AFQL80

8” High Air Pressure DTH Hammer with foot valve

8 Inch DTH Hammers are robust drilling tools used in various drilling applications, particularly in mining, construction, and exploration industries. These hammers are designed to create boreholes by delivering high-frequency, high-impact blows to the drill bit.

Their efficient energy transfer mechanism makes them suitable for drilling into hard rock formations, making them crucial in tasks like well drilling, geotechnical drilling, and foundation piling. 8 Inch DTH Hammers are valued for their ability to provide deep and accurate boreholes in challenging terrains, contributing to improved drilling efficiency and productivity.

Replacement Parts | Item DescriptionWeight Kg
1. Top Sub (Back Head)59.0
2. “O” Ring of Top Sub41.0
3. Breakout Ring of Top Sub0.02
4. Check Valve (Stop Valve)0.30
5. Spring1.50
6. Compression Buffer0.10
7. Control Tube (Air Distributor)0.42
8. Internal Cylinder (Internal Sleeve)13.0
9. Piston8.60
10. External Cylinder (Outer Sleeve)41.00
11. Bit Guide Bush (Guided Sleeve)60.00
12. “O” Ring of Stop Ring2.20
13. Half Moons and Bit Retaing Ring (Stop Ring)0.02
14. Breakout Ring of Drive Chuck1.20
15. Chuck Nut (Drive Chuck)0.30
16. Drill Bit12.00
TECHNICAL DATA
Length (Without Bit)1465mm
Weight (Without Bit)182.00Kg
External DiameterØ185mm
Bit ShankQL80
Hole RangeØ195-Ø254
Connection ThreadAPI 4 1/2” Reg
Working Pressure1.0-2.5Mpa
Recommeded Rotation Speed15-25r/min
ADVANTAGES
High performance in hard and soft formations
Spares and services locally available
Faster drilling speed and lower air consumption
Fewer internal parts
All parts heat treated

Available Hammers