Hybrid Ceramic Baitcasting Reel Spool Bearing

Bearing Precision Directly Impacts Performance

• Bearings support shaft rotation by utilizing internal balls to minimize friction, ensuring smooth rotation.
• Improves energy efficiency, enhances overall product performance, and lowers failure rates.

Hybrid Ceramic Bearings

• Fast heat dissipation and high speed capability
• Dust-proof and liquid contaminant resistant with high quiet performance; suitable for harsh environments
• Features Silicon Nitride Ceramic Balls (Black Balls), Metal Outer Ring, Metal Retainer Cage, and Metal Inner Ring

Full Ceramic Bearing

• High rotation speed and low noise output
• Low friction torque for enhanced speed performance
• Zirconia (ZrO2) ceramic construction for high corrosion, acid, and alkali resistance
• Capable of handling higher bearing load capacity

Full Ceramic Bearing Exploded View

• Seals: PTFE
• Cage: PTFE
• Inner Ring: ZrO2 (Zirconia Ceramic)
• Balls: ZrO2 (Zirconia Ceramic)
• Outer Ring: ZrO2 (Zirconia Ceramic)

Bearing Structure Diagram & Features

• Bearing Rings (Inner & Outer): Made of high-purity bearing steel with low oxide content to greatly increase hardness.
• Rolling Elements: High-precision steel balls effectively transfer loads between the inner and outer rings.
• Cage/Retainer: Optimizes load distribution and reduces friction heat.
• Integral Seals: Retains bearing grease and prevents foreign contaminants from entering the interior.

Bearing Clearance and Lubrication Specifications

• Bearing Clearance: Total internal relative movement distance of bearing rings.
• Clearance levels: C2 (3–8 μm) < C0 (9–14 μm) < C3 (15–25 μm).
• Bearing Grease: Increases lubrication, reduces noise, lubricates internal components, and enhances performance.
• Standard Bearings: Uses domestic grease brands (e.g., Great Wall, Swift).
• High-Precision Bearings: Uses imported Japanese Kyodo Yushi grease.

Bearing Fit Types

• There are three types of fit: clearance fit, interference fit, and transition fit.
• Clearance Fit: The shaft is smaller than the hole, leaving a clearance gap between shaft and hole (Shaft < Hole, loose fit).
• Interference Fit: The shaft is larger than the hole, creating a very tight fit (Shaft ≥ Hole, tight fit).
• Transition Fit: Along the entire axial length of shaft and hole, some areas have clearance fit while others have interference fit. Overall fit is relatively tight (tight fit).

High-Performance Bearings

• The most direct way to improve reel smoothness

Double-Sealed Stainless Steel Reinforced Hybrid Ceramic Bearings

• Dual-seal design offers dustproof, rustproof, and corrosion-resistant performance for enhanced stability and durability
• Combines the smoothness of full ceramic bearings with the rigidity of stainless steel bearings
• Suitable for full fishing reel replacement
• Provides extreme durability and smoothness

Recommendation for Smoother Performance

• To achieve an ideal smooth state, it is recommended to replace the bearings in the spool and side cover with hybrid ceramic bearings.