'FHC' VS. KELLEY 'FX'
of hybrid dock levelers including air bag design claim that they are better than
mechanical dock levelers and less expensive than hydraulic models. In reality,
they are power assisted mechanical dock levelers that do not offer all the features
that a customer can gain with conventional industry proven hydraulic dock levelers.
lip = reliability and no maintenance
lip = regular maintenance and cost
has 7 support points full width
has only 4 support points, partial width
fast (up to 1.5 times faster) cycle times
before operating = more time
up to 30,000 lbs and up to 80,000 lbs with 'FHC'
up to 50,000 lbs only
box beam deck support with approximately 20 times greater under deck area support
tube beam deck support with "flex" design
and clear visual inspection under deck
hindered due to air bag location
in all common voltages
only; requires 10 amp dedicated line
activated lip control - no extra time wasted, no operator bending over for below
floor level trailers
chain release activation by attendant required for each below level cycle
fall safe protection maximum of 3" drop
fall safe protection up to 12" drop
|The most significant
structural design aspects for all dock levelers are the amount or type of deck
support (total width of supporting beams Vs. total width of deck) and how the
dock moves to accommodate tilted truck beds. In addition to design parameters,
the two primary operating functions of any dock leveler are to raise the deck
and extend the lip. Functionally the air bag lifts only the deck, NOT the lip.
The 'FX' lip is extended by a mechanical linkage system as mechanically operated
dock levelers. The BLUE GIANT fully hydraulic system lifts the deck and extends
the lip with separate hydraulic cylinders. Therefore the customer is only receiving
50% powered automatic operation compared to BLUE GIANT fully automatic operation.