DTH Drill Bit DHD3.5-138
Product Description
DTH Drill Bit DHD3.5-138
DTH hammer bits are designed for maximum performance and hole cleaning ability and high penetration rate.
ROSCHEN can design and manufacture according to customer's requirement of the down the hole bits with different Diameter, air holes numbers, carbide button shape and the face shape.
DTH Bit DHD3.5-138
CODE NO. | DHD3.5-138 |
Shank type | DHD |
Diameter | 138mm |
gauge buttons | 7*17 |
Face buttons | 7*14 |
Bit face type | Convex face |
carbide design | Dome/hemispherical |
approx. weight | 16Kg |
Features of Convex Face
This face has been designed to offer high penetration rate in soft rock such as shale, limestone etc
They are recognized for having excellent capability for drilling into moderately consolidated rock conditions
Carbide Design
DTH Bits with hemispherical carbide configuration are capable of drilling in hard rock. Although their penetration rate is slower in comparison to the bits with semi ballistic carbide profile, the bits equipped with these hemispherical buttons have a longer life.
ROSCHEN is rock drilling tools manufacturer, we offer an extensive range of DTH hammer rock drill bits with shank type: DHD3.5, DHD340A, DHD3.5R, DHD360, DHD380; and DTH bits hole diameter: 3'', 4'', 5'', 6'', 8''(85mm-350mm).
Down The Hole Drilling Button Bits are produced from premium quality nickel-alloy steel for increased durability and wear characteristics. Specific heat treatment standards and special "stress relief" processes ensure consistent performance.
Down-the-hole (DTH) bits are used with Down-the-hole hammers for drilling holes through a wide range of rocks types. In conjunction with DTH hammers, drill hammer bits are designed with a splined drive for rotating the bit in the ground. Drill bits are available in different sizes and different styles so they can drill a wide range of hole sizes.
Dth Hammer Drilling Tools Specifications:
ROSCHEN DTH Hammers Specifications | ||||||||
Hammer Size | Bit Shank | ROSCHEN Code | Connection Thread | Suitable bit | Working pressure | Air consumption | ||
2" | BR2 | ROS 11 ROS 22 | RD50 box | ¢70-¢90mm | 0.7-1.75Mpa | 0.7Mpa | 4.5m3/min | |
1.0Mpa | 4m3/min | |||||||
1.4Mpa | 5m3/min | |||||||
3" | DHD3.5 | ROS 32 | API 2 3/8" Reg | ¢90-¢110mm | 1.0-1.5Mpa | 1.0Mpa | 4.5m3/min | |
COP32/COP34 | ||||||||
M30 | 1.5Mpa | 9m3/min | ||||||
4" | DHD340 | ROS 34 | API 2 3/8" Reg | ¢110-¢135mm | 1.0-2.5Mpa | 1.0Mpa | 6m3/min | |
COP44 | ||||||||
QL40 | ||||||||
SD4 | 1.8Mpa | 10m3/min | ||||||
M40 | 2.4Mpa | 15m3/min | ||||||
5" | DHD350 | ROS 52 ROS 54 | API 2 3/8"Reg/API 3 1/2" Reg | ¢135-¢155mm | 1.0-2.5Mpa | 1.0Mpa | 9m3/min | |
COP54 | ||||||||
QL50 | ||||||||
SD5 | 1.8Mpa | 15m3/min | ||||||
M50 | 2.4Mpa | 23m3/min | ||||||
6" | DHD360 | ROS 62 ROS 64 | API 3 1/2" Reg | ¢155-¢190mm | 1.0-2.5Mpa | 1.0Mpa | 10m3/min | |
COP64 | ||||||||
QL60 | ||||||||
SD6 | 1.8Mpa | 20m3/min | ||||||
M60 | 2.4Mpa | 28.5m3/min | ||||||
8" | DHD380 | ROS 82 ROS 84 | API 4 1/2" Reg | ¢195-¢254mm | 1.0-2.5Mpa | 1.0Mpa | 15m3/min | |
COP84 | ||||||||
QL80 | 1.8Mpa | 26m3/min | ||||||
SD8 | 2.4Mpa | 34m3/min | ||||||
M80/M85 | ||||||||
10" | SD10 | ROS 100 | API 6 5/8" Reg | ¢254-¢311mm | 1.0-2.5Mpa | 1.0Mpa | 22m3/min | |
Numa100 | 1.8Mpa | 40m3/min | ||||||
ROS 100 | 2.4Mpa | 55m3/min | ||||||
12" | DHD1120 | ROS 120 | API 6 5/8" Reg | ¢305-¢445mm | 1.0-2.5Mpa | 1.0Mpa | 30m3/min | |
SD12 | 1.8Mpa | 56m3/min | ||||||
Numa120 | 2.4Mpa | 78m3/min | ||||||
Notes: Any special size of DTH bits will be available by requests. | ||||||||
Metzke, Remet thread is available! |