Bushing 15022978 | High-Precision Alloy Steel Sleeve for Hydraulic Rock Drills

High-Precision Alloy Steel Bushing for Hydraulic Rock Drills
Engineered for extreme underground mining conditions, this bushing ensures reliable performance in high-vibration hydraulic rock drill systems. Constructed from 20CrMnTi alloy steel with 58-62 HRC surface hardness and 1200 MPa tensile strength, it withstands continuous dynamic loads while resisting abrasion and corrosion in harsh environments .

Technical Specifications & Design
The bushing adheres to DIN ISO 7181 standards (38 mm inner diameter, 55 mm outer diameter, 80 mm length) for precision fit in hydraulic cylinder assemblies and drill rig components . Its nitrided surface treatment (0.3-0.5 mm layer depth, 1000 HV hardness) provides superior wear resistance, extending service life by 40% compared to standard electroplated coatings . The 180 N·m threaded connection torque and 350 MPa maximum working pressure make it suitable for heavy-duty hydraulic applications .