50 Kpa LNG STS Floating Pneumatic Marine Rubber Boat Dock Fender

50 kpa LNG STS floating pneumatic marine rubber boat dock fender

The Pneumatic Fender (Yokohama Fender) is an abrasion-resistant rubber fender filled with high pressure air. It can easily be deflated which allows simple and cost effective relocation and re-commissioning in other locations.

Advantages of JRB pneumatic fenders:

A versatile and well proven design. JRB pneumatic fenders are available as sling type or with chain &tyre nets to suit a variety of inshore and offshore applications.

Fender Type

Detailed Imagine

What’s the Structure of Pneumatic Rubber Bumper?

Float rubber fender is made from inner rubber, synthetic-tyre-cord layer for reinforcement, outer rubber, flange opening and other metal parts.

The inner rubber is made from natural rubber with rubber content higher than 53%, which ensures the air retention of the pneumatic fender, and it can be used for a long time without obvious pressure relief. It is available in thickness from 2 to 4mm, which is determined according to the requirements of pneumatic rubber fenders of different specifications.

The synthetic-tyre-cord layer for reinforcement is gumming, and it features thick warps, competitive density and high strength. It is bonded with the inner and outer rubber after gumming, and then the three layers are bonded together after being vulcanized at high temperature. Therefore, the cord layer has high strength, abrasion and impact resistance, great thermostability, good adhesion with rubber, aging resistance and easy processing.

The outer rubber is mainly used to protect the reinforced layer and the inner rubber and further ensure the air retention of the float rubber fender.

 

Yokohama Pneumatic Rubber Fenders are constructed of several layers of strong tire-cord, and are thus resistant to pressure and cutting. The safety factor adopted in the design of this fender is based on accepted theory and has been proven by extensive experimentation. Operational experience over a long period of time attests to its high safety and reliability, and hydraulic pressure tests have proven the strength to be suitable. Furthermore, large-size fenders are equipped with a safety valve to release the inside air in the event of accidental over-pressure. The figure below shows data obtained from many destructive pressure tests at various percentage compressions. Such data are used to establish a basic minimum endurable pressure (MEP) curve for pneumatic rubber fenders.

 

Advantages at Inclined Berthing

 

Ships usually make initial contact with the dock or another ship on STS operations at an oblique angle. In the case of solid rubber fenders or foam fenders, rated reaction force and energy absorption decreases considerably at inclined compressions compared with parallel compression. In order to compensate for the decrease of energy absorption at inclined compression, it is necessary to use larger sizes in the case of solid rubber fenders or foam fenders.

 

 

Adaptable to the Tide

 

Yokohama Pneumatic Rubber Fenders basically float on the water in an unrestricted vertical plane corresponding to the tidal range and ship's vertical movement. This means that energy absorption always takes place at the most suitable position, and that only one fender is required per dolphin.

 

 

PNEUMATIC FENDER DIMENSIONS AND PERFORMANCE VALUES

Pneumatic 50 (Metric)

Pneumatic 80 (Metric)​

Applications