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Pre-Hardened Mold Steel Custom Precision Spindle & Nozzle Component Kit
This series of multi-spec cylindrical precision shafts, tapered dispensing nozzles, slotted collet chucks and stepped flanged core pins are multi-axis CNC & wire EDM machined for mechanical automation, injection molding and precision fluid dispensing equipment. The full set covers positioning spindles, flow control nozzles, elastic clamping collets and locating core pins as core interchangeable functional parts for high-cycle precision production lines.
- Material: 718H / S136 Mold Steel
- Hardness: HRC 28–36
- Tolerance: ±0.0015 mm
- Surface Finish: Fine Matte Anti-Wear Grinding Finish
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Multi-Function Precision Spindle & Nozzle Engineering
Diversified part structures realize four core functions in one component kit: linear shaft positioning, precision fluid dispensing, elastic clamping and core forming. Multi-step stepped cylindrical design ensures precise coaxiality during high-speed reciprocating rotation and linear sliding; flanged mounting bases with distributed bolt holes deliver stable flat installation on equipment and mold plates. Slotted elastic collets adopt uniform slit structure to achieve consistent clamping force for tiny shafts and workpieces, while tapered micro-tip nozzles form smooth laminar flow channels for precise fluid extrusion without turbulence or blockage.
Monolithic solid shaft body eliminates deflection under high rotational speed and clamping pressure, maintaining micron-level dimensional stability over millions of production cycles.
Wear & Corrosion Resistant Mold Steel Construction
Two mainstream mold steel grades match different production working conditions:
- 718H Pre-Hardened Steel: Balanced toughness and wear resistance, excellent machinability for complex stepped shafts and slotted collets, cost-effective for medium-volume automation and molding applications
- S136 Stainless Mold Steel: Superior anti-rust and chemical corrosion resistance, ideal for fluid dispensing, medical-grade and humid workshop environments, resisting erosion from glue, cutting fluid and disinfectants Both materials support post surface hardening treatments to extend service life under high-frequency friction and contact loads.
Custom Precision Machining Support
- Custom shaft length, taper tip angle, collet slit layout, flange hole distribution and internal flow channel dimensions based on customer 2D/3D CAD drawings
- Optional surface upgrades: Mirror Polishing, Gas Nitriding, PVD Hard Coating, Anti-Corrosion Passivation
- DFM consultation: coaxiality optimization, fluid flow balance design, clamping force adjustment for slotted collets
- Fast single-piece prototype sampling and bulk interchangeable component batch delivery
Key Features & Advantages
- Full-Series Interchangeable Functional Parts: Unified mounting standard for spindles, nozzles, collets and core pins to simplify equipment spare part management.
- Ultra-High Coaxial Precision: Multi-axis simultaneous machining ensures concentricity error ≤0.002mm for high-speed rotation and sliding.
- Elastic Slotted Collet Design: Uniform slit structure delivers even circumferential clamping force without workpiece deformation or slip.
- Tapered Micro Nozzle Flow Control: Smooth tapered inner bore stabilizes fluid extrusion to guarantee consistent dispensing volume for precision filling processes.
- Dual Material Environment Adaptability: 718H for general dry workshop production; S136 stainless steel for corrosive fluid and hygienic manufacturing scenarios.
Technical Specifications
| Parameter | Specification |
|---|---|
| Base Mold Materials | 718H Pre-Hardened Mold Steel, S136 Stainless Mold Steel |
| Alternative Materials | Cr12MoV Wear-Resistant Steel, H59 Brass (Low-Friction Nozzle Variant) |
| Hardness | HRC 28–32 (718H); HRC 32–36 (S136 post heat treatment) |
| Dimensional Tolerance | ±0.0015mm for shaft OD, nozzle bore, collet inner diameter & flange flatness |
| Coaxiality of Cylindrical Shaft | ≤0.002mm per 100mm shaft length |
| Surface Roughness | Ra ≤0.4μm precision ground matte finish |
| Manufacturing Processes | 5-Axis CNC Turning, Wire EDM Slotting, Precision Boring, Thread Tapping, Heat Treatment |
| Surface Treatments | Gas Nitriding, TiN PVD Coating, Mirror Polishing, Anti-Rust Passivation |
| Customization | 100% Fully Customized via CAD Drawings & Workpiece Samples |
Applications
Precision Fluid Dispensing Automation
S136 stainless steel tapered nozzles and dispensing spindles for electronic glue dispensing, cosmetic filling and battery electrolyte injection equipment. Corrosion-resistant steel avoids chemical contamination, smooth inner taper ensures consistent micro-volume fluid output.
Injection Molding Core Pin & Ejector Components
718H stepped core pins and positioning spindles as mold ejector pins, locating cores for multi-cavity plastic molds. High wear resistance withstands long-term ejection friction to extend mold service life.
Electronic Component Assembly Equipment
Slotted elastic collets for robotic wire terminal, connector pin and chip clamping stations. Uniform clamping force prevents scratch damage to tiny precision electronic workpieces during high-speed assembly.
Medical Disposable Production Lines
S136 stainless steel nozzle and spindle kits for medical tube extrusion, syringe component molding and reagent filling equipment, meeting hygiene standards and resisting disinfectant corrosion.
Miniature Hardware Stamping Auxiliary Fixtures
Long stepped positioning spindles as stamping machine feeding and locating shafts, rigid anti-deflection structure maintains stable positioning accuracy for continuous high-speed thin-sheet stamping.
