If you look at the spec sheet of the Y24 hand-held rock drill, you can immediately see it’s built as a serious working tool, not a light DIY toy. This model is a robust Pneumatic jack hammer with enough weight, stroke and air flow to handle demanding jobs in mining, quarrying and construction.
The Y24 is a 24 kg hand held jack hammer with a 70 mm cylinder body, a long 70 mm piston stroke and an impact frequency of ≥27 Hz. It runs at an operating air pressure of 0.4–0.63 MPa, with air consumption ≤50 L/s and uses standard 22 × 108 ±1 mm tapered shank steels. Bit diameter is designed for 34–42 mm holes, which covers a very common range in underground drilling.
Key Technical Specifications of the Y24 Jack Hammer
These are the main data points you can show customers:
Model: Y24 hand-held rock drill
Type: Pneumatic jack hammer / hand held jack hammer
Weight: 24 kg
Operating air pressure: 0.4–0.63 MPa
Overall length: 604 mm
Frequency of impact: ≥27 Hz
Diameter of cylinder body: 70 mm
Piston stroke: 70 mm
Air consumption: ≤50 L/s
Specification of bit shank: 22 × 108 ±1 mm
Recommended drill bit diameter: 34–42 mm
Inner diameter of air pipe: 19 mm
Oil lubricator: FY200B
Oil capacity: 200 ml
Even without a long description, these numbers tell an experienced user quite a lot:
24 kg puts the Y24 in the “heavy” hand-held range – more stable, less vibration jump.
70 mm cylinder + 70 mm stroke means high single-blow energy.
≥27 Hz impact frequency gives a good balance of power and speed.
≤50 L/s air consumption with 19 mm air hose points to a strong Pneumatic jack hammer that needs a solid air supply, but not an extreme one.
Standard 22 × 108 mm shank and 34–42 mm bit range make it easy to use existing steels and bits on site.
What These Numbers Mean in Real Work
When you combine these parameters with general rock drill theory:
Operating air pressure 0.4–0.63 MPa
The Y24 is designed to still work at 0.4 MPa, but it has room to go up to 0.63 MPa when the job demands more energy. In practice, most operators will aim for something like 0.5–0.6 MPa at the drill during drilling, which is the “sweet spot” between efficiency, drilling speed and tool life.70 mm cylinder, 70 mm stroke, ≥27 Hz impact
A larger cylinder and longer stroke mean higher impact energy per blow. Even if the frequency (≥27 Hz) is a bit lower than some lighter tools, each blow hits harder. For 34–42 mm bits in hard or medium-hard rock, this is exactly what you want: strong blows that keep the bit cutting instead of just rubbing.Air consumption ≤50 L/s and 19 mm air pipe
Up to 50 L/s (about 3 m³/min) is a serious flow rate. That’s why the spec requires a 19 mm inner-diameter air pipe – anything smaller and you lose too much pressure on the way to the jack hammer. In return, you get consistent power and good hole flushing.FY200B oil lubricator with 200 ml oil capacity
The built-in FY200B lubricator with 200 ml capacity is there to make maintenance easier. It ensures that this Pneumatic jack hammer gets oil continuously during work, which protects internal parts and keeps the 70 mm piston and valves running smoothly.
Overall, the Y24’s parameters point to a durable, high-impact hand held jack hammer aimed at production drilling in tough conditions.
How the Y24 Pneumatic Jack Hammer Works
The Y24 follows the classic drill principle you described in your product knowledge: impact + rotation + feed + flushing.
Compressed air at 0.4–0.63 MPa flows through the 19 mm air hose into the 70 mm cylinder body.
Inside, the piston moves up and down with a 70 mm stroke, striking the tail of the 22 × 108 mm drill steel at ≥27 blows per second.
Each blow sends a high-energy stress wave through the steel to the bit, which fractures rock at the bottom of the 34–42 mm hole.
Between blows, the drill steel rotates a small angle, so every impact hits fresh rock and the bit teeth can cut efficiently.
Air for flushing (and water, if used with a water attachment) carries rock chips out of the hole, keeping the bit free to cut and reducing dust.
The FY200B lubricator meters oil into the air stream, lubricating the internal moving parts of the Pneumatic jack hammer while it runs.
Because it uses the widely adopted 22 × 108 ±1 mm shank, the Y24 works with the same tapered rods and bits as many other hand held jack hammer models, simplifying tool management across a fleet.
Where the Y24 Hand Held Jack Hammer Is a Good Fit
Judging from the specs and general usage patterns, the Y24 is well suited to:
Mining and quarry production drilling
The 24 kg weight, 70 mm cylinder, 70 mm stroke and ≥27 Hz impact frequency make it suitable for drilling blast holes with 34–42 mm bits in medium-hard and hard rock.Tunnel and small heading work
At 604 mm overall length, the Y24 is compact enough for tight faces, while the strong blow energy and 0.4–0.63 MPa working pressure range give enough flexibility for different rock conditions.Job sites with solid but not huge air supply
With air consumption ≤50 L/s, you don’t necessarily need the largest compressor on the market, but you do need a reliable unit that can maintain pressure and flow. For many small to medium mines and contractors, this is an acceptable balance.Users who already run 22 × 108 mm steels
The Y24 can easily join an existing fleet where other hand held jack hammer or rock drill models use the same shank.
Questions Customers Usually Ask About the Y24 Rock Drill
Based on the sort of questions in your existing Q&A and general field experience, here are some typical concerns and how you can answer them clearly.
