6-2. Shape and dimensions of O-ring mounting groove
(For fixing G series)
(JIS B 2401)
| unit:mm | |||||||||||
| JIS nominal number | O-ring dimensions | Groove dimensions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Thickness W | Inner diameter do | d dimension | D dimension | G dimension@(tolerance+0.025) | H dimension | R dimension | |||||
| Size | tolerance | Size | tolerance | No backup ring | One-sided backup ring | Double-sided backup ring | H}0.05 | Maximum value | |||
| G25 G30 G35 G40 G45 G50 G55 G60 G65 G70 G75 G80 G85 G90 G95 G100 G105 G110 G115 G120 G125 G130 G135 G140 G145 |
3.1}0.1 | 24.4 29.4 34.4 39.4 44.4 49.4 54.4 59.4 64.4 69.4 74.4 79.4 84.4 89.4 94.4 99.4 104.4 109.4 114.4 119.4 124.4 129.4 134.4 139.4 144.4 |
25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 |
0 -0.10 |
30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 |
+0.10 0 |
4.1 | 5.6 | 7.3 | 2.4 | 0.7 |
| G150 G155 G160 G165 G170 G175 G180 G185 G190 G195 G200 G210 G220 G230 G240 G250 G260 G270 G280 G290 G300 |
5.7}0.13 | 149.3 154.3 159.3 164.3 169.3 174.3 179.3 184.3 189.3 194.3 199.3 209.3 219.3 229.3 239.3 249.3 259.3 269.3 279.3 289.3 299.3 |
150 155 160 165 170 175 180 185 190 195 200 210 220 230 240 250 260 270 280 290 300 |
0 -0.10 |
160 165 170 175 180 185 190 195 200 205 210 220 230 240 250 260 270 280 290 300 310 |
+0.10 0 |
7.5 | 9.0 | 11.5 | 4.6 | 0.8 |
|
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| Reference: "NOK O-ring" (NOK CORPORATION ed. Cat. No.050 E 2-98) NOK E O-ring, page 19 JIS B 2401 G series (for fixing). | |||||||||||