CNC Gear Cutting Molybdenum from VT machining delivers precision Molybdenum parts produced to your exact drawing. CNC gear cutting forms precise tooth profiles for spur, helical, bevel and worm gears, and we tune every parameter to the behaviour of Molybdenum, which is very high melting point and thermal stability.
CNC Gear Cutting Capability for Molybdenum
- Multiple gear types
- Profile accuracy class
- Custom modules
- Hardened-blank ready
Molybdenum Material Data
| Density | 10.22 g/cm³ |
|---|---|
| Tensile strength | 550–900 MPa |
| Yield strength (0.2%) | 480 MPa |
| Hardness | 200–250 HV |
| Melting point | 2623 °C |
| Thermal conductivity | 138 W/m·K |
| Thermal expansion | 4.8 ×10⁻⁶/K |
| Electrical conductivity | 34% |
| Machinability (C36000 = 100%) | 30% |
| Grades we run | Pure Mo (99.95%), TZM, Mo-La, MoCu |
Published typical values for Pure Mo / TZM. Other grades in the family differ — the certificate supplied with your order carries the actual heat-lot figures.
Below its ductile-to-brittle transition it chips rather than cuts. Sharp corners get a radius, and thin sections are wire-EDM cut instead of milled.
How CNC Gear Cutting Molybdenum Works
Tooth profiles are generated in the Molybdenum blank by a synchronised cutter, then refined to the required accuracy class. Module, pressure angle and helix are programmed from your gear data.
We start from your supplied geometry and tolerance scheme. The setup is designed to minimise re-clamping, which protects positional accuracy across features. A first article is verified against the drawing before the balance of the batch is released.
Achievable Tolerances for CNC Gear Cutting Molybdenum
| 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 Cutting Molybdenum
Small design adjustments often cut cost and lead time. Providing complete gear data (module, pressure angle, profile shift, quality class) lets us produce Molybdenum gears right the first time. If you send your model early, we will return practical DFM feedback before you commit to production.
CNC Gear Cutting 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.
The tightest tolerances are reserved for the features your drawing flags as critical. Share your tolerance scheme and we will confirm what is realistic before quoting.
Secondary Operations & Finishing
Most Molybdenum parts need some finishing, which we manage in-house or through vetted partners. Options include deburring and edge-breaking, heat treatment, surface grinding, polishing, and plating or anodising for corrosion resistance and appearance. Give us the finished-part requirement and we will sequence every operation correctly.
CNC Gear Cutting Quality & Inspection
Quality is built in, not inspected on. We monitor key features during the run and confirm them at final inspection, with CMM verification available for tight tolerances. We provide the inspection and traceability records your quality system requires.
Working with Molybdenum
Molybdenum is very high melting point and thermal stability. We translate those properties into a process plan: the right tooling, speeds, feeds and fixturing for the alloy.
Where the grade, temper or heat-treat condition matters to performance, we confirm it with you and can supply material certificates. Material is procured to recognised standards for consistent, repeatable results.
Applications of CNC Gear Cutting Molybdenum
Molybdenum parts made this way are found throughout aerospace, medical, automotive, electronics and industrial equipment. Prototype, bridge and production volumes are all welcome.
How to Order CNC Gear Cutting Molybdenum
Starting your project takes one email. Send your CAD or 2D drawing, the Molybdenum grade and condition, the quantity and any finish or inspection requirements. We respond quickly with price, lead time and any DFM notes, in clear English.
Parts We Have Run in Molybdenum
Three representative CNC Gear Cutting Molybdenum jobs, with the callouts that actually drove the process plan. Yours will differ — these are here so you can judge whether your part is in our range before you spend time on an RFQ.
Helical pinion
- Material
- Molybdenum
- Size
- m1.5, z18, 15° helix
- Key callouts
- DIN 6, lead deviation 0.008 mm
- Batch
- 300 pcs
Ground after case hardening to 58 HRC at 0.6 mm case depth.
Splined shaft
- Material
- Molybdenum
- 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.
Bevel gear pair
- Material
- Molybdenum
- Size
- m2, z20/z40, 90° axes
- Key callouts
- DIN 8, mounting distance ±0.03 mm
- Batch
- 200 sets
Contact pattern checked on a rolling tester before release.
Finishing Options for Molybdenum
| 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 Cutting Molybdenum
- 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 Molybdenum 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 Cutting
Other Processes for Molybdenum
Send the drawing, the Molybdenum 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 Cutting on Molybdenum?
Machined Molybdenum edges are clean and to specification; edge-break or deburring is added when your drawing calls for it.
Does CNC Gear Cutting Molybdenum require dedicated tooling?
Most Molybdenum gear cutting work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
What surface finish is achievable on Molybdenum with CNC Gear Cutting?
Surface finish on Molybdenum is controlled to your specification; we confirm the achievable Ra against your callout.
Which industries use CNC Gear Cutting Molybdenum parts?
CNC Gear Cutting Molybdenum parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise Molybdenum components are required.