VT machining offers CNC Gear Grinding for 42CrMo Steel (GB/T 3077 / ~4140 / 42CrMo4), typically supplied Q&T. Chinese equivalent of 4140/42CrMo4.
CNC Gear Grinding Notes for 42CrMo Steel
Gear teeth in 42CrMo Steel are cut to your accuracy class; heat treatment is optional depending on load.
Process Data for CNC Gear Grinding 42CrMo Steel
| Wheel (supply condition) | Aluminium oxide, medium grade |
|---|---|
| Depth per pass (rough / finish) | 0.01-0.03 / 0.002-0.005 mm |
| Achievable finish | Ra 0.2-0.4 µm |
| Typical size tolerance | ISO 1328 class 4-6 |
Typical values for 42CrMo Steel, Q&T; confirmed on the first part.
Full material data for 42CrMo Steel (GB/T 3077 / ~4140 / 42CrMo4) is on the CNC Gear Hobbing 42CrMo Steel page.
More on CNC Gear Grinding Steel
Finishing options, quality documentation and general cnc gear grinding guidance for all steel grades are on our CNC Gear Grinding Steel page.
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Quoting CNC Gear Grinding 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
Does CNC Gear Grinding 42CrMo Steel require dedicated tooling?
Most 42CrMo Steel gear cutting work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
What gear accuracy class can you achieve on 42CrMo Steel?
Gear accuracy is specified to DIN/AGMA classes appropriate to the application. Profile and lead are controlled so 42CrMo Steel gears run accurately and quietly under load.
What tolerances can you hold for CNC Gear Grinding 42CrMo Steel?
Achievable tolerances for 42CrMo Steel gear cutting depend on the alloy, geometry and feature size. We hold tight, repeatable tolerances appropriate to the feature and material. Exact figures are confirmed against your drawing callouts.
Why is 42CrMo Steel a good choice for CNC Gear Grinding?
42CrMo Steel is strong, economical and widely available, which makes it well suited to CNC Gear Grinding. We tune the process to the alloy so the finished 42CrMo Steel gear cutting part meets your dimensional and functional requirements.