Precision locking nuts KMT are mainly developed for precision bearings, and the dimensions of the nut are adjusted accordingly. Precision locking nuts have three locking pins distributed around the circumference of the nut. The locking pins are pressed against the thread of the shaft with the help of stop screws and, as a result, the resulting pressure friction prevents the nut from turning.
The locking pins and stop screws have the same slope to the shaft as the nut threaded flanks. This slope facilitates mounting in tight spaces. The ends of the pins are processed in the same operation as the nut thread and therefore have a threaded profile. Since the locking pins are not deformed when tightening, the nuts retain their high precision, regardless of how often they are mounted and removed. Neither lock washer nor keyway in the shaft is required.
Art.nr | G-thread | d2 | d1 | d3 | d4 | B | b | h | M | Suitable lock key |
---|---|---|---|---|---|---|---|---|---|---|
KMT 0 | M 10×0.75 | 28 | 21 | 23 | 11 | 14 | 4 | 2 | 24 | HN 25 – 28 |
KMT 1 | M 12×1 | 30 | 23 | 25 | 13 | 14 | 4 | 2 | 27 | HN 30 – 32 |
KMT 2 | M 15×1 | 33 | 26 | 28 | 16 | 16 | 4 | 2 | 30 | HN 30 – 32 |
KMT 3 | M 17×1 | 37 | 29 | 33 | 18 | 18 | 5 | 2 | 34 | HN 34 – 36 |
KMT 4 | M 20×1 | 40 | 32 | 35 | 21 | 18 | 5 | 2 | 36 | HN 40 – 42 |
KMT 5 | M 25×1.5 | 44 | 36 | 39 | 26 | 20 | 5 | 2 | 41 | HN 45 – 50 |
KMT 6 | M 30×1.5 | 49 | 41 | 44 | 32 | 20 | 5 | 2 | 46 | HN 45 – 50 |
KMT 7 | M 35×1.5 | 54 | 46 | 49 | 38 | 22 | 5 | 2 | 50 | HN 52 – 55 |
KMT 8 | M 40×1.5 | 65 | 54 | 59 | 42 | 22 | 6 | 2.5 | 60 | HN 65 – 70 |
KMT 9 | M 45×1.5 | 70 | 60 | 64 | 48 | 22 | 5 | 2.5 | 65 | HN 68 – 75 |
KMT 10 | M 50×1.5 | 75 | 64 | 68 | 52 | 25 | 7 | 3 | 70 | HN 68 – 75 |
KMT 11 | M 55×2 | 85 | 74 | 78 | 58 | 25 | 7 | 2.5 | 80 | HN 80 – 90 |
KMT 12 | M 60×2 | 90 | 78 | 82 | 62 | 26 | 8 | 3.5 | 85 | HN 85 – 92 |
KMT 13 | M 65×2 | 95 | 83 | 87 | 68 | 28 | 8 | 3.5 | 90 | HN 95 – 100 |
KMT 14 | M 70×2 | 100 | 88 | 92 | 72 | 28 | 8 | 3.5 | 95 | HN 95 – 100 |
KMT 15 | M 75×2 | 105 | 93 | 97 | 77 | 28 | 8 | 3.5 | 100 | HN 110 – 115 |
KMT 16 | M 80×2 | 110 | 98 | 100 | 83 | 32 | 8 | 3.5 | – | HN 110 – 115 |
KMT 17 | M 85×2 | 120 | 107 | 110 | 88 | 32 | 10 | 4 | – | HN 120 – 130 |
KMT 18 | M 90×2 | 125 | 112 | 115 | 93 | 32 | 10 | 4 | – | HN 120 – 130 |
KMT 19 | M 95×2 | 130 | 117 | 120 | 98 | 32 | 10 | 4 | – | HN 120 – 130 |
KMT 20 | M 100×2 | 135 | 122 | 125 | 103 | 32 | 10 | 4 | – | HN 135 – 145 |
KMT 22 | M 110×2 | 145 | 132 | 134 | 112 | 32 | 10 | 4 | – | HN 135 – 145 |
KMT 24 | M 120×2 | 155 | 142 | 144 | 122 | 32 | 10 | 4 | – | HN 155 – 165 |
KMT 26 | M 130×2 | 165 | 152 | 154 | 132 | 32 | 12 | 5 | – | HN 155 – 165 |
KMT 28 | M 140×2 | 175 | 162 | 164 | 142 | 32 | 14 | 6 | – | HN 180 – 195 |
KMT 30 | M 150×2 | 185 | 172 | 174 | 152 | 32 | 14 | 6 | – | HN 180 – 195 |
KMT 32 | M 160×3 | 195 | 182 | 184 | 162 | 32 | 14 | 6 | – | HN 180 – 195 |
KMT 34 | M 170×3 | 205 | 192 | 192 | 172 | 32 | 14 | 6 | – | HN 205 – 220 |
KMT 36 | M 180×3 | 215 | 202 | 204 | 182 | 32 | 16 | 7 | – | HN 205 – 220 |
KMT 38 | M 190×3 | 225 | 212 | 214 | 192 | 32 | 16 | 7 | – | HN 230 – 245 |
KMT 40 | M 200×3 | 235 | 222 | 224 | 202 | 32 | 18 | 8 | – | HN 230 – 245 |