VT machining offers CNC Gear Grinding for 40Cr Steel (GB/T 3077 / ~5140 / ~41Cr4 / SCr440), typically supplied Q&T. Chinese Cr steel, cheaper than 42CrMo with lower hardenability.
CNC Gear Grinding Notes for 40Cr Steel
Gear teeth in 40Cr Steel are cut to your accuracy class; heat treatment is optional depending on load.
Process Data for CNC Gear Grinding 40Cr 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 40Cr Steel, Q&T; confirmed on the first part.
Full material data for 40Cr Steel (GB/T 3077 / ~5140 / ~41Cr4 / SCr440) is on the CNC Gear Hobbing 40Cr 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.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Gear Grinding 40Cr Steel
Send a STEP/IGES model or PDF drawing, confirm 40Cr Steel and its condition (we usually see it supplied Q&T), the quantity, critical tolerances and any finish or certificate requirements.
40Cr Steel in Other Processes
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Send the drawing, the 40Cr Steel condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
What is the typical lead time and minimum order for CNC Gear Grinding 40Cr Steel?
CNC Gear Grinding prototypes for 40Cr Steel can be produced quickly and scaled to series production. Send your drawing and quantity and we will advise lead time and any minimum order.
Can VT machining make custom 40Cr Steel parts to my drawing?
Yes. 40Cr Steel gear cutting 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.
What gear accuracy class can you achieve on 40Cr Steel?
Gear accuracy is specified to DIN/AGMA classes appropriate to the application. Profile and lead are controlled so 40Cr Steel gears run accurately and quietly under load.
What is CNC Gear Grinding 40Cr Steel and how is it done?
CNC Gear Grinding 40Cr Steel refers to gear grinding finishes hardened gear teeth to high accuracy class for quiet, durable transmission. Applied to 40Cr Steel — strong, economical and widely available — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.
What tolerances can you hold for CNC Gear Grinding 40Cr Steel?
Achievable tolerances for 40Cr 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 40Cr Steel a good choice for CNC Gear Grinding?
40Cr 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 40Cr Steel gear cutting part meets your dimensional and functional requirements.