・Suitable for use in an environment where tiny powders such as ceramic powder, carbon powder, paper powder, and metal powder (except welding slag) float
・Durability increased by 4 times (compared to standard products)
・Two lubricating retainers are installed on the rod side cylinder head
Prevent tiny powder below 30μm from intruding into the interior
・The lubricating retainer can make the piston rod upstroke the grease film, so that its durability is improved