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High-Production Slipform Paving
- Up To 50 Foot (15.24 m) Wide Paving
- Versatile Modular Design
- Two-Track & Four-Track
- Airports & Mainline Paving
- Superior Rideability
- Telescoping Frame
- Enhanced On-Site Mobility
- Transportability
- G21 Control System
- Optional G22 Control System Now Available
- Modular Hardware
- Stringless Technology
- Safety Features
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-- Select Any Photo Or Graphic
For A Close-Up --
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World's Largest Mainline Paver
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The GP-4000 four-track and two-track features high-production and proven rideability results on new and reconstruction of highways, airports and city streets.
The modular frame telescopes on the left side up to 3 ft. 6 in. (1.07 m) and modular vibrator packages provide ease in changing hydraulics for paving widths.
Mainline and airport paving widths range from 12 ft. (3.66 m) to 50 ft. (15.24 m) in a single pass.
GOMACO’s G21 proprietary digital operating system features self-diagnostics for front and rear grade, cross slope, steering, and reverse steering for ease of operation. GOMACO’s control system features dual grade controls for sensoring stringline on both sides of the machine simultaneously. Stringless technology is adaptable to this control system.
The GP-4000 is equipped with multiple emergency stops, track guards and other safety features.
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Designed With Extra Strength
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Power For Mainline Paving
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| The GP-4000 provides ample power for mainline paving projects. While paving a slab up to 50 ft. (15.24 m) wide, the GP-4000 easily handles a large head of concrete. The machine is equipped with an emission controlled C13 Caterpillar diesel engine that provides 440 hp (328.2 kW) @ 2200 rpm. There is a 200 gal. (757.1 L) fuel reservoir and a 320 gal. (1211.3 L) hydraulic oil reservoir. |
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Vibrators and Auger
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 Sixteen vibrators and sixteen vibrator circuits are standard on the GP-4000. Available for wider paving widths are the right-hand and left-hand modular extension packages. Each package has an additional sixteen vibrator circuits and a stationary cooler with hydraulic fan to cool the vibrator circuit oil. When equipped with both of these optional packages, the paver could then accommodate up to 48 vibrators.
(Right Photo) The GP-4000 is equipped with the 5000 series open-front mold. It has a reversible 16 in. (406 mm) diameter hydraulically-powered split auger. The auger speed provides up to 70 rpm while spreading the concrete across the width of the slab.
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Transport
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 The GP-4000 minimum transport height for the two-track is 8 ft. 7.5 in. (2.63 m) without tracks and mold. Minimum transport height for the four-track is 8 ft. 3.8 in. (2.54 m) without tracks, legs, pivots, and mold.
Minimum transport width for the two-track without tracks and mold and for the four-track without tracks, legs, pivots, and mold is 9 ft. 7.8 in. (2.94 m).
The minimum transport length for the two-track machine is 20 ft. 10.8 in. (6.37 m) without tracks, mold, and frame inserts.
The minimum transport length for the four-track is 19 ft. 8.5 in. (6 m) without tracks, legs, pivots, mold, and frame inserts.
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 G21 is GOMACO’s award-winning, proprietary software and control system. GOMACO was recognized for its commitment of resources to the development of this revolutionary software and operating system that combines intelligence with simplicity for GOMACO construction equipment. It is one of the few operating systems awarded a Top 100 Award from Construction Equipment magazine and a Top Innovations Award from Equipment World magazine. The G21 operating system is exclusive to GOMACO.
Read more about the G21 digital operating system.
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GOMACO’s Optional G22 Operating System
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 G22 is GOMACO’s proprietary software and control system. The GOMACO G22 is a revolutionary software and operating system that combines intelligence with simplicity for GOMACO construction equipment. The new graphical display provides the operator with an easy to understand interface to the machine controls. The G22 operating system is exclusive to GOMACO products.
