* 锰钢合金锻造履带滚轮 

* 独特的设计可防止衬套松动

*外径也经过热处理，以获得最大的磨损寿命 

*历经调质，淬火中频，回火等的热处理工艺，保证硬度

* Forged track rollers made of manganese steel alloy

* Unique design prevents bushing loosening

* The outer diameter is also heat treated to obtain maximum wear life

* After heat treatment processes such as quenching and tempering, it's the better to guarantee the hardness .