The SMC RJ series of soft type shock-absorbers was originally intended for use with SMC's air slide table, rodless and rotary cylinders but was quickly adopted by a variety of applications in need of quick low speed stops such as small conveyors. This series uses a patented spiral groove design that offers improved durability and up to 30% better cushioning time, and is fully compatible with the existing Series RB absorbers. It is available in three versions of energy absorbency with different stroke lengths: 1 J / 6 mm, 3 J / 7 mm and 10 J / 12 mm.