Hitachi 870-7 Tension Cylinder Assembly, Full Range Excavator Part

ميزات المنتج وتطبيقاته

Track Tension Adjustment (Core Function)Grease injection pushes the piston outward and moves the idler wheel forward to precisely tension the track and keep its sag within the standard range. It prevents track derailment, deviation and slippage caused by excessive looseness, and avoids accelerated wear, increased travel resistance and overheating due to over-tensioning.Dynamic Shock Absorption & Protection (Key Function)Built with a heavy-duty spring, it absorbs impacts and vibrations when traveling over rocks or uneven terrain, protecting the idler wheel, drive wheel, track roller, track and track frame. The spring compresses to release pressure under over-tension, and rebounds to its original position after impact, maintaining stable track tension.