobbing and shaping (Fellows) · 1975
-
Kestaş Broaching machine
Broaching machine · 2018
Machines
Show specificationsHide specifications
| Machine | Year | Control | Working envelope / capacity | Qty |
|---|---|---|---|---|
| SMG SH-260CNC gear hobbing centre, 6-axis2023 · Siemens 810 DL · Workpiece to Ø260 mm · module 6 · X, Y, Z, A, C, B (300 × 200 × 300 mm · ±45° · 360° · 360°) | 2023 | Siemens 810 DL | Workpiece to Ø260 mm · module 6 · X, Y, Z, A, C, B (300 × 200 × 300 mm · ±45° · 360° · 360°) | 1 |
| S&T Dynamics GHO-200CNC gear hobbing centre, 6-axis2012 · Siemens 810 DL · X, Y, Z, A, C, B (300 × 200 × 300 mm · ±45° · 360° · 360°) | 2012 | Siemens 810 DL | X, Y, Z, A, C, B (300 × 200 × 300 mm · ±45° · 360° · 360°) | 1 |
| Kestaş Broaching machineBroaching machine2018 | 2018 | — | — | 1 |
| Lorenz Universal gear hobbing and shaping (Fellows)Universal gear hobbing and shaping (Fellows)1975 · 3 units | 1975 | — | — | 3 |
Machine list revision: 5 September 2025
What we make
- Spur gears
- helical gears
- splined shafts
- internal gears
- sprockets
- gear blanks
- power transmission components
What we need to quote
Sending these values with the drawing usually turns a two-week quotation into a two-day one:
- Module or diametral pitch
- Number of teeth
- Pressure angle and helix angle
- Face width
- Quality grade (DIN 3962 / ISO 1328 / AGMA)
- Material and heat treatment
- Quantity
Heat treatment and inspection
Case hardening and vacuum nitriding are carried out by approved suppliers under our quality system (special processes). On return, parts are checked in our own laboratory: hardness on a KB Prüftechnik automatic tester, case depth, dimensional recovery on the CMM and gear accuracy with the CMM gear module and a contour measuring device.
Frequently asked questions
What is the largest gear you can cut?
Ø260 mm outside diameter and module 6 on the SMG SH-260 CNC hobbing centre.
Can you cut internal gears?
Yes, by shaping on our Lorenz universal hobbing and Fellows shaping machines. Send the drawing and we confirm the size range for your part.
Do you supply the gear blanks or do we?
We turn our own blanks. Sending the finished-part drawing is enough.
Do you measure gear accuracy?
Hardness and dimensions are measured in our own laboratory, including on the CMM. Gear accuracy is measured with the gear module of our CMM and a contour measuring device, and reported with the parts.
What gear quality grade can you achieve?
The achievable grade depends on module, material and heat treatment route. Grades are specified to European (DIN 3962, ISO 1328) or American (AGMA 2015) standards, as the drawing requires.
Summary
- Gear hobbing to Ø260 mm and module 6 on 2 six-axis CNC centres (SMG SH-260, S&T Dynamics GHO-200).
- Fellows shaping for internal and shouldered gears; broaching for keyways and splines.
- Gear blanks turned in-house, removing the external blank supply chain.
- Heat treatment through approved suppliers, inspected on return in our own laboratory.
- Hardness and dimensional results issued with the parts; gear accuracy reports.
Last updated:
Related pages
- Technical guides
Gear hobbing vs gear shaping
External vs internal teeth, shoulder clearance, productivity — and where broaching fits.
- Capabilities
CNC turning
8 turning centres with C/Y axis and twin spindles, parts to Ø670 × 1,512 mm.
- Industries we manufacture for
Energy and power transmission
Switchgear, transmission and turbine parts for energy OEMs.
Send us your drawing.
STEP, IGES, DXF or PDF. Quotation within 2–15 business days, depending on size and complexity.