Pneumatic Air-Leg Rock Drill

YT28 Air-Leg Pneumatic Rock Drill for 34–42 mm Holes

Model:YT28

Selected configuration:Configuration to be confirmed

Selected reference:PFM-YT28

YT28 air-leg rock drill reference configuration: 26 kg, 80 × 60 mm cylinder/stroke, H22 × 108 shank and 34–42 mm range. The exact approved FT160-series suffix is quotation-controlled.

A YT28 reference configuration for preliminary matching. Final supplier model, air-leg interface, operating conditions and commercial terms are quotation-controlled.

  • YT28 model and 34–42 mm range aligned
  • Exact approved FT160-series suffix confirmed in quotation
  • Commercial terms made quotation-specific
Request a Configuration-Based Quote Compare all Air-Leg Rock Drills

Send the exact model or suffix, rock condition, hole diameter and depth, drilling direction, drill-steel interface, air pressure and flow, feed setup, quantity and delivery country.

At a Glance

Approx. 26 kgRock Drill Weight
Approx. 70 J at rated conditionsImpact Energy
≥34 Hz at 0.50 MPa; ≥36 Hz at 0.63 MPaImpact Frequency

Technical Specifications

Rock Drill WeightApprox. 26 kg
Impact EnergyApprox. 70 J at rated conditions
Impact Frequency≥34 Hz at 0.50 MPa; ≥36 Hz at 0.63 MPa
Air Consumption≤55 L/s at 0.50 MPa; ≤81 L/s at 0.63 MPa
Recommended Drilling Diameter34–42 mm
Working Air Pressure0.50–0.63 MPa at the tool inlet
Cylinder Diameter80 mm
Piston Stroke60 mm
Maximum Drilling DepthUp to approximately 5 m
Shank SpecificationH22 × 108 mm

Final interface dimensions, selected configuration and supply scope are stated in the formal quotation or approved drawing.

Compatibility and Required Interfaces

Drill Steels and Bits

H22 × 108 mm shank; 34–42 mm matched bit range

Tapered rod and bit system matched to hole depth, taper and rock condition

Confirm rod length, taper angle, bit diameter and bit design against the required hole depth, abrasiveness and local replacement preference.

Air Leg

Compatible FT160-series air leg

Air-leg configuration matched to drilling direction, feed length, working height and available space

Air-leg model naming and specifications can vary by manufacturer. Confirm the required feed stroke and installation interface against the supplied unit.

Line Oiler

FY200B or compatible in-line lubricator

Lubricator and pneumatic-tool oil suitable for the selected hose and air-supply configuration

Continuous lubrication is essential. Lubricator setting and oil grade must follow the supplied operating manual and site conditions.

Pneumatic Drilling Performance

Flapper-Valve Air Distribution

The valve system controls alternating compressed-air flow to the piston to support repeatable percussion and rotation cycles.

Buyer value

Supports stable drilling when air pressure at the tool inlet, lubrication and hose sizing are maintained within the required operating range.

Selection condition

Impact frequency and air consumption are pressure-specific. Hose losses, leakage and compressor capacity directly affect field performance.

Wet-Drilling and Air-Leg System

The YT28 is operated with water flushing and a compatible air leg to provide feed support during underground, tunneling and rock-excavation drilling.

Buyer value

Enables a complete drilling setup that combines percussion, feed support, flushing, drill steel and bit selection around the job-site conditions.

Selection condition

Confirm air-leg model and feed length, water supply, drilling direction, rod lengths and bit range before quotation.

Application Scenarios

  • Underground mining
  • Tunneling
  • Quarry and civil rock excavation

Confirm Before Ordering

Configuration Inputs

  • Air Supply: Size compressor capacity from the pressure-specific tool-demand reference and the maximum credible number of simultaneous tools. Add other simultaneous air users and measured leakage on a comparable flow-reference basis. Apply altitude, temperature and other site corrections only once to the compressor's delivered-capacity data, using the manufacturer's method; engineer distribution pressure loss separately. Verify dynamic pressure at the drill inlet under combined load.
  • Shank Geometry: Confirm exact ISO H22x108mm tapered hexagonal shank specification for strike alignment
  • Confirm the approved FT160-series suffix, mounting, retracted/extended length and feed travel for the quoted YT28 setup
  • System Lubrication: Use only a line oiler and rock-drill lubricant confirmed for the exact supplied model and operating temperature; confirm the applicable controlled manual and quoted supply scope before ordering.

