Adapter sleeves are supplied complete with lock nut and lock washer (or locking clip). On this big sized sleeve, Trapezoidal threads are provided on its outer diameter for locking.

OH design comes with oil injection hole to facilitate oil pressure for easy removal from bearing assembly. One oil supply duct at the threaded end is provided which opens in the distribution groove around circumference of outer diameter. Additional oil distribution grooves are there in axial direction on outside surface of bore.