The 54612726 VB78 vibrating tamper bar is a screed component designed for asphalt paver pre-compaction. Manufactured by JESTIN from hardened alloy steel, this bolt-on unit installs on ABG, Vogele, and Volvo paver screed systems. It delivers high-frequency vibration to the asphalt mat before the screed plate passes, increasing initial density and reducing the number of roller passes required on highway, airport runway, and bridge deck projects. At 7.2 kg with dimensions of 550 × 70 × 28 mm, the unit matches original VB78 specifications and carries a 1-year warranty.
The tamper bar is machined from high-grade hardened alloy steel with a precision-ground surface. This material allows the component to withstand continuous high-frequency impact and sustained contact with hot asphalt mix at temperatures up to 160°C. The precision-ground finish ensures consistent contact across the full screed width, contributing to uniform pre-compaction.
The VB78 series tamper bar operates at high frequency to consolidate the asphalt mat immediately after material placement. This pre-compaction step raises initial mat density, which reduces the number of roller passes needed to reach target density and contributes to improved final surface smoothness on high-specification paving projects.
The unit features a bolt-on design with pre-drilled mounting holes that match original VB78 specifications. This allows direct replacement without modification to the screed frame. Installation can be completed using standard workshop tools during routine screed maintenance, minimizing machine downtime.
The 54612726 tamper bar fits the following asphalt paver and screed systems: ABG6820 and ABG7820 pavers with VB78 screed, ABG325 and AB500-2TV screed systems, Vogele S1800-3 and S2100-3 pavers, and Volvo P8720B and P8820B pavers.
During screed overhaul, the tamper bar is commonly replaced alongside screed plates (part numbers 2042536 and 2042535), wiper rubbers (part numbers 4601112254 and 4601112253), tamper drive belts or chains, and tamper bearings. Replacing these wear items as a set helps restore full screed performance and reduces the risk of premature failure of individual components.
Item | Details |
|---|---|
Part Number | 54612726 |
Product Name | Tamper Bar / VB78 Vibrating Tamper Bar |
Brand Compatibility | ABG / Vogele / Volvo |
Fit Models | ABG6820 / ABG7820 / ABG325 / AB500-2TV / S1800-3 / S2100-3 / P8720B / P8820B |
Weight | 7.2 kg |
Dimensions | 550 × 70 × 28 mm |
Material | Hardened alloy steel, precision ground |
Tamper Type | VB78 series, high-frequency |
Function | Asphalt pre-compaction before screed |
Related Parts | Screed Plate (2042536/2042535), Wiper Rubber (4601112254/4601112253), Tamper Drive Belt/Chain, Tamper Bearing |
Warranty | 1 year |
Installation | Bolt-on replacement |
Before installation, inspect the screed frame for cracks or deformation and verify that mounting holes are free of debris. Torque mounting bolts to the paver manufacturer's specification. After installation, run the tamper at low frequency for several minutes while checking for unusual vibration or loose fasteners.
For maintenance, inspect the tamper bar surface weekly for wear patterns, cracking, or deformation. Replace the tamper bar when surface wear exceeds 3 mm or when cracks are detected. Always replace tamper bars in pairs to maintain even compaction across the screed width. For pricing and lead time on bulk orders, contact the JESTIN sales team with your paver model and required quantity.
A tamper bar provides initial pre-compaction of the asphalt mat before the screed plate finishes leveling. It uses high-frequency vibration to increase mat density, which reduces roller passes and improves final pavement quality.
Replace the tamper bar when surface wear exceeds 3 mm, when visible cracks appear, or when initial mat density drops below project specifications. Routine inspection during screed maintenance will identify these conditions.
Yes. The 54612726 VB78 tamper bar is compatible with Vogele S1800-3 and S2100-3 paver screed systems, in addition to ABG and Volvo models listed in the specifications.
The 54612726 tamper bar carries a 1-year warranty from the date of delivery, covering manufacturing defects in material and workmanship under normal operating conditions.
