Product Specifications
Product Type: Bottom Roller
Color: Black
Material: 50 MnB Steel; Iron
Surface Hardness: 52-60 HRC
Deepth:5mm-10mm
Finish: Smooth
Technique: Forging and Casting
Part Number: RD118-21700, RD11821700, RD148-21700, RD14821700
Fitment Type: Direct Replacement


Application
for Kubota excavator model KX 040-4, KX 121-3, KX 121-3S, KX 121-3ST


OE Number/Replace Part Number
RD118-21700, RD11821700, RD148-21700, RD14821700


Package included
1* Bottom Roller
(Showing as the picture)
*No instruction included.


Material
>> Housing
Made of 50Mn.
Quenched and tempered 25-28 HRC , carburised 52-56 HRC, 5-8 mm thickness.
>> Side panel
Made of QT450-10.
Yield tensile strength σb (MPa): ≥450
Flexural strength σ0.2 (MPa): ≥310
Hardness:160-210 HB
>> Roller
Made of 45# C steel or 40Cr
Hardened 25-30 HRC, surface quenched 52-58 HRC, 2-3mm hardening depth.
>> Security pin
Made of 65Mn or 45 C steel, 25-28 HRC hardness.
>> Bolt
Quality 12.9, 45-52.6 HRC.
>> Seal
Made of nitrile rubber.
Operational temperature: -20℃ to 110℃.


Note
>> Please refer to the compatibility table to ascertain whether this part is suitable for your own vehicle, matching in year, make and model.
>> Please feel free to contact us for whatever we can help.