WP 1550 Plate Compactor: Complete Guide to the Wacker Neuson WP1550A

The WP 1550 plate compactor is a professional single-direction vibratory plate designed for compacting asphalt, interlocking paving stones, light mixed soils, and construction subbases. Part of the Wacker Neuson WP series, the WP1550 combines a compact 19.7-inch-wide base plate with a Honda gasoline engine and 3,372 pounds-force of centrifugal force. This combination makes it useful for contractors working on patios, walkways, roads, parking areas, landscaping, hardscaping, and asphalt projects.

The model is commonly identified as the Wacker Neuson WP1550A, while the WP1550Aw adds a water system for applications such as asphalt compaction. Both versions are designed around portability, maneuverability, and professional jobsite use.

What Is the WP 1550 Plate Compactor?

The Wacker Neuson WP1550 is a single-direction vibratory plate compactor. Unlike a reversible compactor that can intentionally travel forward and backward, the WP1550 is designed primarily for forward travel.

Its gasoline engine powers an exciter that creates vibration through the steel base plate. This vibration transfers energy into the material beneath the machine, helping particles rearrange and settle into a denser base.

Wacker Neuson positions its WP series for asphalt, light mixed soils, interlocking paving stones, mixed-soil subbases, walkways, roads, and parking lots.

This makes the WP1550 particularly useful for contractors who need more productivity than a very small plate but do not need a large reversible compactor or ride-on roller.

WP1550A Specifications

The WP1550A uses a Honda GX160 gasoline engine with 163 cc displacement.

Key specifications include:

• Engine: Honda GX160

• Engine type: Gasoline

• Displacement: 163 cc

• Centrifugal force: 3,372 lbf / 15 kN

• Base plate width: 19.7 inches / 500 mm

• Base plate length: 22.9 inches / 582 mm

• Operating weight: approximately 207.2 lb / 94 kg

• Forward travel speed: approximately 1.6 ft/sec / 29 m/min

• Area capacity: approximately 9,365 sq. ft./hour / 870 m²/hour

• Gradeability: 36.4%

• Fuel tank capacity: approximately 1 gallon / 3.6 liters

These specifications apply to the WP1550A configuration listed by Wacker Neuson and can vary by market or model generation.

WP1550A Honda Engine

The Honda GX160 is an important part of the WP 1550's design.

The current WP1550A technical listing identifies a single-cylinder, 163 cc Honda gasoline engine. Wacker Neuson lists effective output at 3.1 kW under its specified rating standard, with the engine operating around 3,520 rpm during operation.

For contractors, a gasoline engine allows the machine to operate independently without electrical cords or charging equipment.

As with any construction engine, reliability depends heavily on proper maintenance. Engine oil, air-filter condition, fuel quality, and routine inspections should follow the engine and machine manuals.

How Much Compaction Force Does the WP 1550 Have?

The WP1550A produces 15 kN, or approximately 3,372 pounds-force, of centrifugal force.

Centrifugal force is one of the important specifications when comparing vibratory plates because it describes the force generated by the vibrating system.

However, force alone should not determine which plate compactor you buy.

Also consider:

• Operating weight

• Plate dimensions

• Material being compacted

• Lift thickness

• Travel speed

• Soil conditions

• Jobsite size

A larger number does not automatically mean a machine is better for every application.

WP 1550 Plate Compactor for Pavers

The WP 1550 plate compactor is well suited to hardscape work.

Wacker Neuson specifically identifies the WP series for compaction over interlocking paving stones in addition to subbase applications.

During a paver installation, compaction may be needed while preparing the aggregate base and during later stages of installation.

When operating a plate directly over finished pavers, however, surface protection becomes important. Depending on the paver manufacturer and material, a compatible paving pad may be needed to prevent the steel plate from scratching, chipping, or marking the finished surface.

Always follow the paver manufacturer's compaction requirements.

WP 1550 Plate Compactor for Gravel

The WP1550 is also useful for appropriate gravel and mixed-soil base applications.

Vibration is effective on granular materials because it encourages individual particles to rearrange into a denser structure.

