The road crew in Abu Dhabi had been chasing a compaction quality problem for three days. The Vogele Super 2100-3 was laying perfectly smooth mat — visually indistinguishable from a good job — but core samples showed variable density across the lane width. The screed extension plates were performing differently on each side. After systematic checks, the issue was traced to worn rubber-bonded mounting pads on the left screed extension vibration exciter. The worn pads had shifted the exciter’s resonance frequency, changing compaction effort on the left half. New pads: $180. Project penalty for out-of-spec compaction: $28,000.
Asphalt pavers are precision machines working to tight tolerances — layer thickness to ±3 mm, cross-slope to ±0.2%, and compaction density to ±2% are standard contract requirements on highway projects. The screed system that achieves these tolerances relies on vibration exciters, heating systems, and floating mechanisms that incorporate rubber components throughout. Beyond the screed, the paver’s engine, traction drive, and operator station all use rubber isolation to manage vibration in an inherently harsh working environment.
This guide covers the complete rubber parts inventory for the three most common asphalt paver brands in the global market: Vogele (WIRTGEN Group), Dynapac (Atlas Copco/Fayat Group), and Bomag.
Need asphalt paver rubber mounts or screed components? Request a quote from Babacan Group — we stock components for all major paver makes and models.
Screed System Rubber Components
The floating screed is the defining feature of an asphalt paver. It levels and pre-compacts the asphalt mat through a combination of self-weight, vibration, and heat. Rubber components in the screed system affect compaction quality directly.
Screed Vibration Exciter Mounts
Asphalt screed tamping and vibration exciters generate controlled vibration at 25-60 Hz to pre-compact the asphalt mat as it passes under the screed plate. The exciter shaft bearings and drive mechanisms mount to the screed body through rubber isolation pads that:
- Decouple exciter vibration from the screed frame (prevents fatigue cracking of the frame)
- Maintain consistent exciter amplitude
- Allow the exciter to be positioned correctly relative to the screed plate
Exciter mount specifications for common pavers:
– Vogele Super 1800-3: Shore A 45-55, natural rubber, operating temperature 0°C to +90°C
– Dynapac F Series: Similar compound with reinforcing fabric insert for higher load capacity
– Bomag BF 600: NR/SBR blend with increased ozone resistance for extended outdoor exposure
Critical: When wear changes the mount’s dynamic stiffness, the exciter resonance frequency shifts. A mount worn 20% softer will lower the resonance frequency by approximately 10%, reducing compaction effort at the set vibration speed. This is the mechanism behind the Abu Dhabi case described above.
Screed Extension Rubber Seals and Edge Strips
Extendable screeds (both hydraulic and mechanical) use rubber seals at the extension joints to prevent asphalt material from entering the extension mechanism. These seals:
– Seal against asphalt at 140-180°C (284-356°F)
– Must resist oil and bitumen contact
– Need flexibility to accommodate extension movement
Material selection: Silicone rubber for the highest-temperature applications; EPDM or chloroprene for lower-temperature extension seals. Bitumen resistance is essential — many generic rubbers swell and degrade in contact with asphalt binders.
Screed Drag Plates and Wear Pads
Some screed designs incorporate rubber wear pads on the bottom edges of the end plates and extension frames. These reduce metal-to-metal contact and protect the paved surface from scratching during startup and shutdown.
Engine and Powertrain Isolation
Paver diesel engines typically run at 1,500-2,000 rpm during paving operation, producing constant vibration that must be isolated from both the machine structure and the operator station.
Engine Mount Systems
Standard paver engine mounts are four-point systems using bonded rubber-metal isolation mounts:
– Vogele Super series: Front mounts in compression/shear configuration; rear mounts with anti-rotation brackets
– Dynapac F/SD series: Similar arrangement; rear mounts near the exhaust system require heat-resistant compound (operating temperature up to +110°C)
– Bomag BF series: Uses larger-diameter mounts due to higher engine power in the BF 800 and BF 900 range
Engine mount compound for pavers should be NR/SBR blend minimum, or heat-stabilized NR for installations near exhaust components. The high ambient temperatures on a paver operating in summer conditions (air temperature 40°C, paved mat temperature 160°C) elevate the thermal environment for nearby rubber components.
Hydrostatic Drive System Mounts
Pavers use hydrostatic traction drives — the engine powers hydraulic pumps that drive the track or wheel motors. The pump-motor assembly mounts to the chassis through rubber bushings that:
– Attenuate pump-generated pressure pulsation noise
– Allow slight misalignment between pump and engine coupling
– Damp hydraulic system resonances
Pressure pulsation from hydraulic pumps occurs at pump-shaft rotation frequency and its harmonics. A typical paver pump at 1,800 rpm generates primary pulsation at 30 Hz (for a 9-piston pump). Mount compounds tuned to attenuate this frequency range prevent the characteristic “hydraulic moan” that develops when pumps are tightly coupled to metal structures.
For reference, see our guide on construction machinery suspension parts for broader context on powertrain isolation in road construction equipment.
Operator Platform and Cab Isolation
The paver operator stands or sits above the hottest part of the machine — the asphalt mat and the heating system — for extended work shifts. Operator vibration isolation is regulated by the EU Vibration Directive (2002/44/EC), which sets daily vibration exposure limits of 0.5 m/s² A(8) as the action value and 1.15 m/s² A(8) as the limit value.
