PACKAGE INCLUDES:
1x Track Bottom Roller

FITMENT:
Compatible with Kubota excavator models KX057-4, KX161-3, KX161-3S, KX161-3ST, U45S, U45ST, U55 and U55-4.
For KUBOTA KX057-4;
For KUBOTA KX161-3 ;
For KUBOTA KX161-3S ;
For KUBOTA KX161-3ST;
For KUBOTA U45S;
For KUBOTA U45ST;
For KUBOTA U55;
For KUBOTA U55-4;
Does not fit KX057-5 or KX161-2.

SPECIFICATIONS:
Package Dimensions：5.51"X5.51"X8.26";
Material: 50 MnB Steel
Color:Black
Surface Hardness: HRC52-60, Depth: 5mm-10mm
Finish:Smooth
Lock pin 65 Mn or 45 carbon steel, hardness HRC 25-28.
Bolts, grade 12.9, HRC 45-52.
Seal: nitrile rubber. Operating temperature range-20℃ to 110℃.

Side cover: QT 450-10, strength as follows: tensile strength ob (MPa): 2450 yield strength 00.2 (MPa): 2310 hardness: 160 ~ 210 hb.
Roller: 45 # carbon steel or 40 Cr.
Quenching of HRC25-30 and surface quenching of HRC 52-58.
Hardening depth of 2-3mm.

Note: Please confirm the item if it matches your need before you purchase.

DESCRIPITION:
1.This bottom roller is a durable undercarriage replacement part for your excavator.
2.Our rollers utilize special high strength-hardened steel and quality seal groups that provide excellent lubricating oil retention.
3.Sealed bearings stop dirt, mud, and grime from penetrating inner components.
4.It was designed and manufactured to exact OEM specifications using a high-quality, high-strength steel.
5.It will provide long-lasting and dependable performance even if you operate in the most extreme conditions.