On-site dynamic balancing corrects rotor unbalance in fans, blowers, pumps and other rotating assets reducing
vibration, protecting bearings and seals, and restoring smooth operation without removing the machine from service.
Typical symptoms that point to unbalance include high vibration at running speed, elevated radial loads on bearings,
excessive noise, and repeat failures after part replacement. Balancing removes the unbalance force so the machine
can operate within acceptable vibration levels.
How we work
- Safety preparation and lockout/tagout; mechanical pre-checks (mounting, guards, clearances)
- Baseline vibration measurements to confirm unbalance behavior
- Single-plane or two-plane balancing with a portable analyzer and reference marks
- Trial-weight run, calculation of correction weights and placement locations
- Application of weights (clips/bolts/adhesive/other per rotor design) and verification runs
- Final acceptance run and documentation of before/after vibration levels
Where we apply balancing
- Fans and blowers (axial and centrifugal)
- Pumps and impellers (where in-situ balancing is feasible)
- Rollers, couplings, small rotors and pulleys
- Generator/alternator rotors and similar equipment (by case)
We aim for vibration levels and residual unbalance that meet practical, field-proven acceptance criteria aligned
with industry and OEM guidance. When in-situ balancing is not appropriate, we advise shop balancing or corrective
actions (e.g., alignment, stiffening, or repair) before a balancing attempt.
What you receive
- Clear before/after vibration readings at running speed and harmonics
- Balance setup details (planes, weights, locations) and acceptance results
- Recommendations if further mechanical corrections are beneficial
Benefits
- Smoother operation and reduced forces transmitted to bearings and structure
- Extended bearing, seal and coupling life; lower energy waste and noise
- Minimal downtime thanks to on-site, in-situ procedure
Maintenance Services General Specification
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