38mm Diameter 7 Teeth Tapered 7 Degree 11 Degree 12 Degree Angled Drill Bits for Rock Drilling Applications

• Customization: Available
• After-sales Service: Product Warranty
• Warranty: 1 Year/ 2000hours
• Model NO.: 11 degree
• Standard: AISI, GOST
• Surface Treatment: Polishing
• Manufacturing Process: Casting
• Material: Carbon Steel
• Hole Diameter: 30mm to 42mm
• Shank: H22/H19/25
• Length: Customized
• Weight: 0.2-0.6
• Transport Package: Wooden Box
• Specification: 7/11/12 degree
• Trademark: JCDRILL
• Origin: China
• HS Code: 8430419000
• Production Capacity: 50000 PCS/Year

Product Description

38mm 7teeth Tapered 7/11/12 Degree Drill Bits for Rock Drilling


Application                                                                                                                                                           
JCDRILL offers a complete line of tapered rods and bits for all of your hand-held pneumatic drilling needs. For mine, quarry and tunnel work, we provide quality tools that withstand the toughest rock drilling demands.
With our comprehensive product line, you can find the exact configuration to integrate into your drilling operation. Our tapered bit and rods come in a variety of taper angles, and we provide tapered rods in a full range of shank configurations and steel hex diameters. Our tapered bits include both cross and button designs, as well as chisel design. JCDRILL tapered rods are available with high-frequency or fully carburized heat treatments.

The taper cross bits can be used under any rock drilling condition because of it's comprehensive adaptability. Compared with taper chisel bits, taper cross bits have a better drilling performance because carbide tips on cross bits doubled, which means carbides shape are cross type on drill bits. Taper cross bit is mainly used for hard or very hard rock formation.  

Characteristics                                                                                                                                                       
1 Long life
2. Lower consumption
3. Wide selections of drill bits
4. Delivery quickly
5. Suitable for small hole range
6. Widely used in Dimensional Stone Quarrying Industry
7. Widely used in Underground Mining Industry

Specification                                                                                                                                                             

Description	Diameter	Length	No. of  buttons	Weight
Taper Button Bit	mm	mm		kg
	26	50	5	0.2
Taper:a=4°46"  6°,7°,11°,12°	27	50	5 6	0.2
Socket inside  Dia. D=19, 22, 25	28	50	4 5	0.2
	29	50	4	0.2
	30	50   80	4   5   6    7	0.2 0.3
	32	50   55   71   80	5   6    7    8	0.2    0.22      0.3
	33	50   55   71   80	6   7    8    9	0.2    0.3    0.36
	34	50   55	6   7    9	0.22   0.3
	35	55   71    80	7    8	0.22   0.3    0.37
	36	50   55	4    5     6    7	0.3    0.35
	37	55	7	0.3
	38	50    55	4    6      7	0.25    0.35
	40	50     55	4    6       7	0.35
	41	50     55     71	7	0.35
	42	50	4     5	0.4
	45	50      55     71	6      7	0.5

Factory &Process



Packing& Delivery                                                                                                                                                

Service                                                                                                                                                                

In our after sales service system, We establish perfect control system strictly according to ISO-9000 series, in this system, technology date and problem solve solution and preventive measures will be provided in any maintain project, all the spare parts will be used in new OEM products with installation instructions, packing list, manufacturer's instruction, qualification and Warranty certificate.

We provide "one equipment & one case, endless service, namely the after sales service begin from the order confirmation, last for the working life of the equipment.