AFSD 12A

BIG SIZE DTH HAMMER - 12'

A 12-inch DTH hammer is a powerful drilling tool commonly used in mining and construction, utilizing impactful hammering to drive the bit through rock and eliminate debris from the borehole.

Replacement Parts | Item DescriptionWeight Kg
1. Top Sub (Back Head)70.0
2. “O” Ring of Top Sub0.04
3. Breakout Ring Top Sub0.80
4. Check Valve (Stop Valve)2.00
5. Spring0.10
6. Control Tube (Air Distributor)16.0
7. Internal Cylinder (Internal Sleeve)25.0
8. Piston113.0
9. External Cylinder (Outer Sleeve)175.0
10. Bit Guide Bush (Guided Sleeve)25.0
11. “O” Ring of Stop Ring0.01
12. Half Moons and Bit Retaing Ring (Stop Ring)4.50
13. Guidance Package9.50
14. Breakout Ring of Drive Chuck0.80
15. Chuck Nut (Drive Chuck)48.0
16. Drill Bit---
TECHNICAL DATA
Length (Without Bit)1860mm
Weight (Without Bit)480.00Kg
External DiameterØ275mm
Bit ShankSD12
Hole RangeØ305-Ø445
Connection ThreadAPI 6 5/8” Reg
Working Pressure1.0-3.0Mpa
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