MODEL: NW-68-S-SF4
ITEM NO: 12955
Drawings : M2318 / M2947
Deck model file name and number: NW-06
Drive – hydraulic motors: 4 x Staffa B30PL
Core pull at max pressure : 38.9 ton
(210 bar)
Recommended oil supply

• flow range for motors: 320 – 360 l/min
• flow range for cylinder: 76 – 96 l/min
• pressure motor: 190 bar
  
• pressure cylinder: 180 bar
  
• power requirement - motors: 123 kW
  

Performance at recommended supply:
Speed:
coreØ:

• Slow: 18 – 20 m/min
• Fast: 23 – 26 m/min

midnetØ:

• Slow: 45 – 51 m/min
• Fast: 60 – 67 m/min

Pull:
coreØ:

• Slow: 35.3 ton
• Fast: 26.4 ton

midnetØ:

• Slow: 13.7 ton
• Fast: 10.3 ton

Performance calculations:
flow per sheave rev:

• Slow: 19.3 l/rev
• Fast: 14.5 l/rev

torque per bar:

• Slow: 306.4 Nm/bar
• Fast: 230.0 Nm/bar

Sheave Ø - core / midnet /  Outside Ø: 337 / 864 / 1727 mm
Sheave type: V-block
Hydraulic movements:

• Slew: 125°
  
• Sheave head tilt: 58°

Weight: 3900 kg

Features & options

Stainless Steel net contact area : Standard
Stainless Steel Pins/Bolts : Standard
Cylinder rods – double chrome:  Standard
Split sheaves : Standard

Staffa hydraulic motor : Standard
Sai hydraulic motor : Optional - Pull +2%

Two speeds : Standard
Head options : N/A
Port Fishing :  Optional
Long mast : Optional
Power wheel: Optional