The expansion sleeve is a keyless connection device, whose principle and purpose are to generate a huge clamping force between the inner ring and the shaft, as well as between the outer ring and the wheel hub, through the action of high-strength tensile bolts, in order to achieve keyless connection between the machine parts and the shaft.
PL-A (Z2) type expansion sleeve
The Z2 type expansion sleeve consists of an open double cone inner ring, an open double cone outer ring, and two double cone compression rings
Tighten with hexagonal bolts. When tightening, the elastic ring does not move axially relative to the hub. Compared with Z1 type, the same tightening force can generate greater radial pressure and transmit greater load
For ease of disassembly, there are screw holes for disassembly on one compression ring, with a total of 2-4 locations along the circumference
Widely used in packaging, printing, textile, machine tools and other machinery
