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Recent content by Rolf Mannbro

  1. R

    Quick Couplers/Quickhitches

    Hello, I am one of the mid-eighties’ pioneers of tilting and rotating attachments for excavators. All now known producer of tiltrotators choose for rotation worm gears. My choose were double high torque motors driving a slew ring with internal module 6 straight gear. Later I added integrated...
  2. R

    Detroit 6-71 wet stacking

    Regarding American crane 7450. Here in Sweden is the type of crane very rare and not much knowledge to find. So, I hope you Americans can give some advice. We understand well the mechanical and the technical function of the sprag, clutch and converter but need to learn about known errors or...
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