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USER GUIDE
REAMERS Reamer Manufacturing Tolerances Reamer Manufacturing Tolerances DIN 1420

Nominal Diameter of
Reamer D1 in mm
tolerance range
C11
B9
C9
C8
B11
B10
A9
Over Up to Admissible maximum and minimum reamer dimensions of nominal diameter d1 in µm for drilling
C10
B8
A11
1 3 +291 +321 +151 +161 +174 +191 + 71 + 81 + 94 +111
+282 +300 +146 +152 +160 +170 + 66 + 72 + 80 + 90
3 6 +295 +333 +155 +165 +180 +203 + 85 + 95 +110 +133
+284 +306 +148 +154 +163 +176 + 78 + 84 + 93 +106
6 10 +310 +356 +168 +180 +199 +226 + 98 +110 +129 +156
+297 +324 +160 +167 +178 +194 + 90 + 97 +108 +124
10 18 +326 +383 +172 +186 +209 +243 +117 +131 +154 +188
+310 +344 +162 +170 +184 +204 +107 +115 +129 +149
18 30 +344 +410 +188 +204 +231 +270 +138 +154 +181 +220
+325 +364 +176 +185 +201 +224 +126 +135 +151 +174
30 40 +362 +446 +203 +222 +255 +206 +153 +172 +205 +256
+340 +390 +189 +200 +220 +250 +139 +150 +170 +200
40 50 +372 +456 +213 +232 +265 +316 +163 +182 +215 +266
+350 +400 +199 +210 +230 +260 +149 +160 +180 +210
50 65 +402 +501 +229 +252 +292 +351 +179 +202 +242 +301
+376 +434 +212 +226 +250 +284 +162 +176 +200 +234
65 80 +422 +521 +239 +262 +302 +361 +189 +212 +252 +311
+396 +454 +222 +236 +260 +294 +172 +186 +210 +244
80 100 +453 +567 +265 +293 +339 +407 +215 +243 +289 +357
+422 +490 +246 +262 +290 +330 +196 +212 +240 +280
100 120 +483 +597 +285 +313 +359 +427 +225 +253 +299 +367
+452 +520 +266 +282 +310 +350 +206 +222 +250 +290
120 140 +545 +672 +313 +345 +396 +472 +253 +285 +336 +412
+510 +584 +290 +310 +340 +384 +230 +250 +280 +324
140 160 +605 +732 +333 +365 +416 +492 +263 +295 +346 +422
+570 +644 +310 +330 +360 +404 +240 +260 +290 +334
160 180 +665 +792 +363 +395 +446 +522 +283 +315 +366 +442
+630 +704 +340 +360 +390 +434 +260 +280 +310 +354
Over Up to D8 D9 D10 D11 E7 E8 E9 F6 F7 F8 F9 G6 G7
1 3 + 31 + 41 + 54 + 71 + 22 + 25 + 35 + 11 + 14 + 17 + 27 + 7 + 10
+ 26 + 32 + 40 + 50 + 18 + 20 + 26 + 8 + 10 + 12 + 18 + 4 + 6
3 6 + 45 + 55 + 70 + 93 + 30 + 35 + 45 + 16 + 20 + 25 + 35 + 10 + 14
+ 38 + 44 + 53 + 66 + 25 + 28 + 34 + 13 + 15 + 18 + 24 + 7 + 9
6 10 + 58 + 70 + 89 +116 + 37 + 43 + 55 + 20 + 25 + 31 + 43 + 12 + 17
+ 50 + 57 + 68 + 84 + 31 + 35 + 42 + 16 + 19 + 23 + 30 + 8 + 11
10 18 + 72 + 86 +109 +143 + 47 + 54 + 68 + 25 + 31 + 38 + 52 + 15 + 21
+ 62 + 70 + 84 +104 + 40 + 44 + 52 + 21 + 24 + 28 + 36 + 11 + 14
18 30 + 93 +109 +136 +175 + 57 + 68 + 84 + 31 + 37 + 48 + 64 + 18 + 24
+ 81 + 90 +106 +129 + 49 + 56 + 65 + 26 + 29 + 36 + 45 + 13 + 16
30 50 +113 +132 +165 +216 + 71 + 83 + 102 + 38 + 46 + 58 + 77 + 22 + 30
+ 99 +110 +130 +160 + 62 + 69 + 80 + 32 + 37 + 44 + 55 + 16 + 21
50 80 +139 +162 +202 +261 + 5 + 99 +122 + 46 + 55 + 69 + 92 + 26 + 35
+122 +136 +160 +194 + 74 + 82 + 96 + 39 + 44 + 52 + 66 + 19 + 24
80 120 +165 +193 +239 +307 +101 +117 +145 + 54 + 65 + 81 +109 + 30 + 41
+146 +162 +190 +230 + 88 + 98 +114 + 46 + 52 + 62 + 78 + 22 + 28
120 180 +198 +230 +281 +357 +119 +138 +170 + 64 + 77 + 96 + 128 + 35 + 48
+175 +195 +225 +269 +105 +115 +135 + 55 + 63 + 73 + 93 + 26 + 34

ISCAR
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