VT machining offers CNC Gear Grinding for Q345 Steel (GB/T 1591 (now Q355) / ~S355JR), typically supplied hot-rolled. Chinese low-alloy high-strength steel; replaced by Q355 in GB/T 1591-2018.
CNC Gear Grinding Notes for Q345 Steel
Gear teeth in Q345 Steel are cut to your accuracy class; heat treatment is optional depending on load.
Process Data for CNC Gear Grinding Q345 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 Q345 Steel, Hot-rolled; confirmed on the first part.
Full material data for Q345 Steel (GB/T 1591 (now Q355) / ~S355JR) is on the CNC Gear Hobbing Q345 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 Q345 Steel
Send a STEP/IGES model or PDF drawing, confirm Q345 Steel and its condition (we usually see it supplied hot-rolled), the quantity, critical tolerances and any finish or certificate requirements.
Q345 Steel in Other Processes
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Send the drawing, the Q345 Steel condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
What gear accuracy class can you achieve on Q345 Steel?
Gear accuracy is specified to DIN/AGMA classes appropriate to the application. Profile and lead are controlled so Q345 Steel gears run accurately and quietly under load.
What is the typical lead time and minimum order for CNC Gear Grinding Q345 Steel?
CNC Gear Grinding prototypes for Q345 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.
What tolerances can you hold for CNC Gear Grinding Q345 Steel?
Achievable tolerances for Q345 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 Q345 Steel a good choice for CNC Gear Grinding?
Q345 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 Q345 Steel gear cutting part meets your dimensional and functional requirements.