Epiroc COP 2238HD High Impact Energy Hydraulic Drifter for Quarry Construction Drilling

The COP 2238HD hydraulic drifter is engineered for quarry bench drilling, construction site rock excavation, and large-diameter production blasthole drilling where impact energy and sustained penetration rate directly determine project economics. Rated at 30 kW impact power with a percussion frequency of 50 Hz, this drifter delivers 600 J of single-blow energy to the shank adapter, enabling efficient drilling in abrasive and highly fractured rock conditions that typically challenge lighter drifters. The extended piston stroke design and oversized accumulator capacity support hole diameters from 76mm to 127mm across single-pass depths up to 6 meters, making it a direct-fit replacement on surface crawler rigs, DTH-converted top hammer rigs, and heavy-duty construction drill carriers.

The hydraulic circuit features a load-sensing variable displacement pump interface that automatically matches oil flow to actual drilling resistance, reducing fuel consumption by up to 18% compared to fixed-displacement systems during partial-load operation. A built-in percussion pressure monitoring port accepts standard 4-20mA sensors for real-time drill performance logging and rock mass characterization, providing mine geologists with empirical penetration rate data correlated to geological formations. The drifter housing is machined from a single nodular cast iron blank with internal oil galleries cast-in rather than drilled, eliminating potential leak paths at gallery intersection points and ensuring structural integrity under continuous 24-hour production cycles common in large open-pit operations.

• 30 kW Impact Output: Long-stroke piston mechanism generates 600 J per blow at 50 Hz percussion frequency, achieving 1.8-2.5 m/min penetration in 100mm diameter holes through abrasive sandstone and fractured limestone formations.
• Load-Sensing Hydraulic Interface: Variable displacement pump compatibility reduces fuel consumption by up to 18% during variable-load drilling by matching oil delivery to real-time resistance, substantially lowering per-meter drilling cost.
• Cast-In Oil Gallery Housing: Single-piece nodular cast iron housing with integral internal galleries eliminates O-ring junction leaks and withstands continuous 24-hour production duty cycles without structural fatigue.
• Oversized Dual Accumulators: High-capacity diaphragm accumulators on both pressure and return sides absorb peak pulsations exceeding 280 bar, extending hose service life and ensuring consistent percussion energy delivery regardless of carrier hydraulic system fluctuations.
• Wide Hole Diameter Capability: Accepts drill bits from 76mm to 127mm diameter with T45, T51, and GT60 shank adapter options, covering quarry production, pre-split, and buffer blasthole drilling from a single drifter model.
• Integrated Performance Monitoring: Standard 4-20mA pressure transmitter port on percussion circuit allows direct connection to drill monitoring systems, enabling real-time penetration rate logging and geological boundary detection during production drilling.

Designed for surface quarry bench drilling in limestone, sandstone, and granite aggregate operations, the COP 2238HD excels in production blasthole drilling from 89mm to 115mm at bench heights of 10-18 meters. It mounts directly onto crawler-based surface drill rigs including Epiroc FlexiROC and PowerROC series carriers, as well as compatible third-party rigs using standard saddle mounting patterns. In construction applications, the drifter handles hard rock excavation for highway cuts, dam foundation preparation, and pipeline trench drilling through competent bedrock. Its large-diameter capability also supports pre-split drilling along final pit walls in open-pit metal mines where precise blast perimeter control is critical for slope stability. For contractors operating mixed fleets, the COP 2238HD serves as a direct replacement upgrade from older COP 1838 and COP 2150 drifters, delivering higher impact energy and wider hole diameter range without carrier hydraulic system modification in most installations.

Each COP 2238HD hydraulic drifter is packed in a heavy-duty export-grade plywood crate with internal shock-absorbing foam blocks and vapor-phase corrosion inhibitor (VCI) packaging to protect machined surfaces during extended ocean and overland transport. All hydraulic ports are sealed with metal threaded plugs and the percussion chamber is charged with nitrogen to prevent internal oxidation. Every unit ships with a calibrated factory acceptance test report documenting impact energy measurement at three pressure setpoints, rotation torque verification, and hydraulic leak-down test results. Warranty covers 12 months or 2,500 percussion hours from commissioning date, including coverage for housing casting defects and premature accumulator diaphragm failure. Aftermarket support includes on-site commissioning assistance, preventive maintenance training for site maintenance crews, and express air-freight spare parts dispatch to major mining regions within 72 hours.