Full definition
Mechanical element connecting two rotating shafts while accommodating angular misalignment (up to 1-3°), parallel offset (up to 0.5-2 mm), and axial displacement. Common types include jaw (elastomer spider, L/GS series), grid (Falk Steelflex), flexible disc, and laminar designs. Absorbs vibration and shock loads, protecting bearings and seals. Selection per AGMA 9002 based on torque, RPM, and misalignment. Brands: Lovejoy, Rexnord, KTR, Siemens Flender. Service life 3-10 years depending on operating conditions.