Patent ID: 7632018

Claim:
A synchronous chain for a liner guideway moved in the liner guideway by cooperating with rolling elements, comprising a head portion integrally formed with one end thereof and a tail portion integrally formed with the other end thereof, and the head portion and the tail portion being interconnected in a staggered manner, and a shape formed by an interconnection of the head portion and the tail portion being a spherical shape corresponding to the shape of the rolling elements; wherein the head portion is connected with one end of the chain, and the head portion is successively formed from the chain with a first radial groove and a first connecting block extending radially; the tail portion is connected with the other end of the chain, and the tail portion is successively formed from the chain with a second radial groove and a second connecting block extending radially, the first connecting block of the head portion is engaged in the second radial groove and the second connecting block is engaged in the first radial groove of the head portion.