Sliding member for chain system, chain guide, chain tensioner and chain system

A sliding member for a chain system, used in the chain system and made of a resin composition, the resin composition comprising:

• a matrix resin which is a thermoplastic resin having a number average molecular weight of not less than 20000;
• and
• a fluororesin in an amount ranging from 5 to 40% by mass based on a total amount of the resin composition, the fluororesin having a surface energy ranging from 200 to 400 μN/cm and a visible light transmittance of not less than 10% at a wavelength of 600 nm.

A chain guide comprising:

• a shoe material having a sliding section, the sliding section being provided with a sliding member for a chain system, used in the chain system and made of a resin composition,
• the resin composition including a matrix resin which is a thermoplastic resin having a number average molecular weight of not less than 20000;
• and a fluororesin in an amount ranging from 5 to 40% by mass based on a total amount of the resin composition, the fluororesin having a surface energy ranging from 200 to 400 μN/cm and a visible light transmittance of not less than 10% at a wavelength of 600 nm.

A chain tensioner comprising:

• a shoe material having a sliding section, the sliding section being provided with a sliding member for a chain system, used in the chain system and made of a resin composition,
• the resin composition including a matrix resin which is a thermoplastic resin having a number average molecular weight of not less than 20000;
• and a fluororesin in an amount ranging from 5 to 40% by mass based on a total amount of the resin composition, the fluororesin having a surface energy ranging from 200 to 400 μN/cm and a visible light transmittance of not less than 10% at a wavelength of 600 nm.