AFSD4

4” High Air Pressure DTH Hammer with foot valve

4-inch DTH hammers find widespread use across industries such as mining, construction, geothermal drilling, and water well drilling.

These versatile tools are adept at efficiently creating blast holes in mining operations, foundation and utility holes in construction projects, geothermal boreholes for energy extraction, and water wells for essential resource access. Their adaptability and efficiency make them valuable instruments in various drilling applications, offering reliable performance in diverse geological conditions.

Replacement Parts | Item DescriptionWeight Kg
1. Top Sub (Back Head)6.50
2. “O” Ring of Top Sub0.01
3. Check Valve (Stop Valve)0.42
4. Spring0.04
5. Compression Buffer (Rubber)0.04
6. Control Tube (Air Distributor)2.20
7. Internal Cylinder (Internal Sleeve)2.50
8. Piston9.00
9. External Cylinder (Outer Sleeve)15.60
10. “O” Ring of Stop Ring0.02
11. Half Moons and Bit Retaing Ring (Stop Ring)0.20
12. Chuck Nut (Drive Chuck)4.00
13. Drill Bit---
TECHNICAL DATA
Length (Without Bit)1084mm
Weight (Without Bit)40.5Kg
External DiameterØ99mm
Bit ShankSD4
Hole RangeØ110-Ø135
Connection ThreadAPI 2 3/8” Reg
Working Pressure1.0-2.5Mpa
Recommeded Rotation Speed25-40r/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