Charts

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Diamond Drill Bits Speed Chart

DiamondDrillBitsDrillSpeedsChart.pdf

Recommended Drill Speeds

DiamondSure Diamond Drill Bits Recommended Drill Speed (rpm)
Material                Bit Size–> 1/2″ 1″ 2″ 3″ 4″
Fiberglass 1200 700 350 250 175
Glass, Ceramic & China 800 500 250 160 125
Limestone & Marble Stone 600 450 225 130 100
Ceramic Wall Tile 600 450 225 130 100
Porcelain Wall Tile 500 375 180 125 90
Porcelain Floor Tile 500 375 180 125 90
Granite Stone 400 300 150 100 75

(Not for use on Concrete or Masonry, or with Hammer Drills)

SPEED KILLS:  Reduced drill speeds, low drill pressure and increased use of water lubrication will extend drill bit life considerably.

Since all meterials vary in hardness and abrasiveness, it is impossible to determine exact drill speeds.  Additionally, as discussed below, lubrication and drill pressure must also be considered when determining the proper drill speed.  A faster drill speed or increased pressure may reduce the cutting time slightly, but it will also increase the friction significantly and heat up the bit, reducing the bit life considerably and increasing the risk of heat fractures and material breakage.  If used proplerly, a diamond drill bit should never be more than warm when touched after use.  If a drill bit develops yellow, brown, blue or black ‘burn marks’ around the tip, it is an indication of extreme heat and that the drill speed being used is too fast or the amount of pressure on the drill is too great.

Torque Conversion Chart English to Metric

TorqueConvEnglishMetric.pdf

Foot Pounds (ft. lbs.) Newton Meters (N-m) Foot Pounds (ft. lbs.) Newton Meters (N-m) Foot Pounds (ft. lbs.) Newton Meters (N-m) Foot Pounds (ft. lbs.) Newton Meters (N-m) Foot Pounds (ft. lbs.) Newton Meters (N-m)
1 = 1.3 32 = 43.4 63 = 85.4 94 = 127.4 125 = 169.5
2 = 2.7 33 = 44.7 64 = 86.8 95 = 128.8 126 = 170.8
3 = 4.1 34 = 46.1 65 = 88.1 96 = 130.2 127 = 172.2
4 = 5.4 35 = 47.4 66 = 89.5 97 = 131.5 128 = 173.5
5 = 6.8 36 = 48.8 67 = 90.8 98 = 132.9 129 = 174.9
6 = 8.1 37 = 50.7 68 = 92.2 99 = 134.2 130 = 176.2
7 = 9.5 38 = 51.5 69 = 93.6 100 = 135.6 131 = 177.6
8 = 10.8 39 = 52.9 70 = 94.9 101 = 136.9 132 = 179
9 = 12.2 40 = 54.2 71 = 96.3 102 = 138.3 133 = 180.3
10 = 13.6 41 = 55.6 72 = 97.6 103 = 139.6 134 = 181.7
11 = 14.9 42 = 56.9 73 = 99 104 = 141 135 = 183
12 = 16.3 43 = 58.3 74 = 100.3 105 = 142.4 136 = 184.4
13 = 17.6 44 = 59.7 75 = 101.7 106 = 143.7 137 = 185.7
14 = 18.9 45 = 61 76 = 103 107 = 145.1 138 = 187.1
15 = 20.3 46 = 62.4 77 = 104.4 108 = 146.4 139 = 188.5
16 = 21.7 47 = 63.7 78 = 105.8 109 = 147.8 140 = 189.8
17 = 23 48 = 65.1 79 = 107.1 110 = 149.1 141 = 191.2
18 = 24.4 49 = 66.4 80 = 108.5 111 = 150.5 142 = 192.5
19 = 25.8 50 = 67.8 81 = 109.8 112 = 151.8 143 = 193.9
20 = 27.1 51 = 69.2 82 = 111.2 113 = 153.2 144 = 195.2
21 = 28.5 52 = 70.5 83 = 112.5 114 = 154.6 145 = 196.6
22 = 29.8 53 = 71.9 84 = 113.9 115 = 155.9 146 = 198
23 = 31.2 54 = 73.2 85 = 115.2 116 = 157.3 147 = 199.3
24 = 32.5 55 = 74.6 86 = 116.6 117 = 158.6 148 = 200.7
25 = 33.9 56 = 75.9 87 = 118 118 = 160 149 = 202
26 = 35.2 57 = 77.3 88 = 119.3 119 = 161.3 150 = 203.4
27 = 36.6 58 = 78.6 89 = 120.7 120 = 162.7 151 = 204.7
28 = 38 59 = 80 90 = 122 121 = 164 152 = 206.1
29 = 39.3 60 = 81.4 91 = 123.4 122 = 165.4 153 = 207.4
30 = 40.7 61 = 82.7 92 = 124.7 123 = 166.8 154 = 208.8
31 = 42 62 = 84.1 93 = 126.1 124 = 168.1 155 = 210.2

