2 options..go to a machine shop with old one,and have them make i with heavier material. or if you can make it yourself,get a 1''shaft collet or what ever size dia hyd motor is. get 1/2""plate ,center collet on it and weld it on .install on motor ,turn on motor and spin, finding the center mark diameter of cone, trim excess steel ,clamp cone to plate and drill bolt pattern. save your money and will probably be stronger.