DHD Ql Mission SD 7inch 7" 255-275mm High Air Pressure DTH Drilling Tools DTH Hammer Drill Bit

• Customization: Available
• After-sales Service: Track The Usage Situation and Make Compensation
• Certification: ISO 9001:2008
• Model NO.: 7Inch bit 255-275mm
• Surface Treatment: Spray-Paint
• Manufacturing Process: Forging
• Material: Alloy Steel
• Model: DHD; Ql; Mission; SD Series
• Colour: Black, Blue, Customized
• Application: Mining / Quarrying / Tunneling / Construction
• Advantage: Wear Resistant, High Performance
• Diameter: 255-275mm
• Face Design: Flat; Convex; Concave
• Button Type: Spherical; Ballistic; Parabolic
• Gauge Buttons: 12*18mm
• Transport Package: Wooden Package
• Specification: 7" Hammer
• Trademark: BAPTECH
• Origin: China
• HS Code: 82071990
• Production Capacity: 200000/Year

Product Description

Product Description

DTH hammers are used for blast hole drilling and blasting, mainly applied in mining, marble quarry or well drilling and other construction projects.

DTH hammer drill bit used in geological exploration, coal mine, water conservancy and hydropower, highway, railway, bridge, construction and construction, etc.

 
Advantages:
The longer life of the drill: the alloy material, with longer use life which is better than similar products;
High Drilling Efficiency: the drill buttons are wear-resistant so that the drill can always keep sharp, thus greatly improving the speed of the drilling.
The drilling speed is stable: the bit is scraped and cut to break the rock.
Good Performance: the drill bit has strong wear resistance, good Diameter protection, and can make the cutting teeth be used efficiently.
The use of a wide range: the practice proves that the bit is suitable for carbonate rock, limestone, chalk, clay rock, siltstone, sandstone, and other soft and hard (9-grade drill ability of rock, hard rock drilling), compared with normal bit, especially drilling in 6-8 grade rock the effect is particularly significant.

Our products are made of alloy material, with wear-resistant drill buttons, stable drilling speed, high drilling efficiency, good diameter protection, and long service life of drill bits, which are higher than those of similar products.


 

Product Parameters

 

Head Shape	Head Dia (mm)	Shank Length	Spline	Port holes	Button qty.pcs × dia.mm			Weight (Kg)
					Button Type(Optional)	Gauge Buttons	Front Buttons
DHD3.5
Flat Face	90	180	8	2	Spherical+ Ballistic	6×Φ14	5×Φ12	4.70
Flat Face	95	180	8	2	Spherical+ Ballistic	6×Φ14	5×Φ12	4.80
Flat Face	100	180	8	2	Spherical+ Ballistic	6×Φ14	6×Φ12	4.90
Flat Face	108	180	8	2	Spherical+ Ballistic	8×Φ13	6×Φ12	5.40
DHD340
Convex Face	108	209	8	2	Spherical+ Ballistic	7×Φ16	6×Φ14	7.85
Convex Face	115	209	8	2	Spherical+ Ballistic	7×Φ16	6×Φ14	8.22
Convex Face	127	209	8	2	Spherical+ Ballistic	8×Φ16	4×Φ14+3×Φ13	8.88
Convex Face	130	209	8	2	Spherical+ Ballistic	8×Φ16	4×Φ14+3×Φ13	9.15
DHD350
Convex Face	140	260	8	2	Spherical+ Ballistic	7×Φ18	4×Φ15+3×Φ14	15.80
Flat Face	146	260	8	2	Spherical+ Ballistic	8×Φ18	8×Φ14	16.50
Flat Face	152	260	8	2	Spherical+ Ballistic	8×Φ18	8×Φ14	17.00
Concave Face	165	260	8	2	Spherical	8×Φ18	4×Φ16+4×Φ14	18.90
Concave Face	178	260	8	2	Spherical	8×Φ18	6×Φ16+5×Φ14	20.40
DHD360
Concave Face	154	308.5	8	2	Spherical	8×Φ18	4×Φ16+4×Φ15	22.50
Flat Face	165	308.5	8	2	Spherical	8×Φ18	8×Φ16	23.60
Concave Face	171	308.5	8	2	Spherical	8×Φ18	6×Φ16+4×Φ15	25.20
Concave Face	178	308.5	8	2	Spherical	8×Φ18	6×Φ16+5×Φ15	26.10
Concave Face	190	308.5	8	2	Spherical	9×Φ18	6×Φ16+5×Φ15	29.00
Concave Face	203	308.5	8	2	Spherical	10×Φ18	8×Φ16+6×Φ15	30.40
DHD380
Concave Face	203	350	10	2	Spherical	10×Φ18	4×Φ18+10×Φ16	48.50
Concave Face	216	350	10	2	Spherical	10×Φ18	4×Φ18+10×Φ16	52.10
Concave Face	230	350	10	2	Spherical	12×Φ18	12×Φ18+6×Φ16	54.80
Concave Face	235	350	10	2	Spherical	12×Φ18	12×Φ18+6×Φ16	55.50
Concave Face	254	350	10	2	Spherical	12×Φ18	12×Φ18+8×Φ16	62.40
Convex-Concave Face	275	350	10	2	Spherical	12×Φ18	27×Φ16	69.00
Convex-Concave Face	305	350	10	2	Spherical	15×Φ18	35×Φ16	77.60
DHD1120
Convex-Concave Face	305	490	8	4	Spherical	15×Φ20	27×Φ18+8×Φ16	141.30
Convex-Concave Face	311	490	8	4	Spherical	15×Φ20	27×Φ18+8×Φ16	141.60
Convex-Concave Face	325	490	8	4	Spherical	15×Φ20	27×Φ18+9×Φ16	164.30
Convex-Concave Face	350	490	8	4	Spherical	16×Φ20	32×Φ18+13×Φ16	169.10
Convex-Concave Face	381	490	8	4	Spherical	16×Φ20	36×Φ18+18×Φ16	183.00
Convex-Concave Face	400	490	8	4	Spherical	16×Φ20	40×Φ18+28×Φ16	194.00
Convex-Concave Face	445	490	8	4	Spherical	20×Φ20	48×Φ18+25×Φ16	225.70
Convex-Concave Face	500	490	8	4	Spherical	24×Φ20	90×Φ18	331.20

