There are many kinds of Synchronous belt wheel structure . From the shape, Synchronous belt wheel can be divided into (the gear portion BS points only at both ends of the blank gear portion BF and non-blank) flangeless and flange type B and type A. That in addition ,for Synchronous belt wheel ,expect to have both ends of the blank is still a cylindrical gear portion flange (divided into blanks of AF type and no flaps of AS type)
From the shaft coupling way to see, Synchronous belt wheel can be divided into three types: namely, screws, keys, and set up (the so-called keyless coupling). Screw connection is simple and easy handling, but have poor concentricity wheel axis and the axis corresponding to the processing of flat square or nest; linkage to the merits of self-evident; up sleeve coupling performance is good, but with the high cost.
