Lattice boom crawler crane
max. 40 t, max. 46 m | SCX400 Sumitomo Heavy Industries Construction Crane

.. The SCX400 is equipped with dual hoist mechanisms, each
consisting of independent main and auxiliary hoist drums
driven by a hydraulic motor.
.. Hoisting and lowering the load is achieved by forward/reverse
rotation of the hydraulic motor.
.. Power lowering is carried out with a hydraulic brake.
.. Hoisting and lowering can be carried out at two speeds-fast
and slow-to suit job requirements.
.. Each drum is fitted with a friction band-type brake. This allows
free fall (rapid lowering) of the bucket.
.. Main and auxiliary hoist drums are each fitted with a pawl-type
drum lock to positively hold the load in the air.
.. The drum brake is an external contracting friction band-type
using durable non-asbestos lining.
.. The brake is controlled by the hydraulic servo system to reduce
control force. With the hoist lever in neutral, auto braking or
foot braking can be selected.