Typical projects can include:

• Patio bases

• Walkway bases

• Driveways

• Landscape installations

• Parking areas

• Roadwork

• Hardscape subbases

For best results, material should normally be installed in appropriate lifts rather than placing a very deep layer and expecting the machine to compact the entire depth at once.

WP 1550 Plate Compactor for Asphalt

Asphalt is another important application for the WP series.

Wacker Neuson specifically identifies asphalt finishing as an intended professional use of its WP plates.

For contractors who frequently compact asphalt, the WP1550Aw deserves particular attention because it includes a water system.

The water helps reduce asphalt adhesion to the base plate while the machine moves across hot material.

This can make the water-equipped model useful for:

• Asphalt patches

• Driveway repairs

• Parking lot repairs

• Edge work

• Road repairs

• Smaller paving projects

WP1550A vs. WP1550Aw

The primary distinction between these two versions is the water-equipped configuration.

The WP1550A is the standard plate.

The WP1550Aw adds the water-related equipment and consequently weighs more.

Wacker Neuson's technical specifications list the WP1550A at approximately 207.2 pounds, while the WP1550Aw is approximately 227.1 pounds. Both use the Honda GX160 engine, a 19.7-inch base plate, and produce 3,372 pounds-force of centrifugal force.

For general base preparation and gravel work, the standard model may be sufficient.

For frequent asphalt work, the water-equipped version can provide a meaningful advantage.

WP1550 vs. WPU1550

These machines have similar names, but they should not be confused.

The WP1550 is a single-direction plate compactor.

The WPU1550 is a reversible plate compactor.

The WPU1550 can travel both forward and backward. Wacker Neuson designed it for confined-area compaction involving asphalt, interlocking paving stones, mixed soils, foundations, roads, sidewalks, parking areas, landscaping, and similar professional applications.

Interestingly, the WPU1550A also produces 3,372 pounds-force of centrifugal force and uses a 19.7-inch base plate, but it weighs more—around 223 pounds in the U.S. specification—and provides reverse travel.

Choose the WP1550 when straightforward forward compaction and lower weight are priorities.

Consider the WPU1550 when the ability to reverse direction is valuable, especially in confined areas.

WP1550 vs. VP1550

Wacker Neuson also offers the VP1550A.

Both machines occupy a similar general size category and both are single-direction vibratory plates.

The current VP1550A specification lists:

• 3,372 lbf centrifugal force

• 19.8-inch base plate width

• Approximately 205 lb operating weight

• 4.8 hp effective engine power

• 36.4% gradeability

The VP series is designed for base preparation, asphalt, interlocking paving stones, and mixed soils in confined spaces.

Because product generations and market availability can change, contractors comparing a WP1550 and VP1550 should verify the exact model numbers and specifications rather than relying only on the "1550" designation.

Is the WP 1550 Good for Professional Hardscaping?

Yes. The WP series is specifically designed for professional compaction applications.

The combination of a 19.7-inch plate, approximately 207-pound operating weight, 3,372 pounds-force of centrifugal force, and compact design makes the WP1550A particularly attractive for hardscape contractors.

It can fit applications such as:

• Paver patios

• Walkways

• Landscape installations

• Smaller driveways

• Parking areas

• Mixed-soil subbases

• Asphalt repairs

Its center-mounted control handle and shaped base plate are also designed to make maneuvering and turning easier.

Can the WP1550 Compact Clay?

The WP1550 is better matched to asphalt, paving stones, granular material, and light mixed soils than to heavy cohesive clay.

Clay behaves differently from gravel and sand.

Highly cohesive soil generally benefits from impact or kneading action. Depending on the project, a rammer, padfoot roller, or other cohesive-soil compactor may be more appropriate.

For mixed soil containing some cohesive material, suitability depends on the exact composition and moisture condition.

How to Use a WP 1550 Plate Compactor

Before operation, inspect the machine and work area.

Check:

1. Engine oil

2. Fuel level

3. Air filter

4. Base plate

5. Belt and guards

6. Fasteners

7. Handle

8. Water system, when equipped

Prepare and level the material before beginning compaction.

