Product description
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
| shank | DHD350R/COP54 |
| Length(less bit) | 1214mm |
| External diameter | 125mm |
| Top sub thread | API 2 3/8”REG API 3 1/2”REG |
| Weight(less bit) | 77.5kg |
| Hole range | 135mm-155mm |
| Working pressure | 1.0-2. 5Mpa |
| Impact rate at 1.4Mpa | 25Hz |
| Recommended rotation speed | 20-35r/min |
| 1.0Mpa | 9m³/min |
| Air consumption 1.8Mpa | 15m³/min |
| 2.4Mpa | 23m³/min |
Product features
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.
Application
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 drill hole.
Structure picture
Physical picture
Company information
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.
