Miniature Ball Bearings - Inch Series | Metric Series |
Dimension (inch) | Designation | Load Rating (N) | Limiting Speed(rpm) | Mass (g) | |||||||||||||||
d | D | Width | Flanged Dia | Flanged Width | Standard | Flanged | |||||||||||||
B | B1 | D1 | D2 | C1 | C2 | Open | ZZ | 2RS | Open | ZZ | 2RS | Cr | Cor | Grease | Oil | Std | Flanged | ||
0.0781 | 0.2500 | 0.0937 | 0.1406 | R1-4 | R1-4-ZZ | 270 | 90 | 67000 | 80000 | 0.40 | 0.46 | ||||||||
0.0937 | 0.1875 | 0.0625 | 0.0937 | 0.2340 | 0.2340 | 0.0180 | 0.0310 | R133 | R133-ZZ | FR133 | FR133-ZZ | 170 | 60 | 80000 | 95000 | 0.11 | 0.15 | ||
0.3125 | 0.1094 | 0.1406 | 0.3590 | 0.3590 | 0.0230 | 0.0310 | R1-5 | R1-5-ZZ | FR1-5 | FR1-5-ZZ | 545 | 172 | 60000 | 71000 | 0.60 | 0.67 | |||
0.1250 | 0.2500 | 0.0937 | 0.1094 | 0.2960 | 0.2960 | 0.0230 | 0.0310 | R144 | R144-ZZ | FR144 | FR144-ZZ | 311 | 109 | 67000 | 80000 | 0.27 | 0.33 | ||
0.3125 | 0.1094 | 0.1406 | 0.3590 | 0.3590 | 0.0230 | 0.0310 | R2-5 | R2-5-ZZ | R2-5-2RS | FR2-5 | FR2-5-ZZ | 530 | 170 | 60000 | 67000 | 0.50 | 0.57 | ||
0.3750 | 0.1094 | 0.1406 | 0.4220 | 0.4220 | 0.0230 | 0.0310 | R2-6 | R2-6-ZZ | R2-6-2RS | FR2-6 | FR2-6-ZZ | 643 | 228 | 53000 | 63000 | 0.96 | 1.05 | ||
0.3750 | 0.1562 | 0.1562 | 0.4400 | 0.4400 | 0.0300 | 0.0300 | R2 | R2-ZZ | R2-2RS | FR2 | FR2-ZZ | FR2-2RS | 643 | 228 | 56000 | 67000 | 1.04 | 1.20 | |
0.5000 | 0.1719 | 0.1719 | R2A | R2A-ZZ | R2A-2RS | 1138 | 391 | 53000 | 63000 | 3.30 | - | ||||||||
0.1562 | 0.3125 | 0.1094 | 0.1250 | 0.3590 | 0.3590 | 0.0230 | 0.0360 | R155 | R155-ZZ | FR155 | FR155-ZZ | 395 | 140 | 53000 | 63000 | 0.51 | 0.58 | ||
0.1875 | 0.3125 | 0.1094 | 0.1250 | 0.3590 | 0.3590 | 0.0230 | 0.0360 | R156 | R156-ZZ | R156-2RS | FR156 | FR156-ZZ | FR156-2RS | 278 | 131 | 53000 | 63000 | 0.40 | 0.47 |
0.3750 | 0.1250 | 0.1250 | 0.4220 | 0.4220 | 0.0230 | 0.0310 | R166 | R166-ZZ | R166-2RS | FR166 | FR166-ZZ | FR166-2RS | 711 | 270 | 50000 | 60000 | 0.81 | 0.90 | |
0.5000 | 0.1562 | 0.1960 | 0.5650 | 0.5650 | 0.0420 | 0.0420 | R3 | R3-ZZ | R3-2RS | FR3 | FR3-ZZ | FR3-2RS | 1074 | 423 | 43000 | 53000 | 2.21 | 2.50 | |
0.6250 | 0.1960 | 0.1960 | R3A | R3A-ZZ | R3A-2RS | 1881 | 680 | 38000 | 45000 | 4.75 | - | ||||||||
0.2500 | 0.3750 | 0.1250 | 0.1250 | 0.4220 | 0.4220 | 0.0230 | 0.0360 | R168 | R168-ZZ | R168-2RS | FR168 | FR168-ZZ | 373 | 172 | 48000 | 56000 | 0.57 | 0.66 | |
0.5000 | 0.1250 | 0.1875 | 0.5470 | 0.5470 | 0.0230 | 0.0450 | R188 | R188-ZZ | R188-2RS | FR188 | FR188-ZZ | FR188-2RS | 1083 | 438 | 40000 | 50000 | 1.60 | 1.71 | |
0.6250 | 0.1960 | 0.1960 | 0.6900 | 0.6900 | 0.0420 | 0.0633 | R4 | R4-ZZ | R4-2RS | FR4 | FR4-ZZ | FR4-2RS | 1472 | 603 | 38000 | 45000 | 4.46 | 4.82 | |
0.7500 | 0.2188 | 0.2812 | R4A | R4A-ZZ | R4A-2RS | 2239 | 911 | 36000 | 43000 | 7.48 | - | ||||||||
0.3125 | 0.5000 | 0.1562 | 0.1562 | 0.5470 | 0.5470 | 0.0310 | 0.0310 | R1810 | R1810-ZZ | FR1810 | FR1810-ZZ | 530 | 260 | 40000 | 48000 | 1.39 | 1.54 | ||
0.3750 | 0.8750 | 0.2188 | 0.2812 | 0.9690 | 0.9690 | 0.0620 | 0.0620 | R6 | R6-ZZ | R6-2RS | FR6 | FR6-ZZ | FR6-2RS | 3338 | 1416 | 32000 | 38000 | 9.02 | 9.71 |