Tap Holder Reference Chart

TapHolderReferenceChart.pdf

Tap Holder Reference Chart

Tap Size Decimal Equivalent PITCH (threads per in.) MM Per Thread Threads per mm
1.0mm .0393 101.60 .25 4.000
1.1mm .0433 101.60 .25 4.000
1.2 mm .0472 101.60 .25 4.000
1.4 mm .0551 84.66 .30 3.333
#0 .0600 80
1/16″ .0625 64
1.7 mm .0669 72.56 .35 2.857
1.8 mm .0708 72.56 .35 2.857
#1 .0730 64
#1 .0730 72
2.0 mm .0787 63.50 .40 2.500
#2 .0860 64
2.3 mm .0905 63.50 .40 2.500
3/32″ .0625 64
#3 .0990 48
#3 ,0990 56
2.6 mm .1023 56.43 .45 2.222
1/8″ .1250 40
#4 .1120 32
#4 .1120 36
#4 .1120 40
#4 .1120 48
3.0 mm .1181 50.80 .50 2.000
#5 .1250 40
#5 .1250 44
3.5 mm .1378 42.33 .60 1.666
#6 .1380 32
#6 .1380 40
5/32″ .1562 32
5/32″ .1562 36
4.0 mm .1574 36.28 .70 1.428
#8 .1640 32
#8 .1640 36
#8 .1640 40
4.5 mm .1771 33.86 .75 1.333
3/16″ .1870 24
3/16″ .1870 32
#10 .1900 24
#10 .1900 32
#10 .1900 30
5.0 mm .1980 31.75 .80 1.250
#12 .2160 24
#12 .2160 28
#12 .2160 32
7/32″ .2188 24
7/32″ .2188 32
6.0 mm .2326 25.4 1.00 1.00
#14 .2420 20
#14 .2420 24
1/4″ .2500 20
1/4″ .2500 24
1/4″ .2500 28
1/4″ ,2500 32
7.0 mm .2755 25.4 1.00 1.00
5/16″ .3120 18
5/16″ .3120 24
8.0 mm .3149 20.32 1.25 .800
9.0 mm .3543 20.32 1.25 .800
3/8″ .3750 16
3/8″ .3750 24
10.0 mm .3937 16.93 1.50 .666
11.0 mm .4330 16.93 1.50 .666
7/16″ .4370 14
7/16″ .4370 20
12.0 mm .4724 14.51 1.75 .571
1/2″ .5000 13
1/2″ .5000 20
14.0 mm .5510 12.70 2.00 .500
5/8″ .6250 11
5/8″ .6250 18
16.0 mm .6299 12.70 2.00 .500
11/16″ .6870 11
11/16″ .6870 16
18.0 mm .7086 10.16 2.50 .400
3/4″ .7500 10
3/4″ .7500 16
20.0 mm .7870 10.16 2.50 .400
13/16″ .8120 12
13/16″ .8120 16
13/16″ .8120 20
13/16″ .8120 28
13/16″ .8120 32
22.0 mm .8666 10.16 2.50 .400
7/8″ .8750 9
7/8″ .8750 14
15/16″ .9370 12
15/16″ .9370 16
15/16″ .9370 20
15/16″ .9370 28
15/16″ .9370 32
24.0 mm .9448 8.46 3.00 .333
1.00″ 1.0000 8
1.00″ 1.0000 12
1.00″ 1.0000 14
27.0 mm 1.0629 8.46 3.00 .333
1-1/8″ 1.1250 7
1-1/8″ 1.1250 12
30.0 mm 1.1810 7.25 3.50 .285
1-1/4″ 1.2500 7
1-1/4″ 1.2500 12
33.0 mm 1.2999 7.25 3.50 .285