Grundomat 45 Extra Short mole: trenchless installation notes for UK site engineers
Reviewed by Tom Sullivan

First reported on The Construction Index
30 Second Briefing
Tracto has launched the Grundomat 45 Extra Short mole in the UK, a trenchless pipe-laying tool just 800mm long and 8kg in weight for sites with severely constrained entry and exit pits. The pneumatic mole delivers 580 impacts per minute and is offered in either high-strength steel or hardened alloy steel, targeting service connections and short bores where standard-length tools are impractical. An initial batch of 40 units is stocked at Tracto UK’s Bedford headquarters, with early uptake from groundworkers, contractors and utility installers.
Technical Brief
- Pneumatic mole operates by percussively displacing soil, forming a bore without bulk excavation.
- Shortened 800 mm body directly reduces pit length, useful near buried services or confined chambers.
- Reduced excavation volume cuts spoil handling, cart-away, and reinstatement quantities on utility jobs.
- Lower reinstatement footprint benefits paved, landscaped or trafficked surfaces where full-width trenching is constrained.
- 8 kg unit weight allows manual handling by a single operative, easing deployment in tight access points.
- High-strength versus hardened alloy steel options allow matching tool wear resistance to abrasive ground conditions.
Our Take
An impact rate of 580 blows per minute on such a short mole suggests it is aimed at maintaining bore accuracy over short shots in mixed ground, which is often a challenge on small utility connections and service laterals compared with longer, heavier impact moles.
Stocking an initial 40 units at Tracto UK's Bedford HQ indicates Tracto expects near-term demand from multiple contractors rather than a niche, made-to-order tool, which could normalise use of small-diameter trenchless installations on minor projects rather than reserving them for specialist crews.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
Related Articles
Related Industries & Products
Mining
Geotechnical software solutions for mining operations including CMRR analysis, hydrogeological testing, and data management.
Construction
Quality control software for construction companies with material testing, batch tracking, and compliance management.
CMRR-io
Streamline coal mine roof stability assessments with our cloud-based CMRR software featuring automated calculations, multi-scenario analysis, and collaborative workflows.
HYDROGEO-io
Comprehensive hydrogeological testing platform for managing, analysing, and reporting on packer tests, lugeon values, and hydraulic conductivity assessments.
GEODB-io
Centralised geotechnical data management solution for storing, accessing, and analysing all your site investigation and material testing data.


