AR2018 Tractor Radiator 3 Row For Ford 9N 2N 8N Models OEM 8N8005 86551430. 4 Row Aluminum Radiator FOR Bobcat Skid Steer 645 743 743B/DS OE 6648820 6630186. Pls check the item pictures and size to get the suitable items. Part Type: Bottom Roller. Compatible Equipment Type: Excavator. Material 50Mn, through hardened HRC 25-28, CASE hardened HRC52-56, hardened thickness 5-8mm. Yield strength? 0.2 (MPa):? 310. Roller, 45# carbon steel or 40Cr, quenched HRC25-30, surface quenched HRC52-58, hardened to a depth of 2-3mm. Bolt, grade 12.9, HRC45-52. This bottom roller is a durable undercarriage replacement part for your excavator. Our rollers utilize special high strength-hardened steel and quality seal groups that provide excellent lubricating oil retention. Sealed bearings stop dirt, mud, and grime from penetrating inner components. It was designed and manufactured to exact OEM specifications using a high-quality, high-strength steel. It will provide long-lasting and dependable performance even if you operate in the most extreme conditions. Please make sure it will fit your machine before purchasing it. If you are not 100% sure this is what you need, please find out your engine model, series number and contact our Customer-service. Communication is the best way to solve the problem. If you have any problems after you. Continue to bring better product. We have our own production line and more than 20 years of mature production experience. Items include automobile / truck radiators, ATV radiators, intercoolers. Wheel spacers, overflow tank, exhaust pipe hose, silicone hoses, etc. We will very appreciate if u can. Thank you for choosing us. Hope u have a great day. Please verify that this address is the correct one you wish to have your package sent to. It mainly sells all kinds of automobile / truck radiators, ATV radiators, Intercoolers, pipe kits,, silicone hoses, overflow tanks, etc. We sell auto parts of various models, such as Ford, Chevrolet, Dodge, Jeep, Land Rover, GMC, Nissan, etc. F you are not sure whether the products are suitable, you can communicate with us. In addition, feedback is very important to us. If you are satisfied with our service, please give us confirmation and thank you.