ZF Special Propellers, Special Order Props

Recreational Propellers, Commercial Propellers, Military Propellers, Propeller Repair - WILDCAT PROPELLERS

Sales | ZF Special Propellers

ZF Marine Special Propellers

Click here to access our ZF propeller sizing form. Input your data and submit to us online. Alternatively if you prefer to fill-out our ZF Excel prop-data sheet, please click here to download and complete. You may email back to us as an attachment or fax to us @ (757) 485-7839
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	Impellers ZF Marine has supplied a 3.44 m (11 ft, 3in) diameter propeller for a cavitation research tunnel at the National Taiwan Ocean University. This impeller is designed with adjustable pitch for different water speed.	Nozzled Nozzled propellers generate more bollard pull for tugs. ZF Marine offers a wide selection of different designs.

Model Test
Test propellers for models require the highest geometrical precision to ensure accurate test results. This precision is possible using advanced machining technology.

Propeller Materials
ZF Marine can offer various propellers with the materials of manganese bronze, and nickel aluminum bronze to high strength, special alloys. This means requirements for all types of applications can be met.

Keyless
For large propellers, hydraulic keyless hub fitting methods are commonly used. ZF Marine has wide experience and expert technicians to provide best solutions for fitting keyless hub propellers.

Optimum Propeller Selection
In order to select a suitable propeller with optimum efficiency and ensure low cavitation, low exciting force characteristics at the design point specified by the customer, the shape of the blade section (i.e. camber and thickness distribution chord-wise) must be carefully considered in addition to the skew, rake and pitch distribution in radial direction. Guidelines for choosing suitable blade sections are shown in the following table.

For sub-cavitation applications (vessel speed less than 32 – 33 knots) the theoretical design method according to NACA 66 is the optimal solution. When shaft inclined angle is less than 10 degrees. The NF section is especially designed for fast vessels running in the partial cavitation fired (non-uniform flow) typically experienced in installations using high shaft angles as well as fast container ships.

In the partial cavitation field (vessel speed more than 32 – 33 knots) empirical result data is needed, e.g. from a cavitation tunnel. Each year, ZF-FPS tests a new NF and EV design section, with modified Blade Area Ratio, Pitch Ratio and / or Camber Ratio. By this means, a wealth of data has been collected which can be used to develop NF section propellers for the most demanding applications.

ZF Fixed Pitch Propellers

ZF Propellers for All Vessels

ZF Design and Manufacturing

ZF Marine Series Propellers

ZF Marine Special Propellers

ZF Propellers Technical Info

Contact WildCat Props!
Custom propeller configurations are also available on request. Should you require assistance in selection of a new propeller suited to your vessel, restoration-repair of your existing propellers or prop tuning-maintenance please contact WildCat Props.

Read How WildCat Props Exceeds the Expectations of Our Customers!

A quick note to thank you for your excellent work over the last 5 years (those being years Wildcat worked on Backlash wheels), we have placed in the top three (first, second, third) for six tournaments. The smaller three blade wheels allow us to go slow for winter rockfish trips. And we like the economy of 20 knots/20 gallon/hr (combined). But I really get excited with the 24x27 ZF 4 blades. Your recommendations were right on: 30 knot cruise, 35 knot top end, zero cavitation, super smooth and (best of all) fuel economy!!! Right after we put the 4 blades on in Hatteras, we won the 2007 Hatteras Village Open with a 613# Blue Marlin and another release. If someone thinks you are too high - don't forget -you are saving them money on fuel. And that fuel expense is not likely to change!!!

Thanks again, Troy and Team,
Capt Steve Richardson owner/operator "Backlash"
Read more customer testimonials here | Also read customer propeller case studies

WildCat Propellers | 3932 Holland Blvd., Chesapeake, VA 23323 Ph: (757) 485-4260 | Toll-free: (888) 942-4260 | Fax: (757) 485-7839
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