Drilling Equipment

Rock Bolts

Self-drilling Anchor

Self-drilling anchors are injection piles with a continuous external thread. The system is based on the normal R32, R38 and R51 drill rod threads. The threads of the anchor rods are cold rolled over the entire rod length. This cold forming process does not only harden and temper the steel and improve the yield point, it also ensures that each rod is subjected to a mechanical material test. The continuous external thread of the anchor rod guarantees an effective transport of cuttings and the anchor rod´s large internal diameter ensures trouble-free injection even for very long holes.

Designation			R32-210	R32-250	R32-280	R32-320	R32-360	R32-400
Nominal Outer Diameter	D_{a, nenn}	mm	32
Outer Diameter	D_a	mm	31,1
Middle Inside Diameter	D_i	mm	21,0	20,0	18,5	16,5	15,0	12,5
Nominal Cross-Section	S₀	mm²	340	370	410	470	510	560
Nominal Mass	m	kg / m	2,65	2,90	3,20	3,70	4,00	4,40
Force at the 0,2% Yield Load	F_p0,2	kN	160	190	220	250	280	330
Final Load	F_m,nom	kN	210	250	280	320	360	400
<Yield Load	R_p0,2	N / mm²	470	510	540	530	550	590
Ultimate Strength	R_m	N / mm²	620	680	680	680	710	710

Designation			R38-420	R38-500	R38-550
Nominal Outer Diameter	D_{a, nenn}	mm	38
Outer Diameter	D_a	mm	37,8
Middle Inside Diameter	D_i	mm	21,5	19,0	17,0
Nominal Cross-Section	S₀	mm²	660	750	800
Nominal Mass	m	kg / m	5,15	5,85	6,25
Force at the 0,2% Yield Load	F_p0,2	kN	350	400	450
Final Load	F_m,nom	kN	420	500	550
Yield Load	R_p0,2	N / mm²	530	530	560
Ultimate Strength	R_m	N / mm²	640	670	690

Bezeichnung			R51-550	R51-660	R51-800
Nominal Outer Diameter	D_{a, nenn}	mm	51
Outer Diameter	D_a	mm	49,8
Middle Inside Diameter	D_i	mm	34,5	33,0	29,0
Nominal Cross-Section	S₀	mm²	890	970	1150
Nominal Mass	m	kg / m	6,95	7,65	9,00
Force at the 0,2% Yield Load	F_p0,2	kN	450	540	640
Final Load	F_m,nom	kN	550	660	800
Yield Load	R_p0,2	N / mm²	510	560	560
Ultimate Strength	R_m	N / mm²	620	680	700

Button Bit		Cross Bit		Powerline Cross Bit		Drop Center Bit

Without Tungsten Carbide ES	With Tungsten Carbide ESS	Without Tungsten Carbide EX	With Tungsten Carbide EXX	Without Tungsten Carbide EX	With Tungsten Carbide EXX	Without Tungsten Carbide ES-DC	With Tungsten Carbide ESS-DC
Connection Thread	Diameter
R32	51/64/76 mm	51/76 mm		51/76 mm		-
R38	64/76/90 mm	76/90 mm		-		100/115 mm
R51	90/100 mm	90/100 mm		-		100/115 mm

Type	Outside Dia.	Length
R32	42 mm 42 mm	145 mm 160 mm
R38	51 mm	180 mm
R51	63 mm	200 mm

Type	Outside Dia.	Length
R32	46 mm	45 mm
R38	50 mm	49 mm
R51	75 mm	70 mm

Type	Dimension	Hole Diameter
R32	150x150x8 mm 180x180x8 mm 200x200x10 mm 200x200x12 mm	34,5 mm
R38	200x200x10 mm 200x200x12 mm	40,0 mm
R51	200x200x12 mm 250x250x25 mm	52,5 mm

SN-Threaded Rebar & Concret Rebar

Dia. (mm)	Yield Point	Final load	Weight (kg / m)	Area (mm²)	Thread	Peak
20	160 kN	173 kN	2,5	314	M20	60° tip of choice
25	245 kN	270 kN	3,9	491	M24	60° tip of choice
28	310 kN	340 kN	4,8	616	M27	60° tip of choice
32	405 kN	440 kN	6,3	804	M32	60° tip of choice
40	630 kN	690 kN	9,9	1256	M42	60° tip of choice
50	980 kN	1080 kN	15,4	1963	M52	60° tip of choice

Steel quality BSt500S

Minroc Full-threaded Bars

Our Tenso.Rig anchor rods are solid B500B or S670 steel anchros with a special left-hand thread profile over the complete length. If necessary, the anchor rods can be cut by hand at the construction site in the needed length. And also extending to the desired system length by using a coupling.

Steel B500B				Steel S670
	Yield Point	Final load	Diameter	Yield Point	Final load
TS20	157 kN	173 kN	20	213 kN	251 kN	TS20H
TS25	246 kN	270 kN	25	333 kN	392 kN	TS25H
TS28	308 kN	388 kN	28	418 kN	492 kN	TS28H
TS32	402 kN	442 kN	32	546 kN	643 kN	TS32H
TS40	628 kN	690 kN	40	854 kN	1004 kN	TS40H
TS50	981 kN	1080 kN	50	1316 kN	1548 kN	TS50H
TS63.5	1757 kN	2217 kN	63.5	2153 kN	2533 kN	TS63.5H

Friction Anchor

Expansion Shell Anchor

Steel Tube Spile

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