... )Bearings Type Min~MaxIdler's Shell Wall ThicknessmmInch163.52 1/2150-3500203 2043.0mm~4.0 mm27632043.0mm~4.5 ... mm3893 1/3204 2053.0mm~4.5 mm41024204 205 206 3053. ... 305,315,375,380,455,465,600,750,950,11506204 108/114190,200,240,250,305,315,375,380,455, ... each idler frames ranges from 900 to 1500 mm Features:1)Steady running, reliable quality and reduce maintenance;2)Less ...