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日本SAKAGAMI阪上骨架防尘圈SCB用来防止灰尘从外部进入并保护密封件和轴承。SCB防尘圈是金属环烘烤型，压配合到凹槽中。特别是，它可以在灰尘，泥土和沙子以及雨水的条件下使用。
| 标准型号 | 密封件的公称尺寸及安装尺寸 (単位：mm） | 挡圈 | ||||
| （RN 807） | d*D*H/G | C | B | D1 | m | |
| SCB-8 | 8*18*8/5 | 14 | 3 | 18.8±0.1 | 0.7 | DSP-8 |
| SCB-10 | 10*20*8/5 | 16 | 3 | 21±0.1 | 0.7 | DSP-10 |
| SCB-0012001N807 | 12*22*8/5 | 17 | 3 | 23±0.1 | 0.7 | DSP-12 |
| SCB-12.5 | 12.5*23*8/5 | 19 | 3 | 24±0.1 | 0.7 | DSP-12.5 |
| SCB-14 | 14*24*8/5 | 19 | 3 | 25±0.1 | 0.7 | DSP-14 |
| SCB-15 | 15*25*8/5 | 21 | 3 | 26±0.1 | 0.7 | DSP-15 |
| SCB-16 | 16*26*8/5 | 21 | 3 | 27±0.1 | 0.7 | DSP-16 |
| SCB-18 | 18*30*9/6 | 24 | 3 | 31.5±0.1 | 0.8 | DSP-18 |
| SCB-20 | 20*32*9/6 | 26 | 3 | 33.5±0.1 | 0.8 | DSP-20 |
| SCB-0022001N807 | 22*32*9/6 | 28 | 3 | 33.5±0.1 | 0.8 | DSP-20 |
| SCB-22 | 22*34*9/6 | 28 | 3 | 35.5±0.1 | 0.8 | DSP-22 |
| SCB-22.4 | 22.4*34.4*9/6 | 29.4 | 3 | 35.9±0.1 | 0.8 | DSP-22.4 |
| SCB-25 | 25*37*9/6 | 31 | 3 | 38.5±0.1 | 0.8 | DSP-25 |
| SCB-28 | 28*40*9/6 | 34 | 3 | 41.5±0.1 | 0.8 | DSP-28 |
| SCB-30 | 30*42*9/6 | 36 | 3 | 43.5±0.1 | 0.8 | DSP-30 |
| SCB-0030001N807 | 30*45*9/6 | 37 | 3 | 46.5±0.1 | ||
| SCB-31.5 | 31.5*44*10/7 | 39 | 3 | 45.5±0.1 | 0.8 | DSP-31.5 |
| SCB-32 | 32*44*10/7 | 39 | 3 | 45.5±0.1 | 0.8 | DSP-32 |
| SCB-0034001N807 | 34*46*10/7 | 41 | 3 | 47.5±0.1 | 0.8 | DSP-34 |
| SCB-35 | 35*47*10/7 | 41 | 3 | 49±0.15 | 1 | DSP-35 |
| SCB-35.5 | 35.5*47.5*10/7 | 42.5 | 3 | 49.5±0.15 | 1 | DSP-35.5 |
| SCB-40 | 40*52*10/7 | 46 | 3 | 54±0.15 | 1 | DSP-40 |
| SCB-45 | 45*57*10/7 | 51 | 3 | 59±0.15 | 1 | DSP-45 |
| SCB-50 | 50*62*10/7 | 56 | 3 | 64±0.15 | 1 | DSP-50 |
| SCB-55 | 55*69*11/8 | 62 | 4 | 71.5±0.15 | 1.1 | DSP-55 |
| SCB-56 | 56*70*11/8 | 64 | 4 | 72.5±0.15 | 1.1 | DSP-56 |
| SCB-60 | 60*74*11/8 | 67 | 4 | 76.5±0.15 | 1.1 | DSP-60 |
| SCB-63 | 63*77*11/8 | 71 | 4 | 79.5±0.15 | 1.1 | DSP-63 |
| SCB-65 | 65*79*11/8 | 72 | 4 | 81.5±0.15 | 1.1 | DSP-65 |
