Ruian City H2/H3 series adapter sleeve http://www.wzlmjx.com/products_view.asp?id=1932 adapter sleeve for tapered bore spherical bearing (self-aligning ball bearings, spherical roller bearings) is fixed at no shaft shoulder axis, simple structure, reliable, easy to swap bearings, widely used in the textile, light industry, paper making, metallurgy, transport belt and transportation equipment industries. Adapter sleeve bushing, lock nut, lock washer (or locking Card) and other parts. Only full set of interchangeable adapter sleeve with lock nut and lock washer. Different sources of spare parts are not interchangeable. Recommended products: expansion sets http://www.wzlmjx.com/