 

Head Shape	Head Dia (mm)	Shank Length	Spline	Port holes	Button qty.pcs × dia.mm			Weight (Kg)
					Button Type(Optional)	Gauge Buttons	Front Buttons
QL40
Convex Face	108	280	10	2	Spherical+Ballistic	7×Φ16	6×Φ14	9.42
Convex Face	115	280	10	2	Spherical+Ballistic	7×Φ16	6×Φ14	9.50
Convex Face	127	280	10	2	Spherical+Ballistic	8×Φ16	4×Φ14+3×Φ13	10.70
Convex Face	130	280	10	2	Spherical+Ballistic	8×Φ16	4×Φ14+3×Φ13	10.90
QL50
Convex Face	140	240	12	2	Spherical+Ballistic	7×Φ18	4×Φ15+3×Φ14	15.30
Flat Face	146	240	12	2	Spherical+Ballistic	8×Φ18	8×Φ14	16.00
Flat Face	152	240	12	2	Spherical+Ballistic	8×Φ18	8×Φ14	16.50
Concave Face	165	240	12	2	Spherical	8×Φ18	4×Φ16+4×Φ14	18.50
Concave Face	178	240	12	2	Spherical	8×Φ18	6×Φ16+5×Φ14	20.00
QL60
Concave Face	154	253	12	2	Spherical	8×Φ18	4×Φ16+4×Φ15	22.50
Flat Face	165	253	12	2	Spherical	8×Φ18	8×Φ16	23.00
Concave Face	171	253	12	2	Spherical	8×Φ18	6×Φ16+4×Φ15	24.40
Concave Face	178	253	12	2	Spherical	8×Φ18	6×Φ16+5×Φ15	25.30
Concave Face	190	253	12	2	Spherical	9×Φ18	6×Φ16+5×Φ15	26.50
Concave Face	203	253	12	2	Spherical	10×Φ18	8×Φ16+6×Φ15	29.70
QL80
Concave Face	203	331	16	2	Spherical	10×Φ18	4×Φ18+10×Φ16	48.20
Concave Face	216	331	16	2	Spherical	10×Φ18	4×Φ18+10×Φ16	51.90
Concave Face	230	331	16	2	Spherical	12×Φ18	12×Φ18+6×Φ16	54.70
Concave Face	235	331	16	2	Spherical	12×Φ18	12×Φ18+6×Φ16	55.30
Concave Face	254	331	16	2	Spherical	12×Φ18	12×Φ18+8×Φ16	62.20
Convex-Concave Face	275	331	16	2	Spherical	12×Φ18	8×Φ16+19×Φ16	68.80
Convex-Concave Face	305	331	16	3	Spherical	15×Φ18	12×Φ16+23×Φ16	77.30

 

