The Hydraulic Cylinder (OEM Part No. 3128311605) is a hydraulic spare component compatible with the Simba S7D underground drilling rig. Manufactured from high-strength alloy steel, it is designed for the hydraulic system cylinder assembly position. The hydraulic cylinder converts hydraulic pressure into controlled linear movement, providing accurate positioning and reliable mechanical operation within the drilling system. Its durable construction ensures strong performance, precise fitting, and long service life under demanding underground mining conditions. This OEM replacement hydraulic cylinder helps maintain hydraulic system efficiency, equipment stability, and continuous drilling performance.