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KMT precision nuts with security dowel

kmt10_webPrecision 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.

KMT1

Type 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
 

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