Selecting the right dock leveler is a crucial step in streamlining your facility operations. Picking the right leveler can significantly impact the overall safety and productivity of an industrial or commercial facility. However, when selecting a dock leveler, it is important to understand the various types available in order to select one that truly suits the unique needs of your facility. Below is a detailed explanation and comparison of some of the different types of dock levelers available on the market:
Common Types of Loading Dock Levelers
Hydraulic Dock Levelers
For high volume and heavy traffic conditions, hydraulic dock levelers are a safe option as they are built for durability in high-use environments. For an added advantage, hydraulic systems are also designed with a push-button operating system that makes them fully automatic. The fully automatic system translates into a virtually maintenance-free option as it eliminates the possible breakdowns that mechanical and air systems are sometimes prone to.
For a low maintenance, efficient and easy-to-operate loading dock leveler, a hydraulic system is your best option.
Mechanical Loading Dock Levelers
Mechanical systems are viewed as one of the more economical options as they don’t require a power source. They use springs to lift the leveler and are equipped with mechanical safety legs. This safety feature, although critical, is sometimes the cause of ‘stump-out’ problems. Stump-outs occur when the dock leveler can’t move down to accommodate trailer bed movement. This can potentially lead to injury of the forklift driver while backing up, and also possible damage to the product, equipment and dock leveler itself.
If finding an economical solution is the priority for your loading dock area, a mechanical leveler is your best option. However, long-term maintenance costs may outweigh potential short-term cost savings versus a hydraulic option.
Air-Powered Dock Levelers
Air-powered systems are usually push button operated and use an inflatable air bag to raise the leveler. Relative to a hydraulic leveler, this system may require more maintenance in the long term because the air bag design requires more cleaning. Additionally, air-powered levelers are a moderately higher risk option in that there is the possibility that debris can puncture the airbag. Air levelers also employ the safety leg system, which can cause the same “stump out” as mechanical systems.
In comparison to a mechanical leveler, air-powered levelers have fewer components and as a result are typically more reliable systems. In contrast, they have more moving parts than a hydraulic leveler, leaving them more susceptible to breakdown and repair versus these higher-end systems.
Comparing Hydraulic, Mechanical & Air-Powered Dock Levelers
Ideal Traffic Load
Less Common Types of Loading Dock Levelers
Vertical Loading Dock Levelers
Vertical dock levelers, as the name indicates, stand up in a vertical position when not in use and offer a complete seal when upright. Vertical levelers typically operate using a hydraulic system. This combination of features makes vertical dock levelers ideal for temperature-controlled environments as they allow for a complete seal, keeping in conditioned air.
For some more unique applications where facilities are temperature controlled or where security is the top priority for the facility, the sealing component of these levelers makes for an excellent out-of-the-box option.
Roll-Off Stop Lip Dock Levelers
Roll-Off Stop Lip Levelers have an extra safety measure versus standard levelers that can help prevent forklifts, machinery and goods from falling off the dock when the door is open and there is no trailer secured to the door opening. The extra feature is a vertical ‘Stop Lip’ that stands up at the edge of the dock when the dock is in the parked position.
Roll-off stop lips offer an extra safety measure for forklifts operating close to the edge of the leveler. They are designed to stop the forklift from rolling off when the dock door is open and prevent ongoing section damage when the dock door is closed.
Edge of Dock Levelers
Edge of dock levelers come in both hydraulic and mechanical versions and are used for low-volume facilities with up to 30,000 lb capacities. These types of levelers are safer alternatives to dock plates and sometimes are a more ergonomic option. They are limited in use as they are only suitable for standard loading dock heights with highway trailers.
Choosing the Right Loading Dock Leveler For Your Application
With a so many different types of levelers to choose from and so many different variables in what’s available on the market, choosing the right one for your facility can be challenging. At Lenworth, we take extreme pride in visiting facilities, diagnosing use cases and providing you with the right option for your application.
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