外形尺寸 Boundary dimensions 额定载荷 Load ratings 极限转速 Limiting speeds 轴承代号 Bearing Desig-nations 55 100 21 1.5 0.6 55.8 56.2 12000 19000 7212C 55 100 21 1.5 0.6 53 53.5 11000 18000 7212AC 60 110 22 1.5 0.6 55.8 56.2 12000 19000 7212C 60 110 22 1.5 0.6 53 53.5 11000 18000 7212AC 65 125 24 1.5 0.6 70.2 74.6 10000 17000 7214C 65 125 24 1.5 0.6 66.6 71.1 9000 15000 7214AC 70 130 25 1.5 0.6 72.7 80.2 9500 16000 7215C 70 130 25 1.5 0.6 68.9 76.3 8500 14000 721**C 75 130 25 1.5 0.6 72.7 80.2 9500 16000 7215C 75 130 25 1.5 0.6 68.9 76.3 8500 14000 721**C 80 140 26 2 1 86.5 96.5 9000 15000 7216C 80 140 26 2 1 82.1 91.9 8000 13000 7216AC 85 150 28 2 1 97.4 107.5 8500 14000 7217C 85 150 28 2 1 92.5 102.4 7500 12000 7217AC 90 160 30 2 1 121.9 131.3 8000 13000 7218C 90 160 30 2 1 115.8 124.6 7000 11000 7218AC 95 170 32 2.1 1.1 128.9 145.1 7500 12000 7219C 95 170 32 2.1 1.1 122.5 138.3 6700 10000 7219AC 100 180 34 2.1 1.1 146.2 165.9 7000 11000 7220C 100 180 34 2.1 1.1 138.9 158.2 6700 10000 7220AC 105 190 36 2.1 1.1 164.3 188.2 7000 11000 7221C 105 190 36 2.1 1.1 156.3 179.5 6300 9500 7221AC 110 200 38 2.1 1.1 170.4 202.5 6700 10000 7222C 110 200 38 2.1 1.1 161.8 193 6000 9000 7222AC 120 215 40 2.1 1.1 175.4 218.4 6000 9000 7224C 120 215 40 2.1 1.1 166.3 207.9 5300 8000 7224AC 130 230 40 3 1.1 200.6 258.3 5600 8500 7226C 130 230 40 3 1.1 190.4 246.2 5000 7500 7226AC 140 250 42 3 1.1 223.6 306.6 5000 7500 7228C 140 250 42 3 1.1 212.3 292.2 4500 6700 7228AC 150 270 45 3 1.1 240.9 341.5 4500 6700 7230C 150 270 45 3 1.1 228.7 325.5 4000 6000 7230AC 160 290 48 3 1.1 248.6 365.8 4300 6300 7232C 160 290 48 3 1.1 236.1 348.6 3800 5600 7232AC 170 310 53 4 1.5 300.2 459.2 3800 5600 7234C 170 310 53 4 1.5 285 437.6 3600 5300 7234AC 180 320 52 4 1.5 311.2 490.8 3800 5600 7236C 180 320 52 4 1.5 295.5 467.7 3400 5000 7236AC 190 340 55 4 1.5 321.3 524.8 3400 5000 7238C 190 340 55 4 1.5 305.1 500.1 3200 4800 7238AC 200 360 58 4 1.5 330.9 558.6 3200 4800 7240C 200 360 58 4 1.5 314.2 532.3 3000 4500 7240AC 220 400 65 4 1.5 405.9 730.5 2800 4300 7244C 220 400 65 4 1.5 385.4 696.2 2600 4000 7244AC