High-Precision Grinding Parts
Engineered Precision Grinding Solutions for Critical OEM Components
At DaHong Precision, we provide custom high-precision grinding parts engineered to deliver ultra-tight tolerances, mirror-level finishes, and reliable repeatability for demanding OEM applications.
What Is the Importance of Precision Grinding?
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Stability
One of the greatest values of precision grinding is stability. Consistent dimensions, reliable tolerances, and repeatable surface finishes are critical for automated systems and precision assembly, ensuring smooth integration, reduced downtime, and long-term operational reliability.
Precision
Grinding is the only machining process that can consistently and reliably achieve tolerances of ±0.002–0.005 mm.
Turning and milling cannot reach this level of stability, and even some lapping processes are less consistent than precision grinding.
Repeatability
Grinding ensures dimensional consistency across each production batch. Uniform surface roughness and controlled form and positional tolerances help reduce wear, heat generation, and friction, thereby enhancing the overall durability of the assembled system.
High-hardness materials
Hardened steel (HRC 55–62) cannot be machined with a turning tool, whereas grinding can easily process it. This allows components to achieve both high strength and high precision.
Excellent surface integrity
Grinding can easily achieve surface roughness of Ra 0.4, Ra 0.2, or even lower. This has a significant impact on friction, service life, and overall performance.
Longer Service Life
The better the surface quality and fit accuracy, the longer the component service life. Grinding can reduce maintenance costs while enhancing machine performance.
Dahong Precision's grinding capabilities can meet the requirements of complex geometries, fine surface finishes, and consistent production stability.
External cylindrical grinding: ±0.005 mm
Internal cylindrical grinding: ±0.005 mm
Surface (planar) grinding: ±0.005 mm
Centerless grinding: ±0.003 mm
Roundness: ≤0.002 mm
Coaxiality: ≤0.005 mm
Grinding surface roughness: Ra 3.2 – 0.8 μm
Frequently Asked Questions
Which industries commonly use your precision ground components?
Original Equipment Manufacturer (OEM) machinery
Automation equipment
Industrial systems
Automotive components / automotive parts
Precision mechanical assemblies
Do you support custom or non-standard ground components?
Certainly. We specialize in the production of custom and non-standard precision-ground components, and can manufacture them for OEM projects based on your drawings, samples, or functional requirements.
What materials are suitable for high-precision grinding?
We commonly grind materials such as carbon steel (e.g., 45# / 1045), alloy steel (40Cr, 42CrMo), stainless steel, tool steel, and hardened steel components.
Can you support tight delivery schedules for OEM projects?
Yes. With in-house grinding capabilities and optimized production planning, we support reliable lead times and stable delivery schedules for OEM and long-term production programs.
What is the difference between cylindrical grinding and surface (planar) grinding?
Cylindrical grinding is used to machine the external or internal surfaces of cylindrical components, whereas surface (planar) grinding is employed to produce smooth surfaces on flat planes.
What types of grinding services do you offer?
External cylindrical grinding
Internal cylindrical grinding
Surface (planar) grinding
Centerless grinding
Form and profile grinding
These processes are capable of meeting complex geometries and tight tolerance requirements.
Can you grind hardened steel components?
Yes. We frequently grind quenched steel parts with hardness up to HRC 55–62, including components that require heat treatment prior to grinding. Grinding ensures dimensional accuracy while maintaining the material's hardness.
How do you maintain dimensional stability during the grinding process?
Dimensional stability is ensured through thermal management, stress relief, optimization of grinding parameters, and accurate fixturing. These practices prevent part distortion and maintain long-term dimensional consistency.
Let's Make Something Extraordinary Together
At Dahong Precision, we are a precision parts CNC turning service factory. Whether you need simple parts or highly complex parts, our custom non-standard parts CNC turning service is worth it. Contact us now to discuss your project and learn how we can help you achieve your goals.
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