Next to the wheelflange, completely changed the original double chain cost is high, easy to take off the chain of defects.
下轮改为凸缘轮，彻底改变了原双链轮成本高，易脱链的缺陷。
2
The wheelflange wear is caused by the flange action of the wheel and rail, whereas the double-groove wear on tread may be mainly caused by the break shoe.