12degree Rock Drill Bit Factory – Bench and long-hole drilling ST68 (2 3/4″) – LYNE

Bench and long-hole drilling ST68 (2 3/4″)

R25 (1”)
R28 (1 1/8”)
R32 (1 1/4”)
R/T38 (1 1/2”)
T45 (1 3/4”)
T51 (2”)
T60 (2 3/8”)
Drill bit R/T38
Extension rod T38 – Hex. 32 mm – T38
Extension rod T38 – Round 38 mm – T38 (Speedrod)
Extension rod R38 – Round 38 mm – R38
Extension rod T38 – Round 38 mm – T38
Extenstion rod T38 – Round 38 mm – T38 (with double thread)
Guide rod T38 – Round 45 mm – T38 (Speedrod)
Guide tube T38
Coupling R/T 38

Bits

Diameter

Buttons,mm

Angle

Flushing hole

Weight approx kg

Part No.

mm

in

Front No Size

Gauge No Size

Type

Front

Gauge

Button bit

102

4”

8×12

10×12

35º

4

-

5.2

1432-102ST68-812/1012-45-51

115

4 1/2”

8×14

10×14

35º

4

-

5.9

1432-115ST68-814/1014-45-51

Button bit
	102	4”	6×13	8×14		35º	2	-	5.5	1431-102ST68-613/814-45-41

Button bit, Retrac
	102	4”	8×12	10×12		35º	4	-	6.2	1632-102ST68-812/1012-45-51
	115	4 1/2”	8×14	10×14		35º	4	-	8.4	1632-115ST68-814/1014-45-51
	102	4”	7×12	9×12		35º	3	-	6.2	1531-102ST68-712/912-45-41
	115	4 1/2”	7×13	9×13		35º	3	-	8.4	1531-115ST68-713/913-45-41

Collaring bit, ST68
	152	6”	8×16	9×16		35º	3	-	9.8	1431-152ST68-816/916-45-41

Reaming bit, ST68
	152	6”	6×14	8×14		35º	4	-	14.0	1441-152ST68-614/814-45-41

Tubes	Length		Diameter		Weight approx kg	Part No.
	mm	ft/in	mm	inch
Drill tube, ST68－Round87－ST68
	1525	5＇	87	3 1/2′	40.0	24G87-ST68/87-1525-23
	1830	6＇	87	3 1/2′	47.0	24G87-ST68/87-1830-23

Carburization is a process used to harden the entire rod surface both internally and externally to strengthen and extend the life of the rod.
High Frequency Induction is a process where only the thread ends of the rod are hardened to lengthen thread life.
Our comprehensive range of bench and production rock drilling tools includes everything from 1” rope thread equipment all the way up to T60 thread equipment, Many customers say that our rods, tubes and button bits are the best on the market today. Let’s just say they will improve productivity considerably.