ARRANGEMENT AT A ROCK DRILL AND A ROCK DRILL

摘要

A neck adapter (2) comprises an elongated body (4), with an outer surface and an inner surface. A first part (17) of the outer surface is provided with a first corrosion protecting coating and a second part of the outer surface and/or the inner surface is provided with a second corrosion protecting coating. The first and second corrosion protecting coatings constitutes different material. Further a rock drill comprising a neck adapter (2) and a method to corrosion protect a neck adapter (2) is presented.