Propeller Analysis

Advanced propeller measuring and analysis with Hale MRI. Increased Performance, Speed and efficiency is our goal when bringing propellers to a high level of tolerance. Each prop is then static balanced. Dynamic Balancing can be preformed at an additional cost.

Propeller Repair

We repair props from 5" to 50". Hale MRI gives us the accurate information to enhance repair capability.

Propeller Reboring

We have the ability to rebore inboard propellers up to 42" on our Bullard Vertical Turret Lathe. The bore is assured to be true and will not "follow" the existing keyway.(standard tapers only.)

Propeller Balancing

With every repair, we preform the static balance at no additional cost. We also offer Dynamic Balancing at an additional cost to the repair. We feel that Dynamic Balancing gives a better result.


Permanent Reports are kept in our database and one can be furnished upon request with each repair.

ISO 484 Class Tolerances

Class Tolerances
S Very High Tolerance
1 High Tolerance
2 Medium Tolerance (Standard Repair)
3 Low Tolerance

ISO 484/2 Pitch Tolerance (minimums may apply)

Class S 1 2 3
Local Pitch ±1.5% ±2.0% ±3.0%
Radius Average ±1.0% ±1.5% ±2.0% ±5.0%
Blade Average ±.75% ±1.0% ±1.5% ±4.0%
Propeller Average ±.50% ±.75% ±1.0% ±3.0%