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Drill Tube - STS System OD Thread
 
The boring bars are made from heat treated alloy steel for maximum torsion resistance and rigidity; centerless ground to ISO h8 and threaded to fit standard metric drills.
 
Drill Tube - STS System OD Thread Schematic

Please specify length ‘L’ when ordering. ‘S’ refers to thread pitch.

Drilling Range (mm) Unitac Tube D (mm) d (mm) a (mm) E (mm) F (mm) S (mm)
7.76-8.50 UBM-071 7.1 4.7 22.5 5.8 - 6
8.51-9.25 UBM-077 7.7 5 22.5 6.4 - 6
9.26-9.89 UBM-083 8.3 5.3 22.5 6.9 - 6
9.90-10.89 UBM-090 9 5.5 22.5 7.6 - 6
10.90-11.89 UBM-100 10 6.5 22.5 8.5 - 6
11.90-12.89 UBM-110 11 7 22.5 9.5 - 6
12.90-14.39 UBM-120 12 8 22.5 10.5 - 6
14.40-15.39 UBM-130 13 8.5 22.5 11.2 - 6
14.50-15.00 UB12-1 12 8 23 9.9 11.5 6
15.01-15.50 UB12-2 12 8 23 10.2 11.8 6
15.51-16.00 UB13-1 13 8.5 23 10.8 12.4 6
16.01-16.50 UB13-2 13 8.5 23 11.1 12.7 6
16.51-17.25 UB14-1 14 9 23 11.8 13.4 6
17.26-18.00 UB14-2 14 9 23 12.1 13.7 6
18.01-19.00 UB15 15 10 23 12.8 14.4 6
19.01-19.99 UB16.5 16.5 11 23 13.8 15.4 6
20.00-21.99 UB18 18 12 26 14.5 16.5 10
22.00-24.99 UB20 20 13 26 16 19 10
25.00-26.99 UB22 22 14 26 17 20 10
27.00-29.99 UB24 24 15.5 26 19 22 10
30.00-31.99 UB26 26 18 26 21 24 10
32.00-33.99 UB28 28 19 26 23 26 10
34.00-36.99 UB30 30 20 41 24 27 20
37.00-39.99 UB33 33 23 41 27 30 20
40.00 - 43.99 UB36 36 25.5 41 30 33 20
44.00 - 46.99 UB39 39 28 41 34 37 20
47.00 - 51.99 UB43 43 31 41 37 41 20
52.00 - 56.99 UB47 47 35 41 40 44 20
57.00 - 60.99 UB51 51 39 41 45 49 20
61.00 - 67.99 UB56 56 43 41 49 53 20
68.00 - 74.99 UB62 62 48 41 54 59 20
75.00 - 80.99 UB68 68 53 71 60 65 40
81.00 - 90.99 UB75 75 59 71 66 71 40
91.00 - 98.99 UB82 82 66 71 74 79 40
99.00 - 110.99 UB94 94 78 71 85 90 40
111.00 - 122.99 UB106 106 90 71 97 102 40
123.00 - 134.99 UB118 118 92 71 109 114 40
135.00 - 148.99 UB130 130 104 71 121 126 40
149.00 - 161.99 UB142 142 116 71 134 139 40
162.00 - 173.99 UB154 154 128 86 145 151 56
174.00-185.99 UB166 166 140 86 157 163 56
186.00-197.99 UB178 178 152 86 169 175 56
 
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