CNC Gear Hobbing Monel from VT machining delivers precision Monel parts produced to your exact drawing. Gear hobbing generates gear teeth with a rotating hob synchronized to the workpiece, and we tune every parameter to the behaviour of Monel, which is strong, highly corrosion resistant in marine/acid service.
Process Data for CNC Gear Hobbing Monel
| Heat-treat route | As specified on drawing |
|---|---|
| Accuracy as cut | ISO 1328 class 8-9 (AGMA 9-10) |
| Module range | 0.3-6 |
| Hobbing speed (HSS-E / carbide) | 10 / 35 m/min |
| Hob | Carbide hob, wet |
| Gear types | External spur and helical, splines, worm wheels |
Shown for Monel 400, the most common Monel grade we see for CNC Gear Hobbing. Typical values for Monel 400, Annealed; confirmed on the first part.
CNC Gear Hobbing Capability for Monel
- Spur & helical gears
- Module range support
- Pre-grind accuracy
- High productivity
Monel Material Data
| Density | 8.80 g/cm³ |
|---|---|
| Tensile strength | 550–690 MPa |
| Yield strength (0.2%) | 240–345 MPa |
| Hardness | 110–150 HB |
| Melting point | 1300–1350 °C |
| Thermal conductivity | 21.8 W/m·K |
| Thermal expansion | 13.9 ×10⁻⁶/K |
| Electrical conductivity | 3.4% |
| Machinability (C36000 = 100%) | 30% |
| Grades we run | Monel 400, Monel K-500, Monel R-405 (free-machining) |
Published typical values for Monel 400. Other grades in the family differ — the certificate supplied with your order carries the actual heat-lot figures.
Work-hardens like stainless but tougher. If the drawing allows R-405, cycle time drops noticeably for the same corrosion performance.
How CNC Gear Hobbing Monel Works
Tooth profiles are generated in the Monel blank by a synchronised cutter, then refined to the required accuracy class. Module, pressure angle and helix are programmed from your gear data.
Programming is driven directly by your 3D model or print. Work-holding, tool selection and the cutting strategy are planned around the critical features and the material before the first chip is cut. First-off inspection confirms the process is centred before production continues.
Achievable Tolerances for CNC Gear Hobbing Monel
| Feature | Standard | Precision |
|---|---|---|
| Accuracy class | DIN 8 / AGMA 10 | DIN 6 / AGMA 12 |
| Profile deviation | 0.020 mm | 0.008 mm |
| Lead deviation | 0.020 mm | 0.008 mm |
| Pitch deviation (cumulative) | 0.040 mm | 0.015 mm |
| Runout | 0.030 mm | 0.010 mm |
| Tooth surface finish | Ra 1.6 µm | Ra 0.4 µm (ground) |
| Module range | m0.5–m8 | m1–m6 |
Standard is what a normal quotation assumes. Precision is available on nominated features and is priced separately, because it needs extra setups, in-process gauging and CMM verification. Call out only the features that need it — blanket-tightening a drawing is the single most common reason a quote comes back expensive.
Design Tips for CNC Gear Hobbing Monel
We are happy to suggest design tweaks that improve manufacturability. Providing complete gear data (module, pressure angle, profile shift, quality class) lets us produce Monel gears right the first time. If you send your model early, we will return practical DFM feedback before you commit to production.
CNC Gear Hobbing Tolerances & Surface Finish
Gear features are produced to a specified DIN/AGMA accuracy class, with profile and lead controlled for quiet, durable running under load.
Exact achievable figures depend on the alloy, the feature size and the part geometry. Tell us which dimensions are critical and we will advise feasibility up front.
Working with Monel
As a material, Monel is strong, highly corrosion resistant in marine/acid service. Our setup reflects the alloy's machinability so the finished part is accurate and free of avoidable defects.
We verify the exact grade and condition before machining, and traceable mill certs are available on request. We can work to your nominated material source or specification when required.
Applications of CNC Gear Hobbing Monel
Customers order CNC Gear Hobbing Monel components for everything from instrumentation to structural and functional assemblies. Whether you need a single prototype or recurring production volume, the same process discipline applies.
Typical Monel Parts for CNC Gear Hobbing
Illustrative examples of CNC Gear Hobbing Monel parts and the callouts that usually drive the process plan. They show the kind of work that fits this process; they are not specific customer orders.
Internal ring gear
- Material
- Monel
- Size
- m2.5, z72, ID 190 mm
- Key callouts
- DIN 8, pitch deviation 0.03 mm
- Batch
- 150 pcs
Shaped rather than hobbed — an internal gear leaves no room for a hob to run out.
Worm and wheel set
- Material
- Monel
- Size
- m3, single start
- Key callouts
- Backlash 0.05–0.10 mm as a matched pair
- Batch
- 120 sets
Supplied as matched sets and marked, because mixing pairs loses the backlash spec.
Splined shaft
- Material
- Monel
- Size
- DIN 5480, 26 × 1.5
- Key callouts
- Fit class H7/g6, runout 0.02 mm
- Batch
- 800 pcs
Spline hobbed with the journals ground afterwards on the same centres.
Finishing Options for Monel
| Finish | Thickness / effect | Why it gets specified |
|---|---|---|
| Deburr / edge break | 0.05–0.3 mm | All parts unless the drawing says otherwise |
| Bead blast | Ra 1.6–3.2 µm | Uniform matt finish, hides tool marks |
| Laser marking | — | Part number, lot code, data matrix |
No drawing yet? Build one in the browser.
Set the metal, dimensions and features, watch the 3D model update as you type, then switch to the 2D sheet to add dimensions and tolerances. Download it or send it straight to us with your RFQ.
What We Need to Quote CNC Gear Hobbing Monel
- GeometrySTEP or IGES for the 3D model, plus a PDF drawing if you have tolerance callouts. A dimensioned sketch is enough to start.
- MaterialThe exact Monel grade and condition — temper, heat-treat state or hardness. If you are not sure, tell us the function and we will suggest one.
- QuantityPrototype count and the expected annual volume. Both change how the part is made and therefore what it costs.
- TolerancesWhich features are critical. Everything else runs to our standard tolerance, which is what keeps the price sensible.
- FinishSurface treatment, cosmetic requirements, and any faces that must be masked.
- DocumentsWhether you need a material certificate, dimensional report, FAIR or PPAP with the shipment.
Missing something from the list is not a problem — send what you have. We will come back with the specific questions rather than a generic form.
Other Metals for CNC Gear Hobbing
Other Processes for Monel
Send the drawing, the Monel grade and the quantity. You get pricing, lead time and any DFM notes back — usually within one business day.
Request a QuoteFrequently Asked Questions
How clean are the edges produced by CNC Gear Hobbing on Monel?
Machined Monel edges are clean and to specification; edge-break or deburring is added when your drawing calls for it.
Why is Monel a good choice for CNC Gear Hobbing?
Monel is strong, highly corrosion resistant in marine/acid service, which makes it well suited to CNC Gear Hobbing. We tune the process to the alloy so the finished Monel gear cutting part meets your dimensional and functional requirements.
What surface finish is achievable on Monel with CNC Gear Hobbing?
Surface finish on Monel is controlled to your specification; we confirm the achievable Ra against your callout.
Which industries use CNC Gear Hobbing Monel parts?
CNC Gear Hobbing Monel parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise Monel components are required.
Does CNC Gear Hobbing Monel require dedicated tooling?
Most Monel gear cutting work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.