Concrete Pumps Description Concrete pump is an extremely demanding application segment for what overturning moments and harsh environment are concerned. Operating since more than thirty years in the field, La Leonessa participates to the success of its customers worldwide, providing its expertise to developing and driving new solutions and products into a business where height is seen as a challenge rather than a limit. Arm The slewing ring located at the base of the concrete pump arm must counter react the over turning moment generate by the huge amount of concrete within the arm piping. Data request form Main characteristics of concrete pumps slewing rings: Position Environment Spacers Seals Grease Options Arm Harsh, dust, humidity PA6 standard NBR special EP2 standard Hardened gear