Precision Inner Cone Tungsten Carbide Bushing with High Wear Resistance for Mining and Construction Machinery

The Inner Cone Carbide Bushing is a wear-resistant component manufactured using high-purity tungsten carbide powder and rare metal binders through processes including cold pressing, sintering, and precision grinding. Its core feature is the precise inner cone geometry, specifically designed for applications involving high impact loads, severe abrasive environments, and tapered connections requiring tight fit. This component serves as an ideal core element for cone crushers, rotary drilling rig bits, and various tapered hydraulic sealing assemblies.

• Extreme Wear Resistance: With material hardness up to HRA 88-92, wear resistance is 10-20 times higher than high-manganese steel or ordinary alloy steel bushings. Effectively resists cutting and plowing of the inner wall by hard particles in ore, gravel, or slurry, significantly reducing replacement frequency.
• High-Precision Inner Cone Fit: Precision grinding using CNC cylindrical grinders with sine gauges. Inner cone angle tolerance controlled within ±0.05°, with taper contact ratio exceeding 95%. Ensures perfect "surface contact" with tapered shaft or seal plug, avoiding stress concentration and premature failure.
• Excellent Compressive Strength: Compressive strength exceeds 4,000 MPa. Unique tapered geometry converts radial loads into axial preload, creating self-tightening effect under impact. Protects internal tapered shaft from damage and resists fatigue spalling under alternating stresses.
• High-Temperature Resistance and Corrosion Resistance: Maintains basic hardness without softening at 800°C. Dense carbide matrix effectively resists corrosion from acidic mine water, seawater, or chemical media.

• Mining Machinery: Fixing bushings for concave liners in cone crushers, cone sleeves in gyratory crushers
• Construction Machinery: Rod guide bushings for hydraulic breakers, cone locking sleeves for rotary drilling rig bits
• Oil Drilling: Inner liners for universal joint housing in downhole drilling tools
• General Machinery: Guide post taper bushings for high-precision molds, tapered bearing bushings for heavy-duty truck wheel hubs

We understand that every working condition is unique. In addition to standard specifications, we offer comprehensive customization services:

• Material Customization: Formula adjustments for high impact (lower hardness with higher toughness) or high wear (higher hardness) applications
• Size Customization: Minimum inner diameter down to 5 mm, maximum outer diameter up to 500 mm, with length ratio adjustable according to drawings
• Composite Design: Bimetallic composite structure of "steel sleeve + carbide inner liner" for cost-effective solutions

We possess advanced low-pressure sintering technology and digitally controlled inner cone grinding centers, ensuring consistency in roundness and taper for every inner cone bushing. While delivering "near-wear-proof" hardness, we also address the installation challenge of carbide's brittleness through specially designed chamfers and oil groove configurations.