The user-friendly screen and controls are simple, to allow operators to learn in a very short time. A simplified approach with screen icons reduces the operator’s learning curve to a minimum. The G22 features a 6.5 in. (165 mm) anti-glare display screen with sensor-controlled backlight levels. It provides superior visibility under all operating conditions. A dual language feature is available on the G22. It features the ability to operate in English or a second language. It also offers the choice of metric or imperial measurements.
Read more about the G22 digital operating system.
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Only GOMACO Offers Exclusive “Smart” Cylinders Featuring Push-Button Steering Control Setup
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 Only GOMACO offers “smart” cylinders to aid in the setup and operation of the four-track paver, especially in minimum-clearance projects.
Steering control has been simplified with exclusive “smart” cylinders, used for dependable steering control feedback, eliminating the sprocket, chain, and potentiometer at the top of each leg.
The “smart” cylinder reduces moving parts and eliminates the physical adjustments to the steering system.
GOMACO’s exclusive G21 digital controller now makes it possible to have push-button steering setup. The “smart” cylinders can be taught the desired degree of leg rotation, so that the tracks do not strike any object in minimum-clearance requirements. The operator has the option of overriding this setting.
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360 Degree Counter-Rotation Provides Mobility
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| The unique counter-rotation programming with the exclusive G21 operating system allows the paver to turn 360 degrees within its own dimensions, providing excellent job-site mobility. |
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GOMACO’s Control System Easily Interfaces With New Stringless Technology
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 GOMACO Corporation has the control system of the future. The G21 technology allows GOMACO’s slipform pavers, trimmers, and placer/spreaders to be controlled by an automated 3-D machine-control system and not by stringline. The 3-D control system is adaptable to the exclusive G21 control system. This system can accommodate radii or superelevations automatically according to design data. Real-time navigation systems allow the project data created in the CAD system to be directly put into the paving process. |
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Bar Insertion Systems Designed To Fit Your Project Specifications
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GOMACO offers several bar insertion systems that are designed to accommodate your project specifications. Hydraulic cylinder, air-powered and manual insertion are the three types of bar insertion. Bar inserter attachments include the frame-mounted, mold-mounted, sidemounted, and trailing form. GOMACO’s bar inserters provide easy and accurate bar placement at an exact job specification.
Female keyway with hydraulic side bar insertion and vibration to the bar - The hydraulic system includes vibration to the bar. Vibration is applied to the bar during insertion, which provides consolidation of concrete around the bars. This system requires one vibrator circuit. The minimum slab depth required is 12 in. (305 mm) and the maximum bar length is 30 in. (762 mm).
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Unparalleled Accuracy With The GOMACO Power Transition Adjuster (PTA)
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GOMACO’s hydraulically powered transition adjuster (PTA) provides on-the-go transitions in the crown of the concrete slab.
A switch in the operator’s console controls the PTA in a positive or negative (up or down) motion. This eliminates the crown in the paving mold/slab or brings the crown back into the mold/slab. These transitions are necessary in paving through superelevations and intersections. This simple solution provides an easy method for an operator to perform a smooth transition where necessary and accomplish the required slab profile as specified.
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GOMACO’S Sensor Equipment Is Reliable And Cost Effective
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 Sensor line and sensors provide the grade and steering information linked to the GOMACO G21 digital operating system, located on the operator panel.
The GOMACO electronic-over-hydraulic sensor system provides intelligent control of grade and steering for paving accuracy, superior rideability and ease of operation.
GOMACO sensor line is designed specifically for electronically controlled equipment. GOMACO line rods are 3/8 in. (9.5 mm) diameter plated steel. The 18 in. (457 mm) length of the line rods allow an adjustment range of 12 in. (305 mm) for sensoring accuracy. The line rod clamps are rustproof and durable, made of solid aluminum.
GOMACO’s 48 in. (1219 mm) long sensor line stakes are machine tapered for easy driving and fast setup. The 3/4 in. (19 mm) diameter stake resists bending.
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Ultimate Paving Systems
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5000 Series Auger/Strike-Off Mold
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5000 Series Open-Front Mold
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(1) The front split auger serves to spread the concrete to a predetermined width. The right-hand and left-hand drive sections are independently controlled with variable speeds.
