
Engineered for reliable shaft fixing in moderate-load power transmission, the HC205 extended inner ring bearing matches precise 25mm x 52mm x 17mm dimensions with heavy-duty GCr15 chrome steel. Equipped with dual socket set screws, it guarantees slip-free grip and long-lasting durability in industrial machinery and automated systems.
📋 Technical Specifications & Dimensions
Series / Model: HC205 (Equivalent to GRA025-NPP-B, RA025RR)
Bore Diameter (Inner d): 25 mm
Outer Diameter (Outer D): 52 mm
Total Thickness / Width (B): 17 mm (Extended wide inner ring profile)
Material Architecture: High-Carbon GCr15 Chrome Steel
Locking Technology: Dual Socket Set Screws (Offset positioning for maximum shaft clamping bite)
Ring Geometry: Spherical Outer Surface (Compensates for initial angular offset and shaft deflection)
Sealing Configuration: Heavy-Duty Dual Rubber Contact Seals with Metal Flingers
🌟 Key Engineering Highlights
Firm Dual-Point Clamping: The dual set-screw mechanism bites deeply into the shaft upon tightening, eliminating rotational play and axial drift under continuous load cycles.
Optimized Load Distribution: The widened inner ring profile evenly distributes radial and tilting loads, shielding the shaft assembly from premature wear and stress fatigue.
Universal Housing Compatibility: Designed to drop smoothly into standard 205-series pillow blocks, flanged housings, and take-up units without modification.
Advanced Contaminant Shielding: Factory pre-lubricated with high-performance industrial grease and guarded by double-lip contact seals to block out abrasive dust, dirt, and moisture.
⚙️ Primary Deployment Sectors
Industrial Automation & Conveying: Medium-duty roller conveyor systems, sorting tables, and automated packaging lines.
Agricultural Machinery: Grain augers, combine harvester auxiliary drives, and tractor implement rollers.
General Mechanical Units: Industrial blowers, fan assemblies, and commercial gear transmission systems.


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