The YPKC Coupling System, U.S. Patent No. 6,682,483, has one piece molded flexible body split sleeve flatted inserts.
Engineering plastic with 25% glass fiber obtains a very economic rotary shaft coupling with light weight, torsional rigidity, and zero backlash.
YPKC Couplings with flatted, split sleeve inserts, provide the easiest possible way to accommodate a change in shaft diamteres.
Unique one-piece molded construction isolates voltage differences between coupled shafts thereby preventing electro-corrosion.