Another bespoke project manufactured in house, to meet client specifications and in line with ship systems. This project really was a pleasure to be involved with. The scope involved one 56 Tonne Towing Winch (GM-2000), one 48 Tonne General Hydraulic Winch (CWS-300) and a Dual 75kw Electro Hydraulic Power Unit (EHPU).

 Here are some of the key performance figures for the package:

GM-2000 56Te Tow Winch

High displacement

• 54 tonnes on 1st layer, 870mm mean diameter
• 35 tonnes at 7th layer, 1350mm mean diameter
• 14 metres/min max on 1st layer
• 21.5 metres/min max on 7th layer
• Render mode (cross-line relief) 10-50 tonnes first layer

Low displacement

• 27 tonnes on 1st layer, 870mm mean diameter
• 17.5 tonnes at 7th layer, 1350mm mean diameter
• 28 metres/min max on 1st layer
• 43 metres/min max on 7th layer
   
• Brake rated 56 tonnes static force on 1st layer
• Capacity for 1200 metres of 40mm diameter rope in 7 layers
• Hydraulic requirement 370 litres/min, 280 bar 

CWS-300 Hydraulic Winch

• 48 tonnes on 1st layer, 748mm mean diameter
• 29 tonnes on 10th layer, 1252mm mean diameter
• 16 metres/min max on 1st layer
• 28 metres/min max on 10th layer
• Single speed Hydraulic Motor
• Brake rated 50 tonnes static force on 1st layer
• Capacity for 1200 metres of 28mm diameter rope in 10 layers
• Hydraulic requirement 370 litres/min, 290 bar

EHPU to power CWS-300, GM-2000, A-Frame and Umbilical Winch 

• Fabricated within a ISO 10ft Container with standard lifting points and forklift pockets. End (opposite doors) to be louvred.
• Extractor fan fitted through upper side at door end
• Electrical supply 380V/3ph/50hz or  440V/3ph/60Hz
• Tank assy including:-1600 litre Stainless steel oil reservoir
  Suction filters
  Return filter
  4-off stop taps with closed position switches
  Level switches for low level and stop level
  4-off temperature switches – heater on (5°C), heater off (10°C), high oil temp (50°C), stop temp (60°C)
  Oil heater EC6-001 rated 4 kw
  Suction filters, return diffusers, level gauge, filler/breather cap.

• 2 x Electric motor rated 75kW with IP56 protection. Set supply to 415V/3ph/50hz to run at 1475 RPM
• 2 x axial piston type pump (Kawasaki K3LV-140 ) with load sensing + pressure cut-off + horsepower limiting control, through drive to auxiliary pump, flexibly coupled to the above motor. Set main pumps to 130 cc/rev
• 2 x boost pumps on through drives from main pumps
• Water cooled heat exchanger
• Water supply ball valve
• 2 x charge pressure relief valve
• Winch control valve with 4-off control sections 24Vdc
• Local control box with protection to IP56
• Star-delta type motor starters
• 24V dc stabilised supply to winch control unit
• Winch control unit
• 3 x variable speed forward/reverse control levers to operate main control valve
  Towing winch
  Grapple winch
  Umbilical winch
• 2 x variable speed forward/reverse control levers to operate the A-frame control valves. These are customers existing valves, fitted with Parker D1VW004CNJW91 proportional control valves rated 24V, 1.29A
• Towing winch high/low speed selector buttons with indicator lamps
• Brake pressure indicator
• Automatic brake release synchronised to main directional control