Pentalift Blog - Loading Dock Equipment News

Is hot dip galvanizing expensive?

Hot dip galvanizing is significantly more costly on the front end than a spray galvanized or a painted equipment finish. The increased costs can be associated with the extra handling during the manufacturing process, the shipping costs of the sub-assemblies to and from the galvanizer’s facility and any rework required before final assembly. In some applications hot dip galvanized equipment (although initially more costly) is not considered expensive in relation to the extended structural lifetime of the product. In corrosive or repeated wash down applications hot dip galvanizing is often a worthwhile investment.

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In a Dock Lift Installation what are protective bollards?

Protective bollards serve the same function as loading dock bumpers. When the truck is backed into position bollards or loading dock bumpers stop the incoming truck movement and protect the loading dock equipment from damage. As many dock lifts are installed ahead of the building foundation steel bollards are typically poured into position to keep the truck from impacting the dock lift. Steel bollards are often 6” – 8” in diameter, typically installed approximately 4’ above grade and 4’-6’ below grade cast in concrete, secure enough to take vehicle low speed impact. The bollards are filled with concrete and often rebar is then inserted. The top of the bollards concrete has a slight crown to assist with water run-off.

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What are the applications and steps for hot dip galvanizing?

Hot dip galvanizing is often specified in highly corrosive or repeated wash down applications. Common applications would be food processing facilities and chemical processing facilities. Preparing for the hot dip galvanizing process the equipment is built, tested then dismantled and sent to the galvanizer in sub-assemblies. The sub-assemblies are first dipped into an acid solution for cleaning, once cleaned dipped into a hot (approximately 850 degree) molten zinc galvanizing solution. The extreme heat of the galvanizing solution and the immersion process ensures that the complete sub assembly receives a protective coating. The sub-assemblies are then returned and the equipment re-assembled, tested and shipped.

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What is Auto Return on a dock leveler?

Auto Return is only available on hydraulic dock levelers. When the truck is backed into position and the trailer doors are open the dock attendant cycles the dock leveler. The dock leveler deck raises, the lip extends, the dock leveler is then lowered and the extended lip is positioned on the truck bed. When the truck is loaded / unloaded typically the dock attendant would cycle the dock leveler into the closed, stored position. If there is no dock attendant available the truck driver departs, the dock leveler deck and extended lip lowers to the bottom position. The hydraulic lip begins to retract and an under deck electric limit switch is then activated. The dock leveler deck automatically raises approximately 6” – 8” above the dock height, the lift motor timer shuts off and the dock leveler returns to the stored position. When the truck departed the dock leveler was automatically returned to the closed, stored position.

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What are the advantages of a vertical storing dock leveler?

Although vertical storing dock levelers are initially more expensive they can actually be more cost effective in the long run depending on the application. Vertical storing dock levelers are more energy efficient because when they are in the stored position with the overhead door closed the chance of energy loss is minimized. Vertical storing dock levelers also reduce the risk of vermin entry which is very important in any food industry. Dock seals definitely help eliminate energy loss but cannot eliminate the gaps that surround the platform of conventional pit installed dock equipment, this concern is eliminated by choosing vertical storing dock levelers. As standard vertical storing dock levelers are available in capacities ranging from 25,000 lbs to 50,000 lbs.

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