Narrow tunnel profiles require precise drilling to avoid overbreak. The YT28 provides controlled impact energy, allowing operators to shape tunnel faces accurately.
This precision reduces excess excavation and lowers material handling costs later in the construction process.
Branding
QUALITY
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Our factory prides itself on strict quality control, from vacuum heat treatment of core components to field-simulated performance testing of every finished drill. We collaborate with research institutions to optimize product durability and efficiency, ensuring the YT28 meets global safety and environmental standards. Whether for mining, water conservancy, or transportation tunnel projects, the YT28 stands out as a reliable solution that balances precision, efficiency, and cost-effectiveness—testament to our commitment to crafting top-tier rock drilling machinery.
As a professional manufacturer with over 15 years of experience in rock drilling machinery, we design the YT28 air-leg rock drill to meet the rigorous demands of underground mining and tunnel construction. This pneumatic-powered equipment weighs 26kg, features an impact energy of ≥70J, and supports drilling diameters ranging from 34mm to 45mm with a maximum depth of 5 meters—ideal for medium to hard rock formations with a firmness coefficient ≤6. Its compact structure and moderate height enable it to operate seamlessly in narrow spaces, while the integrated muffler significantly reduces noise pollution, improving on-site working conditions.
Using the YT28 is straightforward with proper adherence to operational protocols. Before use, operators must clean internal components to remove anti-rust oil, check the drill shank for cracks, and ensure unobstructed water needles to prevent dry drilling. Start the machine at low pressure (0.3MPa) for a 10-minute test run, then gradually increase air pressure to the optimal 0.5-0.63MPa range during operation. Adjust the air leg’s thrust slowly when initiating drilling to avoid hole deviation, and utilize the air-water linkage system for effective dust suppression. Post-operation, always disconnect the water pipe first, run the machine briefly to blow out residual moisture, and store it in a safe, dry area to prevent corrosion.
Mines switching from ordinary rock drills to the YT28 have reported remarkable improvements. Traditional drills often lack impact control, leading to 15-20% overbreak in narrow tunnels and increasing material disposal costs by up to 30%. Their low drilling speed—usually 0.3-0.5 meters per minute in hard rock—also extends project timelines. In contrast, the YT28 achieves 0.8-1.2 meters per minute in similar conditions, cutting drilling time by 40%. Its precise impact control reduces overbreak to less than 5%, and wear parts last three times longer than those of ordinary models, slashing maintenance costs. Additionally, the YT28’s centralized control handle and flexible air leg adjustment reduce operator fatigue, a common complaint with older equipment.
Post time: Jan-08-2026
