Thruster (Controllable Pitch Propeller)

Features

TCT model is completely newly designed thruster based on our vast experience and achievements.

• Greater Thrust
  As a result of tank tests, and improvements in both design and strength of the blades, we have created a thruster with much greater thrust than convention ones of the past.
• Minimum vibration, Low noise
  Utilizing our unique forward-skew design for the thruster’s blades and the results of many tank tests enabled outstanding progress in low noise and reduction in vibration.
• Easy installation
  Reduction in the thruster length has made it possible for the thruster to be installed to the forward part of the bow section of the ship compared to conventional ones. This gives the ship a great turning moment.
• Easy maintenance and Inspection
  Replacement of propeller blade can be conducted in the duct easily by removing the blade bolts. The thruster body can be dismounted in the duct, shifted outside and inspected on shore. Adoption of the same oil for lubrication and pitch control brings easy maintenance for the thruster.

Scope of supply

• Thruster body
  - Complete set of the propeller hub, Blades, gear housing, Drive shaft, Crown wheel, Propeller shaft, Cross head and duct
• Motor for thruster
• Starter for thruster
• Control system
  - Hydraulic pump unit ;
  Pump, Solenoid valve and relief valve
  - Remote control ;
  Control sub-panel, Portable controller and blade angle feedback transmitter
• Shaft coupling
• Header tank
• Standard spare parts and tools

Option

• The following equipments can be supplied at customer’s option ;
  - Zero pitch system
  - Auto pitch Reduction system
  - ALC (Automatic Load Control)
  - Dual Type Hyd. Pump Unit

Oils

• The oil for the thruster system must be clean enough and approved type, conforming to JIS K2219 / KSM 2129 or equivalent.

Remarks

• Model TC has a slightly different inner structure and hydraulic system from Model TCT.
  Please contact us for the use at 50Hz or DPS

Operation and Control

• The side thruster model TCT consists of the thruster body, hydraulic pump unit for pitch change, remote controller, and prime mover.
  Operating the follow-up dial, incorporated in the wheel house control panel, or the portable-controller dial actuates the solenoid valve inside the hydraulic pump unit.
  This then sends pressure oil from the hydraulic pump to the inside of cylinder (cross head) located in the thruster.
  The oil moves the cross head directly, which in turn gets transmitted to the sliding shoe and crank ring, changing the angle of the propeller accordingly.
  The pitch of the propeller is transmitted from the OT pipe to the follow-up transmitter via a chain, which is then displayed on the control panel indicator.