VT machining offers CNC 4-Axis Machining for 42CrMo Steel (GB/T 3077 / ~4140 / 42CrMo4), typically supplied Q&T. Chinese equivalent of 4140/42CrMo4.
CNC 4-Axis Machining Notes for 42CrMo Steel
Multi-axis machining lets 42CrMo Steel parts be completed in one or two setups, which improves feature-to-feature accuracy.
For estimating, a 100 × 100 × 10 mm block of 42CrMo Steel weighs about 0.79 kg.
Starting Parameters for CNC 4-Axis Machining 42CrMo Steel
| Cutting speed (carbide) | 115-200 m/min |
|---|---|
| Feed per tooth | 0.035-0.123 mm |
| Spindle speed, Ø10 mm end mill | 3660-6370 rpm |
| Insert / tool class | ISO P — CVD-coated carbide |
| Coolant | Emulsion (5-8%); dry is possible for interrupted cuts |
| Rotary positioning accuracy | ±10 arc-sec (≈ ±0.005 mm at Ø100 mm) |
Starting values for 42CrMo Steel, Q&T; optimised on the first article.
Full material data for 42CrMo Steel (GB/T 3077 / ~4140 / 42CrMo4) is on the CNC Milling 42CrMo Steel page.
More on CNC 4-Axis Machining Steel
Finishing options, quality documentation and general cnc 4-axis machining guidance for all steel grades are on our CNC 4-Axis Machining Steel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC 4-Axis Machining 42CrMo Steel
Send a STEP/IGES model or PDF drawing, confirm 42CrMo Steel and its condition (we usually see it supplied Q&T), the quantity, critical tolerances and any finish or certificate requirements.
42CrMo Steel in Other Processes
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Send the drawing, the 42CrMo Steel condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
What tolerances can you hold for CNC 4-Axis Machining 42CrMo Steel?
Achievable tolerances for 42CrMo Steel machining depend on the alloy, geometry and feature size. Milling holds positional and dimensional tolerances to around ±0.01 mm, tighter with precision setups. Exact figures are confirmed against your drawing callouts.
What is CNC 4-Axis Machining 42CrMo Steel and how is it done?
CNC 4-Axis Machining 42CrMo Steel refers to four-axis machining adds a rotary axis for indexed or continuous machining around a part. Applied to 42CrMo Steel — strong, economical and widely available — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.
Does CNC 4-Axis Machining 42CrMo Steel require dedicated tooling?
Most 42CrMo Steel machining work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
Can VT machining make custom 42CrMo Steel parts to my drawing?
Yes. 42CrMo Steel machining is made to order from your CAD/2D drawing. Share your geometry, material grade, tolerance and quantity and we will confirm feasibility, lead time and pricing.