Elite SDS-MAX Drill Bits - For Natural Stone SDS-MAX Drilling Accessories
CURRENT BIT (NOT USED)
CURRENT BIT (AFTER 25M DRILLING)
29.5φ
28.8φ Ø28.8
Ø32
Ø30
Ø30
29.8φ Ø29.8
32φ
30φ
30φ
CAUSE OF BIT BREAKAGE
COUNTER MEASURE
Bit breakage is usually caused by jamming, the normal wear components are the shoulder as well as tct tip. The shoulder section directly behind the tip is worn down most because it is the part always used for drilling even during shallow drilling. Due to general usage and resharpening of tct tip, it will be smaller than the shoulder and eventually the bit will become tapered
As a counter measure, the shoulder, where highlighted in orange on the bit below, has been modified and is given more body to allow for more even wear. The TCT tip sides are also much thicker and flutes toward the tool end of the bit are much thinner where the wear is much less.
+37% CARBIDE
+37% carbide
Part No.
Description
Barcode
B-39431 Elite SDS-MAX Natural Stone Drill Bit 28mm x 670mm
0088381434256
B-39447 Elite SDS-MAX Natural Stone Drill Bit 30mm x 720mm
0088381434263
B-39453 Elite SDS-MAX Natural Stone Drill Bit 32mm x 570mm
0088381434270
B-39469 Elite SDS-MAX Natural Stone Drill Bit 32mm x 920mm
0088381434287
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