Lifa Chen Marine Propeller｜Propeller Boss Cap Fins (PBCF)

Lifa Chen Marine Propeller (Zhoushan (Wuyang) Donghai‑Chen Lifa Propeller) produces propeller boss cap fins, which can be equipped for new‑build vessels or retrofitted on existing ships. Compatible with most fixed‑pitch and controllable‑pitch propellers. 舟山市 (五洋) 东海‑陈利发螺旋桨生产的螺旋桨消涡鳍,既可配套新造船,也可用于旧船改造加装,适配绝大多数定距桨与调距桨.

Drawing on over 40 years of manufacturing experience, our products are manufactured in compliance with CCS and RINA classification society rules. With reliable quality, the fins help save fuel, reduce hull vibration, suppress cavitation and protect propellers and rudders, widely used for cargo ships, bulk carriers, container ships, work boats and patrol crafts. 依托我厂 40 多年制造经验,产品按照 CCS,RINA 船级社规范要求生产,品质稳定,能够节省燃油,减轻船体震动,抑制空泡,保护螺旋桨与舵叶,广泛适用于货船,散货船,集装箱船,工作艇,公务艇等船型.

When the vessel is sailing, hub vortex will generate behind the propeller hub, wasting power energy. The vortex also causes vibration, noise and continuous erosion to rudders and other components. Installing boss cap fins can break concentrated hub vortex, recover wasted wake energy and convert it into effective thrust, achieving considerable fuel saving and cutting operational fuel cost. 船舶航行时,螺旋桨桨毂后方会产生毂涡涡流,造成动力损耗.涡流同时带来震动,噪音,持续冲刷损伤舵叶等部件.加装消涡鳍可以打散集中的毂涡,回收被浪费的尾流能量并转化为有效推力,实现可观的省油效果,降低船舶运营燃油成本.

Our PBCF are integrally cast in nickel‑aluminum bronze, same material as propellers. It features good seawater resistance, salt‑spray corrosion resistance and anti‑cavitation performance. Strict quality control avoids cracking and corrosion for long service life. Each unit is finely polished, with fin angles calibrated according to vessel working conditions. Accurate dimension inspection ensures smooth surface, preventing extra water resistance caused by poor workmanship and guaranteeing stable energy‑saving performance. 本款消涡鳍整体采用镍铝青铜合金铸造,和螺旋桨材质保持一致,耐海水,抗盐雾腐蚀,抗空泡剥蚀.严格质量管控,不易开裂腐蚀,使用寿命长久.每套产品经过精细打磨,鳍片角度按船舶工况校准,尺寸检验到位,表面光滑,规避加工粗糙带来的额外水流阻力,保障稳定节能效果.

Installation is simple: replace original boss cap and fasten with bolts. Retrofitting can be completed in dry‑dock. No modification to hull or existing propeller is required, time‑saving for old‑ship upgrading. All finished products are inspected to meet CCS and RINA requirements. 安装简便,直接替换原有桨毂帽,螺栓锁紧固定.在干坞内即可完成加装,无需改动船体与原有螺旋桨,旧船升级省时省力.成品全部检验,满足 CCS,RINA 规范要求.

Besides fuel saving, the fins weaken vortex impact on rudders and stern components, mitigate hull vibration and lower component wear to reduce maintenance frequency. Whether for new‑building supporting or fuel‑saving retrofitting for operating vessels, Lifa Chen Marine Propeller's PBCF is a cost‑effective solution. 除节油之外,消涡鳍可减弱涡流对舵叶,艉部构件的冲击,缓解船体震动,降低零部件损耗,减少维修频次.不管是新船配套,还是营运船舶做省油改装,舟山市 (五洋) 东海‑陈利发螺旋桨的消涡鳍都是高性价比方案.