Restore worn equipment to service for a fraction of replacement cost and lead time
Rebuild worn shafts, bearing housings, gearboxes, and mechanical components to original dimensions with machinable epoxy composites
No welding, no distortion
The Challenge
Rotating and load-bearing machinery wears. Shaft seats spin, keyways elongate, bearing housings go oval, and mating faces lose their fit — and once tolerances drift, vibration, heat, and secondary damage accelerate. Traditional fixes like welding and re-machining introduce heat distortion and residual stress, while replacement means long lead times and idle equipment.
Worn shafts, bearing and pillow-block housings, gearbox casings, pump wear rings, tapers, keyways, and machined faces are found in every plant with rotating equipment. Metal loss from fretting, spinning bearings, and general wear leaves components out of tolerance — where the choice has traditionally been an expensive weld-and-machine cycle or full replacement.
Belzona's machinable metal repair composites rebuild worn components back to original dimensions at ambient temperature — with no heat, no distortion, and no change to the metallurgy of the parent part. Once cured, the repair can be machined, drilled, or tapped to precise tolerances. Rumford Industrial Group brings this capability on-site across five states to get machinery back in service fast.
Solutions in the Field
Every repair tells a story. These illustrative examples show the kind of equipment, problems, and outcomes Belzona solutions deliver in the field — real project photos will be added here soon.
Specific Belzona product recommendations available on request — contact Rumford Industrial Group for a free technical consultation.
Components We Rebuild
Shafts & SeatsRebuild worn bearing and seal seats, tapers, and shoulders back to precise running tolerance.
Bearing & Pillow-Block HousingsRestore ovalised and fretted housing bores so bearings seat correctly and run true.
Keyways & SplinesRebuild and re-machine elongated keyways and worn splines to eliminate play and vibration.
Gearbox & Pump CasingsRepair cracked, eroded, or damaged casings and rebuild wear rings and clearances.
Machined & Mating FacesRestore flatness and fit on flanges, split lines, and mounting faces without machining the whole part.
Threaded & Bolted ConnectionsRebuild damaged threads, bolt holes, and fastener seats to reinstate secure connections.
Belzona Solutions for This Challenge
Machinable Metal Repair
High-strength composites that rebuild worn metal to original dimensions and can be machined, drilled, and tapped once cured — with no heat distortion.
Bearing & Housing Rebuild
Materials designed to restore ovalised bearing housings and shaft seats to a precise, correctly seated running fit.
Emergency Fast-Cure Repair
Fast-curing composites that return worn or damaged components to service quickly when downtime cannot be extended.
Wear-Resistant Rebuild
Ceramic-reinforced composites for components subject to ongoing abrasion, extending the life of the rebuilt surface.
High Temperature Repair
Repair systems rated for elevated operating temperatures where standard composites would soften under load.
Efficiency-Enhancing Coatings
Smooth-running coatings applied to rebuilt internals to reduce friction and improve mechanical efficiency.
How It Works
01
Assess & MeasureThe worn component is inspected and measured against original dimensions to define exactly how much material must be rebuilt and to what tolerance.
02
Surface PreparationThe area is cleaned and profiled — typically by abrasive blasting or mechanical abrading — to achieve the correct profile for a strong composite bond.
03
Composite RebuildA machinable metal repair composite is applied to rebuild the worn area. A release agent and forming technique can reproduce mating profiles precisely.
04
Ambient CureThe material cures at room temperature — no heat input, no distortion, and no metallurgical change to the parent component.
05
Machine to ToleranceOnce cured, the repair is machined, ground, drilled, or tapped to final tolerance and the component is returned to service.
See it on the interactive Solution Map
See how pumps and rotating equipment are repaired and rebuilt in Belzona's interactive maps.