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Model Structure Number of needles Rotation ratio Mass [kg]
SD-28A Weight Type 1 1/4 0.06
SD-28B Weight Type 2 1/4 0.06
SD-38A Weight Type 1 1/4, 1/9 0.10
SD-38B Weight Type 2 1/4, 1/9 0.10
SD-53A Weight Type 1 1/4, 1/5, 1/6, 1/9, 1/12, 1/16, 1/25 0.075
SD-53B Weight Type 2 1/4, 1/5, 1/6, 1/9, 1/12, 1/16, 1/25 0.075
SD-75A Weight Type 1 1/4, 1/5, 1/6, 1/9, 1/12, 1/16, 1/25, 1/36, 1/40, 1/49, 1/64 0.135
SD-75B Weight Type 2 1/4, 1/5, 1/6, 1/9, 1/12, 1/16, 1/25, 1/36, 1/40, 1/49, 1/64 0.135
Model Structure Number of needles Rotation ratio Mass [kg]
SD-28A Weight Type 1 1/4 0.06
SD-28B Weight Type 2 1/4 0.06
SD-38A Weight Type 1 1/4, 1/9 0.10
SD-38B Weight Type 2 1/4, 1/9 0.10
SD-53A Weight Type 1 1/4, 1/5, 1/6, 1/9, 1/12, 1/16, 1/25 0.075
SD-53B Weight Type 2 1/4, 1/5, 1/6, 1/9, 1/12, 1/16, 1/25 0.075
SD-75A Weight Type 1 1/4, 1/5, 1/6, 1/9, 1/12, 1/16, 1/25, 1/36, 1/40, 1/49, 1/64 0.135
SD-75B Weight Type 2 1/4, 1/5, 1/6, 1/9, 1/12, 1/16, 1/25, 1/36, 1/40, 1/49, 1/64 0.135

 

Model A B C E F G H J K L N D Mass [kg]
Std. bore diameter Max. bore diameter
SD-53□-66-□-□□ 66 - - - 24.5 21 17 17 45.5 - 40 10 28 0.22
SD-53□-80-□-□□ 80 - - - 15 35 21 19 50 - 32 15 20 0.28
SD-53□-140-□-□□ 140 66 62 18 16 46 30 28 62 128 40 20 28 0.60
SD-75□-125-□-□□ 125 - - - 20 40 30 25 60 - 40 20 28 0.64
SD-75□-160-□-□□ 160 66 71 18 16 47 30 33 63 129 40 20 28 0.87
SD-75□-180-□-□□ 180 85 80 22 17 51 35 31 68 153 40 20 28 1.07
SD-75□-250-□-□□ 250 107 112 28 22 56 42 35 78 185 55 20 35 2.03
Model Structure indicators Speed ratio Mass [kg]
SD-50 Differential Type - 1/20 0.06
SD-100 Differential Type - 1/25,1/50 0.27

 

Model A B C D E F G H J L Mass [kg]
SD-50-□□ 50 23 20 12 22 5 4 5 M4 28 0.06
SD-100-□□ 100 32 40 20 36 17 5 6 M6 49 0.27