Options - Philippi-Hagenbuch, Inc.
Our Beloved Pat Hagenbuch 1942 - 2021

Tailgate Options

PHIL's Autogate® Tailgates are enhanced with various accessories that assist in additional load containment, increased payload, or reduce sticky material carryback.

Add capacity

Reduce wet material spillage

Minimize tailgate bouncing for a long life

Customize tailgate for unique job requirements


Recommended to increase volumetric capacity when hauling lightweight material. (Does increase loading height.) Special prices are available for Autogate® Tailgate / Sideboard packages. Available in 1" increments from 6" to 40" in size for almost every make and model of off-highway hault ruck.

Body Seal

Installed on sides of the body to help seal space between the gate, sidearms, and body sides. Reduces most fine or fluidic material leakage, +/- ¾".

Fluidic Seal

Provides a nearly complete seal (PHIL cannot guarantee a 100% seal; there will be occasional leaks) between the Autogate Tailgate and truck body to haul extremely soupy materials. Our Fluidic Seal uses the body seal components plus additional rubber seal pieces across the bottom and up the sides of the tailgate rear. Recommended when you need more than a body seal to keep liquid material "in the box". Please note - Fluidic Seals are wear parts are will require replacement and additional maintenance to keep working optimally over time. 


Rubber Cushion Pad Assembly

Recommended for underground operations and operations with high road speeds and uneven haul roads. Our Cushion Pad Assembly reduces tailgate wear, bouncing, and noise, prolonging the life of tailgates operating in adverse conditions. May be installed on an existing gate or purchased with an Autogate Tailgate.

Mud Flap Outrigger Mount

Mount to attach OEM Mud Flaps to tailgate outrigger arrangement. This option provides a stable, set location for the mudflap to be mounted when a tailgate installation or its components would otherwise impact a mudflap's original location.


PHIL set the industry standard in tailgate design since we introduced the first off-highway Autogate Tailgate to the industry in 1969. Today, we’ve produced more than 10,000 tailgates for both articulated and rigid frame off-highway trucks - from 20 ton to 340 ton in size.

Each fast-opening, fast-acting Autogate Tailgate provides increased payloads, decreased material spillage, improved loading and a balanced load distribution. And, we use a unique, high-strength chain that’s stronger than any commercially available standard chain and oversized gate pivot pins to provide maximum durability.

Whether you’re hauling dirt, sand, gravel, shot rock, coal, oil sands or soupy material, the PHIL Autogate Tailgate keeps material in your truck bed no matter what the condition.

How Does An Autogate Tailgate Increase Your Truck Payload and Productivity?

Without a tailgate, isolated components such as the front suspension, front axle, hoist mechanism, and steering equipment may be overburdened. While attempting to prevent spillage, operators may pile the load forward in the truck bed causing damage to the canopies, overload to the front tires, and side spillage. By closing the rear of the truck, tailgates provide a bigger loading target helping the loader operator distribute the load evenly from the front to the rear of the truck so weight distribution improves.

With the truck bed closed, you’ll also realize a volumetric capacity increase of up to 20%, depending on the material hauled.

A direct benefit of tailgates is the elimination of rear-end spillage. When a non-tailgated truck shifts gears on an incline or turns a corner, materials can be lost over the sides or out the rear leading to tire damage. Our Autogate Tailgate reduces side and rear-end spillage by keeping the “rocks-in-the-box”. Drivers steer with ease through clutter-free loading and haulage areas.

Operation of our Autogate Tailgate is simple and trouble-free. No lock, cylinders or controls to malfunction. The body dumps, the Autogate Tailgate opens.

Tailgate Capacity Chart


April 18-20, 1977

Learn about the operational benefits of tailgates and how they can help improve your haul truck efficiency.



Aggregates Manager Magazine
February 2015

Learn how adding a tailgate to your haul truck can boost



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PHIL Autogate® Tailgates typically provide 10% to 20% additional volumetric capacity. Do the math below to see how adding tailgates to your fleet will impact your bottom line, with no additional trucks or labor.

Additional Information


Faster, More Efficient Loading is the goal. An example whould be a 40 ton capacity haul truck that is being loaded with 4 passes. With a tailgate extending the truck bed length to 17' 5" the loader size can be increased from 7 yards to 12.5 yards, allowing one less pass plus more load while containing the load within the bed.

Rear End Spillage

Half of the time spent on haul roads is for cleaning; the other half is maintaining - so cut your time in half and save by keeping the load in the body with tailgates.

Tire Costs

The hours in a Manufacturers Performance Book show expected tire life of 10,000 hours. Where cleaner haul roads are present, hours jump to 12,000, or a 40% increase in tire life. What type of tire life are you achieving? Is it less than 12,000 hours? Less than 10,000 hours? What have you tried to decrease tire damage and increase tire life? Tailgates help!

Background Info


Rated Capacity

Loads Per Day Per Truck Value
Current Tons Per Day Per Truck Value
Loads Per Day Per Fleet Value
Current Tons Per Day Per Fleet Value
Current Tons Per Week Per Fleet Value
Increase in Tons Per Truck Per Day @ 10% additional volume Value
Increase in Tons Per Fleet Per Day Value
Projected Tons Per Day Per Fleet Value
Projected Tons Per Week Per Fleet Value
Increase in Tons Per Week Value
* Increase equates to the following number of truck-days of production Value


Gallons of Fuel Used / Day by Fleet Hauling 32 Tons / Load Value
Cost of Fuel Used / Day by Fleet Value
Cost of Fuel Per Ton Hauled Value
Gallons of Fuel Used / Day by Fleet Hauling 32 Tons / Load Value
Cost of Fuel Used / Day by Fleet Value
Cost of Fuel Used / Week by Fleet Value
Cost of Fuel Per Ton Hauled (based on 40 Ton Loads) Value

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