BRECO同步带節距公差BRECO同步带轮外徑節距允許偏差任意兩相鄰齒間90º弧內約總允差≤25.40＞25.40~101.60＞101.60~177.85＞177.85~204.81＞304.80~608080＞508.000.030.030.030.030.030.030.030.050.080.100.130.150.180.20BRECOFLEX同步带帶***擋邊尺寸同步带轮節距代******小擋邊高度k擋邊厚度tMXLXXLXLLHXHXXH0.50.81.01.52.04.86.10.5-1.00.5-1.01.0-1.51.0-1.51.5-2.51.0-5.05.0-6.5)