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| Brand Name: | yue lin sen |
| Model Number: | Y2257 |
| MOQ: | 100 pcs |
| Price: | 0.5-20 |
| Payment Terms: | T/T |
| Supply Ability: | 5000000pcs |
Customized 304 Stainless Steel Metal Long Axis CNC Milling Spare Parts
Custom 304 Stainless Steel Metal Long Shaft CNC Milling Parts & Components are precision-engineered, elongated mechanical elements manufactured to exact specifications for demanding applications. These parts start as solid 304 stainless steel bar stock and are transformed through advanced multi-axis CNC milling into complex, high-tolerance shafts, rods, leadscrews, or spindles. The process excels at creating intricate features along the shaft's length, such as flats, keyways, splines, gears, threads, and precision bores, while maintaining critical straightness, concentricity, and surface finish. The inherent strength and corrosion resistance of 304 stainless steel ensure these components offer durability and reliability in rigorous operational environments.
Material Selection & Preparation: Certified 304 stainless steel round bar is selected, inspected for straightness, and cut to an optimized blank length. The blank may be stress-relieved if required for high-precision applications.
Precision Turning & Centering: The initial blank is mounted in a CNC lathe or between centers to establish the primary diameters, create precise center bores for subsequent milling support, and ensure the shaft is running true.
Multi-Axis CNC Milling (Core Process): The shaft is transferred to a multi-axis (3-axis, 4-axis, or 5-axis) CNC milling machine or a mill-turn center. Using specialized long-reach tooling and steady rests to minimize deflection, the machine performs operations such as:
Milling longitudinal flats or D-shaped sections.
Cutting precise keyways or splines along the length.
Machining gear teeth or helical features.
Drilling and tapping cross-holes or creating complex lateral geometries.
In-Process Inspection & Straightness Control: Probing cycles and manual checks are performed during machining to monitor critical dimensions. Straightness is constantly verified and can be corrected in-process if necessary.
Heat Treatment & Stress Relieving (Optional): For applications requiring specific mechanical properties or to relieve machining stresses in ultra-long shafts, heat treatment (annealing, solution treatment) is performed.
Final Finishing Operations: This may include precision grinding for ultra-tight diameter tolerances, honing of internal bores, thread chasing, and vibratory finishing or electropolishing for superior surface quality.
Comprehensive Metrology & Reporting: The finished shaft undergoes full inspection using CMMs, optical comparators, gear testers, and surface roughness analyzers. A detailed inspection report is generated.
Industrial Machinery & Automation: Drive shafts, conveyor rollers, actuator rods, linear motion shafts, and precision guide rods.
Food & Beverage Processing: Mixer shafts, auger screws, filling machine spindles, and other components requiring corrosion resistance and cleanability.
Marine & Offshore: Valve stems, pump shafts, and linkage components exposed to corrosive environments.
Medical & Laboratory Equipment: Shafts for diagnostic devices, adjustment mechanisms, and precision positioning systems.
Packaging Machinery: Filling nozzles, camshafts, and rotating mandrels.
Robotics & Motion Control: Robotic arm linkages, harmonic drive inputs, and custom actuator components.
| Category | Parameter | Specification / Capability |
|---|---|---|
| Material | Standard Grade | 304 Stainless Steel (AISI 304, UNS S30400) |
| Alternative Grades | 303 (Improved machinability), 316/L (Higher corrosion resistance) | |
| Condition | Annealed, Cold Drawn, Centerless Ground stock available. | |
| Machining Scope | Primary Process | Multi-Axis CNC Milling (3/4/5-axis) integrated with CNC Turning (Mill-Turn). |
| Supporting Processes | Deep Hole Drilling, Gun Drilling, ID/OD Grinding, Gear Hobbing/Shaping. | |
| Dimensional Capacity | Maximum Shaft Length | Up to 2000 mm (Standard). Longer configurations with special setup. |
| Maximum Turned Diameter | Up to Ø120 mm. | |
| Maximum Milled Feature Size | Limited by tool reach and shaft stability. | |
| Precision & Tolerances | Diameter Tolerance (Milled/Turned) | Standard: ±0.025 mm. Precision: ±0.01 mm. Grinding: ±0.005 mm. |
| Straightness Tolerance | As low as 0.01 mm per 100 mm length (achievable with grinding). | |
| Concentricity / TIR | ≤ 0.02 mm for critical bearing/journal surfaces. | |
| Spline/Keyway Tolerance | Per DIN/ISO/ANSI standards (e.g., DIN 5480, ANSI B92.1). | |
| Surface Finish (Ra) | As-milled: 1.6 - 3.2 µm. Ground/Polished: 0.4 - 0.8 µm. Electropolished: < 0.4 µm. | |
| Feature Complexity | Axial Features | Flats, hexes, Torx profiles, longitudinal grooves. |
| Radial Features | Gears, splines, threads (external/internal), pin holes, snap ring grooves. | |
| End Features | Complex hubs, flanges, tapered ends, special drive forms. | |
| Quality Assurance | Inspection Equipment | Large Travel CMM, Optical Comparator for profiles, Gear Measuring Machine, Surface Tester. |
| Material Certification | Mill Test Certificate (MTC) per EN 10204 3.1 provided. | |
| First Article Inspection | Full FAIR per AS9102 or customer-specific format available. | |
| Production Details | Prototype Lead Time | 2-4 weeks. |
| Low to Medium Volume Production | Production planning based on complexity and quantity. | |
| Secondary Services | Heat Treatment | Annealing, Stress Relieving, Solution Treatment. |
| Surface Treatment | Passivation, Electropolishing, Bead Blasting, Various Platings. | |
| Marking | Laser etching for part numbers, logos, or orientation marks. |
Address
Room 203, Building 2, Ande Alley, Changan Town, Dongguan City, Guangdong Province
Tel
86--13267262720