Head Shape	Head Dia (mm)	Shank Length	Spline	Port holes	Button qty.pcs × dia.mm			Weight (Kg)
					Button Type(Optional)	Gauge Buttons	Front Buttons
Mission30
Flat Face	90	225	8	2	Spherical+ Ballistic	6×Φ14	5×Φ12	4.80
Flat Face	95	225	8	2	Spherical+ Ballistic	6×Φ14	5×Φ12	4.90
Flat Face	100	225	8	2	Spherical+ Ballistic	6×Φ14	6×Φ12	5.10
Flat Face	108	225	8	2	Spherical+ Ballistic	8×Φ13	6×Φ12	5.40
Mission40
Convex Face	108	228	12	2	Spherical+ Ballistic	7×Φ16	6×Φ14	7.80
Convex Face	115	228	12	2	Spherical+ Ballistic	7×Φ16	6×Φ14	8.20
Convex Face	127	228	12	2	Spherical+ Ballistic	8×Φ16	4×Φ14+3×Φ13	9.20
Convex Face	130	228	12	2	Spherical+ Ballistic	8×Φ16	4×Φ14+3×Φ13	9.30
Mission50
Convex Face	140	260	12	2	Spherical+ Ballistic	7×Φ18	4×Φ15+3×Φ14	13.90
Flat Face	146	260	12	2	Spherical	8×Φ18	8×Φ14	14.60
Flat Face	152	260	12	2	Spherical+ Ballistic	8×Φ18	8×Φ14	15.00
Flat Face	165	260	12	2	Spherical+ Ballistic	8×Φ18	9×Φ14	17.00
Concave Face	178	260	12	2	Spherical	8×Φ18	6×Φ16+5×Φ14	18.50
Mission60
Concave Face	154	231	12	2	Spherical	8×Φ18	4×Φ16+4×Φ15	20.30
Flat Face	165	231	12	2	Spherical	8×Φ18	8×Φ16	20.50
Concave Face	171	231	12	2	Spherical	8×Φ18	6×Φ16+4×Φ15	22.00
Concave Face	178	231	12	2	Spherical	8×Φ18	6×Φ16+5×Φ15	23.00
Concave Face	190	231	12	2	Spherical	9×Φ18	6×Φ16+5×Φ15	24.00
Concave Face	203	231	12	2	Spherical	10×Φ18	8×Φ16+6×Φ15	27.30
Mission80
Concave Face	203	329	12	2	Spherical	10×Φ18	4×Φ18+10×Φ16	41.20
Concave Face	216	329	12	2	Spherical	10×Φ18	4×Φ18+10×Φ16	46.00
Concave Face	230	329	12	2	Spherical	12×Φ18	12×Φ18+6×Φ16	48.70
Concave Face	235	329	12	2	Spherical	12×Φ18	12×Φ18+6×Φ16	49.30
Concave Face	254	329	12	2	Spherical	12×Φ18	12×Φ18+8×Φ16	56.20
Convex-Concave Face	275	329	12	2	Spherical	12×Φ18	8×Φ16+19×Φ16	62.80
Convex-Concave Face	305	329	12	2	Spherical	15×Φ18	12×Φ16+23×Φ16	71.30

 

