Item specifics:
Compatible Equipment Make: Kubota
Model: KX71-3 & KX71-3S
Part Type: Bottom Roller
Compatible Equipment Type: Excavator

Description：
1. Shell
Material 50Mn, through hardened HRC 25-28, CASE hardened HRC52-56, hardened thickness 5-8mm.
2. Side cover : QT450-10.
Strength is as follows
Tensile strength σb (MPa): ≥450
Yield strength σ0.2 (MPa):≥310
Hardness:160 ~ 210 hb
3. Roller, 45# carbon steel or 40Cr, quenched HRC25-30, surface quenched HRC52-58, hardened to a depth of 2-3mm.
4. Locking pin, 65Mn or 45 carbon steel, hardened HRC25-28.
5. Bolt, grade 12.9, HRC45-52. 6.
6. Seal: Nitrile rubber. Operating temperature range -20℃ to 110℃.

Features:
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.

PLS NOTE:
1. Please make sure it will fit your machine before purchasing it. If you are not 100% sure this is what you need, please find out your engine model, series number and contact our Customer-service.
2. Communication is the best way to solve the problem. If you have any problems after you receive the package, please contact us in time, before opening a return or case.