29-23G Two-stage Diesel Skid-mounted Screw Air Compressor
DTH Hammer for Water Well Drilling Rigs: Technical & Field Guide
Specifications at a Glance
|
Model |
KSZJ-23/23 |
KSZJ-29/23 |
|
Nominal Volume Flow, m³/min |
23 |
29 |
|
Rated Discharge Pressure, MPa |
2.3 |
2.3 |
|
Unit Weight, kg |
4850 |
4850 |
|
Overall Dimension (L×W×H), mm |
3500×1950×2030 |
3500×1950×2030 |
|
Manufacturer |
Yuchai |
Yuchai |
|
Model |
YC6MK340L-K30 |
YC6MK400L-K30 |
|
Type |
Vertical, In-line, Water-cooled |
Vertical, In-line, Water-cooled |
|
Intake Mode |
Turbocharged & Intercooled |
Turbocharged & Intercooled |
|
Bore × Stroke × Cylinder Qty |
120×145×6 |
120×145×6 |
|
Displacement, L |
9.839 |
9.839 |
|
Rated Speed, r/min |
1800 |
1800 |
|
Unloading Speed, r/min |
1400 |
1400 |
|
Rated Power, kW (HP) |
250 (340) |
288 (400) |
|
Engine Oil Capacity, L |
28 |
28 |
|
Fuel Tank Capacity, L |
350 |
350 |
|
Electrical System Voltage, V |
24 |
24 |
|
Airend Model |
SKY11G165 |
SKY11G194 |
|
Compression Stage |
2 |
2 |
|
Compressor Oil Capacity, L |
65 |
65 |
|
Air Supply Valve - Spec. & Qty. |
G2×1, G3/4×1 |
G2×1, G3/4×1 |
Quick Tip: Pair it with the 29/23G Two-stage Diesel Skid-mounted Screw Air Compressor to keep the bottom of the hole clean. If cuttings aren't cleared fast, your carbide buttons wear out twice as fast.
Core Build & Practical Advantages
Solid Alloy Steel Body:
Made from heavy-duty nickel-chromium-molybdenum alloy steel. It handles high-frequency impact loads day in and day out without cracking at the shoulders.
Valveless Air Distribution:
The internal structure uses a simple valveless design. Fewer small parts inside mean fewer things can break or clog when working in dusty, harsh conditions.
Efficient Air Cycle:
Engineered to maximize stroke energy per cycle while keeping air consumption reasonable, reducing strain on your power source.
Direct Field Application & Overview
When you are out at a deep-well site drilling through hard granite or mixed strata, the last thing you want is a sluggish hammer that slows down your entire rig. This DTH (Down-The-Hole) hammer is built for field crews who need consistent impact energy without constant maintenance headaches.
By delivering direct percussion straight to the bit at the bottom of the hole, it cuts down the massive energy losses you normally get with long string rods. Whether you are tackling municipal water projects or rural irrigation, it maintains a steady penetration rate when the rock gets tough.
For high-pressure jobs, pairing this hammer with a reliable rig setup-such as the 29/23G Two-stage Diesel Skid-mounted Screw Air Compressor-delivers the heavy, steady CFM and high bar pressure needed to clear cuttings instantly, preventing your bit from getting stuck or re-crushing rock.
Frequently Asked Questions (FAQ)
Q1: How do I pick the right hammer size for my rig?
It depends entirely on your target hole diameter and what kind of rock you are hitting. Make sure your rig's rotation torque and compressor output match up. If you are doing deep, high-pressure drilling, a heavy-duty setup like the 29/23G Two-stage Diesel Skid-mounted Screw Air Compressor is essential to keep the air velocity up.
Q2: How often should I grease it on-site?
Use high-grade rock drill oil consistently; running it dry will ruin the internal piston fast. Pull it apart for a quick check every 200 drilling hours, clear out any grit, and coat the internal parts with rust inhibitor if it's sitting in the yard between jobs.
Q3: What happens if I hit water or muddy layers down there?
Don't worry about muddy backflow. The hammer has a built-in check valve that shuts as soon as the air supply drops, keeping muddy slurry and abrasive water out of the working chamber.
Q4: Will it fit my current bits?
Yes. We thread them to match global standard shank profiles-including COP, DHD, QL, and SD series-so you won't need to hunt down special proprietary bits.
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