Tolerances for CNC Milling
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| Parameter | 3-Axis | 4-Axis | 5-Axis |
| Maximum Part Size | 4000 × 1500 × 600 mm | 1000 × 500 × 500 mm | 1000 × 500 × 500 mm |
| Standard Machining Tolerance | ±0.05 mm to ±0.10 mm | ±0.025 mm to ±0.05 mm | ±0.015 mm to ±0.03 mm |
| High Precision Tolerance | Down to ±0.025 mm | Down to ±0.01–0.02 mm | Down to ±0.01 mm achievable under optimal conditions |
| Hole-to-Hole Position Accuracy | ±0.03–0.08 mm | ±0.02–0.05 mm | ±0.01–0.03 mm |
| Perpendicularity (per 100 mm) | 0.04–0.10 mm | 0.02–0.05 mm | 0.01–0.03 mm |
| Flatness (per 200 mm) | 0.03–0.10 mm | 0.02–0.06 mm | 0.01–0.03 mm |
| Surface Roughness (Ra) | Ra 1.6–3.2 μm, down to Ra 0.8 μm | Ra 0.8–1.6 μm, down to Ra 0.4 μm | Ra 0.4–1.6 μm, down to Ra 0.2–0.4 μm (post-process required) |
| Thread Specifications | ISO metric / UNC / UNF threads, standard machining tolerance 6H / 6g | Precision threading per ISO standards | High-precision threading for functional assemblies |
| Lead Time (Simple Parts) | 1–3 days | 1–3 days | 2–5 days |
Note: Values shown are typical industry ranges under stable production conditions. Actual tolerances depend on part geometry, material, and machining strategy.
Contact Information
Email: liu.ji@cq-taidexing.com
Address: No. 2 Xishan Road, Biquan Subdistrict, Bishan District, Chongqing City
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