The Challenge

Fans, blowers, and compressors move abrasive, corrosive, and dirty gas streams that erode blades, unbalance rotors, and coat surfaces with deposits. As blades wear and material builds up, efficiency drops, vibration rises, and bearings and seals fail early. Replacing a large fan rotor is costly and slow, and welding repairs distort thin blade sections.

A Real Rumford Example

Before

The Problem

Bare Blower Rotor

A steel mill blower rotor ran on bare metal, collecting deposits that choked airflow and threw the rotor out of balance.

ProblemSurface Build-Up
EffectLost Efficiency
RiskImbalance & Vibration

Hover for Belzona coating →

After — Belzona

The Solution

Coated with Belzona 1341

Grit blasted to clean metal, then coated with Belzona 1341 Supermetalglide — a smooth, hydrophobic surface that sheds build-up and recovers efficiency.

CoatingBelzona 1341
SurfaceSmooth & Hydrophobic
Build-UpReduced

A smooth, hydrophobic Supermetalglide surface resists deposits and helps recover aerodynamic efficiency.

Read the full case history →

A real Rumford Industrial Group project using Belzona solutions. Outcomes vary by fan size, gas stream, and extent of erosion — contact Rumford Industrial Group for a project-specific assessment.

Centrifugal and axial fans, ID and FD fans, blowers, and compressor components suffer erosion from particulate-laden gas, corrosion from acidic condensates, and fouling that unbalances the rotor. Even modest metal loss changes blade geometry and destroys the balance a rotor needs to run smoothly.

Belzona metal repair composites rebuild eroded blades and impellers to profile, while smooth, release-promoting coatings resist build-up and protect against erosion-corrosion. Applied in situ by Rumford Industrial Group, they restore balance, efficiency, and service life without a replacement rotor.

Belzona Solutions for This Application

Metal Rebuilding & Component Repair

Repairing worn fan blades, bearing/bush housings, keyways, cracked and holed casings, compressor housings, air receivers, and filter/separator equipment back to original profile.

Erosion, Corrosion & Abrasion Protective Coatings

Coatings applied to fan blades, housings, intake vanes, compressor housings, and filter/separator equipment to resist abrasion, erosion, and corrosion, including at elevated temperatures.

Self-Lubricating Shaft Rebuilding

Self-lubricating epoxy composites used to quickly and efficiently rebuild fan and equipment shafts to their original profile, reducing friction and wear.

Efficiency Enhancement Coatings

Specialty coatings that improve rotary equipment efficiency, with gains of up to 20% recorded on refurbished equipment.

What Belzona Can Do for Fans, Blowers, & Compressors

Rebuild damaged fan blades

Restore eroded and pitted blade profiles in situ with machinable composites — no welding or replacement rotor.

Apply protective coatings

Shield blades, housings, and vanes from erosion, corrosion, and abrasive particulate attack.

Rebuild fan blade hub locations

Reform worn hub seating areas so blades locate and clamp correctly on reassembly.

Repair holed and cracked casings

Rebuild through-holes and cracks in fan and blower casings without hot work.

Rebuild internal casing damage

Fill internal wear, grooving, and erosion damage and re-establish smooth gas-path surfaces.

Seal leaks

Seal leaking joints, casings, and air receivers with surface-tolerant repair materials.

Repair turbo blower casings

Rebuild eroded and corroded turbo blower casings and housings back to service condition.

Rebuild and realign pillar block bearing housings

Restore worn housing bores and correct alignment using forming or machining techniques.

Repair vane guides

Rebuild worn inlet vane guides so control vanes move freely and seat accurately.

Restore cone clearances

Re-establish correct inlet cone-to-impeller clearances lost to wear and erosion.

Repair and protect end covers and valve plates

Rebuild pitted compressor end covers and valve plates, then coat to resist further attack.

Repair shafts by machining techniques

Build up worn shaft areas and machine back to precise tolerances after cure.

Repair shafts by forming techniques

Reform worn shaft journals and seal areas on-site using cold-cure forming methods.

Rebuild intercooler tube sheets

Rebuild corroded intercooler tube sheets and protect them against erosion-corrosion.

Rebuild damaged rotors

Return eroded rotor surfaces to profile to help restore balance and reduce vibration.

Rebuild and protect the leading edge of wind turbine blades

Rebuild rain- and sand-eroded leading edges and coat them for long-term protection.

See it on our interactive Solution Maps

Explore fan, blower, and compressor repair areas hands-on with Belzona's interactive industry maps.

Browse all Solution Maps →

Fans, Blowers& Compressors

Fans, Blowers
& Compressors