| SCB-70 | 70*84*11/8 | 77 | 4 | 86.5±0.15 | 1.1 | DSP-70 |
| SCB-71 | 71*85*11/8 | 79 | 4 | 87.5±0.15 | 1.1 | DSP-71 |
| SCB-75 | 75*89*11/8 | 82 | 4 | 91.5±0.15 | 1.1 | DSP-75 |
| SCB-0078001N807 | 78*92*11/8 | 86 | 4 | 94.5±0.15 | ||
| SCB-80 | 80*94*11/8 | 87 | 4 | 96.5±0.15 | 1.1 | DSP-80 |
| SCB-85 | 85*99*11/8 | 92 | 4 | 101.5±0.15 | 1.1 | DSP-85 |
| SCB-90 | 90*104*11/8 | 97 | 4 | 106.5±0.15 | 1.1 | DSP-90 |
| SCB-95 | 95*109*11/8 | 102 | 4 | 111.5±0.15 | 1.1 | DSP-95 |
| SCB-0098001N807 | 98*112*11/8 | 106 | 4 | 114.5±0.15 | 1.1 | DSP-98 |
| SCB-100 | 100*114*11/8 | 107 | 4 | 116.5±0.15 | 1.1 | DSP-100 |
| SCB-105A | 105*121*12/9 | 113 | 5 | 125±0.15 | 1.3 | DSP-105A |
| SCB-106 | 106*120*11/8 | 114 | 5 | 124±0.15 | 1.3 | DSP-106 |
| SCB-110 | 110*126*12/9 | 118 | 5 | 130±0.15 | 1.3 | DSP-110 |
| SCB-112 | 112*128*12/9 | 121 | 5 | 132±0.15 | 1.3 | DSP-112 |
| SCB-115 | 115*131*12/9 | 123 | 5 | 135±0.15 | 1.3 | DSP-115 |
| SCB-118 | 118*134*12/9 | 127 | 5 | 138±0.15 | 1.3 | DSP-118 |
| SCB-120 | 120*136*12/9 | 128 | 5 | 140±0.15 | 1.3 | DSP-120 |
| SCB-125 | 125*141*12/9 | 133 | 5 | 145±0.15 | 1.3 | DSP-125 |
| SCB-130 | 130*146*12/9 | 138 | 5 | 150±0.15 | 1.3 | DSP-130 |
| SCB-132 | 132*148*12/9 | 141 | 5 | 152±0.2 | 1.3 | DSP-132 |
| SCB-135 | 135*155*14/10 | 145 | 5 | 159±0.2 | 1.3 | DSP-135 |
| SCB-140 | 140*160*14/10 | 150 | 5 | 164±0.2 | 1.3 | DSP-140 |
| SCB-145 | 145*165*14/10 | 155 | 5 | 169±0.2 | 1.3 | DSP-145 |
| SCB-150 | 150*170*14/10 | 160 | 6 | 174±0.2 | 1.3 | DSP-150 |
| SCB-160 | 160*180*14/10 | 170 | 6 | 184±0.2 | 1.3 | DSP-160 |
| SCB-170 | 170*190*14/10 | 180 | 6 | 194±0.2 | 1.3 | DSP-170 |
| SCB-175 | 175*195*14/10 | 185 | 6 | 199±0.2 | 1.3 | DSP-175 |
| SCB-180 | 180*200*14/10 | 190 | 6 | 204±0.2 | 1.3 | DSP-180 |
| SCB-190A | 190*215*16/12 | 202.5 | 6 | 219.5±0.2 | 1.6 | DSP-190A |
| SCB-200A | 200*225*16/12 | 212.5 | 6 | 229.5±0.2 | 1.6 | DSP-200A |
| SCB-250 | 250*274*16/12 | 262 | 6 | 278.5±0.2 | 1.6 | DSP-250 |