... can manufacture the below Rotek slewing ring model: Rotek Series 2100 slewing ring External gear L6-16N9Z, L6-16N9ZD, L6 ... , L9-46N9Z, L9-49N9Z, L9-53N9Z, L9-57N9Z Internal gear L6-16E9Z, L6-16E9ZD, L6-22E9Z, L6-22E9ZD, ... , L9-53P9Z, L9-57P9Z Rotek Series 3000 slewing ring External Gears A6-9E1B, A6-11E4, A6-14E10, ... , A12-125P1, A19-150P1 Rotek Series 4000 slewing ring H7-30E1, H7-38E1, H8-58E2, H7-35N1 ...