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YT28 Air Leg Rock Drill

Powerful New Pneumatic Tools for Mining 

1. Product Overview

The Shenli YT28 air leg rock drill is a widely recognized lightweight pneumatic rock drill, categorized as a premium jackleg rock drill and multi-functional pusher leg drill engineered for global underground mining and civil tunneling projects. As a compact hand held rock drill weighing only 26kg, this mining pneumatic rock drill delivers steady percussion performance with optimized air flow design, making it a go-to jack hammer mining drill for teams prioritizing mobility and continuous shift productivity.
Distinct from heavier YT-series counterparts, the YT28 rock drill balances controlled impact energy and reduced air demand, ideal for small-to-medium mine drifts, narrow tunnel cross-sections, and open-pit quarry rock breaking. Classified as a standard wet rock drill, this tunneling rock drill complies with global occupational dust safety standards, supporting horizontal, upward, downward and angled blast hole drilling across granite, basalt and other hard rock formations (rock firmness coefficient f=8–18). It serves as a flexible underground mining rock drill, applicable as coal mining rock drill, gold mining rock drill, copper mining rock drill and general quarry rock drill for blasting and anchor bolt installation tasks.
This pneumatic air leg rock drill pairs seamlessly with FT160BC telescopic air leg and transparent FY200B lubricator assembly, forming a complete rock drilling machine kit with simplified assembly steps, cutting field setup time for contractors and mine operators worldwide.
Quality

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SPECIFICATIONS for YT series pneumatic rock drilling machine with air leg
Model	YT28	YT27	YT29A	YT24C	TY24
Weight	26kgs	27kgs	26.5kgs	24kgs	24kgs
Length	661mm	668mm	659mm	628mm	678mm
Air pressure	0.4-0.63Mpa	0.4-0.63Mpa	0.4-0.63Mpa	0.4-0.63Mpa	0.4-0.63Mpa
Impact frequency	≧37HZ	≧39HZ	≧39HZ	≧37HZ	≧31HZ
Air consumption	≦81L/s	≦86L/s	≦88L/s	≦80L/s	≦67L/s
Impact energy	≧70J	≧75J	≧78J	≧65J	≧65J
Cylinder*stroke	80mm*60mm	80mm*60mm	82mm*60mm	76mm*60mm	70mm*70mm
Air pipe diameter	25mm	19mm	25mm	25mm	19mm
Shank dimension	22*108mm	22*108mm	22*108mm	22*108mm	22*108mm
Drilling depth	5m	5m	5m	5m	5m
Bit diameter	34-42mm	34-45mm	34-45mm	34-42mm	34-42mm

2. Core Competitive Advantages (Keyword Rich Unique Content)

2.1 Lightweight Ergonomic Portable Rock Drill Design

At a net weight of just 26kg and total body length 661mm, the YT28 jackleg drill minimizes upper body strain during all-day wet rock drill operations. All control levers are clustered around the main grip handle for one-handed operation adjustment, eliminating repeated arm stretching. The integrated shock absorption spring set lowers vibration transfer to operators, a critical upgrade for long-duration underground mining rock drill work in confined tunnel spaces.

2.2 Optimized Air System for Lower Consumption & Stable Output

This YT28 pneumatic rock drill features refined internal air valve architecture limiting total air usage to ≤81 L/s, allowing a single standard air compressor unit to power multiple rock drilling machine units simultaneously. It maintains a consistent 37Hz minimum percussion frequency under rated 0.63Mpa working air pressure, generating ≥70J stable impact energy without power fluctuation during deep blast hole drilling. The built-in high-torque rotation assembly prevents drill bit jamming, a common pain point for low-grade hard rock drill equipment.

2.3 Integrated Air-Water Interlock Wet Drilling Mechanism

Unlike basic pusher leg drill models lacking linkage control, the YT28 air leg rock drill adopts full air-water synchronous interlock technology. Operators must activate water supply before compressed air flow, strictly prohibiting dry drilling to suppress silica dust hazards. Pressurized 0.3Mpa service water mixes with exhaust air to flush rock cuttings thoroughly from 34–42mm blast holes, preserving straight bore geometry and extending tungsten drill bit service life. The detachable silencer hood freely redirects exhaust airflow to avoid worker exposure to hot waste gas.

