Part No.: 3115336500 Name: Shaft Seal / Oil Seal Brand: Epiroc (Formerly Atlas Copco) Application Model: RD22U Electric Hammer. Also applied to the rotating and drive end sealing of small hydraulic rock drills in COP series. Function: Prevent oil leakage, dust and slurry ingress at the main rotating shaft to protect bearings and internal gears. Structure: Single-lip / Double-lip encapsulated oil seal with metal frame and rubber coating. Weight: Approx. 0.1–0.2 kg Alternative Names: Oil Seal, Rotary Shaft Seal

Material: NBR (Nitrile Butadiene Rubber) with steel frame Applicable Shaft Diameter: Standard φ22 mm for RD22U main shaft Pressure Resistance: ≤ 10 bar (for low-pressure lubrication / gearbox) Temperature Range: -20℃ ~ +100℃ Linear Speed: ≤ 8 m/s Applicable Media: Gear oil, hydraulic oil, grease

Clean the shaft and housing thoroughly before installation to remove burrs and rust. Install the seal with the lip facing the oil side (towards gearbox / oil chamber). Press the outer ring in gently to avoid deformation; apply a small amount of grease on the seal lip. Rotate the shaft manually after installation to ensure no jamming or abnormal wear.