Operating Limits

  • Max Rated Inlet Pressure: 0.63 MPa (91 PSI)
  • Minimum Functional Pressure: 0.4 MPa (58 PSI)
  • Max Recommended Water Pressure: 0.3 MPa (must be 0.1 MPa below air supply)
  • Air Hose: Confirm hose inside diameter from the pressure-specific required flow, total length, couplings, branch/header arrangement and allowable pressure drop. A local tool connection or short-hose reference does not size a long or shared upstream line.
  • The air-leg suffix is not fixed by this page; use only the approved suffix stated in the written quotation.

Supply Scope, MOQ and Delivery

Minimum Order QuantityConfirmed in written quotation
Lead TimeConfirmed in written quotation

Available Supply Configurations

  • Final packing list confirmed in the written quotation

Export Packing

Final packaging, corrosion protection, crate or pallet method and shipping marks are confirmed in the written quotation.

Warranty and After-Sales

Warranty, spare-parts scope and service terms are confirmed in the written quotation for the selected supplier configuration.

Safety and Maintenance Notes

Use only after the exact model, interface, operating pressure, hose, lubrication and supplied manual are confirmed. Follow local regulations, site risk assessment and required PPE.

Selection & Technical Guides

Use these guides to confirm compatibility, operating inputs, inspection points, and RFQ details before ordering.

YT24 vs YT28 Air-Leg Rock Drill: Air Demand, Hole Size, and Selection

YT28 vs YT29A Air-Leg Rock Drill: Hole Size, Air Demand, and Selection

YT28 Air Compressor Sizing Guide: Flow, Pressure, Hose and Multi-Drill Demand

YT28 Rock Drill Troubleshooting: Slow Drilling, Low Power, and Hard Starting

Air-Leg Rock Drill RFQ Checklist: 15 Specs Buyers Should Confirm Before Ordering

Order Documentation

Commercial invoice and packing list; any additional certificates are confirmed per order

Frequently Asked Questions

Is the YT28 suitable for my drilling application?
The YT28 is generally selected for wet blast-hole drilling in medium-hard and hard rock, with a recommended hole diameter of 34–42 mm and drilling depths up to approximately 5 m. For model selection, provide rock type, drilling direction, hole diameter, depth, air pressure at the tool and expected daily workload.
What air supply is required for one YT28?
The system must maintain the required pressure at the rock drill, not only at the compressor outlet. Published air consumption is up to approximately 55 L/s at 0.50 MPa and 81 L/s at 0.63 MPa. Allow additional compressor capacity for hose pressure loss, couplings, leakage, altitude and simultaneous pneumatic tools.
What lubrication and water-flushing conditions are required?
Continuous lubrication and wet drilling are essential. Use a compatible in-line lubricator with suitable pneumatic-tool oil, maintain water flushing, purge hoses before connection and check the air and water passages before each shift. Follow the supplied operating manual and local occupational-safety requirements.
Does the quotation include the air leg, lubricator, drill rods and bits?
Not automatically. The rock-drill body, air leg, lubricator, hoses, drill rods, bits and spare-parts package are listed separately unless the quotation clearly states that a complete drilling set is included. For a complete set, specify drilling direction, working height, rod lengths, hole diameter and delivery country.

Required Drill-Steel, Air and Feed Interfaces

A complete YT28 system may include an approved FT160-series air leg; the exact suffix, mounting and feed travel are confirmed in the written quotation.

Ready to Confirm the Configuration?

Request a Quote for YT28

We will confirm the drill body, shank and drill-steel interface, bit connection, dry or wet setup, air leg or feed, lubricator, hose and water setup, accessories, supply scope and export packing.

  • Product-specific quotation
  • Interface confirmation
  • Export packing options