Drill bits for down the hole hammers

Punta fondo foro

Drill Bits for down the hole

Bits for 3″
diameter
INGERSOLL RAND DHD3.5
MISSION RH5530
ATLAS COP 32-34
85mm 3″1/4
90mm 3″1/2
95mm 3″3/4
100mm 3″7/8


Bits for 4″
diameter
INGERSOLL RAND DHD340-QL40
MISSION RH5540
NUMA 4
ATLAS COP 44
HALCO DOMINATOR 400
BULROC H41
105mm 4″1/8
110mm 4″3/8
115mm 4″1/2
121mm 4″3/4
127mm 5″
130mm 5″1/8
133mm 5″1/4
152mm 6″


Bits for 5″
diameter
INGERSOLL RAND DHD350-QL50
MISSION RH5550-RH5055
NUMA 5
ATLAS COP 54
HALCO DOMINATOR 500
BULROC H51
127mm 5″
130mm 5″1/8
133mm 5″1/4
140mm 5″1/2
146mm 5″3/4
152mm 6″


Bits for 6″
diameter
INGERSOLL RAND DHD360-QL60
MISSION RH5560-RH5565-SD6
NUMA 6
ATLAS COP 64
HALCO DOMINATOR 600
BULROC H63
152mm 6″
155mm 6″1/8
159mm 6″1/4
165mm 6″1/2
172mm 6″3/4
178mm 7″
190mm 7″1/2
203mm 8″
219mm 8″5/8
254mm 10″


Bits for 8″
diameter
INGERSOLL RAND DHD380-QL80
MISSION RH5585-SD8
NUMA 8
ATLAS COP 84
HALCO DOMINATOR 800
BULROC H81
203mm 8″
219mm 8″5/8
222mm 8″3/4
226mm 8″7/8
229mm 9″
241mm 9″1/2
254mm 10″
270mm 10″5/8
305mm 12″