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250*600 Crusher Rolls Spare Parts Oil Raw Materials Alloy Steel Roller. Superior Durability: Forged from chromium-molybdenum alloy steel with 55-60 HRC hardness. Customizable Dimensions: Diameter 250-400mm and Length 800-2100mm available with customization. Energy Efficient Design: Patented geometry reduces power consumption by 15-20%. Smart Maintenance: Quick-release housings and self-lubricating seals cut downtime by 40%. Tailored Solutions: Adjustable gaps, groove patterns, and connection types for specific seeds. Quality Guarantee: Pre-production samples and final inspection before shipment. 1-Year Warranty: Comprehensive warranty coverage for 1 year.