Operator Platform Anti-Vibration Mounts
The operator platform (control console and standing area) mounts to the paver through anti-vibration mounts that attenuate the screed vibration transmitted through the paver frame. Without these mounts, screed exciter vibration at 25-60 Hz would reach the operator directly.
Platform mount specifications:
– Natural frequency: 6-10 Hz (well below the screed excitation frequency)
– Load per mount: 100-200 kg
– Required attenuation at 40 Hz: >15 dB
The EU Vibration Directive 2002/44/EC requires employers to assess and reduce vibration exposure. Proper operator platform isolation is one of the most cost-effective compliance measures.
Seat Suspension Rubber Elements
Paver operator seats use suspension systems with rubber bump stops and progressive-rate cushions. These complement the platform isolation for transient inputs during machine travel and setup movements.
Track and Wheel System Rubber Components
Crawler Track Drive Components
Tracked pavers (the majority of highway class machines) use rubber-bushed track chain links and drive sprocket interfaces.
Track chain pivot bushings: Large-diameter rubber-lined bushings at the track pin joint allow slight angular articulation as the track passes around the drive and idler sprockets. Worn bushings increase track joint play, resulting in inconsistent track tension and potential drive chain skip.
Drive sprocket rubber pads (on some models): Rubber pads bonded to the track drive sprocket teeth reduce impact noise and absorb the engagement shock as track links engage the sprocket. These are wear items, typically replaced with the track chain.
Wheeled Paver Tire Components
Wheeled pavers (used for urban resurfacing and shoulder work) use pneumatic tires with rubber vibration isolation between the wheel hub and the paver frame. The floating axle design uses rubber springs to maintain constant ground contact pressure.
Heating System Rubber Hoses and Seals
Asphalt pavers use propane or diesel heating systems to heat the screed plates to 100-150°C (212-302°F) to prevent material sticking. The heating system uses rubber hoses and seals rated for the temperatures involved:
- Propane supply hoses: Must be rated for LPG service, minimum 25 bar pressure rating
- Heated oil system hoses (indirect heating): FKM or silicone rated to 180°C
- Sensor and control wiring grommets: Silicone compound for sustained temperature exposure
For guidance on shock absorber and damping component selection for road construction equipment, see our shock absorbers for construction equipment guide.
Comparison: Vogele vs Dynapac vs Bomag Rubber Requirements
Each manufacturer has preferences that affect rubber part sourcing:
Vogele (WIRTGEN Group):
– Strong preference for natural rubber compounds in screed mounts
– High-precision dimension requirements (±0.2 mm tolerance in screed exciter mounts)
– Extended temperature operating range specified for Middle East and Australian market machines
Dynapac:
– More use of synthetic rubber blends (SBR/NR) in powertrain mounts
– Particularly high vibration requirements from extended screed designs
– Platform mount specifications frequently updated with newer machine generations
Bomag:
– Bomag also manufactures compactors (see our Bomag and Hamm road machine rubber parts guide)
– Paver and compactor rubber parts are NOT interchangeable across the range
– BF 800/900 series uses higher-rated mounts due to machine weight and power
Quality Standards and Sourcing
Asphalt paver rubber parts sit in the mid-criticality range — failures are more likely to affect work quality than create immediate safety issues (unlike railway or mining applications), but quality problems become apparent quickly in the form of compaction density deviations.
When sourcing replacement rubber parts for asphalt pavers:
- Dimensional accuracy: Screed exciter mounts must be exact to OEM dimension ±0.3 mm to maintain resonance frequency
- Compound specification: Confirm temperature rating matches the installation position
- Chemical resistance: Bitumen/asphalt binder contact requires verified resistance
- Certification: ISO 9001:2015 quality management is the minimum standard for reputable suppliers
Babacan Group manufactures asphalt paver rubber parts at our Ankara facility under ISO 9001:2015 quality management. Our rubber mounts catalog covers Vogele Super series, Dynapac F and SD series, and Bomag BF series. Browse our rubber mount catalog or request a quote.
Replacement Schedule for Asphalt Paver Rubber Parts
| Component | Service Life | Replacement Trigger |
|---|---|---|
| Screed exciter mounts | 1,500-2,500 paving hours | Compaction density deviation, mount cracking |
| Engine mounts | 3,000-5,000 engine hours | Increased vibration, visual cracking |
| Operator platform mounts | 2,000-4,000 hours | Increased operator vibration reading |
| Track chain bushings | Per track chain replacement cycle | Increased track play (>3 mm per link) |
| Propane hoses | Annual inspection | Cracking, hardening, visible damage |
| Hydraulic pump mounts | 4,000-6,000 hours | Hydraulic noise increase, visual degradation |
Conclusion
Asphalt paver rubber parts are precision components in a precision machine. The screed exciter mounts determine compaction quality — worn or incorrect mounts produce pavement that fails cores. Engine and platform mounts determine operator health and machine longevity. Getting the compound, dimensions, and installation right matters on every project.
Key takeaways:
– Screed exciter mount wear changes vibration frequency, causing compaction quality deviations that may not be visually apparent
– Bitumen-resistant compound specification is essential for screed-area rubber components
– Operator platform isolation is a regulatory compliance issue under EU Vibration Directive 2002/44/EC
– Always verify temperature rating for mounts near exhaust and heating systems
Babacan Group stocks paver rubber parts for Vogele, Dynapac, and Bomag shipped from Ankara to road construction contractors globally. Request a technical quote for your specific machine model.