Start the Honda engine according to the manufacturer's procedure and allow the machine to operate at the specified speed.

Guide the plate in straight, overlapping passes.

Avoid trying to force the machine manually. The WP's plate design and vibration help produce forward movement.

Continue systematically until the required compaction has been achieved.

How Many Passes Does a WP1550 Need?

There is no single correct number of passes.

The answer depends on:

• Material

• Moisture

• Lift thickness

• Required density

• Existing base

• Site conditions

A residential paver base and an engineered commercial subbase can have completely different requirements.

For projects requiring a specified density, testing should determine whether the target has been reached rather than simply counting passes.

WP 1550 Plate Compactor Maintenance

Regular maintenance can extend machine life and reduce downtime.

Important areas include:

• Engine oil

• Air filter

• Spark plug

• Fuel system

• Drive belt

• Exciter

• Base plate

• Fasteners

• Vibration isolators

• Water system

Wacker Neuson also protects the WP's V-belt with a sturdy housing and designs it so belt tension can be adjusted, helping reduce wear and service costs.

Always follow the maintenance intervals specified for your exact serial number and model.

Transporting a Wacker Neuson WP1550

At approximately 207 pounds for the standard WP1550A, the machine is portable compared with larger reversible compactors, but it is still heavy equipment.

Do not attempt unsafe manual lifting.

Wacker Neuson offers a wheel-set accessory designed to make WP plates easier for one person to move around the jobsite.

Secure the machine properly whenever transporting it in a truck or trailer.

Frequently Asked Questions About the WP 1550 Plate Compactor

What is a WP 1550 plate compactor?

The WP1550 is a Wacker Neuson single-direction vibratory plate designed for asphalt, interlocking paving stones, light mixed soils, subbases, walkways, roads, parking areas, and similar construction applications.

How much does a Wacker Neuson WP1550 weigh?

The WP1550A weighs approximately 207.2 pounds or 94 kg in Wacker Neuson's current specification. The WP1550Aw is approximately 227.1 pounds or 103 kg.

How much compaction force does the WP1550 have?

It produces approximately 3,372 pounds-force or 15 kN of centrifugal force.

What engine does the WP1550 use?

The WP1550A specification lists a Honda GX160 163 cc gasoline engine.

How wide is a WP1550 plate compactor?

The base plate is approximately 19.7 inches or 500 mm wide.

Is the WP1550 reversible?

No. The WP1550 is a single-direction vibratory plate. If you need forward and reverse travel, look at the WPU1550 reversible plate.

Can the WP1550 compact pavers?

Yes. Wacker Neuson lists interlocking paving stones among the intended applications of the WP series. Appropriate surface protection may be required when compacting directly over finished pavers.

Is the WP1550 good for asphalt?

Yes. Asphalt compaction is one of the WP series' intended applications. The WP1550Aw configuration is particularly useful when a water system is desired.

Can the WP1550 compact gravel?

Yes. It can be used for suitable granular and mixed-soil subbase applications, including bases for walkways, parking areas, roads, and hardscaping.

What is the difference between WP1550A and WP1550Aw?

The WP1550Aw is the water-equipped version and weighs more. Both versions use the Honda GX160 and produce the same listed 15 kN of centrifugal force.

What is the difference between WP1550 and WPU1550?

The WP1550 is single-direction. The WPU1550 is reversible and can travel forward and backward, making it more convenient in confined working areas.

Is the WP1550 suitable for contractors?

Yes. Wacker Neuson describes the WP series as heavy-duty equipment suited to professional use on mixed-soil subbases, walkways, roads, parking lots, paving stones, and asphalt.

What should I look for when buying a WP 1550 plate compactor?

When buying a WP 1550 plate compactor, verify the exact model designation, operating condition, Honda engine, base plate, exciter, V-belt, vibration isolators, handle, and water system if equipped. The WP1550A's combination of a 19.7-inch plate, roughly 207-pound operating weight, Honda GX160 engine, and 3,372 pounds-force of centrifugal force makes it a versatile professional plate for hardscaping, paving, asphalt, mixed-soil subbases, walkways, and similar construction work.