起重機用減速機是在起重機用中硬齒面減速機的基礎上研制開發的。QY型系列減速器包括QYS型(三支點)和QYD型(底座式)兩個系列起重機用硬齒面減速器。它有三級、四級和三四級結合型三種. 起重機用減速機采用鋼板焊接，箱體經退火去應力處理，齒輪采用優質低碳合金鋼，齒面經滲碳淬火處理，并經磨削加工，產品品質穩定，性能可靠。
起重機用減速機的工作條件
1） 齒輪圓周速度不大于20m/s；
2） 高速軸轉速不大于1500r/min；
3） 工作環境溫度為－40～+45℃；
4） 可正反兩向運轉。
Crane with reducer is machine of decelerate of hard tooth flank in the crane used on the basis of the research and development. QY series reducer including QYS model (three pivot) and type QYD (base) two series crane with hardened tooth surface reducer. It has three level 3 and level 4 and level 4 combination type 3 kinds. Crane with reducer adopts steel plate welded, box body after annealing to deal with the stress, the gear is made of high quality low carbon alloy steel, tooth surface after carburizing and quenching treatment, and the grinding processing, product quality is stable and reliable performance.
Crane with reducer working conditions
1) gear circumferential velocity is not more than 20 m/s;
2) high speed spindle speed is not more than 1500 r/min.
3) the work environment temperature - 40 ~ + 45 ℃;
4) can be positive and negative two to operation.
