A rolling element interference preventer for a guide device prevents a number
of
rolling elements rolling at regular intervals in a continuous circulation path
of the guide device from interfering with each other. The rolling element interference
preventer is formed of a thermoplastic resin elastomer having a physical property
in accordance with an expression, (AB)C18, where A represents
a 10% elongation stress, B represents a tensile strength, and C represents a bending
modulus of elasticity.
