Bottom Roller Replacement for John Deere 46D Excavator Undercarriage Mini Excavator Track Roller

Package Include: 1x Track Roller （As Shown） Application: For Caterpillar CAT 305E Excavator Specifications： Bottom Roller Weight：22.05 pounds Package Dimensions：6.69"X6.69"X10.6" Item Package Quantity：1 x Bottom Roller Color:Black Material: 50 MnB Steel Surface Hardness: HRC52-58, Depth:5mm-10mm Finish:Smooth Technique: Forging and Casting Description： 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℃.

• For Caterpillar CAT 305E Excavator
• Bottom Roller Weight：22.05 pounds; Package Dimensions：6.69"X6.69"X10.6"
• 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.
• If you have any questions, never mind contact our friendly,helpful,and knowledgeable customer service representatives,we will be glad to address any questions or concerns promptly.