MODEL: NW-56-S-SF4
ITEM NO: 0702
Drawings : M869 / M2481
Deck model file name and number: NW-05
Drive – hydraulic motors: 4 x Staffa B30PL
Core pull at max pressure : 30.7 ton
(210 bar)
Recommended oil supply

• flow range for motors: 280 – 310 l/min
• flow range for cylinder: 76 – 96 l/min
• pressure motor: 175 bar
  
• pressure cylinder: 170 bar
  
• power requirement - motors: 88 kW
  

Performance at recommended supply:
Speed:
coreØ:

• Slow: 19 – 22 m/min
• Fast: 26 – 29 m/min

midnetØ:

• Slow: 41 – 45 m/min
• Fast: 55 – 61 m/min

Pull:
coreØ:

• Slow: 30.7 ton
• Fast: 23.1 ton

midnetØ:

• Slow: 12.1 ton
• Fast: 9.1 ton

Performance calculations:
flow per sheave rev:

• Slow: 15.3 l/rev
• Fast: 11.5 l/rev

torque per bar:

• Slow: 241.9 Nm/bar
• Fast: 181.4 Nm/bar

Sheave Ø - core / midnet /  Outside Ø: 337 / 711 / 1422 mm
Sheave type: V-block
Hydraulic movements:

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

Weight: 3800 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