2.4 Wide Cross-Site Compatibility as Multi-Scenario Blast Hole Drill

Versatility defines this YT28 rock drill, with full adaptability across mining, transportation and water conservancy verticals:

• Underground metal & coal mines: Coal mining rock drill, gold mining rock drill, copper mining rock drill for drift excavation, stope blasting and roof anchor drilling
• Transportation infrastructure: Tunneling rock drill for highway, railway and metro tunnel blast hole creation
• Open-pit operations: Quarry rock drill for limestone, granite quarry stone separation blasting
• Hydropower & municipal works: Slope stabilization anchor drilling, dam foundation rock excavation, small-scale concrete breaking

It delivers a maximum effective drilling depth of 5 meters with adjustable 34–42mm bore diameter, fully matching universal blasting construction parameters used across Asia, Africa and Latin American construction markets.

2.5 Forged Wear-Resistant Components & Low Maintenance Cost

All load-bearing core parts (piston, valve body, shank sleeve) of the Shenli YT28 jack hammer mining drill are hot-forged high-alloy steel with anti-corrosion heat treatment, far more durable than cast alternatives. Sealing components utilize oil-resistant composite rubber to withstand long-term contact with water and compressed air. Standardized spare part dimensions enable interchangeability with mainstream YT-series rock drill accessories, reducing inventory pressure for mine maintenance teams and shortening equipment downtime during field repairs.

3. Working Mechanism Explanation

As a classic pneumatic rock drill, the YT28 pusher leg drill relies on industrial compressed air as its sole power source, following a four-stage integrated workflow:

1. Compressed air enters the internal valve chamber to drive the 80mm diameter piston with 60mm reciprocating stroke, delivering repeated heavy blows to the R22×108mm drill shank to fracture hard rock strata.
2. A built-in planetary rotation gear rotates the drill steel slightly after every impact stroke, ensuring uniform rock cutting and preventing bit wedging inside blast holes.
3. The matched FT160BC air leg utilizes air pressure to provide automatic forward thrust, removing the need for manual body weight pressure and drastically cutting operator fatigue.
4. Linked water pipeline delivers flushing water to the drill bit tip; mixed air-water flow clears crushed rock debris continuously, achieving clean boreholes while meeting mandatory wet rock drill dust suppression regulations.

This all-in-one percussion-rotation-feed-flushing system makes the YT28 jackleg drill a cost-effective mining pneumatic rock drill choice for both long tunnel drives and small-scale quarry blasting projects.

4. Full Industrial Application Breakdown

4.1 Underground Mining Drilling Operations

As a dedicated underground mining rock drill, the YT28 jackleg drill supports 360-degree multi-angle hole drilling for coal mine roadway development, gold ore stope blasting, copper mine crossheading excavation and metal mine roof anchor bolt installation. Its compact frame navigates narrow underground drifts with limited clearance that larger rock drilling machine models cannot access.

4.2 Tunnel & Transportation Construction

This tunneling rock drill is widely deployed for road tunnel, rail tunnel and urban underground passage blast hole drilling. Its lightweight build simplifies frequent repositioning on uneven tunnel working faces, while consistent impact power accelerates excavation progress for medium-hard rock strata.

4.3 Stone Quarry Open-Pit Blasting

Professional quarry rock drill solution for granite, basalt and limestone open pit stone splitting. The adjustable 34–42mm bore diameter aligns with standard quarry blasting layout requirements, and the strong bore cleaning capability avoids debris blockages that slow continuous drilling cycles.

4.4 Hydropower & Civil Engineering Works

Ideal wet rock drill for dam foundation excavation, mountain landslide slope stabilization anchor drilling, municipal road foundation trenching and water diversion tunnel rock breaking. The mandatory air-water linkage design satisfies strict environmental dust control policies enforced on global construction sites.

4.5 Small-Scale Demolition & Special Rock Works

Suited for military rock engineering, landscaping rock shaping, secondary rock fragmentation and small concrete demolition projects where portable jack hammer mining drill mobility is a core operational requirement.

