FOCUS IN MANUFACTURING OF HIGH QUALITY DTH AND RC DRILLING TOOLS.

Home
Products
About Us
Factory Tour
Quality Control
Contact Us
Request A Quote
Home ProductsDTH Drilling Tools

12" Numa Down The Hole Numa120 DTH Button Drill Bits For Rock Drilling

Certification
Good quality Down The Hole Hammer for sales
I received my hammers and bits, they looks amazing,.they are performing well after we use them, thanks very much.

—— John Lewis

I would recommend this company product 110% as in the past I have had a 100% good result from them.

—— Vesa Vaatanen

I'm Online Chat Now

12" Numa Down The Hole Numa120 DTH Button Drill Bits For Rock Drilling

China 12" Numa Down The Hole Numa120 DTH Button Drill Bits For Rock Drilling supplier

Large Image :  12" Numa Down The Hole Numa120 DTH Button Drill Bits For Rock Drilling

Product Details:

Place of Origin: China
Brand Name: SOLLROC
Certification: SGS
Model Number: Numa120 dth bits

Payment & Shipping Terms:

Minimum Order Quantity: 1 set
Packaging Details: carton + ply wooden case + pallet for seaworthy or airworthy
Delivery Time: 3-4 weeks
Supply Ability: 30000 sets per month
Contact Now
Detailed Product Description
Product Name: Numa120 Dth Bits Diameter: 302mm, 311mm, 330mm, 356mm,381mm
Air Pressure: 10-30 Bar Applications: Waterwell Drilling And Rock Drilling
Face Shape: Flat, Convex, Concave Keyword: Numa120 Bit

12" Numa Down The Hole Numa120 DTH Button Drill Bits For Rock Drilling

 

Product specifications: Numa120 dth bits

For 12" hammer
DTH bits shank
Bit Dia. No
Air
Holes.
Gauge
Buttons
Front
Buttons
Weight
(Kg)
Part No.
mm inch
DHD1120 305 12" 4 12×φ18 36×φ16 152.0 DHD1120-305
311 12 1/4" 4 12×φ18 36×φ16 157.0 DHD1120-311
330 13" 4 16×φ18 42×φ16 165.0 DHD1120-330
356 14" 4 16×φ19 48×φ16 178.0 DHD1120-356
381 15" 4 16×φ19 48×φ18 198.0 DHD1120-381
SD12 305 12" 4 12×φ18 36×φ16 156.0 SD12-305
311 12 1/4" 4 12×φ18 36×φ16 168.0 SD12-311
330 13" 4 16×φ18 42×φ16 180.0 SD12-330
356 14" 4 16×φ19 48×φ16 191.0 SD12-356
381 15" 4 16×φ19 48×φ18 200.0 SD12-381
NUMA120 305 12" 4 12×φ18 36×φ16 152.0 NUMA120-305
311 12 1/4" 4 12×φ18 36×φ16 158.0 NUMA120-311
330 13" 4 16×φ18 42×φ16 165.0 NUMA120-330
356 14" 4 16×φ19 48×φ16 178.0 NUMA120-356
381 15" 4 16×φ19 48×φ18 195.0 NUMA120-381
NUMA125 305 12" 4 12×φ18 36×φ16 170.0 NUMA125-305
311 12 1/4" 4 12×φ18 36×φ16 173.0 NUMA125-311
330 13" 4 16×φ18 42×φ16 182.0 NUMA125-330
356 14" 4 16×φ19 48×φ16 191.0 NUMA125-356
381 15" 4 16×φ19 48×φ18 200.0 NUMA125-381

 


Product photos


12" Numa Down The Hole Numa120 DTH Button Drill Bits For Rock Drilling
 

it face shape selection:
1. Drop Center Bit
For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.
2. Concave Face
The all-round application bit face specifically for medium hard and homogenerous rock formations. Good hole deviation control and good flushing capacity.
3. Convex Face
For high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash, and may reduce the load and wear on the gauge buttons, but poor hole deviation control.
4. Double Gauge Face
This kind of face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit.
5. Flat Face Bit
This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures. Good penetration rates an resistance to steel wash.
Carbide button shape selection:
1. Domed/Round Button
2. Parabolic/Semi-Ballistic Buttons
3. Ballistic Button
4. Sharp Button
5. Flat Button

Shank style Diameter in mm Flushing holes No. Gauge buttons Face buttons Approx.weight


NUMA120
305 4 12*18mm 36*16mm 152.0kg
311 4 12*18mm 36*16mm 158.0kg
330 4 16*18mm 42*16mm 165.0kg
356 4 16*19mm 48*16mm 178.0kg
381 4 16*19mm 48*18mm 195.0kg
 

 

We are a leading manufacturer of rock drilling tools, like DTH hammers and bits, DTH drill pipes, RC hammers and bits, tophammer button bits, coupling, cross bits, drill rods located in Changsha, Hunan, China.
We have rich experience in this field of DTH hammers and bits for 20 years.
Owing to high quality, professional serivce and competitive price, we have gotten good reputation from our customers from all over the world, such as France, Spain, Italy, South Africa, Iran, Malaysia, Australia ad etc.

 

 

Contact Details
Changsha Sollroc Engineering Equipments Co., Ltd

Contact Person: Amanda Yong

Tel: +8613637419898

Send your inquiry directly to us (0 / 3000)