Miniature linear guides offer Super P4 grade precision
NSK's PU series miniature stainless steel linear guides offer Super P4
grade precision and feature resin re-circulation circuits for smooth,
quiet motion. Claimed to be at least 20% lighter than equivalent
competing products, PU guides have side seals to both faces of the ball
slide and additional protection in the form of a labyrinth structure on
the bottom face of the ball slider.