Radiator Intercooler Hose Pipe. John Deere 27D Bottom Roller Replacement for John Deere Mini Excavators. 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. (On Sundayis our rest day). If you want me send the item to another address, please send me a message. Many of our products have overseas warehouses, including Australian warehouses, American warehouses and. Please contact me before you return it. The item is lost during transit; b. The item is damaged during transport; c. The item in the actual use of the process of quality problems. Very appreciated for your support. We will do our best to solve your problem as soon as possible. Feedback is very important to us. Good communication can fix all problems, we always believe that as long as you are willing to communicate with us, we will give you a satisfactory answer. Thank you for choosing us and have a great day! Welcome to my shop, We offer an extensive range of products selected by our professionals. Superiority in details and quality is a high priority. We also have a high-standard team, qualified by authorized organizations to ensure products are of the highest quality. We work hard to make sure EVERY CUSTOMER 100% approvingly.