High Pressure DTH Air Drill DHD350 is very popular in
international mining drilling and rock excavation field.
High Pressure DTH Air Drill DHD350 drill holes from 127mm to 155mm.
Matched drilling bits: DHD350-130mm, DHD350-135mm, DHDH350-140mm,
DHD350-146mm, DHD350-150mm, DHD350-152mm, DHD350-156mm.
We supply DTH hammers and bits from 2"-18" for shank type DHD, QL,
SD, Mission, Numa, etc.
HD55A DTH hammer overview
|Top sub thread||API 2 3/8”REG API 3 1/2”REG|
|Working pressure||1.0-2. 5Mpa|
|Impact rate at 1.4Mpa||25Hz|
|Recommended rotation speed||20-35r/min|
|Air consumption 1.8Mpa||15m³/min|
Valveless air distribution. More reliable.
Simple design of the piston. Long life.
More efficient energy transfer, fact drilling speed, lower air
consumption and lower oil consumption.
Fewer internal parts, simple structure, long life, less failure and
easier to maintain because all the parts are heat treated.
Easy to disassemble because the top sub, the drive chuck and the
external cylinder are connected by multi-step thread.
DTH drilling tool is a kind of drilling system which uses
compressed air as motivation, makes drilling impact motivation
parts down the hole, to control the piston reciprocating motion by
the distribution device in the hammer, and then impacts the DTH bit
in the front of the hammer to transit the impacting power to the
bit. The DTH bit in the front of the hammer breaks the rock to
Sollroc , with more 10 years of experience ,is one of the
professional manufacturer and supplier of high performance rock
drilling tools like: DTH hammers and bits, RC hammers and bits, DTH
drill rods and top hammer drilling tools. Our tools are widely used
in different drilling applications including mining, quarrying,
water well drilling, geotechnical industries and etc.
Sollroc is specialized in designing, manufacturing and developing
equipments and accessories for standard models as well as the
special needs of clients and provides them with the best
suggestions and solutions. We practice strict and stringent quality
control during manufacturing and adhered to recognized and approved
quality control systems. Each of our products follows the quality
requirements and procedures to ensure finished products are durable
and superior up to standard.