Application:
Will fit Kubota excavator KX057-4.
This roller will not fit 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: HRC52-60, Deepth: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℃.
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