Get high-precision CNC camshaft machining services with in-house grinding and tolerance control up to ±0.01 mm.
We manufacture custom camshafts for automotive, racing, and industrial engines, supporting both prototyping and production.
We offer end-to-end camshaft manufacturing services, from raw blank machining to final grinding and finishing.
👉 Suitable for OEMs, engine builders, and performance brands.
Tops Precision is an ISO-certified manufacturing company in China. We bring a wealth of experience and a strong reputation of more than a decade. We machine camshafts from blank to finished parts.
Our process is completely in-house. Each step is planned and controlled to ensure the camshaft meets specification without compromising on quality standards. With a strong supply chain, we support OEM manufacturers from all over the world.
Our camshaft machining process is divided into obvious stages. Each stage serves a purpose. None of the steps is skipped or rushed. This is how we ensure our strict quality and consistency.
We start by rough-turning the camshaft. This eliminates most of the excess material. We manufacture the bearing journals, gear ends, cam lobes, and other critical sections. The idea is to get the shape close without going to the final size.
At this point in the process (during rough machining), we don’t cut the part to the final size yet. We intentionally leave a little extra material on the camshaft.
The part is inspected before it goes forward. That includes runout and general alignment. If something is wrong, it is fixed before the next setting.
Semi-finishing typically includes an early grinding step. This moves the cam lobes and other features closer to their final shape. It is also useful to relieve stress remaining from rough turning.
At this point, we are not going after final tolerances. We are preparing the profiles and surfaces to finish grinding. The machines remove a small amount of material to smooth out the earlier cuts. This step is necessary for proper stability. It eliminates the heat distortion and ensures the part will not move or warp.
Here is the final size of the camshaft. The machines are prepared for fine-tolerance work. Cam profiles are machined to the exact lift and timing values. We utilize correct wheels and speeds to keep the part cool and prevent any burn or warping.
When the grinding is completed, the journals and lobes are polished. This provides the proper surface for oil flow and wear resistance. It also minimizes noise and friction, allowing efficient engine working.
Cam machining requires more than just standard machines. It requires well-established processes and good controls. We take great care to control every step to make sure the final part is correct.
We operate cam grinders with controls, and our machines keep the shaft and wheel synchronized. Speed, feed, and pressure are tightly controlled.
We generally use hard wheels such as CBN. These are well-formed and work cleanly. We also check the proper flow of coolant. This prevents heat-related problems and provides a neat finish.
Each machine is inspected regularly as part of our SOPs. We do not wait for things to fail. If something is out of kilter, we service or replace it before it becomes a problem.
Quality is not an afterthought at our facility. Every step is quality-controlled before the part progresses. These measures include runout, diameter, and profile shape checks.
Final inspections include cam lift, journal size, and surface finish. We understand the nature of a good camshaft and what it requires to function. If a part fails, it’s sorted, not shipped.
Our camshafts are used in:
At Tops Precision, surface finish matters just as much as the camshaft shape. A smooth, even surface keeps friction low, helps oil flow, and avoid parts from wearing too early. We apply the right finish depending on what the camshaft is made of and where it’s going to be used.
We use polishing after the grinding to remove fine marks. It leaves the journals and cam lobes smooth and ready for use. It also helps reduce engine noise and wear and tear.
A clean and even surface is created directly during the final grinding process. It’s ideal when the camshaft doesn’t need extra finishing. It provides sufficient smoothness for effective oil control and long-term use.
For higher-end camshafts, we use a superfine finish. It gives a surface near-mirror state, helping with wear and keeping parts cool under load.
If a camshaft needs extra treatment like nitriding and coating, we stop at the right finish. This helps the next step bond better and last longer. We make sure the surface is prepped just right.
At our factory, we check every finish from start to end. That way, the camshaft leaves our shop ready to run, smooth, clean, and perform long-lasting.
Yes, we manufacture camshafts based on your lift, timing, and geometry requirements.
MOQ starts from 1 piece for prototyping.
Up to ±0.01 mm depending on geometry.
Yes, we offer in-house camshaft and cylindrical grinding.