Introduction
Rolla SP Propellers, founded by Phillip Rolla in 1983, leverages decades of racing experience to deliver high-performance propellers. In 2004, Rolla became part of Twin Disc, expanding its reach in marine propulsion solutions.

Services and Capabilities
Rolla offers comprehensive services in propeller design, manufacturing, and application, including hydrodynamic analysis, engineering capabilities, and computational fluid dynamics (CFD) hull analysis. Their extensive proprietary database of propeller performance profiles reduces development costs and time.

Quality and Standards
All products are developed in-house, ensuring tight control over processes. Rolla propellers are designed to meet various classification registers such as Lloyd’s Register, ABS, and RINA. They comply with ISO 484/2 standards, and a Computerized Measurement Machine (CMM) report is available for each propeller.

Product Offerings
Fully-Submerged Propellers: NiBrAl propellers range from 24" to 75" in diameter, supporting 500-4000 hp. Proprietary software designs these propellers, optimizing for shape and performance.
Surface-Piercing Propellers: Stainless Steel and NiBrAl propellers range from 16" to 65" in diameter, supporting 250-5500 hp. Rolla uses CFD software and extensive testing to optimize these propellers for various thrusts and conditions.

Conclusion
Rolla is a leader in propulsion technology, offering unmatched expertise and quality in propeller design and application.