P7D-1R1A-5A2B Hydraulic Pump for Epiroc DM45E | Part No. 57326274 | Mining Drill Main Pump

LIC Hydraulic’s P7D-1R1A-5A2B high-pressure axial piston pump is the premier power component engineered for Epiroc DM45E series rotary blasthole drills. Matching OEM Part Number 57326274, this pump provides the critical hydraulic force required for feed and rotation systems in extreme mining environments. We guarantee 100% Drop-in Interchangeability with original specifications, ensuring seamless field replacement without modifications. Every unit is subjected to 100% simulated mining load testing, ensuring robust performance under high-pressure cycles, high temperatures, and the abrasive dust typical of open-pit mining sites.

Technical Specifications (Bulleted List)

• Part Number: 57326274 (Epiroc / Atlas Copco)

• Full Model Code: P7D-1R1A-5A2B

• Target Equipment: DM45E Rotary Drill and related mining rigs

• Nominal Pressure: 350 bar (35 MPa / 5075 PSI)

• Peak Pressure: 420 bar (42 MPa / 6090 PSI)

• Pump Type: High-displacement Axial Piston Variable Pump

• Control Type: Constant Pressure / Load Sensing (5A2B configuration)

• Rotation: R (Right Hand / CW)

• Seals: Premium Viton (FKM) for high-temperature and chemical resilience

• Approx. Weight: 85 kg (Heavy-duty reinforced design)

Key Technical Advantages

• Mining-Grade Durability: Engineered with a high-tensile cast iron housing, the pump offers superior vibration dampening and structural integrity, absorbing hydraulic shocks generated during hard-rock drilling.

• Precision Load Sensing Intelligence: The integrated 5A2B compensator module automatically adjusts flow and pressure based on real-time bit load, reducing energy waste and preventing erratic tool movement.

• Micro-Finished Rotary Group: Pistons and valve plates are ground to micron tolerances, maintaining high volumetric efficiency and minimal internal leakage even under continuous 350-bar operation.

• High-Capacity Bearing System: Equipped with heavy-duty bearings optimized for contaminated environments, significantly extending the Mean Time Between Overhauls (MTBO) in mining operations.

Application Areas

• Open-Pit Mining: Primary hydraulic pump for DM45, DM45E, and DML drill series.

• Deep Hole Drilling: Powers the rotation head, feed system, and auxiliary hydraulic functions for mining rigs.

Expert Maintenance Tips

• Mandatory Case Priming: Always fill the pump housing with clean hydraulic oil through the highest case drain port before initial startup to prevent catastrophic dry-start damage.

• Contamination Management: Given the dusty nature of mining sites, analyze oil every 500 hours. Maintain a cleanliness level of ISO 4406 18/16/13 or better.

• Pilot Line Inspection: The 5A2B control logic relies on accurate pilot sensing. Ensure the pilot lines are free of air pockets to avoid sluggish response or pressure compensation failure.