Liebherr LTM 1220-5.2 - Manual (Page 15)

LTM 1220-5 .2
15
The slewing gear
• Liebherr planetary gearbox, spring
loaded multi disk brake
• Sensitive motions in closed hydrau-
lic circuit
• Slewing speed from 0 – 1.8 min -1
infinitively variable
The central greasing
• Standard central greasing device for slewing
bearing, boom bearing, luffing cylinder and
winch bearing
• Even supply of grease
• Filling quantity visible at any time in
transparent reservoir
High-power crane drive
With tried-and-tested components
The drive components for crane operation are constructed for high performance
and ensure sensitive and precise load handling. They are specially designed to
suit the crane’s usage and have been subjected to hard endurance tests.
• Crane engine: 4-cylinder Liebherr turbo diesel engine, 180 kW/245 HP, max.
torque 920 Nm, optimized fuel consumption by electronic engine manage-
ment
• Sensitive motions of the hoist gears in closed hydraulic circuits
• Electric/electronic SPS-crane control via the LICCON-computer system
• In-house fabricated Liebherr winches, 105 kN rope pull at the outer layer,
less reeving necessary due to high line pull
LICCON
monitor
Control lever with touch displays
Control
unit
Telescoping
cylinder
Luffing
cylinder
Control block
Hoist gear I
Slewing gear
Liebherr diesel engine
Sensor
Hoist gear II
Control
unit
Control
unit
Control
unit
Engine control