Using balls manufactured from silicon nitride instead of tool steel eliminates microwelding in the ball nut. Available ball-screw sizes are 6 3 mm, 8 1 mm, 12 3 mm, 16 5 mm, 32 10 mm, 40 5 mm, and 40 ...

Complex bone fractures are often set with titanium or steel screws and plates. However, if these remain in the body for some time, they can cause health problems. A new bioceramic screw nail has the ...