BALLAST BLASTER UNDERCUTTER FOR TILTROTATOR COUPLER SYSTEMS
UNDERCUTTING WITH EXCAVATORS AND BACKHOES
The DymaxRail Ballast Blaster undercutter attachment features advanced patented design and durability. A Ballast Blaster undercutter efficiently removes fouled ballast rock and mud by cutting and pulling the material out from beneath the railway tracks. This attachment adapts to railway excavators and backhoe loaders equipped with a tiltrotator coupler system.
BLASTER WEAR PLATES
Our patented Ballast Blaster Undercutter features bolt-on indexable wear plates with full carbide protection that surrounds all sides of the cutter bar and includes a 2 year warranty.
BI-DIRECTIONAL CUTTING
A DymaxRail Ballast Blaster cuts and removes ballast faster with its innovative chain design. The Dymax Carbide Tooth (DCT) features two-sided protection, allowing operators to cut in both directions.
Works with the tiltrotator system you already have
The Ballast Blaster for Tiltrotator mounts directly to your existing tiltrotator coupler — no additional hydraulic kits, no machine modifications. Compatible systems include SMP, Engcon, Steelwrist, and Rototilt. Because the tiltrotator handles positioning, your operator can cut from either side of the track without repositioning the machine, which matters on tight networks and short track windows. Contact DymaxRail with your machine weight and tiltrotator model to confirm the right configuration.
When an on-track machine isn’t the answer
Full ballast cleaning machines have their place — but they require dedicated track time, significant lead time to mobilize, and are sized for production runs, not spot work. Rail networks increasingly use excavator-mounted undercutters for mud spots, targeted fouling, areas around switches and crossings, and any situation where getting a large machine on track isn’t practical. The Ballast Blaster works from a hi-railed excavator or backhoe already on your crew — so you’re not scheduling around a machine, you’re solving the problem in the same window you’re already in.
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For 8T Excavators and Backhoe Loaders
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For 12-36T Excavators
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Carbide replaceable wear plates and mechanical chain tensioner
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Carbide wear plates and automatic chain tensioner
AUTOMATIC CHAIN TENSION
- For 13-36T models including 10, 12 and 15 foot cutter bar lengths.
- Provides shock absorbing performance to increase chain life and reduce chain breaks.
- Includes tensioner gauge for visual recognition of chain tension pressure.
DRIVE MOTOR PROTECTION
- Full shroud protection around drive sprocket.
- Reduces seal contamination by keeping unwanted debris out.
- AR400 wear plates provide additional wear protection.
SERVICE. SIMPLIFIED.
When it’s time to service, it’s quick and easy with the removable top adapter.
SPECIFICATIONS
Does your machine have a pin grab coupler? Learn about the Ballast Blaster Undercutter for Pin Grab Couplers. →
FAQ
WHAT IS A BALLAST UNDERCUTTER ATTACHMENT?
A ballast undercutter is a hydraulic chain-driven attachment for excavators and backhoes that cuts beneath railway tracks to remove fouled ballast, mud, and contaminated material. It slides under the ties and rail, then pulls the material out from below — restoring drainage and track geometry without removing the rail.
HOW IS AN UNDERCUTTER ATTACHMENT DIFFERENT FROM AN ON-TRACK BALLAST CLEANING MACHINE?
On-track ballast cleaners are high-production machines that require dedicated track time and significant mobilization. An undercutter attachment works from a hi-railed excavator or backhoe your crew already has on site — making it faster to deploy, easier to get on and off track, and better suited for spot maintenance, mud spots, and congested rail networks where windows are short.
WHAT CAUSES BALLAST TO BECOME FOULED?
Ballast fouls when fine particles — from tie breakdown, subgrade migration, coal dust, or weathering — fill the voids between the stone. Once those voids are blocked, drainage fails, water is retained, and the track bed softens. Left unaddressed, fouled sections develop mud spots, track geometry issues, and accelerated component wear.
WHAT SIZE EXCAVATOR DO I NEED?
The Ballast Blaster is available for machines from 8-ton backhoe loaders up to 36-ton excavators. Bar lengths range from 6 to 15 feet depending on machine class. See the model table above to match your machine weight to the correct model.
CAN A BACKHOE LOADER USE A BALLAST UNDERCUTTER?
Yes. The Ballast Blaster is available in models specifically sized for backhoe loaders and 8–11 ton excavators, with 6 ft and 8 ft bar options and a 4.1 in (104mm) cut width.
WHICH TILTROTATOR SYSTEMS IS THE BALLAST BLASTER COMPATIBLE WITH?
The Ballast Blaster Tiltrotator model is designed to mount directly to tiltrotator coupler systems including SMP, Engcon, Steelwrist, and Rototilt. No machine modifications are required. Contact DymaxRail to confirm fitment for your specific machine and tiltrotator combination.
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