1. What compressor do I need to run a Y24 Pneumatic jack hammer?
The Y24 technical data says:
Operating air pressure: 0.4–0.63 MPa
Air consumption: ≤50 L/s
Air pipe inner diameter: 19 mm
For one Y24:
You should plan for a compressor that can provide at least 3.0–3.5 m³/min at around 0.6–0.7 MPa, so that after hose and line losses, you still have about 0.5–0.6 MPa at the jack hammer while drilling.
Always use a 19 mm inner-diameter air hose over the main run to reduce pressure drop.
If you want to run two or three Y24 drills together, multiply the flow requirement accordingly (e.g., ~6–9 m³/min) and leave some margin. This mirrors the general rule in your product knowledge: what counts is not just compressor pressure, but the real working pressure at the drill under load.
2. Isn’t 24 kg too heavy for a hand held jack hammer?
The spec lists:
Weight: 24 kg
Overall length: 604 mm
In the rock drill world, anything under about 30 kg is still considered hand-held. At 24 kg:
The Y24 is on the heavier side of the hand held jack hammer class, which actually helps stability when drilling 34–42 mm holes in hard rock.
A bit more weight means the tool jumps less and stays in contact with the rock better, allowing the 70 mm stroke to transfer energy more effectively.
Of course, 24 kg is not a “light” tool, but for experienced operators, especially in downward and horizontal holes, it is a familiar and manageable weight.
3. How fast can the Y24 actually drill?
While the data sheet doesn’t give a specific penetration rate, you can infer performance from:
Impact frequency: ≥27 Hz
Cylinder diameter: 70 mm
Piston stroke: 70 mm
Bit diameter: 34–42 mm
Operating air pressure: 0.4–0.63 MPa
Putting this together:
A ≥27 Hz impact frequency with a large 70 mm cylinder and long stroke suggests strong single-blow energy, designed more for deep or hard-rock holes than for light, rapid shallow drilling.
In medium-hard rock, running at around 0.5–0.6 MPa, users can expect competitive drilling speed for 34–42 mm blast holes compared to other heavy-duty Pneumatic jack hammers.
Actual meters per minute will, as always, depend on rock hardness, bit condition, and whether pressure at the drill stays within the recommended range.
4. What bit size and shank does the Y24 use? Can I share steels with other tools?
The specs say:
Bit shank: 22 × 108 ±1 mm
Drill bit diameter range: 34–42 mm
This is good news for most users:
22 × 108 mm is one of the most common tapered shank sizes in mining and construction. If your site already uses 22 × 108 steels, the Y24 can normally share them with your other hand held jack hammer models.
The 34–42 mm recommended diameter covers many typical blast and anchor hole sizes. Using bits within this range ensures the impact energy from the 70 mm cylinder is well matched to the cutting load.
5. How should I set air and lubrication for best life and performance?
From the Y24 data:
Operating air pressure: 0.4–0.63 MPa
Air pipe inner diameter: 19 mm
Oil lubricator: FY200B
Oil capacity: 200 ml
Good practice based on your product knowledge:
Set the compressor so you can maintain about 0.5–0.6 MPa at the drill when the Y24 is hitting. Check with a gauge close to the machine, not only at the compressor.
Use a proper rock drill oil in the FY200B lubricator, fill it to around its 200 ml capacity, and adjust the drip rate to the manufacturer’s recommendation so that internal parts get enough oil but not too much waste.
Avoid running for long periods above about 0.63 MPa, because although the jack hammer can withstand it, wear will increase noticeably.
With correct pressure and lubrication, the piston, cylinder, valves and shank end of the Y24 will last much longer and keep their original performance.
6. What daily maintenance does the Y24 hand-held rock drill need?
Maintenance is simple but important:
Before shift:
Blow out the 19 mm air hose to remove water and debris.
Check the FY200B lubricator oil level and refill with clean rock drill oil if necessary (up to 200 ml).
During operation:
Listen for changes in sound; a clear metallic knock or sudden change in pitch can indicate lubrication or pressure issues.
Periodically check all bolts, clamps and hose joints – 24 kg and ≥27 Hz impact create vibration that can slowly loosen hardware.
After shift:
Shut off any water first, then run the Pneumatic jack hammer briefly on air only to clear moisture.
Wipe the exterior, check the shank area for wear, and store the drill in a dry place.
These steps follow directly from your general rock drill guidelines and are usually enough to keep the Y24 reliable in everyday service.
Conclusion: A Strong, Reliable Pneumatic Jack Hammer for Serious Work
Putting all of this together, the Y24 hand-held rock drill stands out as a heavy-duty hand held jack hammer designed for operators who need power and durability more than low weight:
24 kg body and 604 mm length for stability and control
70 mm cylinder body, 70 mm piston stroke, ≥27 Hz impact frequency for high blow energy
Operating air pressure 0.4–0.63 MPa with air consumption ≤50 L/s through a 19 mm air hose
Standard 22 × 108 ±1 mm shank and 34–42 mm bit diameter range for easy tooling compatibility
FY200B oil lubricator with 200 ml capacity to keep internal parts protected
For mines, quarries and contractors who drill a lot of 34–42 mm blast or anchor holes in hard or medium-hard rock, the Y24 is a practical, field-proven Pneumatic jack hammer. It combines strong impact with common consumables and straightforward maintenance, making it a solid addition to any fleet of hand held jack hammer tools.