R28 (1 1/8 “) bit thread

Rock drilling tools include: drill bit,drill rod, shank and coupling. The piston of drill rig directly impacts the shank, makes impact power reach the bit through rod by the form of stress wave, so as to work on the breakage of rock. The primary breaking way is impacting while the secondary is cutting; both are with high drilling efficiency. Usually the land surface of the earth is covered with loose, unconsolidated material such as soil, clay, silt, sand, gravel and boulders, which varies in depth from a few centimeters to hundreds of meters.Use concentric system can drill this complex formation very well.The systems are available through the whole product range the smallest being for 114 mm (4 1/2″) casing and largest size available at the moment is for 1220 mm (48″) casing.

Send email to us

Product Detail

Product Tags

R28 (1 1/8 “) bit threa

Bits	Diameter		Buttons,mm			Angle	Flushing hole			Weight approx kg		Part No.
Bits	mm	in	Front No Size	Gauge No Size	Type	Angle	Front	Gauge		Weight approx kg		Part No.
Button bit
	38	1 1/2”	2×7	5×9		30º	1		1		0.60	1431-38R28-27/59-45-41
	38	1 1/2”	2×7	5×9		35º	1		1		0.60	1431-38R28-27/59-45-41
	41	1 5/8”	2×8	5×9		35º	1		1		0.70	1431-41R28-28/59-45-41
	43	1 11/16”	2×8	5×10		30º	1		1		0.70	1431-43R28-28/510-45-41
Cross bit
	38	1 1/2”	-	-	-	-	1		2		0.60	1221-38R28-12/8-42-23
	41	1 5/8”	-	-	-	-	1		2		0.70	1221-41R28-12/8-42-23
Reaming bit, 6º taper
	64	2 1/3”	4×8	8×9		25º	-		-		0.90	1441-646-48/89-45-51
	76	3”	4×10	8×10		30º	-		-		1.30	1441-766-410/810-45-51
	89	3 1/2”	4×11	8×11		30º	-		-		1.70	1441-896-411/811-45-51
Pilot adapter, 6º taper,R28 thread
	26	1 1/32”	-	-	-	-	-		-		1.30	1442-26R28-15/8-45-23

Rods		Length		Diameter		Weight approx kg		Part No.
		mm	Ft/in	mm	inch
Drifter rod,R32-Hex28-R28
		2400	7＇10/2”	28	1 1/8”	12.3		21H28—R28/R32-2400-23
		2750	9＇1/4”	28	1 1/8”	14.1		21H28—R28/R32-2750-23
		3090	10＇15/8”	28	1 1/8”	15.8		21H28—R28/R32-3090-23
		3700	12＇15/8”	28	1 1/8”	18.9		21H28—R28/R32-3700-23
		4310	14＇15/8”	28	1 1/8”	22.0		21H28—R28/R32-4310-23
Coupling sleeve
	R32	150	5 7/8”	44	1 23/32”		1.0	31-R32-44-150-23

Thread Button Bit
Thread Button Bits: High quality and several thread with various carbide tips like YK05 are available. All products can be developed upon customers’ request.
Prodrill supply all kind of button bits with Rope thread R22, R25, R28, R32, R35, R38 and T thread, T38, T45, T51, ST58, ST68, T60 etc. for world famous brand drill rig.
Main button bits is:
R32-43MM, R32-45MM, R32-51, R32-64, R32-76;
T38-64, T38-76MM, T38-89, T38-102MM;
T45-76MM, T45-89MM, T45-102MM;
T51-89MM, T51-102MM, T51-127MM etc.
all face design, flat face, drop-center face, normal body and retrac body.

Previous: R25 (1 “) bit thread Bits Diameter

Next: R32 (1 1/4 “) bit thread

4 Inch Rock Drill Bit