Northland Door Systems is a source for dock equipment. Please browse through the manufacturers’ websites to see a complete product listing. For information on pricing for purchase, installation, and other services, please fill out the contact form on the website or call our office directly.
1. Height of Trailers / Trucks accessing the Dock
48” is standard but some vehicles can be as low as 20” or as high as 62”
2. Dock Door Size
Inside width on new style Trailers can be as much as 101” (8’-5”) and allows for a 40”pallet and 48”pallet to fit side by side. Inside Height of up to 114”allows for double stacked loads to max out Trailer volume.
3. Dock Height
48” is standard but some vehicles may require a lower or higher dock height
4. Style of Dock Leveler
Available in both Hydraulic and Mechanical models. Installed after the floor is poured. Easily removed for replacement.
Available in both Hydraulic Mechanical and models. Provides concrete floor beside Dock Leveler. Flat plate option welds to embedded channel.
Edge of Dock
Available in both Mechanical and Hydraulic models. Lower cost alternative to the pit style Dock Leveler. Suitable for lesser capacities and facilities with less frequent use. Suited for servicing minimal deviation in above and below level ranges. Excellent upgrade to aluminum plates.
5. Hydraulic or Mechanical
Which applications require fully hydraulic rather than mechanical Dock Levelers? Both types are available in a variety of sizes and capacity ranges. Hydraulic Dock Levelers, although higher in initial cost, have proven to provide lower lifetime cost due to lower maintenance requirements. Added benefits of fully hydraulic Dock Levelers include smooth, quiet operation at the touch of a button and automatic return to cross traffic position. For operator convenience and years of trouble-free service, fully hydraulic Dock Levelers are suggested for all applications.
6. Dock Leveler Size
Talking about capacity, I’ve heard the terms STATIC, ROLLOVER and DYNAMIC being used. Which rating should influence my Dock Leveler selection?
Static and rollover refer to the amount of weight that a Dock Leveler can safely support, either stacked on the deck or crossing over it, while in the stored position.
Dynamic capacity refers to the total force of a rolling load that a Dock Leveler can safely support while in the extended or service position. This dynamic rating should be used when selecting your Dock Leveler, since it is the only method that considers true, live working conditions
7. Dock Leveler Capacity
There are three ways of determining the capacity of a dock leveler.
The first is static load – the amount of standing (non-moving, non-impact) weight the dock leveler will support.
The second factor is rollover capacity – the amount of moving weight the leveler will support in its closed and fully supported position.
The third is dynamic load – this is a measure of the force the load applies to the leveler as it impacts the leveler in a raised position.
The dynamic rating is a combination of the weight of the lift vehicle and its load, its speed and the angle of the leveler above dock. Dynamic force increases as the grade increases, therefore, a longer dock leveler will handle greater loads, because the dynamic impact is less. Which rating should influence my Dock Leveler selection? Static and rollover refer to the amount of weight that a Dock Leveler can safely support, either stacked on the deck or crossing over it, while in the stored position. Dynamic capacity refers to the total force of a rolling load that a Dock Leveler can safely support while in the extended or service position. This dynamic rating should be used when selecting your Dock Leveler, since it is the only method that considers true, live working conditions.
8. Dock Leveler Lip Length
How much lip length is recommended in the truck at all times?
It is recommended that 4” to 6” of the lip should remain in contact with the vehicle at all times
9. Bumper Projection
Determined if approach is level or sloped to dock leveler
10. Style of Dock Seal or Dock Shelter
Determined if approach is level or sloped to dock leveler and door size.
11. Style of Vehicle Restraint required
Creates a safe working environment at the dock. Locks onto Trailer R.I.G., Prevents trailer from early departure. Easy operation from control Panel inside Building. Effective communication with truck driver via outside lights.
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Northland Door Systems ● 1800 Tower Street, Prairie du Sac, WI, 53578 ● 608-251-3627 / 608-643-2278
Northland Door Systems ● 2810 Crossroads Drive Suite 4000 Madison, WI 53718 ● 608-251-3627