FREQUENTLY ASKED QUESTIONS

Parameters such as boat length, beam, draft, engine power, gear ratio, and maximum engine RPM are analyzed in our engineering software to calculate the most efficient propeller diameter and pitch. Incorrect calculations can cause engine fatigue or reduced boat speed.

Yes, propeller blade bending from impact, material loss from cavitation, and cracks can all be successfully repaired through hydraulic pressing, welding with original Cu3 bronze alloy, grinding/polishing, and computer-controlled dynamic balancing.

Yes. Upon request at the order stage, we produce under the surveyor supervision of all respected classification societies such as Türk Loydu, Bureau Veritas (BV), RINA, DNV, and Lloyd's Register (LR), performing required material analysis and strength tests to obtain class certificates.

We use Cu3 (Manganese Bronze and Nickel Aluminum Bronze - Mn-Al-Bz) alloys in our propeller production, which have high resistance to seawater corrosion, excellent wear resistance and strength-to-weight ratio. All castings are done in our own foundry under spectral analysis control.

Average delivery time for standard propeller orders is 3-4 weeks. This may be extended when class certificates are requested or for very large diameter propellers. For urgent needs, special production planning is arranged.

Simply provide us with your engine brand, model, power, gear ratio, and boat information. Our engineering team will prepare the most suitable propeller project for you. You can also make preliminary calculations through our pervanehesabi.com website.

Yes. You can ship the propeller to be repaired via cargo to our factory. After receiving the propeller, damage assessment is performed and a photo report with price quote is sent to you. After your approval, it is processed and the repaired propeller is shipped to your address via cargo.

An unbalanced propeller transmits excessive vibration to the shaft, bearings, and gearbox, causing premature wear and mechanical failures. It also creates discomfort for passengers and crew. Dynamic balancing is performed with precise tolerances according to ISO 1940 standards.