Track Rollers Bottom Roller Replacement for Kubota KX057-4 HRC52-58 Excavator Undercarriagee Track Roller

Package Include: 1 x Track Roller Application: Will fit for Kubota excavator KX057-4. This roller will not fit for KX057-5 Specifications： Bottom Roller Weight：19.84 pounds Package Dimensions：5.51"X5.51"X8.26" Item Package Quantity：1x Bottom Roller Color: Black Material: 50 MnB Steel Surface Hardness: HRC52-58, Deepth:5mm-10mm Finish:Smooth Technique: Forging and Casting 1. Wheel body: material 50 Mn, hardening hardness HRC 25-28, CASE hardening hardness HRC 52-56, hardening thickness 5-8mm. 2. Side cover: QT 450-10, strength as follows: tensile strength ob (MPa): 2450 yield strength 00.2 (MPa): 2310 hardness: 160 ~ 210 hb. 3. Roller: 45 # carbon steel or 40 Cr. Quenching of HRC25-30 and surface quenching of HRC 52-58. Hardening depth of 2-3mm. 4. Lock pin 65 Mn or 45 carbon steel, hardness HRC 25-28. 5. Bolts, grade 12.9, HRC 45-52. 6. Seal: nitrile rubber. Operating temperature range-20℃ to 110℃. Description： 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.Made of durable material which is totally corrosion and dust resistant, each item has been factory tested and meets or exceeds OEM specifications. 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. About MIONLVE: If you have any questions, please feel free to contact us, we will solve it for you.

• 【Application】fit for Kubota excavator KX057-4; This roller will not fit KX057-5
• 【Dimensions】Bottom Roller Weight：19.84 pounds; Package; Dimensions：5.51"X5.51"X8.26"; Item Package Quantity：1x Bottom Roller ; Color: Black; Material: 50 MnB Steel; Surface Hardness: HRC52-58, Deepth:5mm-10mm ; Finish:Smooth; Technique: Forging and Casting
• 【Advanced bearing sealing technology】 Track Roller Bottom Roller Sealed bearings stop dirt, mud, and grime from penetrating inner components. It was designed and manufactured to exact specifications using a high-quality, high-strength steel.
• 【Durable & Excellent Performance】The main part of the supporting wheel is made of high hardness alloy material, which is precision cast and heat-treated to give it high strength and hardness. This tough quality makes the supporting wheel able to withstand greater loads and impacts, ensuring the stability and safety of the equipment.
• 【Functional technology support】The rolling design of the support wheel has been optimized to achieve extremely low rolling resistance. This not only reduces energy consumption and improves the working efficiency of the equipment, but also makes the wheel run more smoothly and stably, reduces the heat and noise generated by friction, and improves the overall experience of using the wheel.