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Products
4 Flute Core Drill Bit 7DSRN
The 4-flute core drill is a drilling tool manufactured by Kexian. It features four cutting edges and is designed for drilling in metal and hard wood. It offers a good tolerance range of 0.016 to +0.029 mm. With its high cutting performance and efficient chip evacuation capability, it delivers excellent drilling results. If you are interested in our products, please feel free to contact us. We are committed to providing you with the best products.
| .Dc | Tolerance.m7 |
| 3.00≤Dc≤6.00 | +0.016/+0.004 |
| 6.01≤Dc≤10.00 | +0.021/+0.006 |
| 10.01≤Dc≤18.00 | +0.025/+0.007 |
| 18.01≤Dc≤20.00 | +0.029/+0.008 |
DIMENSIONS OF CUTTER
Cutting Materials
Very Suitable
Suitable
Carbon | Alloy Steel | Quenche | Cast Iron | Hardened Steel | Stainless | Titanium | Alumunum Alloy | Copper | Resin | Graphite | Super Alloy | |
| ≤52hrc | >52hrc | |||||||||||
| | | | | | | | |||||
| Purchase No. | Dc(mm) | L3(mm) | L(mm) | Ds | Ls | L4(mm) | ||||||
| 7DSRN.450.56.06.94 | 4.50 | 56.00 | 94.00 | 6.00 | 36.00 | 45.00 | ||||||
| 7DSRN.500.56.06.94 | 5.00 | 56.00 | 94.00 | 6.00 | 36.00 | 45.00 | ||||||
| 7DSRN.550.56.06.94 | 5.50 | 56.00 | 94.00 | 6.00 | 36.00 | 45.00 | ||||||
| 7DSRN.600.56.06.94 | 6.00 | 56.00 | 94.00 | 6.00 | 36.00 | 45.00 | ||||||
| 7DSRN.610.56.06.94 | 6.10 | 56.00 | 94.00 | 6.00 | 36.00 | 45.00 | ||||||
| 7DSRN.620.67.08.110 | 6.20 | 67.00 | 110.00 | 8.00 | 36.00 | 57.00 | ||||||
| 7DSRN.635.67.08.110 | 6.35 | 67.00 | 110.00 | 8.00 | 36.00 | 57.00 | ||||||
| 7DSRN.650.67.08.110 | 6.50 | 67.00 | 110.00 | 8.00 | 36.00 | 57.00 | ||||||
| 7DSRN.680.67.08.110 | 6.80 | 67.00 | 110.00 | 8.00 | 36.00 | 57.00 | ||||||
| 7DSRN.700.67.08.110 | 7.00 | 67.00 | 110.00 | 8.00 | 36.00 | 57.00 | ||||||
| 7DSRN.750.67.08.110 | 7.50 | 67.00 | 110.00 | 8.00 | 36.00 | 57.00 | ||||||
| 7DSRN.780.67.08.110 | 7.80 | 67.00 | 110.00 | 8.00 | 36.00 | 57.00 | ||||||
| 7DSRN.800.67.08.110 | 8.00 | 67.00 | 110.00 | 8.00 | 36.00 | 57.00 | ||||||
| 7DSRN.850.80.10.122 | 8.50 | 80.00 | 122.00 | 10.00 | 40.00 | 62.00 | ||||||
| 7DSRN.900.80.10.122 | 9.00 | 80.00 | 122.00 | 10.00 | 40.00 | 62.00 | ||||||
| 7DSRN.950.80.10.122 | 9.50 | 80.00 | 122.00 | 10.00 | 40.00 | 62.00 | ||||||
| 7DSRN.1000.80.10.122 | 10.00 | 80.00 | 122.00 | 10.00 | 40.00 | 62.00 | ||||||
| 7DSRN.1050.94.12.141 | 10.50 | 94.00 | 141.00 | 12.00 | 45.00 | 72.00 | ||||||
| 7DSRN.1100.94.12.141 | 11.00 | 94.00 | 141.00 | 12.00 | 45.00 | 72.00 | ||||||
| 7DSRN.1150.94.12.141 | 11.50 | 94.00 | 141.00 | 12.00 | 45.00 | 72.00 | ||||||
| 7DSRN.1200.94.12.141 | 12.00 | 94.00 | 141.00 | 12.00 | 45.00 | 72.00 | ||||||
| 7DSRN.1250.108.14.155 | 12.50 | 108.00 | 155.00 | 14.00 | 45.00 | 83.00 | ||||||
| 7DSRN.1270.108.14.155 | 12.70 | 108.00 | 155.00 | 14.00 | 45.00 | 83.00 | ||||||
| 7DSRN.1300.108.14.155 | 13.00 | 108.00 | 155.00 | 14.00 | 45.00 | 83.00 | ||||||
| 7DSRN.1350.108.14.155 | 13.50 | 108.00 | 155.00 | 14.00 | 45.00 | 83.00 | ||||||
| 7DSRN.1400.108.14.155 | 14.00 | 108.00 | 155.00 | 14.00 | 45.00 | 83.00 | ||||||
| 7DSRN.1450.121.16.171 | 14.50 | 121.00 | 171.00 | 16.00 | 48.00 | 92.00 | ||||||
| 7DSRN.1500.121.16.171 | 15.00 | 121.00 | 171.00 | 16.00 | 48.00 | 92.00 | ||||||
| 7DSRN.1550.121.16.171 | 15.50 | 121.00 | 171.00 | 16.00 | 48.00 | 92.00 | ||||||
| 7DSRN.1600.121.16.171 | 16.00 | 121.00 | 171.00 | 16.00 | 48.00 | 92.00 | ||||||
| 7DSRN.1650.135.18.185 | 16.50 | 135.00 | 185.00 | 18.00 | 48.00 | 103.00 | ||||||
| 7DSRN.1700.135.18.185 | 17.00 | 135.00 | 185.00 | 18.00 | 48.00 | 103.00 | ||||||
| 7DSRN.1750.135.18.185 | 17.50 | 135.00 | 185.00 | 18.00 | 48.00 | 103.00 | ||||||
| 7DSRN.1800.135.18.185 | 18.00 | 135.00 | 185.00 | 18.00 | 48.00 | 103.00 | ||||||
| 7DSRN.2000.148.20.200 | 20.00 | 148.00 | 200.00 | 20.00 | 50.00 | 112.00 | ||||||
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