5. Standardized Safe Operation Protocols

1. Pre-job full equipment inspection: Examine air/water hoses, pipe connectors, oil feeder liquid level and all moving rock drill spare parts for leakage or damage; clear loose unstable rock fragments from the drilling working face before startup.
2. Strict wet drilling procedure: Activate water supply valve first, then open compressed air valve when commencing drilling; cut off air supply prior to shutting down water flow once work finishes. Never run dry drilling operations.
3. Mandatory personal protective gear: Operators must wear safety helmets, anti-noise earmuffs, impact-resistant safety goggles and anti-slip work gloves; do not position the body directly in front of the drill steel to avoid injury from broken shanks.
4. Step-by-step drilling operation: Start the YT28 pneumatic rock drill on low speed to set the blast hole, shift to full power after drilling 15–20cm depth; avoid sustained overload drilling to protect internal piston and valve assemblies.
5. Post-shutdown maintenance routine: Disconnect all air and water supply lines, wash residual rock dust from the YT28 air leg rock drill body, drain accumulated water from the FT160BC air leg, and refill lubricant into the FY200B oil feeder before storage.

6. Factory Manufacturing & Global After-Sales Support

Hebei Shenli Pneumatic Machinery is a certified ISO9001 and CE factory specializing in YT-series air leg rock drill, pusher leg drill and complete rock drilling machine accessory production. All YT28 jackleg drill units pass full outgoing performance testing before shipment, with 100% finished product qualification rate guaranteed.

• Minimum Order Quantity: 1 unit; custom OEM logo, machine paint color and export packaging available for bulk orders
• Warranty Policy: 3-month warranty covering all core components, permanent free remote technical operation guidance
• Spare Parts Supply: Full range of YT28 replacement parts kept in domestic warehouse for fast global dispatch
• Acceptable Payment Terms: 30% T/T deposit, 70% balance paid prior to delivery; support FOB, CIF, CFR, EXW, CPT international trade clauses
• Global Logistics Options: Express courier (DHL/Fedex/TNT/UPS) for orders below USD1000; sea freight / air freight for bulk orders of 3 sets or more, complete order tracking and scheduled delivery assurance

Detailed introduction

YT28 Air Leg Rock Drill

Centralized operating system, flexible startup, combination of pneumatic and water, convenient usage and maintenance.low noise, low vibration, energy-efficient, durable wearing-products, strong ability in washing blast-holes and high

YT28

YT28 Air Leg Rock Drill

Is suitable for drilling horizontal or tiptilted blast-hole in medium hard or solid hard rock (f=8~18). It is the indispensabletool in mining, railway, transportation, water conservancy construction and earthwork projects

Advantages

YT28 Air Leg Rock Drill

Can be used with the air leg FT160BC, equipped with transparent shell type FY200B oil tank to observe oil level, adjust oilquantity and ensure fine lubrication.

Oil feeder

DETAIL VIEW

GUARANTEED SAFE & SECURE CHECKOUT

· Tracking order traceability.

· On-time delivery guarantee

· 100% qroduct qualification rate

Delivery for :

Express delivery

For the Goods’ Value lower than USD1000 Like 1set or 2 set. We need send it to you by Express.Please tell us your city and postcode for the courier cost.

 

Time

Delivery by sea: After it was delivered to the seaport . We will tell you the shipping time and arrival time .

Sea Freight

For the Goods’ Value more than USD 1000.Like ≥3 set. We could send it to you by sea. Please tell us your seaport for the Freight cost,In addition, we can also help you consult the shipping price

Air Freight

Delivery by Express to your door (DHL/TNT/Fedex/UPS etc ) or by air to your city airport . We will tell you the Express tracking number .

Freight Forwarding

If you have shipping agent in china. please let your agent contact us.

 

Services

Deliver it to the warehouse which you have requested . We will tell you logistic or express tracking number .

FAQ：

1. : Are you factory or trade company?
A: We are factory. And we have ourselves trading company.2: Warranty terms of your machine?
A: 3 months for the core components and technical support according to your needs.3: Will you provide some spare parts of the machines?
A: Yes, we have most of the spare parts in stock.

4: Which payment term can you accept?
A: 30% T/T in advanced, 70% T/T before the delivery.

5: Can you accept OEM orders?
A: Yes, we have high specialized and rich experienced team, OEM orders are highly welcome.

6: Which trade term can you accept?
A: FOB, CIF, CFR, EXW, CPT, etc.