Head Shape	Head Dia (mm)	Shank Length	Spline	Port holes	Button qty.pcs × dia.mm			Weight (Kg)
					Button Type(Optional)	Gauge Buttons	Front Buttons
SD4
Convex Face	108	260	8	2	Spherical+Ballistic	7×Φ16	6×Φ14	9.00
Convex Face	115	260	8	2	Spherical+Ballistic	7×Φ16	6×Φ14	9.30
Convex Face	127	260	8	2	Spherical+Ballistic	8×Φ16	4×Φ14+3×Φ13	10.30
Convex Face	130	260	8	2	Spherical+Ballistic	8×Φ16	4×Φ14+3×Φ13	10.50
SD5
Convex Face	140	259	8	2	Spherical+Ballistic	7×Φ18	4×Φ15+3×Φ14	15.00
Flat Face	146	259	8	2	Spherical+Ballistic	8×Φ18	8×Φ14	15.80
Flat Face	152	259	8	2	Spherical+Ballistic	8×Φ18	8×Φ14	16.10
Concave Face	165	259	8	2	Spherical	8×Φ18	4×Φ16+4×Φ14	18.20
Concave Face	178	259	8	2	Spherical	8×Φ18	6×Φ16+5×Φ14	19.60
SD6
Concave Face	154	322	8	2	Spherical	8×Φ18	4×Φ16+4×Φ15	25.00
Flat Face	165	322	8	2	Spherical	8×Φ18	8×Φ16	25.80
Concave Face	171	322	8	2	Spherical	8×Φ18	6×Φ16+4×Φ15	27.30
Concave Face	178	322	8	2	Spherical	8×Φ18	6×Φ16+5×Φ15	28.20
Concave Face	190	322	8	2	Spherical	9×Φ18	6×Φ16+5×Φ15	29.40
Concave Face	203	322	8	2	Spherical	10×Φ18	8×Φ16+6×Φ15	32.50
SD8
Concave Face	203	321	8	2	Spherical	10×Φ18	4×Φ18+10×Φ16	41.30
Concave Face	216	321	8	2	Spherical	10×Φ18	4×Φ18+10×Φ16	45.00
Concave Face	230	321	8	2	Spherical	12×Φ18	12×Φ18+6×Φ16	47.80
Concave Face	235	321	8	2	Spherical	12×Φ18	12×Φ18+6×Φ16	48.40
Concave Face	254	321	8	2	Spherical	12×Φ18	12×Φ18+8×Φ16	55.30
Convex-Concave Face	275	321	8	2	Spherical	12×Φ18	27×Φ16	62.00
Convex-Concave Face	305	321	8	3	Spherical	15×Φ18	35×Φ16	70.50
SD10
Convex-Concave Face	254	356	8	2	Spherical	12×Φ19	8×Φ18+19×Φ16	82.30
Convex-Concave Face	275	356	8	2	Spherical	12×Φ19	8×Φ18+20×Φ16	87.70
Convex-Concave Face	305	356	8	3	Spherical	15×Φ19	27×Φ18+8×Φ16	97.50
Convex-Concave Face	325	356	8	3	Spherical	15×Φ19	27×Φ18+9×Φ16	106.00
Convex-Concave Face	350	356	8	4	Spherical	16×Φ19	32×Φ18+14×Φ16	115.30
Convex-Concave Face	400	356	8	4	Spherical	16×Φ19	40×Φ18+25×Φ16	140.70
SD12
Convex-Concave Face	305	470	8	3	Spherical	15×Φ20	27×Φ18+8×Φ16	146.50
Convex-Concave Face	311	470	8	3	Spherical	15×Φ20	27×Φ18+8×Φ16	147.00
Convex-Concave Face	325	470	8	3	Spherical	15×Φ20	27×Φ18+9×Φ16	156.00
Convex-Concave Face	350	470	8	4	Spherical	16×Φ20	32×Φ18+13×Φ16	166.00
Convex-Concave Face	381	470	8	4	Spherical	16×Φ20	36×Φ18+18×Φ16	184.00
Convex-Concave Face	400	470	8	4	Spherical	16×Φ20	40×Φ18+28×Φ16	199.00
Convex-Concave Face	445	470	8	4	Spherical	20×Φ20	48×Φ18+25×Φ16	237.50
Convex-Concave Face	500	470	8	4	Spherical	24×Φ20	90×Φ18	293.00

 

Detailed Photos

 

  

 
    
         

 

FAQ

Q: How to get exactly what you need? Do we support customization?
A: We accept customized orders. When sending an enquiry, please provide a detailed product description or model number, as well as a reference picture if possible. This will help us to better understand your requirements and avoid any potential confusion.

Q: What are your terms of payment?
A: TT or L/C.

Q: What about the samples?
A: Samples are available, please contact us for more details.

Q: How long is the delivery time?
A: Usually 2 to 3 weeks, depending on the product.

Q: What about the after-sales services?
A: We have our own experienced QC. Will pre-check and accept products ahead of delivery. We will make compensation if there is a problem with the product, please contact us for details.

Q: What is the minimum order quantity?
A: 1 piece or 1 set is available.

 

Company Profile

Tianjin Baptech Machinery Co., Ltd is a leading provider of mining equipment, specializing in research, development and sales. With years of experience in design, production and sales, we have built a strong reputation in the industry. Baptech Machinery works closely with many of China's leading enterprises in the industry, using high-quality raw materials, advanced production technology and precise processing equipment to ensure our products perform excellently and are built to last.

Our product range includes Top Hammer Drilling Tools, Down the Hole Drilling Tools, Pneumatic Rock Drill, Pneumatic Roof Bolter, Full Hydraulic Tunneling Drilling Rig, Full Hydraulic Mining Drilling Rig, Full Hydraulic Anchor Drilling Rig, Down the Hole Drilling Rig, Underground Internal Combustion Scraper, Mining Truck, and other Underground Trackless Equipment.

Our products are renowned for their reliability and excellent performance, and are used extensively in the mining, engineering construction and other sectors.

Tianjin Baptech Machinery Co., Ltd is dedicated to the technical research and application of mining equipment, with the goal of providing users with efficient and safe equipment and quality service and after-sales support