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1. Product Information Material50Mn/40SiMnTiFinishSmoothColorsBlack or yellowTechniqueForging castingSurface HardnessHRC50-56,deepth:4mm-10mmWarranty time2000 hourCertificationISO9001-9002FOB PriceFOB Xiamen USD 20-250/PieceMOQ2 pieceDelivery TimeWithin 30 days after contract established 2. Design / Structure / Details Pics Advantages / Features: 1.Each roller shaft is engineered drop-forged and machined by the utilization of the most modern technological advances known to the industry , Grinding and finishing methods , etc to guarantees max strength , max life . 2.Each roller shell is carefully heat treated to ensure long wear life and stress resistance . 3.surface hardness HBN460 for reduced wear and longer life, adding value to your products further to your business by maximizing durability of your products. 3. Factory View 4. Certificates Application Types for your reference: KOMATSUHITACHISUMITOMOHYUNDAIKATOBULLDOZERPC30UH063SH60R60-5HD250D20PC30-5/6UH04-7SH100R60-7HD1250D30PC40EX30SH120R130HD400D31PC60EX40SH200R200HD400-2D3CPC60-3ZAXIS55SH200-3R210HD400SED3DPC60-5/6EX60-3SH200-5R210-7/R210LC-7HD450D4PC60-7EX60-5SH220R290HD500D4DPC100-2EX70SH220-3R290LCHD700D4HPC100-5EX100SH220LC3R320HD770D5PC120-2EX100-MSH260R320LCHD1250D50PC120-3/5EX120SH265R320LC-7HD1430D50-15PC130EX150SH280RX200HD1880D5BPC200-2ZX200SH300D5HPC200-3EX200-1LS2650VOLVOD60PC200-5/6EX200-2/3/5LS2800EC210D60-6PC200-7EX210LS2800FJ2EC210BD60A/EPC210-5/6EX220-1/3EC210-7D6CPC220-5/6EX220-2DAEWOOEC240D6DPC240-3ZX200-3DH55EC290D6HPC240-5ZX230DH220EC360D65PC300-3ZX240DH220-3/5EC460D65E-8PC300-5KZX330-1DH220LC-5D65E-12PC300-6KZX330-3DH280-3D7GPC300-5/6EX300-1EX400-2D8PC300-7EX300-3EX400-3D85-12PC400-5/6EX300-5EX400-5D85-18EX330EX1100D8KEX350FH220D155FH300FH220-3D155AXFH330D355