High-speed grinding for the Connecting rod holes:

Instead of traditional grinding process, Mariso has developed a unique process of high-speed grinding for the Connecting rod holes. This process can grind the two holes just with one-time fixture at the final procedure of the reconditioning to guarantee the high precision: strict parallelism between the two ends holes, good linearity of inner hole surface, and high verticality between the planes and inner holes.                                                                                                                                                          

Automatic grinding for connecting rod teeth:

Many diesel engine connecting rods have their connecting rod shafts and marine head combined by teeth, while the quality of the teeth depends highly on the teeth to teeth area and the surface smoothness of the R area. This is one of the most important factors that affect the operating condition and life-span of a connecting rod. Mariso is adopting an automatic grinding machine, which is developed uniquely by Mariso, to make sure that the teeth to teeth matching area can reach 90%, overcoming the low-efficiency and instability caused by manual labor.

Major reconditioning procedures

• Automatic grinding for the teeth of the connecting rod
• Pre-machining
• High-speed grinding of the both ends hole to restore to the original dimension
• Non-destructive testing
• Magnetic particle test