Marine Propeller Manufacturers

 Boat Marine Propeller

Schottel 360 degrees steered rudder propeller is produced under Schottel technology in Germany.
It has 3 kinds of installation type: transom installation; well installation, deck installation .
 
Transom Installation
  
Transom installation is one of the three installation types. It is used for ships and vessels whose space of engine room are smaller, such as floating cranes, passenger ships, inland and coasting vessels etc. Amounting plate with sealing is fixed on the plate. That is, the upper of the Rudder Propeller is fixed on the pin axis, and the lower is clamped on the pushing ring. When releasing the thrust bearing, the propeller can easily be elevated backwards.
 
Elastic suspension for special Sound Proofing is available for this mode of installation.
 
Well Installation

The well installation is especially for tugs, ferries, well station, floating dock and survey ships.
 
The SMMC Rudder Propeller is mounted in the well. The stem length varies with the requirement of the application. The top mounting plate of the well should, if at all possible, be above the waterline so that the Rudder Propeller can be installed and removed when the ship is floating.
 
Well installation varies with the distance between the Rudder Propeller and the diesel engine. When the engine room is very small, the Rudder Propeller can be near to the diesel engine and suitable for application in long-range transmission between diesel engine and rudder propeller.
 
Deck Installation
 
Deck installation is a complete propulsion package. It is a reliable and compact propulsion plant. The chassis carries the totally enclosed propulsion system. The power of the diesel engine is transmitted to the rudder propeller through an elastic coupling, a hydraulic clutch and a universal shaft. The chassis is constructed with a hydraulic system, an electric control box, daily fuel tank and so on system units. Installation is fast and simple because they are essentially self-con-rained. Only to connect the minimum hoses and cables can make it available to obtain thrust. The desk installation unit merely has to be mounted and bolted onto a foundation of deck. Rudder propeller is mounted at the rear chassis.
 
The rudder propeller can be mechanically or hydraulically raised or lowered in vertical direction by means of a depth adjustment facility. This serves to ensure maximum propeller thrust at all vessel draughts by maintaining the correct propeller immersion.
 
For maintenance purposes, the rudder propeller can be pivoted out of the water to the rear hydraulically or mechanically by hand.
 

 
Max input torque of Rudder Propeller depends on the capacity of its transmit power of prime mover the kind of Rudder Propeller operation, the type of prime mover or the sort of vessel may influence the actual allowable input torque figure. Please consult with our technical staff before selecting the definite Rudder Propeller, the output torque Mp of the prime mover (general diesel engine, hydraulic of electric motor) is the most important factor and is calculated as follow:
 
Mp <= Sf. MR
Mp = N·9549/n
Sf = fz * fi * fs
Mp: Nm (Output torque of prime mover in Nm)
Sf: (Rudder Propeller service factors)
Mr: Nm (Max input torque of Rudder Propeller in Nm)
N: Kw (Output power of prime mover in Kw)
n: r/min (Input speed of Rudder Propeller in r/min)
 
Each type of Rudder Propeller has a specific allowable design torque, according to incorporating the normal engineering safety factors. Because of our many years experiences, we consider that this design torque cannot be the gist in the selection procedure. Serious consideration has to be given to the service conditions, resulting in a service factor Sf with the nominal design torque has to be corrected . Please select the service factor Sf as follows:
 
The Rudder Propeller service factors do include the regulations of classification societies for normal operation. For ice-class SRP-type service required factors have to be between 0.33 and 0.67. The definite factors for special installation have to be defined by ours
 
 
 
Chongqing Sky Walker Import & Export Trading Co., Ltd. is a stock company which is relatively hold by Chongqing Foreign Trade (Holding) Group Co., Ltd. and been appraised separately by the Customs of Chongqing as well as Chongqing Entry-exit Inspection and Quarantine Bureau (CIQ) as A class enterprise, and titled by Chongqing Foreign Currency Controlled Bureau as an excellent enterprise. 

We are dealing with various kinds of products, including general industrial machinery, marine products, complete set of equipment, starch processing machinery, energy equipment and so on. We are also dealing with hardware, electronic products, steel products and chemical products, sports products and etc. 

The export amount is exceeding USD80, 000,000 per year and our company lies in the top exporting companies in Chongqing city, China. 

Our company persists on People oriented, Scientific and prudential, diligent and hard struggle, courageous and innovative, innovating continuously and pursuing to be outstanding! Chongqing Sky Walker Import & Export Trading Co., Ltd. brims over with energy and opportunity. We sincerely wish to cooperate with buyers and users harmoniously and build a better future commonly!