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Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding
Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding
Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding
Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding
Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding
Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding
Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding
Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding
Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding
Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding
Specifications
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
Description
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
Parameter Standard Capability High-Precision Option
Material WC-Ni Non-Magnetic Alloy Multiple grades for wear/corrosion balance
Hardness 90-92 HRA Consistent throughout
Inner Diameter (ID) Range Φ1 mm - Φ50 mm Custom sizes available
ID Tolerance H6 / h6 (±0.004 mm) H4 / h4 (±0.002 mm) or tighter
Outer Diameter (OD) Tolerance g6 / 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 Features Lubrication grooves, flanges, stepped ODs, headless styles available
Performance Comparison
Property Non-Magnetic Carbide Bushing Hardened Steel Bushing (SKD61) Standard Carbide Bushing (WC-Co)
Magnetic Permeability < 1.002 (Non-Magnetic) > 100 (Highly Magnetic) 1.5-2.0 (Magnetic)
Hardness 90-92 HRA 50-55 HRC 90-92 HRA
Wear Life Millions of cycles Moderate Exceptional
Corrosion Resistance Excellent (Ni binder) Good Good
Thermal Conductivity High (similar to BeCu) Moderate High
Ideal Application Medical, electronics, ferrite molding General purpose Not 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
Industry Application Benefits
Medical Device Molding Syringe components, implantable parts, diagnostic consumables Zero magnetic contamination, cleanroom compatibility, corrosion resistance
Magnetic Material Molding Ferrite cores, magnetic polymer components, bonded magnets Absolute non-magnetic property prevents material magnetization
Electronics & Connectors Precision connectors, micro-switches, sensor housings Wear resistance for glass-filled materials, consistent ejection
Optical Component Molding Lens holders, light guides, precision optical parts Mirror-finished bore prevents scoring and particle generation
High-Volume Precision Parts Automotive electronics, consumer goods Extended tool life reduces maintenance downtime
Material Options & Customization
Grade Ni (wt%) Density (g/cm³) Hardness (HRA) Application
XN100 6.5-7.5 14.5-14.8 88.5-91.0 General-purpose, corrosion-resistant
XN101 6.5-7.5 14.5-14.8 88.5-91.0 Higher strength, wear-resistant
XN300 10.0-11.0 14.2-14.6 86.5-89.5 Maximum toughness
XN301 10.0-11.0 14.2-14.6 86.5-89.5 High toughness + wear resistance
Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding
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Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding

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Product Detail
Brand Name :
Sanxin
Model Number :
SX1297
Certification :
ISO
Place of Origin :
China
MOQ :
2
Payment Terms :
T/T,L/C,Western Union
Contact Supplier
Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding
Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding
Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding
Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding
Non-Magnetic WC-Ni Alloy Ejector Pin Guide Bushing for High Precision Injection Molding

Zhuzhou Sanxin Cemented Carbide Manufacturing Co., Ltd

Verified Supplier
8 Years
hunan, zhuzhou
Since 2003
Business Type :
Manufacturer, Importer, Exporter, Seller, Other
Main Products :
Tungsten Carbide Processing, Tungsten Carbide Nozzle, Tungsten Carbide Punch
Total Annual :
8000000-10000000
Employee Number :
150~180
Certification Level :
Verified Supplier
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