1,Air chamber:single and double brake chamber. 2, pole long:207 and ... parts similar like brake drum,brake lining,brake air chamber,slack adjust, adjuster arm,kingpin, fifth ... cantilever bogie system all the time. 1,Air chamber: single and double brake chamber. 2, pole long:207 and 255mm ... introduction hardening, therefor, it can provide superior anti-fatigue and wearable capability. In this situation, ...