Page 39 - HOLE_MAKING_CATALOG_INCH_2022_P187-P236

SCD-SXC50 OAL
Solid Carbide Drills with LCF LS DC h7
Internal Coolant Channels, LU
Drilling Depth 50xD 135
DCONMS h6
PL

M E T R I C
Dimensions SOLID CARBIDE DRILLS

IC908
Designation DC DCONMS OAL LU LCF LS PL ULDR (2)
SCD 040-217-060 SXC50 4.00 6.00 270.00 217.00 225.0 40.0 0.660 50.0 •
SCD 042-217-060 SXC50 4.20 6.00 270.00 217.00 225.0 40.0 0.693 50.0 •
SCD 045-267-060 SXC50 4.50 6.00 320.00 267.00 275.0 40.0 0.743 50.0 •
SCD 047-267-060 SXC50 (1) 4.70 6.00 320.00 267.00 275.0 40.0 0.775 50.0 •
SCD 048-267-060 SXC50 4.80 6.00 320.00 267.00 275.0 40.0 0.792 50.0 •
SCD 050-267-060 SXC50 5.00 6.00 320.00 267.00 275.0 40.0 0.825 50.0 •
SCD 055-302-060 SXC50 5.50 6.00 360.00 302.00 310.0 45.0 0.907 50.0 •
SCD 058-302-060 SXC50 (1) 5.80 6.00 360.00 302.00 310.0 45.0 0.957 50.0 •
SCD 060-302-060 SXC50 6.00 6.00 360.00 302.00 310.0 45.0 0.990 50.0 •
• For user guide and cutting conditions, see pages 225-235
(1) On request
(2) Usable length diameter ratio
Recommended Drilling Procedure for Deep Hole Drilling
1 Drill a pilot hole 1-2xD deep with a short drill. The pilot drill should be
0.03-0.05 mm larger than the long drill and its point angle should 1
also be larger (over 135°).
2 Enter the pre-hole using low feed and rotate at low speed 2
(50-100 RPM) until it engages the material.
3 Activate the coolant system and increase rotation speed to the
recommended cutting parameter, maintain for 2-3 seconds, then 3
continue at recommended drilling feed. No pecking is required.
4 After having reached the required depth, reduce speed to 4
50-100 RPM before retracting from the hole.
- 40xD & 50xD must utilize a 20xD intermediary drill along with pilot drill.
- In through holes, the tool exit should not exceed 2-3 mm.

223