To provide a chain in which its assembling characteristic is superior and it has a superior outer appearance after assembling operation, no loss occurs at the time of its use, an appropriate amount of lubricant corresponding to its application is supplied gradually in a uniform manner to a sliding segment and a uniform lubricant film is interposed, no tolerance in its quality is found and a superior abrasion resistant elongation in life is attained.
A chain 1 is constituted such that a pair of outer plates 4 connected by two pins 5 and a pair of inner plates 2 connected by two bushing 3 are alternatively connected under a state in which the pins 5 are freely fitted to the bushing 3. Solid lubricant bodies 7, 8 containing ultrahigh molecular weight PE with an average molecular weight of 1 million or more and 5 million or less and 1 mass% or more and 10 mass% or less in regard to a total mass, a low molecular weight PE with an average molecular weight of 1 thousand or more and 10 thousand or less and 15 mass% or more and 90 mass% or less in regard to a total mass and lubricant of kinematic viscosity of 10 or more and 1000 or less in a viscosity class of ISO and 10 mass% or more and 90 mass% or less in regard to total mass are fitted to the inner face and outer face of the bushing 3.
MAKINO TAKASHI
FUKUIKE YUJI
MURAKAMI YOSHIHIRO
KAWATA NAOFUMI
ASADA MISA
ARIMA AIKO
NAKAYASU TOMOAKI
