- Model 928A - Hydraulically Driven Saw

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The Log Max 928A features a hydraulically driven saw with pressure controlled sawing force and flow controlled chain speed. The high performance saw hydraulics provide full flow to the bottom saw resulting in fast cutting. This saw unit is able to fell trees up to 420 mm. This compact head weighs in at only 412 kg (908 lbs) in its standard configuration but still generates a powerfull feed force of over 1,4 tons (3,282 lbf). This thanks to the two hydraulically driven rollers which are mounted directly on radial piston motors with 365 cc (24.2 cu in) displacement.

Dimensions & Weight

  • Max width arms open : 1005 mm
  • Min width with arms closed : 818 mm
  • Height to felling link : 1031 mm
  • Standard configuration : 1412 kg

Felling/Cutting - Saw Type
Hydraulically driven chain saw with pressure controlled feed force. Chain oil tank in frame with 4.5 liters capacity.

  • Saw type Saw  : 928A
  • Saw motor : 10 cc
  • Saw chain : 0.404 pitch
  • Bar length, std/opt : 48 cm/42 cm
  • Maximum cut capacity : 42 cm

Optional saw:

  • Saw type : n.a
  • Saw motor : n.a
  • Saw chain : n.a
  • Bar length, std/opt : n.a
  • Maximum cut capacity std/opt : n.a


Feeding
Two hydraulically driven rollers mounted directly on radial piston motors, 365 cc / 22.3 cu.in.

  • Feed roller diameter, V-Steel : 338 mm
  • Feed roller diameter, V-Steel Aggressive : 338 mm
  • Calculated feed force : 1 14,6 kN
  • Calculated feed speed : 23,1 m/sec
  • Maximum roller opening : 330 mm
  • Minimum roller opening : 12 mm
    • 1) calculated at 210 bar pressure
    • 2) calculated at 140 l/min flow

Delimbing
Four movable knives with patented positioning to minimize friction losses, which increases the active pulling force.

  • Max delimbing knife opening : 470 mm
  • Max full coverage delimbimg diameter : 1245 mm
  • Min full coverage delimbing diameter : 20 mm

Hydraulics

  • Maximum pressure : 210 bar
  • Maximum flow : 140 l/min
  • Min. requirements for acceptable performance Flow : 140 l/min

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