(2) The strike-off is split for full, independent control. Both strike-off plates can be vertically controlled on the right and left sides, to meter material into the mold.
(3) The GOMACO grout box auger is for control of material through transitions or superelevations.
(4) Vibration is provided to the throat area of the mold for consolidation of concrete. The vibrators, with an automatic on/off control, activated with machine movement, are hydraulically powered with variable speeds up to 10,500 vpm. The vibrator positioning is hydraulically controlled for ease in start-up and finish.
(5) The GOMACO tamper bar system tamps down the aggregate even with the surface of the pan, and assists in consolidation. The tamper bar is hydraulically powered with an automatic on/off control, activated with machine movement.
(6) The finishing pan serves to level the concrete. The 5000 series mold and stainless is 60 in. (1524 mm) from front to back.
(7) Adjustable stainless steel is exclusive to the GOMACO system. This seals the voids and provides the troweled GOMACO finish out of the mold.
(Items #1 and #2 Apply To Auger/Strike-Off Mold Only)
5000 Series Molds Available
5000 series open-front mold with a 16 in. (406 mm) auger and a maximum speed of 70 rpm @ 34 gpm (128.7 Lpm) flow.
5000 series auger/strike-off mold with a 20 in. (508 mm) front auger and a maximum speed of 42 rpm @ 34 gpm (128.7 Lpm) flow and a 16 in. (406 mm) grout box auger with a maximum speed of 12 rpm @ 8 gpm (30.3 Lpm) flow.
5400 series paving mold - Click here for more details.
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Edge Slump Control From GOMACO
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| GOMACO offers edge slump control to accommodate slump and mix design. Edge slump control is available in hydraulic or manual adjustments in the mold. |
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Vertical Hinged Sideplates
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| GOMACO’s Vertical Hinged Sideplates have hydraulic control for ease in start-up from an existing slab. The 4 in. (102 mm) cylinder stroke allows the split sideplates to open and close. This provides less labor and a smoother transition to the new slab. The Vertical Hinged Sideplates can be raised or lowered up to 19 in. (483 mm) to negotiate headers and other obstacles. The Vertical Hinged Sideplates are for four-track pavers only. |
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GOMACO Auto-Float®
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The GOMACO Auto-Float is available as an attachment for the GP-4000 and all GOMACO slipform pavers. It is designed to automatically seal the concrete surface during the paving operation.
Click the graphic to the right for additional information.
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Designed For Safety
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The GP-4000 is carefully designed to give years of dependable and safe service. Emergency stop buttons are located on strategic areas of the machine. The E-Stops are on the operator’s console and on corners of the machine. Other safety features include track guards, warning decals, an operator’s manual, and a safety manual. GOMACO machines are also designed to provide the operator maximum visibility over the entire paving operation.
GOMACO Corporation recommends the implementation of all safety procedures.
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GP-4000 Photos:
Four-Track & Two-Track |
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Download The GP-4000 Brochure
(PDF Format) |
| GP-4000 Slipform Paver Specifications |
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Download The GOMACO Full Line
Brochure (PDF Format) |
GP-4000 Information In:
Deutsch - Español - Francais - Italiano |
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Around The World 39.2 - Baulderstone Hornibrook Pty Ltd
Short-Term Inconvenience Provides Long-Term Fix At New York's John F. Kennedy (JFK) International Airport - Tutor Perini Corporation
Country of Georgia Chooses Concrete For Silk Road Project - Ashtrom International Ltd.
Bar Insertion Accuracy And Paving Production On A California Highway - Security Paving Company
Around The World 36.3 - Ashtrom International Limited
Introducing A New Slipforming System To The Czech Republic - Skanska DS a.s. |
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Around The World 35.2 - CEMEX
Paving 100 Miles (161 km) Of Concrete Toll Road In Texas - Lone Star Infrastructure
Around The World 33.2 - Guangdong Changda
California Canal - Baldi Brothers
Working Out On The North Forty - Lawson Construction Company
Route 30 And The IDBI - Coffman Specialties, Inc.
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