Unistress Piston Ring Expander / UPRE

UPRE Unistress Piston Ring Expander

 

The Unistress Piston Ring Expander subject the ring to four forces as indicated and

therefore to a uniform moment throughout, except at the ends where it decreases rectilinearly towards zero.

 

• Ensures easy changing of piston rings without any risk for geometrical distortion of the ring,

leading to increased ring and liner life and reduced lube oil consumption.

 

• Patented technology creating uniform bending moment throughout the piston ring allowing for safe opening.

 

• Delivered adjusted and ready to use for all medium speed and slow speed engine bore sizes.