Manufacturer of High Quality Ballistic Tapered Button Drill Bit 36mm 38mm 41mm

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Taper drill rod is used for rock drilling, blasting holes and other drilling works in the quarries, coal mines, traffic and other contractions. It works with taper drill bits and has different length for various applications, our taper drill rods come in a variety of taper angles, generally, the light duty rock drill usually use 7 taper or smaller taper angle, the heavy duty rock drill mainly use 11、12 taper angle. And the basic theory is that taper drill rods and taper drill bits must be in the same tapered degree. We provide tapered rods in a full range of shank configurations and steel hex diameters for hand-held pneumatic drilling needs.

(1)Steel grade: 95CrMo equivalent to SANDBAR    20 or C253,Z708,sanbar 23, 55SiMnMo

(2)Shank size: hex.22mm×108mm , hex.22mm×159mm,hex.22mm×80mm,hex.25mm×108mm. hex.25mm×159mm

(3)Taper:4°46′,6,7 ,11,12 degree etc

(4)Length: 0.4m-10m

(5)Package: in wooden case or in bundles.

(6)Productivity: 50000MT / month

Tapered equipment-Drill rods -H22 mm

Rubber collared rods
Shank hex. 22 mm (7/8″) x 159 mm (6 1/4″). Rod hex. 22 mm (7/8). Flushing hole diameter 6 mm
ROD CROSS SECTION	Length		Weight approx.
	mm	foot/inch	kg
11° taper angle
22H	600	1’11⅝”	2.5
22H	900	2’11⅜”	3.3
22H	1 000	3’3⅜”	3.7
22H	1 200	3’11¼”	4.3
22H	1 300	4’3⅛”	4.6
22H	1 400	4’7⅛”	4.9
22H	1 500	4’11″	5.2
22H	1 600	5’3″	5.5
22H	1 800	5’10⅞”	5.7
22H	2 000	6’6¾”	6.7
22H	2 200	7’2⅝”	7.4
22H	2 400	7’10½”	7.7
22H	2 600	8’6⅜”	8.6
22H	2 800	9’2¼”	9.2
22H	3 000	9’10⅛”	10.0
22H	3 200	10’6″	10.5
22H	3 400	10’9⅞”	10.8
22H	3 600	11’9¾”	11.5
22H	3 800	12’5⅝”	12.3
22H	4 200	13’9⅜”	13.6
22H	4 500	14’9⅛”	14.5

Tapered equipment-Drill rods-H25 mm

Tapered rods
Shank hex. 25 mm (1″) x 108 mm (4 1/4″). Rod hex. 25 mm (1″). Flushing hole diameter 8.6 mm
ROD CROSS SECTION	Length		Weight approx.
	mm	foot/inch	kg
7º taper angle
25H	600	1’11⅝”	2.8
25H	1 220	4′	5.3
25H	1 500	4’11″	6.4
25H	1 600	5’3″	6.8
25H	1 830	6′	7.7
25H	2 000	6’6¾”	8.3
25H	2 200	7’2⅝”	9.1
25H	2 400	7’10½”	9.9
25H	2 600	8’6⅜”	10.7
25H	3 200	10’6″	13.0
25H	3 900	12’9½”	15.8

Tapered equipment-Drill rods-H25 mm

Forged collar rods
Shank hex. 25 mm (1″) x 159 mm (6 1/4″). Rod hex. 25 mm (1″). Flushing hole diameter 8.6 mm
ROD CROSS SECTION	Length		Weight approx.
	mm	foot/inch	kg
12° taper angle
25H	500	1’7⅝”	2.7
25H	700	2’3½”	3.5
25H	1 000	3’3⅜”	4.7
25H	1 400	4’7⅛”	62
25H	1 600	5’3″	6.8
25H	2 000	6’6¾”	8.5
25H	2 500	8’2⅜”	10.4
25H	2 600	8’6⅜”	10.9
25H	3 200	10’6″	13.2
25H	3 300	10’9⅞”	13.6
25H	3 550	11’5¾”	14.6
25H	3 800	12’5⅝”	15.6
25H	4 600	11′	18.7