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Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding

Categories Cemented Carbide Tool
Brand Name: Sanxin
Model Number: SX1297
Certification: ISO
Place of Origin: China
MOQ: 2
Payment Terms: T/T,L/C,Western Union
Delivery Time: 5-30days
Wear Resistance: Excellent
Density: 14.5 - 15.0 g/cm³
Surface Finishing: Milled and polished
Samples: Available
Categories: Cemented Carbide Tool, Traction Tip
Features: High precision
Service: OEM&ODM
Chemical Composition: WC+Co+Ni
Durability: Long-lasting
Purpose: Mechanical Sealing
Hard Magnetic: 10-400 kJ/m³
Ductility: Good ductility and machinability
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Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding

Non-Magnetic Carbide Ejector Pin Guide Bushing
WC-Ni Alloy Precision Mold Guide for Injection Molding
Product Overview
In high-precision injection molding, ejector pin guide bushings ensure smooth ejection, maintain part quality, and extend mold life. For magnetic-sensitive materials or EMI-sensitive environments, standard steel bushings risk magnetic contamination and premature wear.
Our Non-Magnetic Carbide Ejector Pin Guide Bushings solve these challenges using specialized WC-Ni (Tungsten Carbide-Nickel) alloy, delivering absolute magnetic neutrality, exceptional wear resistance, and micron-level precision.
Core Technology & Design Advantages
  • Guaranteed Non-Magnetic Performance (µ < 1.002) - Nickel-based binder eliminates ferromagnetic elements, ensuring zero magnetic attraction and no interference with sensitive magnetic fields
  • Exceptional Wear Resistance - 90-92 HRA hardness provides 50-100x longer life than tool steel, reducing maintenance and total cost of ownership
  • Superior Surface Finish - Mirror finishes down to Ra 0.1-0.2 μm minimize friction and particle generation
  • Optimized Ejector Pin Support - Precision-matched clearances (0.005-0.015mm) and balanced wall thickness prevent pin deflection and failure
Technical Specifications
ParameterStandard CapabilityHigh-Precision Option
MaterialWC-Ni Non-Magnetic AlloyMultiple grades for wear/corrosion balance
Hardness90-92 HRAConsistent throughout
Inner Diameter (ID) RangeΦ1 mm - Φ50 mmCustom sizes available
ID ToleranceH6 / h6 (±0.004 mm)H4 / h4 (±0.002 mm) or tighter
Outer Diameter (OD) Toleranceg6 / h6 (±0.004 mm)Custom fit per mold base
Concentricity (ID to OD)≤ 0.005 mm≤ 0.003 mm
Surface Finish (Bore)Ra 0.4 μm (Ground)Ra 0.1-0.2 μm (Lapped/Polished)
Special FeaturesLubrication grooves, flanges, stepped ODs, headless styles available
Performance Comparison
PropertyNon-Magnetic Carbide BushingHardened Steel Bushing (SKD61)Standard Carbide Bushing (WC-Co)
Magnetic Permeability< 1.002 (Non-Magnetic)> 100 (Highly Magnetic)1.5-2.0 (Magnetic)
Hardness90-92 HRA50-55 HRC90-92 HRA
Wear LifeMillions of cyclesModerateExceptional
Corrosion ResistanceExcellent (Ni binder)GoodGood
Thermal ConductivityHigh (similar to BeCu)ModerateHigh
Ideal ApplicationMedical, electronics, ferrite moldingGeneral purposeNot for magnetic-sensitive uses
Critical Functions in Mold Guiding
  • Connect and align ejector plates with mold base for accurate pin alignment
  • Maintain optimal pin-to-bushing clearance to prevent binding or excessive wear
  • Withstand lateral forces that cause pin deflection, bending, or breakage
  • Extend mold life by reducing wear on ejector pins and mold plates
Target Applications & Industries
IndustryApplicationBenefits
Medical Device MoldingSyringe components, implantable parts, diagnostic consumablesZero magnetic contamination, cleanroom compatibility, corrosion resistance
Magnetic Material MoldingFerrite cores, magnetic polymer components, bonded magnetsAbsolute non-magnetic property prevents material magnetization
Electronics & ConnectorsPrecision connectors, micro-switches, sensor housingsWear resistance for glass-filled materials, consistent ejection
Optical Component MoldingLens holders, light guides, precision optical partsMirror-finished bore prevents scoring and particle generation
High-Volume Precision PartsAutomotive electronics, consumer goodsExtended tool life reduces maintenance downtime
Material Options & Customization
GradeNi (wt%)Density (g/cm³)Hardness (HRA)Application
XN1006.5-7.514.5-14.888.5-91.0General-purpose, corrosion-resistant
XN1016.5-7.514.5-14.888.5-91.0Higher strength, wear-resistant
XN30010.0-11.014.2-14.686.5-89.5Maximum toughness
XN30110.0-11.014.2-14.686.5-89.5High toughness + wear resistance
Non-Magnetic Carbide Ejector Pin Guide Bushing WC-Ni Alloy Precision Mold Component
Ready to Upgrade Your Mold's Performance with Non-Magnetic Carbide Guide Bushings?
Contact us today for a technical consultation or a customized quotation.
Cheap Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding for sale
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